September 2021

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SEPT 2021




Technical advice, the industry quality stamp and fantastic

profile-raising opportunities—for all roofing disciplines

NFRC sets the highest

standards for work across

all roofing and cladding

disciplines. But we’re much

more than the industry’s quality

assurance stamp. Membership

of the trade association offers

contractors and suppliers a

range of powerful technical

and commercial advantages.

These include a profile on our website

and directory listing, making your

business easier for clients to find. Plus

exclusive access to technical support and

updates, an exclusive health and safety

app, and advice on training provision.

For suppliers, key benefits include

numerous opportunities to engage with

roofing contractors all over the country.

And as the voice of the roofing sector,

NFRC makes our members’ views

heard where it matters most. We work

with government, standards bodies

and training providers to promote the

interests of the industry, and of the

construction market as a whole.

3 | Working Towards Zero Avoidable Waste in the Roofing Sector

NFRC trade

membership benefits

NFRC supplier

membership benefits

Call 020 7638 7663 or visit

nfrc.co.uk/TCbenefits to request our

benefits brochure—and find out more

about what NFRC membership can do

for your business.


Competent Person Scheme:

self-certify roof refurbishment

to Building Regs

Roofing operatives

competency accreditation

UK’s premier event for

the roofing industry

Supporting hardship, training/

upskilling, volunteering

and environment

Contractors with knowledge,

skills and experience of

heritage roofing systems

Editor’s Comment




07963 330774

I was pleased to hear that BMI’s Apprentice of the Year competition

will return in November this year (see page 6).

I’ve been fortunate enough to help judge previous BMI Apprentice of the

Year competitions and have seen first-hand how the two-day event, which

tests the apprentices’ business and people skills, alongside their practical

roofing abilities and knowledge, really helps them grow in confidence and

recognise that a long-term career in roofing is possible. But don’t take my

word for it, in this issue we speak to Tom Knight, who was runner-up in

BMI’s 2017 Pitched Roofing competition, about the event and his

subsequent career in roofing, and he told us: “We all got a lot out of the

competition – it really boosted my confidence, and I learnt a lot from the

knowledge sharing. I’d recommend entering to anyone.” Read our interview

with Tom from page 16.

Cover courtesy of A. Proctor Group. Hear how the

Roofshield membrane was crucial for a recent

church refurbishment project on page 30.




No doubt one area the apprentices will have to brush up on is the latest

update to BS 5250. With the recent changes in mind, Technical Roofing

Consultant John Mercer addresses some of the more frequent

condensation-related issues he sees on projects on page 24, whilst

Marley’s Stuart Nicholson provides his eight steps to help contractors

reduce moisture risk in pitched roofs on page 26.

Elsewhere in this issue, Tanya Cooper discusses developments within the

NFRC Competent Person Scheme (page 22); this month’s QI column focuses

on adhesive bonding of insulation boards (page 67); and Rob Firman outlines

all you need to know about inverted roof correction factors on page 68.

So read on for all this and much more...

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Publishing Director: Andy Dunn

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Registered office: 1 Forstal Road, Aylesford, Kent, ME20 7AU

Commercial Manager: Jake Roxborough

DD: 01892 732 047

Mob: 07956 133314

Email: jakeroxborough@media-now.co.uk

The content of Total Contractor magazine (and website) does not necessarily reflect the views of the editor or publishers and are

the views of its contributors and advertisers. The digital edition may include hyperlinks to third-party content, advertising, or

websites, provided for the sake of convenience and interest. The publishers accept no legal responsibility for loss arising from

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Following the news that BMI’s Apprentice of the

Year competition will return in November, we

caught up with Tom Knight, runner-up in 2017,

to hear how his roofing career has developed


Technical Roofing Consultant John Mercer

discusses some of the more regular

condensation-related issues he comes across

following the latest update to BS 5250


With news of EJOT’s major investment at its UK

HQ, production and logistical facility near

Leeds, Robert Hardstaff outlines the benefits

this will bring to the company and customers




Bradley Hirst of Knauf Insulation provides his top tips for

insulating a timber frame application in our latest column



Marley’s Stuart Nicholson outlines what contractors

should do to minimise moisture risk in pitched roofs


Brian Bell of Marley Alutec addresses the key

considerations to ensure effective flat roof drainage


Schackerley and Keyclad collaborated on the facade

element of a large student accommodation project


Vivalda Group advises contractors to engage experienced

suppliers when working on cladding remediation projects


Peter Dumigan says when it comes to workwear, fabric

performance and sustainability are key considerations




Tanya Cooper, Managing Director of NFRC CPS,

discusses her future plans for the roofing

competent person scheme


John Roche discusses the history of TRUMPF,

the machinery and tools specialist’s progress

in the cladding and facade sector, as well as

challenges and opportunities within the market


The experts at QI address the key points when

adhesive bonding insulation boards


about inverted roof correction factors; Rob

Firman of Polyfoam XPS outlines the key points



BMI has announced the return of its renowned

Apprentice of the Year competition – find out more!


The manufacturer has invested in two new curing

chambers to increase capacity on concrete hand fittings
















Industry News

More news, updates and interviews at www.total-contractor.co.uk



Haulage and distribution are the biggest

concerns referenced in the latest

Construction Availability Statement from

John Newcomb, CEO of the Builders

Merchants Federation and Peter

Caplehorn, CEO of the Construction

Products Association, co-chairs of the

CLC’s Product Availability working group.

Writing on the CLC’s website, they explained:

“Although the overall supply situation has not

changed substantially, there has been a

temporary easing this month, most probably

due to a combination of the holiday period

and some domestic customers delaying or

cancelling projects due to higher costs or

cost uncertainty.

“Timber, cement, roofing products, bricks,

blocks, insulation, steel and cable

management systems remain the products in

shortest supply, while global shortages of

semi-conductors are a cause for concern in

the lighting and appliance sectors. Although

product and material price inflation has

slowed, indications are that it will be 2022

before prices stabilise, with some

manufacturers still to implement double digit

price increases to recover current and future

cost inflation.

“Haulage, however, and the lack of

availability of drivers, are now the major

concerns affecting distribution, with some

suppliers asking builders merchants to

collect their orders as they cannot get

enough drivers to complete deliveries.

Regional distribution is a particular issue,

with some finding challenges arranging

deliveries to Scotland and the South West of


View the full article at



A key highlight in the UK construction calendar

is back with the launch of the BMI Apprentice

of the Year 2021 competition – one of the

leading apprenticeship events in the roofing


BMI says it actively supports colleges throughout

the UK with their work training roofing apprentices

and the contest seeks to find the UK’s most

promising apprentices, and reward them for their

commitment, ability and potential.

The BMI Apprentice of the Year stands out from

other competitions because of its focus on the

business dimensions of a career in roofing – for

example marketing, finance and presentation,

rather than purely tradecraft, although these

vitally important skills are not overlooked during

the two-day event either.

BMI is proud to say that previous winners and

participants have gone on to start their own

businesses, find more senior roles within the

companies that employ them, represent industry

trade bodies and even become tutors themselves.

Matt Ford won the pitched roof category in 2019,

and has highlighted the way elements of the

competition feed into future success: “For

example, one of the biggest lessons I learnt from

the BMI competition was the importance of

networking, making contacts, and having the

confidence to approach people that I didn’t have

before. That goes for everything from using

LinkedIn, to sourcing materials, to handling social

media. Through the competition I learnt that how

you present yourself is very important and how

that leads to winning work.”

This year’s competition opened on September 1st

2021 and welcomes all those recognised as an

apprentice by their employer, or those working

towards qualified status. Each year, the

competition picks a theme and for 2021 it’s

‘influence’. With this in mind, BMI is looking for

contestants who have what it takes to influence

peers and those in the wider roofing community.

Previous participants have spoken highly about how the BMI

event has taught them new skills and given them confidence.

Closing date for entries is October 1st.

Entrants selected for the final, which takes place

on the 17th and 18th November at the BMI

Academy in Gloucestershire, will receive coaching

on a range of topics including presentation skills,

health and safety, estimating and making

technical assessments.

The event is whole-heartedly backed by BMI’s

college partners and their tutors. As Alan Lander

of the South West Roof Training Group – and tutor

to many finalists – explained: “Everything about

the event is first class and we missed it greatly

during the pandemic. The experience and

takeaways the apprentices get from the

competition are outstanding. The only worry ever

is how BMI will manage to match it year-on-year

– and yet they do!”

Mat Woodyatt, BMI Technical Training Manager,

explained: “BMI Apprentice of the Year is our

chance to recognise and applaud apprentice

success stories across the country. Our

commitment to help train apprentices is

unwavering and the competition allows us to

reward those working hard to achieve their goals.

We are really looking forward to welcoming the

finalists to the BMI Academy in November.”

Enter the pitched roofing and flat roofing events at:





Read our interview with Tom Knight, a

runner-up at the 2017 BMI Apprentice of the

Year event on page 16.

















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Industry News

More news, updates and interviews at www.total-contractor.co.uk


Awareness of the importance of addressing

modern slavery is high among construction

SMEs, but there is a need to move beyond policy

to action according to research carried out by

CHAS, in conjunction with the University of

Nottingham Rights Lab.

CHAS and the Rights Lab surveyed a sample of 229

CHAS member companies, the majority of whom

are SMEs within the construction sector. The survey

sought to assess current knowledge and awareness

of modern slavery along with actions taken to

address this problem and identify opportunities for

improving engagement.

Encouragingly, the results showed high awareness

of the need to tackle modern slavery, with 72% of

respondents confirming they have implemented a

modern slavery policy. However, just 39% of those

surveyed said they were conducting due diligence to

address this issue within their businesses and

supply chains and have done so for more than six

months. Meanwhile, almost one fifth (17%) of

businesses said their organisation has no

intention to carry out due diligence in the

foreseeable future, and 50% of respondents

stated that they currently have no intention to

measure KPIs related to modern slavery. When it

comes to drivers of anti-slavery action, several

factors may come into play, including legislative

and regulatory, operational and commercial, and

reputational drivers to encourage business action. It

is possible the vast majority of respondents have a

modern slavery policy because of requirements by

clients or contracts, particularly by large

organisations captured by the modern slavery

legislation. However, two thirds (66%) of

participants said they do not feel pressure from the

government and large businesses to address

modern slavery, while 67% stated they do not feel

pressure from consumers and other civil society

actors to address the issue.

The Modern Slavery Act 2015 only requires

companies with an annual turnover of £36 million

or more to report on steps taken to address the risk.

However, CHAS believes that with over 90% of all

businesses in the construction sector represented

by SMEs, supporting these organisations to manage

modern slavery effectively is vital to improving the

sector's record on this issue.

To support this goal, CHAS is working with the

Rights Lab to establish a range of tools and

resources to help construction SMEs take positive

action to understand, manage, mitigate and

eliminate the risk of modern slavery and labour

exploitation in the construction supply chain.




The start date for the new post-Brexit

certification rules for construction products

has been extended by 12 months.

The UKCA (UK Conformity Assessed) mark came

into effect on 1st January 2021, and was due to

replace the CE mark which had been used to

certify products in Europe, including many

construction products, on 1st January 2022.

This deadline had been seen as unachievable by

many within the sector, especially with regards to

testing capacity and infrastructure, alongside the

time and preparation required by manufacturers

and businesses to prepare to meet the


Following pressure to push back the deadline, and

referencing the “impact of the pandemic on

businesses”, and “extensive and ongoing

engagement with business groups”, the

government has announced it has agreed to

extend the transition period for the UKCA mark

until 1st January 2023.

This move has been welcomed by James Talman,

NFRC Chief Executive, who stated: “At a time

when we are facing some of the worst material

availability and inflation in living memory, this

announcement will come as a welcome relief for

manufacturers and merchants.

“We have been telling the government that the

1st January 2022 deadline was not feasible for

some time, with many products simply unable to

receive certification by the deadline. I am glad

that the message has now got through. This extra

time will provide much-needed breathing space

for suppliers to undertake the necessary tests and

acquire the correct paperwork.

“The government should now work with industry

to ensure the supply chain is fully prepared for

the new 2023 deadline, particularly smaller

firms, so we do not face similar problems in the


The Federation of Master Builders (FMB)

has welcomed the publication of the Bacon


Brian Berry, Chief Executive of the FMB, said:

“I congratulate Richard Bacon on his review

of Custom and Self Build, and urge the

Government to act on his recommendations if

we are to diversify the housing market and

meet our housing targets, we must reverse

the decline in SME house builders, who

deliver great homes, of high quality, in the

places people want to live. 56% of FMB

house builder members build only as

contractors, and the majority build to the

designs and specifications of a consumer.

The biggest constraint they face is access to

viable small sites on which to build. So I

welcome the review’s focus on the supply of

land, and hope the Government will recognise

the support that local authorities need to help

more SMEs to build.”



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Industry News



The Institute of Roofing (IOR)

has appointed Kay Rose

(FIoR) as its new Chief

Executive Officer (CEO).

With more than 20 years’ experience

within the construction industry, Kay has

been an IOR board member for five years

and was Vice Chair from 2018 to 2020.

Speaking about her appointment, and plans

for the IOR, Kay said: “As a former board

member, I have a good understanding of

what the IOR wants to achieve and I am

looking forward to dedicating more of my

time to delivering these aims.

“One of my priorities is to make sure the IOR

is seen as approachable and accessible to

everyone in the roofing industry. I feel there

could still be a perception that only certain

people can join trade bodies and that needs

to change. No matter what role someone

has, I want them to know there is a place for

them at the Institute and members at all

levels are supported to build structured

career paths.

“The merchant sector is a key target in this

respect. IOR membership offers many

benefits to those working in distribution who

are regularly providing roofing advice. I want

to clearly promote that message while

enhancing the training opportunities

available to ensure everyone involved in

roofing can improve their knowledge and

career prospects.

“A continued focus on quality will also be

important to ensure the different levels of

membership are adhered to. At the same, I

will be looking at how we could make the

process clearer and more attainable.”


More news, updates and interviews at www.total-contractor.co.uk


Fixfast has launched ‘My Account’ – a new

self-service online portal which it says allows

customers to make and manage their orders

wherever they are, whenever they want.

The company says the major upgrade to its website

is the latest in a series of investments in its

‘Maximum Reliability, Minimum Fuss’ promise.

“Our 5-star customer service now extends online,”

As well as being able to order from Fixfast’s range of

explained Steve Coppins, Customer Services

more than 5,500 products, logged-in customers

Manager. “We have a ‘Complete Customer Care’

have instant access to all their account information.

philosophy and wanted to build a portal for that

With My Account, Fixfast says customers can:

online – to match the high level of service we’re

• View and track orders, including delivery status already known for by phone and email.

• Create lists of favourite items

“We thought carefully about the most common

requests we get from customers and made sure they

• Download invoices, credit notes and pay online

can access those things easily and intuitively through

• Make quick repeat orders

My Account. By automating many of our processes,

we’re able to give customers the information they

• Access technical information and data sheets

need quickly and at a time that suits them.”

• Set company permissions according to job role. Find out more www.fixfast.com


Solar Energy Scotland has welcomed

Solar Energy Scotland Chair Thomas

the inclusion of solar into the Scottish

McMillan said: “The solar energy

Government’s and Scottish Green

industry in Scotland welcomes the clear

Party’s draft policy programme

recognition in the cooperation agreement

of the important role solar can play in

The document outlines the joint commitment

Scotland’s drive to meet our 2030 climate

from both parties to confront some of the greatest

obligations. As the cheapest, most readily

challenges faced in Scotland to date, responding to

deployable renewable technology, with substantial

the climate emergency, supporting economic

benefits for the economy and helping to tackle fuel

recovery and strengthening a green and fair

poverty, it is time for the sector to be allowed to

recovery from the global pandemic.

grow and flourish. Scotland’s solar opportunities

Solar Energy UK Chief Executive Chris Hewett (pic) could see deployment increase 15-fold by 2030,

said: “Scotland has a more ambitious target on and this would deliver a solar sector in Scotland

net-zero than the rest of the UK, so we are looking proportional to what is being achieved elsewhere in

forward to working closely with the new government the UK.”

to ensure solar energy can play a full part in the

race to cut carbon emissions. The opportunities are Solar Energy Scotland says it is calling on

huge, from a new generation of solar parks, to colocation

with wind farms, large rooftop schemes target of 4GW by 2030, with an ambitious

Government to set a minimum solar deployment

and using onsite solar to decarbonise heat and Government delivering as much as 6GW over the


next decade.


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Industry News



Marley is reminding roofers of the

importance of staying ‘Safe in the Sun’,

whilst supporting the Melanoma Fund.

Daniel Redfern, Marketing Manager at Marley

said: “Contractors working for long periods of

time outdoors, often in direct sunshine and

intense heat, are at risk from sun damage.

So, with our Safe in the Sun campaign, we

aim to provide useful, no-nonsense advice to

make sure all our customers are aware of

the potential risks, and are properly

protected. We encourage roofers to cover up,

use sunscreen and stay hydrated with the

help of our Safe in the Sun kit, featuring a

Marley-branded T shirt, sunscreen and water

bottle – everything you need to stay safe.

What’s more, for every roofer requesting a

Safe in the Sun kit from our website, we will

donate £1 to the Melanoma Fund.”

Michelle Baker, CEO, Melanoma Fund, said:

“Those who work outdoors, such as roofing

contractors, really are on the front line when

it comes to sun damage, including the risk of

melanoma. Many can also underestimate the

importance of sun protection, so we’re

pleased to see Marley taking the issue

seriously, giving advice to the industry to

ensure workers are educated and encouraged

to create better habits. We are very grateful

for its generous support of our work.”

To receive your Safe in the Sun kit and

support the Melanoma Fund, visit the Marley

website www.marley.co.uk/safeinthesun

and register your details – conditions apply.

More news, updates and interviews at www.total-contractor.co.uk


Due to the high demand for concrete roof tiles

as the construction industry rises above pre-

Covid levels, Russell Roof Tiles says it has

seen a huge increase in the requirement for

concrete hand fittings.

To cope with this increase in demand, the roof tile

manufacturer has invested in two new curing

chambers as part of a wider expansion

consumption and reduce wasted heat. This

programme, which the company says enables it to means we can be more efficient with a lower

increase capacity on certain key concrete hand carbon footprint.”

fittings by 50 per cent.

By investing in high tech temperature and

With the key focus on Hip End and Block End humidity monitoring, Russell Roof Tiles says it is

Ridge concrete products – Russell Roof Tiles says able to maintain the stability required to produce

the investment will also allow it to produce more high quality products whilst adding additional

vent tiles and other handmade items.

volume to its existing product range. Dan

continued: “The investment is to address the

The manufacturer worked closely with specialist

growing demand in the current climate and to

curing contractors to design and build the two

provide greater flexibility in production. The main

new chambers which are now fully operational.

purpose of this project is to support Lockerbie to

Dan Hancox, Business Support Manager at produce more fittings but a large portion of these

Russell Roof Tiles explained: “Following our green are sold in the Midlands – so we have moved

agenda, the new curing chambers have been some production to the local area to avoid extra

designed to be fully insulated and temperaturecontrolled

units to ensure optimisation of energy

transportation costs and save on the



Construction firm Beard has responded to the mitigate the risk of projects running late due to

latest Build UK figures which show nearly a supply chain issues, is to ensure prompt payment

third of major contractors are paying within as that will inevitably mean better working

the government target of 30 days.

relationships with those suppliers and

subcontractors. We are all aware that construction

Mark Beard, Chairman at Beard Construction said:

sites generate a significant amount of work for

“It has probably never been more important to

smaller suppliers and subcontractors. So, if we

ensure fair treatment of suppliers and

choose to work with them, we have a responsibility

subcontractors including prompt payment of

to support them through prompt payment of

invoices, as the industry continues to bounce back

invoices. The figures from Build UK show that on

from the economic shock of the pandemic. So, it is

average contractors paid subcontractors within 34

encouraging to see that average payment times

days, which is 11 days quicker than in July 2018

improved over the last six months, even by just one

when they first started collecting data. That is

day, particularly as we are faced with the real

commendable progress but we can and should do

challenge of the materials shortage at the moment.

more to adhere to the principles of the Prompt

“In fact, it seems clear to me that one of the ways to Payment Code.”

















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Industry News


The Institute of Roofing (IOR) has announced

its Associate Course achieved a third-party

accreditation from the Awarding Body of the

Built Environment (ABBE).

The interactive training, which is aimed at anyone

seeking to further their career in roofing, has been

accredited to ABBE Level 3.

First launched in 2015, the Associate Course

enables individuals to broaden their industry

knowledge and gain the skills required to progress

into supervisory and managerial roles.

In recent years, the IOR says the training has

evolved to meet the changing needs of the sector,

and in 2020 the course was updated and moved

to a dedicated online learning platform, enabling

delegates to learn with minimum disruption to

working patterns.

Topics covered include project management, law,

surveying & estimating, tendering & procurement,

roof safety, and sustainability.

Matthew Fry, Chair of the IOR, said: “Achieving an

independent ABBE accreditation is a huge step

forward for the IOR, demonstrating the quality of

the Associate Course and that it meets the

requirements of the sector. Learners that complete

the course can now gain a nationally recognised

ABBE Level 3 award in Roofing Management,

putting them on a more structured career path in


“For the IOR, this achievement also brings us one

step closer to securing chartered status. In line

with this aim, we are continually developing and

enhancing the professional qualifications available

through the Institute. This includes working with

the ABBE to develop a course that would enable

delegates to achieve an accredited Level 5 award.”

The Associate Course includes ten modules with

clearly defined learning objectives, which are

individually assessed as the course progresses.

The IOR says it can be delivered in a classroom or

online over 15 weeks or over a timeframe to suit

delegates’ requirements, and all delegates who

complete the Associate Course receive the grade

of Associate Member of the Institute of Roofing

(AIoR). Members of the IOR at Associate Level or

higher can apply for the Professionally Qualified

Person CSCS Card.




Timber frame is a widely used construction method, so this month Bradley Hirst (pic), Technical

Services Manager at Knauf Insulation, gives his top tips for installing insulation in this application.

1. Performance first:

Timber frame walls generally

provide better levels of thermal

performance than masonry walls

of comparable thickness.

However, their reduced mass means

the insulation you install must reduce

noise as well as meet the thermal requirements

set out in the building regulations.

We recommend Knauf Insulation FrameTherm Roll

or Slab, which not only has the lowest thermal

conductivity of 0.032W/mK of any Glass Mineral

Wool product on the market, but also offers

exceptional acoustic performance. It also has the

added benefit that it is non-combustible, making it

the safest choice because it will not contribute to

the development or spread of fire should it occur.

Always use a product designed for the application.

We are occasionally asked if Loft Roll can be

installed between studs in timber frame

wall applications. The answer is no

because it won’t deliver the required

thermal performance. It is also not

designed for use vertically, so if it is

used in timber frame walls, the

insulation will slump creating gaps.

2. Create a snug fit:

Another factor is buildability. Choose insulation

that is appropriately sized, because this will

ensure a friction-fit between the insulation, studs,

and substrate.

Rigid boards, for example, are hard to install

correctly. They are supplied in large sheets that

must be cut to size on site, but it is very difficult

to match the insulation board to the profile of the

stud. This means there is likely to be gaps that

reduce thermal, fire and acoustic performance.

Even if you do manage to achieve an exact fit


installation, the stud will

bow and shrink, moving away from the insulation

over time, creating more gaps.

By contrast, most Mineral Wool insulation

manufactured for timber framed walls is

appropriately sized to fit 400mm or 600mm stud

centres. Its fibrous nature will create a friction-fit

against the stud and will accommodate the

natural expansion and contraction of the timber,

preventing gaps in the construction over time.

3. Always use a vapour control layer

Installing a Vapour Control Layer (VCL) prevents

the passage of warm, moist air from condensating

on the sheathing board around the stud. If a VCL

is not used, over time the condensation can cause

the timber to rot, damaging the structural integrity

of the building.




A unique opportunity to own a long-established and respected Collyweston slating and

mining company has presented itself, as the owners of Claude N Smith Ltd. are selling up.

Below, Director Nigel Smith tells us about recent investment and the history of the business.

Established in 1965, Claude Smith moved

the business to a 2.5 acre builder’s yard

with a slate mine in Collyweston. In 2010

my father offered the business to me so he could

enjoy retirement, and my wife and I became

Directors of the company, establishing Claude N

Smith as a Limited business in 2011.

With our focus on quality workmanship and

materials, as Collyweston slate had not been mined

for over 50 years, it was frustrating to see the

quality of reclaimed material continually

diminishing, so we took the opportunity to utilise the

unmined Collyweston slate on our site, and gained

permission to mine slate again with the help of a

mining consultant.

As the only producers of newly mined Collyweston

slate, being able to provide new slate to customers

has opened up an unrivalled market giving us the

ability to undertake any size of roof slating.

We now have a purpose-built slate production

building with offices and welfare facilities, employ

15 full time employees alongside myself and my

wife, and we’ve completed a number of prestigious

roofing projects, and regularly won UK Roofing

Awards for our work. The nature of our business is

95% working on listed buildings which always

require a like-for-like refurbishment and the

removal and installation of both new and reclaimed

slate. This also presents many opportunities to price

for not only the main contract, but also associated

works like chimneys, guttering, lead gutters,

leadwork, insulation, timber repairs and stonework.

We are looking to sell 100% shares of Claude N

Smith Ltd. with its exclusive mining rights, staff,

stock, equipment, plant, vehicles and work. The

premises and slate production building will be on

a leasehold basis, price to be negotiated with


The business has great potential to move forward in

many directions, whether it be heritage roofing,

general roofing, Main Contracting, building etc. The

opportunities are there for the business to build and

develop, and most importantly maintain a high

standard of workmanship and keep the art of

Collyweston slating alive for many generations to


Find out more below or at www.claudesmith.co.uk

or email nigel@claude-smith.co.uk


Established 1965 • incorp: STAPLETON & SON




• Long-established, award winning Collyweston slating and mining business.

• Excellent reputation locally and nationally.

• Highly experienced slaters and mining/slate production staff.

• Exclusive mining rights

• Turnover in excess of £1,000,000

• Pre-tax profit 2021 - £222,978

• Business to operate from leasehold premises (lease terms/price to be agreed on sale)

• Offered for sale to facilitate retirement plans.

• Offers invited

Please contact by email in the first instance for further information: nigel@claude-smith.co.uk

www.claudesmith.co.uk • Tel: 01780 444627 • Email: nigel@claude-smith.co.uk


Interview: Tom Knight


Since featuring on our very first front cover, Tom Knight –

Highly Commended in the BMI Apprentice of the Year 2017 –

has continued to have great success in his roofing career.

Total Contractor met up with him on a site near Truro for a chat.

I remember most about the

competition is the Q&A sessions”,


says Tom, recalling his success in

the 2017 Apprentice of the Year. “It was a great

chance to talk to trusted people in roofing – like

Andy King (of A L King Roofing and then President

of the NFRC), Simon Dixon and Gary Walpole

(both also from the NFRC). They have fantastic

experience and expertise to share, which has

really helped guide me in my roofing career.”

It wasn’t the only stand out part of the experience

for Tom. “The section on estimating was brilliant.

It’s been a real help to me when it comes to

quoting. The fault-finding session was also great,

especially when it comes to repair jobs and when

you’re the one that has to identify the issues.”

Prior to entering the roofing industry, Tom was a chef

after leaving college. But the pay and long, antisocial

hours meant it wasn’t for him. Having been

offered a labouring job in roofing, Tom found himself

enjoying the work and with a knack for the trade.

“I’m proud of our

website and promote

our business through

Yell – we get a lot of

work out of it”

Consequently, his employer supported Tom in his

career and provided him with the opportunity for an

apprenticeship and to become a skilled worker. It

was an opportunity he seized with both hands and

– following his training on the job and with Alan

Lander of RoofTrain in Exeter – his talent

blossomed, winning South West SkillBuild as well

as placing highly in the BMI competition.

Having qualified, Tom continued to spend time

honing his skills with his employer and broadening

his roofing experience with his builder uncle. He

then took the opportunity to start his own business,

with a newly financed van and support in the shape

of his father – a very positive time as Tom says he

“We all got a lot out of the

competition – it really boosted my

confidence, and I learnt a lot from

the knowledge sharing. I’d

recommend entering to anyone”

Tom Knight discussing the BMI Apprentice of the

Year competition

Tom Knight was runner-up at the 2017 BMI Apprentice of the Year event and has gone on to enjoy a successful career in roofing.

BMI Apprentice of the Year 2021

This year’s competition – following a break in

2020 owing to Covid – opened for entries on

September 1st 2021 and welcomes all those

recognised as an apprentice by their employer,

or those working towards qualified status.

Closing date for entries is October 1st.

Entrants selected for the final, which takes

place on the 17th and 18th November at the

BMI Academy in Gloucestershire, will receive

coaching on a range of topics including

presentation skills, health and safety,

estimating and making technical

assessments. Find out more on how to

enter: https://redland.co.uk/youngroofers/apprentice-of-the-year-2021




was a “massive help early on”. Following his

father’s final retirement (he’d tried before!), Tom

then teamed up with mate Jack Newton – himself a

national SkillBuild finalist in 2015 – with whom he

works to this day.

Marketing gains

Once again, another key area of focus for

businesses which Tom hadn’t really thought about

prior to the event, came to the fore in the BMI

competition: “I am really conscious of the need for

marketing, and it’s something we work hard at,”

says Tom. “I’m proud of our website and promote

our business through Yell. It’s our main review

platform, and we get a lot of work out of it.”

Tom’s not wrong: his is the most, and best,

reviewed business in his category in the Truro area,

and dozens of former customers aren’t shy in

singing his praises. “It’s also very motivational.

When jobs aren’t going well or there are other

problems, like Covid, it’s a booster to drop onto the

site and read the reviews. We also make sure any

Google reviews feed into it as well, so we’re covered

all ways.”

This superb word-of-mouth and engaged approach

to marketing means that Tom has six months of

work booked ahead of him. Current goals then are

to maintain the business at a consistent level postpandemic

– and get to New Zealand.

Tom was married in 2017, and the big dream was

“I am really conscious

of the need for

marketing, and it’s

something we work

hard at”

to travel to New Zealand in 2020 so his wife Kioni

could meet up with her NZ relatives for the first

time. “We had the tickets and everything – and then

Covid came along. At least we got our money back,

and at least we’ve been able to work outdoors ever

since the lockdowns, which was a result.”

Competition and confidence

In summarising his thoughts about the BMI

Apprentice of the Year competition, Tom says, “We

all got a lot out of the competition, which was more

like a two-day course. It really boosted my

confidence, and I learnt a lot from the knowledge

sharing. I’d recommend entering to anyone.”

Contact BMI UK & Ireland




Industry Focus: CCPI



The CPA says the findings, whilst published “slightly later than planned”,

confirm that the industry welcomes and supports the Code, and considers

it a crucial step in the right direction…

The Construction Products Association (CPA)

has released the results of its industrywide

consultation on the new Code for

Construction Product Information (CCPI). The 65

page report – downloadable at

www.buildingsafely.co.uk – details feedback from

35 trade associations representing the views of

many thousands of member firms across the

supply chain, and 180 individual provider and

user organisations of construction product

information, including most of the largest

companies in the industry.

The new Code was developed to prevent some of

the issues raised in Dame Judith Hackitt’s report

‘Building A Safer Future’, following the Grenfell

Tower fire. The CPA was tasked by Dame Judith

Hackitt and the Government with tackling the

shortcomings identified in Chapter 7 of the report

relating to product information.

The consultation opened on the 1st February 2021

with an official closing date of the 31st March

2021. This was extended to the end of May to urge

everyone who had a view to submit them, and to

encourage the widest representation from across

the industry. The highly-publicised consultation was

undertaken for the CPA by MRA Research. It invited

trade associations, manufacturers, distributors,

specifiers and users of product information to

comment on the proposed new CCPI and its eleven


A key requirement of the consultation was that

respondents read the new Code before completing

their respective questionnaire or providing

feedback. A number of additional and insightful

comments were said to be also submitted by

provider and user organisations alongside their

completed questionnaires. The CPA says the

feedback from the trade associations was detailed,

expert and extensive, providing in-depth comments

and suggestions on behalf of their members.

The findings, the CPA says, confirm that the

industry welcomes and supports the Code, and

considers it a crucial step in the right direction,

whilst comments confirmed that more clarity was

needed in some areas of the Code, particularly

around the training and competence requirements,

and on what exactly was required to comply with

the different Clauses. The MIG is said to have spent

a further two months analysing and working

through the Code so it reflects the massive amount

of expert feedback from the consultation.

Adam Turk, Chair of the CPA’s Marketing Integrity

Group and CEO of Siderise, said: “We are delighted

with the breadth and depth of response received.

The published results are slightly later than planned

but given the importance of the Code, we wanted to

make sure all responses were included in the

analysis. Strenuous efforts were also made in

reaching out to organisations directly to ensure

everyone across the industry had the opportunity to


“The overwhelming support and constructive

feedback has reassured us that the Code is

absolutely the right step forward for the industry,

while also giving us a lot of insightful input to enable

the MIG to review the wording of the Clauses in line

with these detailed responses,” continued Adam.

“Whilst changes have been made around the clarity

and detail within the Code, I can confirm that the

eleven Clauses remain principally close to those

presented in the report.”

Peter Caplehorn, Chief Executive of the CPA, added:

“We are extremely pleased with the progress that

has been made with the CCPI and the enormous

efforts of the MIG in driving it through. I truly believe

the Code will achieve meaningful and permanent

change in our industry, providing users of

construction products with accurate information

they can trust.

“The CPA is incredibly focussed on improving

building safety and driving cultural change in our

industry. We are involved in a wide range of

initiatives to ensure tragedies like Grenfell never

happen again, and the CCPI is just one of those. An

essential counterpart to the Code is the activity of

the Working Group 12 (WG12) – a sub-group of the

IRG’s Competence Steering Group (CSG), led by the

CPA. WG12 focuses specifically on the competency

of those interacting with products and accessing

construction product information. The CSG

recognises that good product information on its own

is not enough; those that use it must be competent

to do so, to understand what they are reading and to

be able to apply the performance information


Find out more:




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NFRC Roofing Focus



By Tanya Cooper, Managing Director of the NFRC CPS.

Itook over as the Managing

Director of NFRC Competent

Person Scheme (NFRC CPS) in

March 2021, having worked

alongside the team during my time

as Chief Operating Officer for NFRC.

Since joining, I have been focused on

guaranteeing the best service to both

contractors and clients.

NFRC CPS – formerly known as Competent

Roofer – was established almost ten years ago in

2012. At the time of writing, we are still the only

active Competent Person Scheme for the roofing

industry in the country.

Guaranteeing workmanship

Competent Person Schemes play an important

role in the repair, maintenance and improvement

sector, allowing contractors to self-certify that

works comply with certain elements of the

building regulations without having to go through

Building Control. They also provide a robust

mechanism for guaranteeing the workmanship of

the registered contractor, providing peace of mind

to clients and stakeholders alike.

For roofing, this means roofers can self-certify

that work meets energy efficiency standards

under Approved Document L1B of the Building

Regulations, where 50 per cent or more of a roof

is being refurbished.

We have hundreds of contractors using our

scheme every week, and over a year we will issue

thousands of Building Regulation Compliance

Certificates (BRCCs), on a wide range of jobs

from domestic, to commercial, to social housing.

However, we believe there are many more roofing

contractors out there who could be benefitting

from the scheme but are missing out. If you think

this may be you, I

would love to

hear from you.

I started with


soon after it

became an

entirely independently run

business. Prior to that, we co-managed it

with a third-party provider. We managed the

technical side of the programme, such as

standards, inspections and reporting to UKAS,

and our partners handled the administration, the

customer relationship management (CRM)

system and the insurance protection part of the

scheme. This relationship worked well, but since

we became fully independent at the end of last

year, we have been able to take the scheme in a

new direction.

Since then, we have designed and created a

brand new bespoke CRM system, introduced a

new interactive Contractor’s Portal to make it

much easier to manage registered works, and

have given contractors a much greater choice

over which insurance provider to choose from. Of

course, as with any new system, there are always

hiccups in the beginning, but since I took over, I

have been laser-focused on driving efficiencies

and making improvements to our customer

service. I hope contractors who use the scheme

have noticed the difference and would welcome

any feedback on how the Contractor’s Portal can

be further developed to suit your needs.

Now our new systems and processes are bedding

in, we are able to start looking to the future. I

hope to grow the scheme, ensuring a wider

number of contractors and clients know about

and can benefit from the scheme. We will be at

Housing 2021 in Manchester in September,

speaking to local authorities,

housing associations, and

developers from across the

country, promoting the scheme,

and educating them on the benefits of

using a NFRC CPS contractor. If you will be

there, come and find us at Stand F45.

Widening the scope of the scheme

We also plan to soon be able to widen the scope

of the scheme to include PAS2030:2019

accreditation. This will be known to many readers

due to the infamous Green Homes Grant Voucher

Scheme. Whilst that particular scheme is now for

the history books, there are still several

government schemes available that require

PAS2030, notably work done through the Energy

Company Obligation (ECO) scheme, Local

Authority Delivery (LAD) scheme, or the Social

Housing Decarbonisation Scheme (SHDS). Further

to this, it is likely that any replacement programme

to the Green Homes Grant will also require this. Our

application is still being processed by UKAS, but if

successful, we hope to be able to certify

contractors to do both flat and pitched roof

insulation to this standard in the very near future.

Over the last few months, I have laid the

foundations for a more improved, robust and

reliable Competent Person Scheme for the roofing

industry and have ambitious plans for the future.

If you operate in the roofing refurbishment market

and are not currently benefitting from the

scheme, you should be asking yourself, why not?

Find out more about NFRC CPS



Left: Tanya Cooper, Managing Director of

NFRC Competent Person Scheme.


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Perfectly Pitched



Following BSI’s recent update to BS 5250, Technical Roofing Consultant

John Mercer addresses some of the more regular condensation-related issues

he comes across on projects…

On July 31st, BSI Standards published a

major revision to BS 5250: Code of

Practice for Management of moisture in

buildings. So, it is an opportune time to discuss

some of the condensation-related issues I come


During my years of carrying out roof surveys and

dealing with roof-related complaints and

enquiries, the issue of condensation control is

certainly one of the most commonly

misunderstood roofing topics I come across. I

have lost count of the number of times I have

dealt with complaints of condensation on

underlay, soaked loft insulation and soiled

ceilings. All too often, the problem is blamed on

the occupants for drying their clothes inside, not

opening windows, or keeping the house too warm;

all may be true, but these reflect actual lifestyles.

Building Regulation C2 requires that the walls,

floors and roof of a building adequately protect

the building and the people who use the building

from harmful effects caused by interstitial and

surface condensation. Interstitial condensation

can cause damage to the structure of a building,

whilst surface condensation can cause moulds to

grow which pose a health hazard to the


Approved Document C states that a roof will meet

the requirement of Building regulation C2 if it is

designed and constructed in accordance with BS

5250. However, it is important to remember that

a British Standard Code of Practice takes the

form of recommendations and guidance, and is

not a firm specification. Alternative solutions can

be used, provided the designer can justify their

use as compliant with the Building


The latest revision

In addition to a general

update to all parts of the

previous version, the latest

revision to BS 5250 contains new

guidance on moisture risks other than

condensation, a whole building approach to

moisture-safe design, building context, the

coherence of design and detailing interactions, as

well as capacity and in-service conditions. It also

covers the management of moisture risks in

buildings undergoing energy saving measures.

The revision acknowledges key changes in

modern building design, such as reduced air

permeability of the building fabric and higher

thermal insulation, both of which have the

potential to increase the risk of condensation. It

also considers changes in lifestyle and the

greater use of moisture-generating appliances

such as showers and internal clothes drying.

Climate change is also predicted to add to the

moisture risk through milder, more humid winters

and more frequent and heavier incidents of

driving rain events.

The differences between ‘as designed’, ‘as built’

and ‘in service’ conditions are now more clearly

understood, as is the way occupants use the

building, which may not always be in the manner

intended, as well as the residual moisture held in

the building fabric from the construction

processes. This all means that the moisture risk

evolves and changes over time and during the

lifetime of the building, and designers are

Left: John Mercer, Technical Roofing


“There must

be a clear

airway from

the eaves


through to the roof


encouraged to allow for the worst-case scenario.

As well as providing guidance developed through

modelling, BS 5250 gives prescriptive guidance

based on the evidence of many years of

successful use. This particularly applies to cold

roof construction, where there is plenty of data

and evidence to provide practical

recommendations for the use of ventilation to

prevent moisture risk.

Common faults

One of the most common faults I come across is

a lack of ventilation provided into the roof space,

usually because there was a misconception that

the use of a permeable underlay means

ventilation is not necessary.

There are different types of permeable underlays,

all with their own methods of installation.

Although there are some air-permeable underlays

which can be used without additional ventilation,

most vapour permeable underlays require a level

of additional ventilation when used in a cold roof

structure, i.e. where the insulation is laid across


a horizontal ceiling.

Another common fault is roof space

ventilation being ineffective due to

the way it is installed or because it

is incompatible with the building

design or with other materials. For

example, there must be a clear

airway from the eaves ventilators

through to the roof space; though all

too often, the ventilation path is

blocked because rafter trays have

been omitted or are ineffectually

installed, causing the insulation to

be laid tight against the underlay.

Ridge ventilation can play an important role in

preventing excess condensation by drawing fresh

air in through the eaves ventilators as air passes

over the ridge. This can be particularly effective if

the residents have partially blocked the cross

flow of air from eaves to eaves by stacking items

in the loft space.

Above: Warm to cold illustration.

Ideally, excessive moisture transfer from the

living areas of a building into the roof voids

should be avoided by sealing gaps at junctions

and around pipe and cable penetrations. This is

particularly important in areas of high humidity

such as kitchens and bathrooms. Less roof space

ventilation may be needed if the building has well

sealed ceilings; BS 9250 gives practical advice

on this. Well-sealed ceilings should be installed in

new buildings but are more unlikely

in a roof refurbishment project. If in

any doubt, assume that the ceilings

are not well sealed and design and

construct the roof accordingly.

The best advice I can give is to

always follow the installation

recommendations given by the

underlay manufacturer and,

importantly, take regard of the

manufacturer’s advice regarding

ceiling types.

View John’s previous columns over at:


Have you got a pitched roofing query or topic you’d like

John to address? Email mattdowns@media-now.co.uk

or contact John on the details below:

Contact John Mercer



For fu

rther inf formation

or a hire quotation call

Email: sales@co






BS 5250 Focus


By Stuart Nicholson, Roof Systems Director at Marley.

The launch of a fully revised British

Standard, BS 5250, has highlighted the

importance of reducing moisture risk and

ensuring correct ventilation levels in pitched

roofs. Previously focussed just on controlling

condensation, the updated Standard now takes a

whole building approach and has been broadened

to include other moisture risks in buildings, such

as rain penetration and roof leaks, humidity and

high levels of ground water. It also recognises

that there are differences between a building

when it is designed and how it performs when it

is built and in-use.

The revised BS 5250:2021 Standard came into

effect on 31st July 2021 and has been re-named

‘Management of Moisture in Buildings – Code of

Practice’. It reflects the growing understanding

about managing moisture and the fact that some

risks are increasing due to climate change and

improved energy efficiency in buildings, with

increased airtightness and insulation.

Excess moisture in a building can cause many

problems, not only to the fabric of the building in

terms of damp and timber decay, but also to the

health of the occupants. In fact, a recent report

commissioned by the Government highlighted the

risk that poor ventilation plays in the spread of

infections, such as Covid-19.

Pitched roofs are at particular risk of excess

moisture because the natural movement of air in

a building means moisture laden air, in the form

of vapour, is likely to ascend to the roof space

(unless steps are taken to make the ceiling, and

any penetrations in it, as sealed and airtight as

possible by following the guidance in BS 9250

‘Code of Practice for design of the airtightness of

ceilings in pitched roofs’). Even then, it is almost

impossible to create a totally air-tight envelope,

so contractors should install ventilation to the

roof void, and the batten space in the case of an

air impermeable roof covering, even if they are

using breathable underlays.

We have been warning about the

risks of interstitial condensation

caused by inadequate roof

ventilation for many years now. It

is one of the main causes of roofing

faults and call-backs for repairs. The

updates to BS 5250 are a reminder of the critical

role that roof ventilation plays as part of a whole

building approach to reducing moisture risk.

Roofing contractors should familiarise themselves

with the new guidance, which doesn’t introduce

any major changes to pitched roofing but does

give more clarity on some key issues. This

includes clarifications about the use of breathable

(LR) and non-breathable (HR) underlays, with

recommendations and figures which illustrate the

different ventilation requirements for specific roof

types and roof coverings (air permeable and air

impermeable). It also gives new guidance on the

calculation methods for assessing moisture risk

in roofs with a table for ‘as designed in-theory’

(ADT) and ’as built in-service’ (ABIS) conditions

for various pitched, flat and composite roof types.

So, what should contractors do to

minimise moisture risk in pitched roofs?

1. Follow the new BS 5250 guidance at whatever

stage you become involved in the roof design and

installation. Liaise with other specification and

construction stakeholders to ensure the roof

design and proposed selection of materials

satisfy current Building Regulations and the

recommendations of BS 5250.

2. Consider the impact of any roofing work on the

rest of the building fabric in terms of moisture

risk assessment, see table 4 in BS 5250:2021.

3. If you are working on a refurbishment project,

check the different requirements – e.g., change of

use of building, structural changes.

Left: Stuart Nicholson, Marley.

4. Also ensure you install the roof

covering and its fittings and

accessories in line with the latest

BS 5534 ‘Slating and tiling for

pitched roofs and vertical cladding-

Code of practice’, and the BS 8612 ‘Dryfixed,

ridge, hip, and verge systems for slating and

tiling – Specification’ Standards, which will ensure

the roof is secure against increasingly volatile

weather and prevent water ingress.

5. As a minimum, get a new fixing specification

for every project and ensure it is followed. Marley

can also provide full roof system and NBS

specification, which will ensure correct ventilation

levels via their approved roof underlays and

ventilation products.

6. Don’t rely on a breathable (LR) underlay as the

sole means of ventilation. BS 5250 continues to

recommend ventilation of the loft space and

sometimes the batten space, and so our

recommendation is that roofs will always require

some form of supplementary low, high or both,

levels of ventilation, regardless of what underlay

is used.

7. Consult the roof covering manufacturer for

their recommended package of materials.

Consider using a full roof system from one

manufacturer to ensure compatibility of roof

components for an efficient, well-ventilated roof.

8. For new and existing buildings, increased loft

insulation can produce a condensation problem.

Take steps to minimise thermal bridging by using

eaves ventilation, a well fitted rafter roll to stop any

insulation blocking the ventilation, and underlay

support trays to maintain clear ventilation routes.

Contact Marley




NFRC Survey



NFRC’s latest State of the UK Roofing Industry survey points to continuing big issues for

the sector, as supply and cost issues dampen increased workloads.

The latest edition of the NFRC/Glenigan State

of the Roofing Industry Survey has shown

that the roofing and cladding industry

continued to be blighted by material and skill

shortages, as well as spiralling cost increases in

the second quarter of the year.

Prices up, availability down

The data shows four out of five (81 per cent)

roofing contractors saw a deterioration in

material availability in the second quarter of the

year, with the most common shortage areas still

being concrete roof tiles, followed by timber

battens, insulation, general timber and clay tiles.

The NFRC says every single respondent to the

survey reported that the price of materials went

up in the previous quarter, with some reporting

price rises as high as 300 per cent on certain


Recruitment difficulties

The survey shows three quarters (76 per cent) of

respondents also reported recruitment difficulties

in the last quarter, up from 44 per cent in the first

three months of the year. Almost half (47 per

cent) of contractors said they struggled to find

roof slaters and tilers, with 27 per cent finding it

hard to even find general labourers. The NFRC

says the shortage of labour is also impacting

wage rates, with 58 per cent of firms reporting

rising labour costs.

The report also found:

• A net balance of 53 per cent of contractors saw

an increase in their workloads against the first


• Scotland saw the strongest rise in workload

after a subdued performance in the first quarter

“Contractors reported

that some products

had seen increases in

the hundreds of per

cent in recent months”

of the year. Firms in Yorkshire and the Humber

saw a drop in workloads after above-average

growth in the previous two quarters;

• Over a third (35 per cent) saw a rise in

enquiries on the previous quarter;

• One in ten contractors (10 per cent) increased

their headcount in the last three months;

• Whilst two thirds (65 per cent) of members had

payment terms of 30 days or less, only 39 per

cent of these were paid within that period.

Supply chain flexibility required

Philip Campbell, NFRC’s Head of Policy,

commented on the survey results: “The second

quarter of this year saw material shortages

intensify further, with roofing contractors now

reporting difficulty obtaining a whole range of

products, not only tiles and timber but on

materials as far-ranging as plastics and steel.

Prices also continue to rise, with 100 per cent of

respondents to this survey telling us their

material prices went up in the last quarter.

Contractors reported that some products had

seen increases in the hundreds of per cent in

recent months. It is critical that clients work with

their supply chain to provide flexibility in

contracts to adjust for these unprecedented


He added: “The availability of labour has also

worsened, with three-quarters of contractors now

experiencing recruitment difficulties. Positive

workloads have meant more firms took on staff

in the last quarter, but there are simply not

enough roofers out there to meet the demand.

Staffing has proved difficult for contractors over

the last quarter as a result of the ‘pingdemic’.

One member has told us he has lost 1,000 days

of productive hours due to staff having to selfisolate.”

He concluded: “Workloads are set to continue to

rise for the next quarter, and indeed the next year,

which is encouraging, but the industry, clients,

and government must all focus on addressing the

ongoing material and skills crisis we are

experiencing. If we don’t start resolving these

issues now, we may see a detrimental impact on

the growth we have seen coming out of the


Potential brakes on the pace of recovery

Commenting on the survey findings, Allan Wilen,

Glenigan’s Economics Director, said:

“Construction continued to recover during the

second quarter, with roofing contractors reporting

a strong rise in workloads. Private housing and

commercial repair, maintenance and

improvement work and new house construction

have been the best performing areas. Roofing

contractors anticipate further, more broadly

based growth over the next 12 months. However,

the availability and cost of skilled labour and

materials will be potential brakes on the pace of

the recovery.”

Contact the NFRC




The choice for decking and paving supports

With the demand for useable rooftop space ever

increasing, Areco is leading the way with its range of

fixed and adjustable supports for paving and decking

applications. We have worked with Hotels, Landscapers,

Roofing Contractors and Builders to provide attractive

and practical solutions.

To complement our range of supports, Areco have

several ranges of Composite and PVCu Decking Systems

available. New ranges of Fireproof Self-Extinguishing

pedestals will soon be available along with Aluminium

Decking Bearers to complete the range.

With a stock of over 20,000 units, we are sure to have

the right support for your project.

Please contact Areco with your enquiry.

• large stock range

• technical knowledge and advice

• nationwide express delivery

• competitive rates

tel: 01922 743553


t: 01922 743553 e: sales@areco.co.uk

ARECO, Unit 2A Coppice Park, Coppice Lane, Aldridge, Walsall, West Midlands WS9 9AA

Cover Story: A. Proctor Group



Total Contractor hears how A. Proctor Group’s Roofshield membrane played a crucial role

in protecting the future of a church in Northern Ireland, and ensuring it continues to play

a key role in the community...

The ‘world-renowned’ Roofshield membrane

from A. Proctor Group is now an integral

part of protecting the heritage of St

Andrew’s Presbyterian Church, Bangor, and

enabling it to continue to serve the local


The current church building

opened in 1957, and as part

of a £10,000 Cornerstone

grant, the

redevelopment works

at St Andrew’s will

include replacement

of the roof, repairs to the heating system, and a

building extension.

Architects Knox and Markwell, specialists in

church design and conservation projects, led the

project design, with specialist roofing contractor

D. Harkin & Co. Roofing carrying out the

roofing works.

D. Harkin chose the

Roofshield roofing

membrane, which has

long been recognised

as one of the highest

“The product’s


performance has

proven itself in the

most demanding

locations around the


performing roofing membrane solutions, providing

a pitched roof underlay which is both air and

vapour permeable.




The balance between energy efficiency, healthy

buildings and the longevity of a building’s life is

crucial from design to construction. If designers

and contractors are to meet this challenge, a new

series of fit for purpose advanced building

materials is required.

Images show Roofshield membrane being installed at St

Andrew’s Presbyterian Church in Northern Ireland.

The product’s exceptional performance has

proven itself in the most demanding locations

around the world. In addition, its characteristics

allow even very complex pitched roofs to breathe

without the need for air gaps or secondary


Incorporating Roofshield into the roofing design

can lead to savings in labour and material costs

due to removing the need for an additional VCL.

The exceptional air permeability performance of

Roofshield means that the roof space will result

in similar air changes to that of a roof using

traditional eaves/ridge ventilation.

A unique performance characteristic of Roofshield

is its patented SMS (Spunbond Meltblown

Spunbond) structure, which allows high levels of

airflow and the transport of moisture vapour,

making the formation of condensation in the roof

space virtually impossible. Numerous vapour

permeable membranes use an airtight vapour

permeable film layer to achieve their

performance. However, the exceptionally high

degree of vapour permeability and air

permeability of Roofshield means that it can

perform in conditions in which airtight

alternatives will not.

Contact A. Proctor Group



Increasingly the focus is on better insulated, more

airtight buildings, but managing ventilation and

moisture is crucial to achieving the all-important

balance. As the industry continues to grow in

understanding the complexities of heat, air and

moisture movement (HAMM) through the building

envelope, innovative new solutions have arrived.

Above: Procheck Adapt from A. Proctor Group.

Procheck Adapt leads the way in advanced

protection for buildings, providing the intelligent solution to vapour control layers.

A. Proctor Group, the advanced building membrane specialist, renowned for its high-performing

Roofshield and Wraptite membranes, developed Procheck Adapt following extensive research and


Procheck Adapt will protect the building fabric from the potential risks of condensation whilst

providing the added benefit of serving as an effective airtight barrier. This variable permeability

intelligent vapour control layer adapts its vapour resistance to suit the environment, becoming

vapour tight in the winter and vapour open in the summer.

So, the membrane adapts to changes in humidity levels and allows the structure to dry out in the

summer and during sunny days in spring and autumn, while protecting it from moisture overload in

the winter and on cold, wet days.

In combination with these new advanced building materials, modelling software like WUFI provides

hygrothermal assessment and better models the condensation risks. WUFI calculations are ‘nonsteady

state’ simulations that constantly plot the movement of heat, air and moisture in a state of

constant change relative to building usage, project aspect, and seasonality.

A. Proctor Group advises its customers to use WUFI software, which is fully compatible with BS EN

15026 and dynamically predicts moisture movement and storage, as well as condensation for each

location. Using WUFI enables architects, designers and developers to identify the likelihood and

risks of condensation, and allows designs to be optimised for the longevity of the building fabric

and the health and wellbeing of the building’s occupants.

Procheck Adapt is a Certified Passive House component, tested by the Passive House Institute and

is a crucial component in protecting buildings from structural damage and achieving energyefficient,

healthy buildings.



Interlocking Concrete Tiles



As the roofing industry continues to experience a significant uplift in workload throughout

both the residential and commercial sectors, Chris Piper, Sales Director for Housing

Developers at Ibstock PLC, which includes the Forticrete brand, discusses why roofing

contractors should choose interlocking concrete tiles to increase on-site efficiencies and

overall build quality.

The release of the NFRC’s first ‘State of the

UK Roofing Industry Q1 2021’ survey, which

interviewed 200 roofing contractors,

identified that the roofing and cladding industry

continued to perform well throughout the first

quarter of 2021. Over half of respondents

reported a rise in workload when compared to the

previous quarter, with all areas of the industry

growing in the first three months of the year.



Gemini Red.

Notably, the domestic repair, maintenance and

improvement sector experienced significant

growth, as homeowners continued to utilise their

disposable income for home improvement

projects throughout the third lockdown.

However, roofing contractors also experienced

labour issues throughout the first quarter of the

year, with over half of those interviewed admitting

they were struggling to find professionals to help fill

the necessary roles required to meet the increase

in demand. Most of these roles were required for

roofing work within the residential market.

As the report concluded roofing contractors

expected the strong workloads experienced

throughout Q1 to continue for the remainder of

2021, and the recent release of the Quarter 2

report has shown these issues have worsened

still, with professionals under pressure to

successfully meet this new level of demand,

without having to significantly bolster their labour.

In order to achieve this, contractors are requiring

innovative roofing solutions that proactively

assist them in achieving a greater rate of

building, without compromising on overall quality,

sustainability or visual appeal.

As a durable and lightweight alternative to natural

clay plain tiles, interlocking concrete roof tiles

provide an effective and affordable option to

support professionals in achieving these aims, as

they significantly increase the overall speed of

installation, without requiring additional labour or


As the tiles are interlocking, only a single lap is

necessary to ensure weathertightness. This

substantially reduces the quantity of tiles

required, whilst also effectively minimising the

number of timber roof battens and roof trusses

that must be fitted. The end result is an

installation that is a third quicker to fit and offers

cost savings of up to a third, when compared to

plain concrete roof tiles. This enables contractors

to complete residential projects at a faster rate,

without compromising the water tightness or

longevity of the roof.

Continued on page 34


Specialist flat roofing and waterproofing components




Non-combustible, aluminium adjustable paving support

• Approved Document B compliant

• No additional plastic or rubber

components required

• 76mm diameter head with 4 paving

spacers; easy installation


• 112mm base with perforations for

water drainage

• Thread with 2 locking allowing fine


• 2 tonne uniformly distributed load

• 3 tonne concentrated load

• All components 100% recyclable.

InStar’s MeT-PeD is a BS13501-1 Class A1 external pedestal solution specifically

designed for use with paving and ceramic surface finishes on external balconies.

Can also be used on roof terraces.

For more details please visit: www.instar-uk.co.uk

or contact T: + 44 (0)1858 456949 E-mail: info@instar-uk.co.uk

Interlocking Concrete Tiles

Continued from page 32

Gemini concrete roof tiles

Equalling the same size as two standard plain

tiles, Forticrete’s Gemini concrete roof tiles are

double cambered to achieve the aesthetic

appearance of a traditional plain tile, with just

16.3 tiles required per square metre, compared to

60 standard plain tiles. As Forticrete’s Gemini

concrete roof tiles are constructed using Lafarge

Cement’s SustainaCem, they also feature

substantially reduced embodied carbon, providing

professionals with a more durable and

environmentally friendly tile that delivers

improved longevity and minimises product waste.

As interlocking concrete tiles can be laid to

pitches as low as 22.5º, whilst standard plain

tiles can only be laid to pitches as low as 35º,

contractors can achieve a faster rate of building

across a diverse range of renovation and

refurbishment projects. Taking this one step

further, additional interlocking concrete roof tiles,

such as Forticrete’s Centurion range, can be laid

on pitches as low as 10º, making it the ideal

material for single storey extensions or the

construction of porches and canopies. As the tiles

are also interlocked, they further increase onsite

efficiencies, even when working to such a low


Above: Gemini Mixed Russet & SL8, Slate Grey. Davidsons Homes, Hilltop View. Below: Gemini Sunrise Blend.

Unified aesthetic

As both types of roof tiles are manufactured using

the same high quality ingredients, a unified

aesthetic can be achieved across the entire roof.

Here roofing contractors can choose from popular

traditional plain tile colours, such as mixed

russet, slate or red, to effectively replicate the

visual appeal of plain tiles, whilst significantly

reducing the number of tiles required. Traditional

sandfaced tiles also feature subtle colour blends

using red or grey palettes to reflect the aesthetic

of older properties, making them the ideal choice

for rural environments.

Roofing contractors should also work with

manufacturers that offer a complete and

complementary range of roof tiles and

accessories, including dry fix fittings and

ventilation systems. This not only effectively

minimises lead times, but also ensures a perfect

fit, as each element has been manufactured to be

directly installed with one another. Because the

materials are supplied by the same manufacturer,

roofing contractors can also be confident the

entire installation is backed by a comprehensive

warranty, to provide both themselves and their

customers with complete peace of mind

As the residential market is expected to remain a

strong growth area for the industry throughout the

remainder of 2021, roofing contractors can take a

proactive approach to meeting these increased

levels of demand, whilst simultaneously

achieving the highest quality installation possible,

by choosing interlocking concrete tiles and

complementary roofing accessories.

Contact Forticrete


01525 244900








mobile: 07593-447 693


STL-10763-20_Roofing Kit_UK_A3_Elevate.indd 1 15.06.21 12:41

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Roof Refurbishment



Allen Coldrake, Director of Technical Services at CCM UK, asks whether we need to look

beyond traditional single technology roofing systems to leverage the benefits of multiple

materials with a hybrid approach...

For many specifiers, the process of selecting

a roofing system for a roof refurbishment is

based on what they have used before, or

the generic system type they are most

comfortable with. Cost and performance are

usually significant factors too, but there are also

wider considerations, which can, in turn,

contribute to a more cost effective and robust


Fundamentally, all roof refurbishment

specification should be about reducing risk, both

during the project and throughout the service life

of the installation. That includes avoiding the risk

of safety issues and disruption, of costly project

overruns and snagging issues, and of

integrity issues or performance

problems. Combining

technologies to leverage the

complementary benefits of

proven materials, as CCM

has with the bitumen/EPDM

hybrid system, Resitrix, can

address a wide range of

specification risk while

providing a simpler

installation with reduced


The issue with hot works

For decades, bitumen systems have

been the go-to durable and cost-effective solution

for flat roofs in the UK, and the latest range of

systems offer advanced bitumen formulations.

But the traditional method for installing a bitumen

system is by using a hot torch to enable the

membrane to adhere to the roof surface, and this

usually involves two layers: an underlay

and a capsheet. Installation teams

are highly skilled and safety

trained, but use of a naked

flame on the roof of an

occupied building – or even

an unoccupied property asset

Allen Coldrake, Director of Technical Services

at CCM UK.

“Use of a

naked flame

on the roof of

an occupied

building – or

even an

unoccupied property

asset – is not just a

risk; it’s an

unnecessary risk”

– particularly in areas of high urban density, is

not just a risk; it’s an unnecessary risk.

Much has been done to mitigate this risk. The

National Federation of Roofing Contractors

(NFRC) has issued Safe2Torch guidance,

indicating the areas of a roof where it is

permissible to use a naked flame and areas

designated a ‘torch-free zone’, where only a selfadhesive

or mechanically fixed membrane should

be used. But does a specification that adheres to

this guidance go far enough to reassure an FM,

building owner or insurance company that any

fire risk has been mitigated sufficiently?

Above: Resitrix refurb project. Top: The Resitrix system from CCM UK.

The alternative is to choose a system that does

not require a naked flame, and there are a variety

of self-adhesive bituminous systems available,

but these are usually used in combination with

torch-on membranes to complete areas of the

roof designated as torch-free zones. Usually selfadhesive

membranes require the use of a hot air

gun to activate the self-adhesive layer, so that


the peel-off film can be released

and the membrane becomes

tacky. However, Resitrix is a

single layer system that is selfadhesive

and only requires hot

air welding for the laps. As a

result, the system is faster and

simpler to install, enabling a

reduced programme, safety risk

and potential for integrity


Better together

Using a bitumen/EPDM system

not only overcomes the need for

any hot works but also avoids

the unpleasant odours associated with some

liquid systems and the plasticisers and halogens

that can leak out of PVC membranes. Combining

these two technologies also leverages the

performance benefits of both bitumen; a hardwearing

and durable material, and EPDM; a

“Resitrix offers



and proven


Combining different roofing

technologies on a single project

is becoming more

commonplace, but bringing

together the advantages of two

proven materials in a single

system is an even more

pioneering approach, enabling

Above: Resitrix can address a wide range of specification risk and provide simpler installation with reduced waste.

FMs to benefit from the

lightweight, robust and naturally elastic material. performance of both bitumen and EPDM with no

Easy to install, including detailing – which can be hot works.

achieved using off-cuts as the system bonds to

itself, Resitrix offers faster installation and proven Contact CCM UK

performance with no hot works and less



vulnerability to installation issues.



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Green Roofs



We take a look at the roofing element of The Liner luxury apartment project, where the

shape and exposed location posed some interesting challenges for Sika’s technical team

and contractor Progressive Systems...

The Liner, a nautical-inspired £35m

residential new-build in Falmouth,

presented a compelling roofing challenge.

Exeter-based roofing contractor, Progressive

Systems, assisted by Sika, took on the task,

installing a roof to withstand the harsh seaside

conditions with an immaculate finish.

Boasting panoramic views of Gyllyngvase Beach,

this latest development by Acorn Blue, consisting

of 52 luxury residential apartments, was designed

by Poynton Bradbury Wynter Cole Architects. Far

from a conventional footprint and façade, the sixstorey

‘V’ shaped building echoes the bow and

upper decks of an ocean liner, with a ‘bridge’

containing penthouses on the top.

The curved roofline is designed to resemble the

ocean waves. A podium component comprising

additional residential apartments, commercial

and retail spaces was also required.

Progressive Systems and Sika were selected for

the job thanks to their outstanding work on The

Dunes in Perranporth, a prior beachfront project

with Acorn Blue. Testament to this, said project

won the Single Ply Roofing category in 2019’s

NFRC UK Roofing Awards.

Range of roofs

The scope of the roofing works included the

penthouse roof and balconies, winged roofs,

garden apartments, roofs for the commercial

units, plant room, paddleboard store and podium

roof, totalling an area of approximately 2,300m2.

As the building would be exposed to the coastal

elements, Acorn Blue was looking for a robust

roofing system that would withstand the Cornish

winters. Sika’s technical experts

helped to create a robust

specification using a range of

durable roofing systems,

guaranteed to stand the test

of time.

This included a fully adhered

single ply membrane Sika Sarnafil

G410 18ELF, Sika Liquid Plastics

Sikalastic 625 for the balconies and

podium, and a Sika Green Roof system, to best

suit the various requirements of each area. Sika

conducted thorough wind uplift calculations to

reassure the architect and client that this type of

system would withstand the high winds.

On top of this, Progressive designed a bespoke

galvanised “c” channel detail to match the

sweeping curvature of the roof design. A timeconsuming

challenge, but one that ensured that

no direct winds would impact on the edges of the

roofing system, giving further peace of mind.

Sika Green Roof was specified for the garden

apartments, commercial units and first floor

podium roof. These roofs are the most bespoke

part of the building because of the curvature and

multiple pitches that were built on each individual

roof (created in structural steel with timber joists

and a multi-cross weaved layered plywood deck).

Due to the exposed coastal environment, specific

coastal plants were chosen to withstand the

conditions, increase biodiversity and give a

stunning visual impact.

Creating the paddleboard shape for the penthouse

roof took time and expertise. Close attention had

Left: The Liner green roof project

presented a number of challenges

for Sika and Progressive


to be paid to ensure

the correct curvature

was being created.

However, despite the

irregular shapes, all roof

junctions and upstand

details were kept as simple as

possible to reduce the potential for any

further issues. Keeping these “typical” details

simple was key to the project running smoothly.

Steve Kerswell, from Progressive Systems, said:

“From inception through to project completion,

Sika was in close contact with us. They were

always happy to discuss and resolve any design

and specification queries. We found the field

technicians’ weekly site visit both useful and

informative for both us and our client, who took

confidence that another set of eyes were checking

the quality of the roofs’ install and detailing.”

Top job

Thanks to the impressive workmanship of

Progressive and the high quality finish of the Sika

roofing systems, the final result is worthy of

topping the very best in contemporary coastal

living. Following the successful completion of The

Liner project, Progressive and Sika have been

invited to tender on further upcoming coastal


Contact Sika








Dakea delivers high-quality affordable roof windows

designed to create beautiful rooms filled with daylight and

fresh air. Our windows are backed by a 20-year guarantee

which always gives our partners peace of mind.



Find out more at


Or give us a call

+44 20 3970 5080







The experts at Brett Martin explain how effective daylighting solutions can deliver resilient

and future-proofed educational spaces that encourage learning, concentration and positive

student behaviour.

Despite the closure of schools and colleges

and the disruption caused by the

pandemic, children spend on average

more than 7,800 hours at school throughout their

education, with a large amount of time in the

classroom. Studies have shown that students felt

at their best under rooflight or natural lighting,

whilst teachers appreciate the good light

transmission, good colour rendition and good

behaviour demonstrated under the conditions

created by rooflights.

According to The Department for Education

Building Design Bulletin 90, ‘The school designer

should assume that daylight will be the prime

means of lighting when it is available’. With

daylight considered a fundamental design

criterion, rooflights can help maximise the

“The school designer

should assume that

daylight will be the

prime means of

lighting when it is

available” The Department for

Education Building Design Bulletin 90

transmission of natural light to the interior of a


Partnering with local authorities, architects and

schools, Brett Martin has a deep understanding

of the specific requirements of the education

sector. Providing expert, impartial technical

advice on rooflight specification, the

manufacturer’s team has access to the widest

choice of rooflight products available, in the full

range of glazing materials. An intuitive and

experienced technical team ensure compliance

with Part L and help to achieve higher BREEAM



In addition to new-build


architects and


refurbishing and

upgrading older

school buildings

can reap the

benefits of

rooflights. Brett

Martin has offered

guidance and advice to

specifiers wanting to transform

courtyards into classrooms, provide

canopies and covered walkways, replace existing

rooflights and develop bespoke daylight solutions

for halls and circulation areas, leisure facilities

and classrooms.

Top class daylight performance

At the Tauheedul Islam Boys High School in

Blackburn, a range of rooflight solutions from

Brett Martin are helping to deliver exceptional

levels of daylight into the school and sports hall,

whilst reducing demand for electric lighting,

lowering CO ² emissions and running costs.

Built by Wates

Construction, the


secondary school

in Blackburn



800 students.

With the school

refectory requiring a

natural light source to

optimise internal

environment conditions, the

Marvault system provided the optimum

combination of light transmission, UV protection

and thermal performance, whilst having a

positive impact on students’ wellbeing. For the

sports hall, a specialist high performance glass

was required which led to the specification of

Glass Link modular rooflights. This flat glass

rooflight system maximises daylight through large

glazed areas and minimal framework, meeting

the requirement for high light transmission and

thermal performance.

Brett Martin not only designs a wide range of

systems to deliver optimum performance,

“Brett Martin has a

deep understanding of

the specific

requirements of the

education sector”

durability, safety and adherence to regulations

and standards – it provides superior technical

support, detailed installation instructions and

maintenance guidelines to ensure systems

perform as promised and work alongside all other

roofing elements.

The specification and installation of the Marvault

and Glass Link rooflights at Tauheedul Islam Boys

High School flood the communal areas and sports

hall with high quality natural daylight, and are

playing a crucial role in both the aesthetic and

thermal performance of the school.

Take a further look at this case study over on


Contact Brett Martin




Roof Access


Tony Stevens, Technical Estimator at Bilco UK, explores the main areas that should be

taken into consideration when deciding on a roof access hatch and accompanying ladder,

to ensure it’s a safe and compliant application for the entire lifecycle of the building.

1Purpose for access Whether for the

education, healthcare, leisure or commercial

sectors, roof access hatches are required to

provide permanent and secure access to the roof

area. In order to make sure you’re choosing the

correct system to meet your project’s unique

requirements, you must first identify the main

reason for requiring access to the roof.

Is it purely for maintenance reasons? Or will a safe

means of access also be required for the regular

installation or removal of equipment from the roof?

Here you should also identify what tools and

equipment will need to be transferred through the

access hatch, or whether it will just be the

individual that is conducting the necessary work.

2Frequency and product specification

Once you have established your reason for

requiring safe access to the roof, you will

then be able to make an informed choice

regarding which roof access hatch and

corresponding ladder system is best suited to

meet the needs of your project.

The first considerations that must be addressed

when specifying a ladder to gain roof access is

where the ladder will be mounted, and the

requirement of any additional safety elements to

ensure the continued safety of the individual

when using the system. If a ladder is to be

mounted externally to gain access to a roof, it

must be fitted with a safety cage and guard rail to

ensure safe and secure access.

For a small roof access hatch, such as the Bilco

E-50TB, which has internal dimensions of 915mm

x 915mm, a fixed vertical ladder should be

chosen. This type of ladder is also the most

suitable option for projects where space is limited.

In this instance, a retractable ladder

would not be recommended, as

the ladder angle would hinder

easy access as an individual

moved closer to the hatch.

However, retractable ladders are

ideal for use in areas including

schools and hospitals where the roof

hatch is larger, at around 1500 mm in size and the

floor area must be kept clear at all times.

To ensure easy and safe access, a minimum head

clearance of 120mm is required, whilst the

maximum single climb should be no more than

three metres, in accordance with BS4211-7.2.

If access to the roof is required on a regular basis

for professionals that will have to transfer tools and

equipment through the hatch, a Fixed Staircase Roof

Access Hatch, also known as a Service Stair Roof

Access Hatch, should be specified with a

Companionway Ladder or a Fixed Staircase. The

companionway ladder is a 75 degree angled, rigid

ladder, which provides permanent access to a roof

hatch of up to 2440mm.

It should here be noted that the roof hatch must be

sufficient to maintain a head clearance of 2000mm,

as detailed in Building Regulations Part K.

When specifying a retractable ladder, it is

essential that you know the height of the space

between the ceiling and the roof, more commonly

known as the roof void. This is to ensure the

ladder box liner will fit inside the space once

retracted. Calculating the height of the floor to the

underside of the roof access hatch should also be

done at the initial stages to ensure the ladder

isn’t too short or long.

Regardless of the size of the roof access hatch,

the system should be operated easily and safely

with one hand, in accordance with

the requirements outlined within

the Manual Handling

Regulations, enabling the

individual to maintain three

points of contact with the fixed


During the installation process, the ladder

must be positioned opposite the hinge to ensure

safe and unobstructed access.

3Bespoke requirements To ensure the

criteria is successfully met, consideration

should be given to the wider options

available for both the roof access hatch and

corresponding ladder.

For example, ladders that are supplied with

relevant fire ratings and available with vertical

backboards that include steps and a handrail for

enhanced safety and security should also be

considered to meet relevant building regulations.

Increased access opening sizes or double leaf

configurations should also be explored where

access is required for larger items of equipment

or tools. Motorised options also allow the

individual to safely maintain contact with the

ladder when entering or exiting the hatch.

Regardless of the project type, all installations

should be subject to individual Risk

Assessments. Comprehensive training should

also be provided for all professionals, supported

by Method Statements regarding safe and correct

use of the access solutions installed.

Contact Bilco UK




All our fixed vertical

ladders are

manufactured in-house

in the UK and conform

to BS EN 131-2,

BS ISO 1412-4

and BS 4211

For industrial fixed, retractable or

companionway ladders we have the answers.

Our range of aluminium or galvanised steel ladders are

manufactured to the highest standards and comply with

Building Regulations for safe access to roof areas.

Detailed information on the key factors to consider when

specifying ladders along with our product selector are all

available on our website.

Given the choice, why would you specify anything less?

NBS Source


www.bilcouk.co.uk 01284 701696 bilcouk@bilco.com

Part of the Access 360 Division of Tyman UK & Ireland

Roof Drainage



Brian Bell, Head of Technical Services at Marley Alutec, looks at the key issues that need

to be considered in order to ensure the correct design of rainwater outlets on a

development, including the relevant standards and how best to approach calculations,

material options, layout and specification, as well as technical support.

Designing effective rainwater management

and drainage is essential to ensure the

longevity of a flat roof system and protect

the building from damage. If water is allowed to

pool on the surface it can place additional

pressure on the flat roof system, causing damage

and leading to water ingress.

Regulations and standards

Guidance and standards for rainwater drainage is

provided in Approved Document H of the Building

Regulations for England and Wales and Building

Standards Part 3 in Scotland – specifically

section H3 of the Building Regulations and Part

3.6 of the Building Standards. Furthermore, the

National House Building Council (NHBC) standard

7.1.5 also provides guidance on the design of

drainage for flat roofs, balconies and terraces. All

of these documents require that flat roof drainage

is designed in accordance with BS EN 12056-3 –

Gravity Drainage Systems Inside Buildings.

Design considerations and calculations

Decisions around the design of the drainage

system should be based on factors such as the

level of expected rainfall, the design of the

building and roof area, and the level of risk from

extreme weather in the area.

Rainfall intensity

The geographical location of the building is the

main determining factor and can be calculated

using data provided in the National Annex for the

UK found in BS EN 12056. The calculation of

rainfall intensity is based on the predicted runoff

from two minutes of a summer

storm event and is measured in

litres per second per square

metre (l/s/m²).

Roof area

The total roof area that needs to

be drained must also be calculated.

For a flat roof this is simply the plan area

of the roof plus that of any roof that

drains onto it. Also, while it is

often not factored into the

calculations, BS EN 12056

requires that 50% of the area

of adjacent vertical surfaces is

also included in run-off

calculations. This is defined as

any wall as well as any roof with a

pitch above 70 degrees.

Building life and design


The drainage strategy is also

influenced by the level of

protection against water

ingress that is required. BS EN

12056-3 provides four design

categories based on the return period of

intense weather events – the likelihood that a

storm of a given intensity will reoccur within a

certain period of time. This is essentially a cost

versus benefit determination based on impact

that rainwater exceeding the capacity of the

drainage would have on the building. To calculate

this correctly the intended design life of the

Top to bottom: Marley Alutec cold roof outlet;

inverted paved terrace roof outlet;

green roof outlet.

building must also be defined.

Under Category 1, roofs are

designed based on a one-year

return period, meaning that the

proposed flow rate of the drainage will

be exceeded on average once a year.

Therefore, it is only suitable where

the flood water can overflow from

the roof and fall clear of the

building. Also, the roof

structure must be capable of

withstanding the additional

temporary loading.

For Category 2, 3 and 4, the roof

drainage is designed to cope with storms

of greater intensity that occur less

frequently with the designed life

of the building as a basis. For

Category 2 the safety factor is

1.5 times the building life. So,

for example, if the building is

expected to have a 60-year

lifespan before major refurbishment,

then the roof should be designed for a

return period of 90 years. In effect there is a

theoretical 1 in 90 chance that within a given

year a weather event will be severe enough to

exceed the drainage capacity. Category 3 offers a

higher level of security and places the safety

factor at 4.5 times the design life. Therefore, with

Continued on page 46



with GRP rooflights from Filon

Safety is at the front and centre of our product policy:

Our technical expertise has contributed directly to UK rooflight non-fragility classification

over decades, with Filon personnel playing key safety roles in influential trade associations

including NARM (National Association of Rooflight Manufacturers) and ACR (Advisory

Committee for Roofsafety).

Our unique, patented Fixsafe system is the only solution that allows profiled rooflights to be

safely installed from within the building envelope, without the need to access fragile roof areas.

We offer a range of fire grades to provide compliance with Building Regulations.

Our Supasafe triple reinforced rooflights provide high impact resistance, spanning and

load-bearing capabilities.

We’re the UK’s longest established manufacturer of profiled rooflights by continuous process,

with a successful track record of excellence in design, product performance and customer

support. As you’d expect, we’re also currently employing Covid-secure working practices

throughout our operations.

Filon: truly a ‘safe pair of hands’ for specifiers.

Telephone 01543 687300 Email: sales@filon.co.uk


Roof Drainage

Continued from page 44

a 50-year life, the return period would be 225 years.

This pic: Marley Alutec’s Elite

range; below: Roof Calculator;

Bottom: Roof outlet illustration.

Category 4 provides the highest level of security

and requires that the drainage is designed based

on the maximum possible rainfall. Therefore, even

the most severe storm event in that geographical

region will not exceed the drainage capacity. In

reality this category is only applied to buildings of

the highest importance where damage to the

building or its contents would be catastrophic.


The total rainfall runoff that must be managed

can then be calculated by multiplying the

effective roof area by the rainfall intensity. This

total can then be divided by the performance of

an outlet to determine how many are required. To

ensure the most efficient removal of rainwater

runoff, roof outlets should be distributed as

evenly as possible across the roof area.

Emergency overflows should be included within

the design of all flat roofs and balconies with

perimeter upstands greater than 50mm. These

provide an indication of a blockage or issue while

also preventing rainwater from spilling into the

building’s fabric and causing damage while the

blockage is cleared.

There are a number of different types of roof

outlet available, so it is important to ensure the

correct one is selected for a project. Among the

first considerations should be the material. Metal

products, especially those manufactured from

marine grade aluminium will offer greater

longevity and durability compared with PVC

products. This is especially important where the

flat roof will be accessed regularly, such as for

maintenance of roof top equipment. Any

deterioration of, or damage to, the outlet will

impact the performance of the rainwater system.

Furthermore, not all outlets will be compatible

with every flat roof system build up or membrane,

and utilising an unsuitable product may mean

that it does not form a watertight seal with the

roof. The simplest approach is to seek outlet

products, such as the Marley Alutec Elite range,

that have been engineered for

universal fitting with all types

of system. It is also essential

to select products that have

been rigorously tested, ideally

with water depths well beyond

the expected real world conditions,

to ensure an effective seal with the roof


The drainage performance of the

outlet is also important as

products with higher flow rates

mean that the total number

can be reduced. This, in turn,

reduces the complexity of the

pipework design as well as the

costs. Accessories such as anti-vortex

grates can help maximise the functional capacity

of the pipe by preventing air being trapped by the

swirling water during peak run-off times.

Technical support

Leading manufacturers can provide technical

guidance on rainwater calculations as well as the

design and specification of drainage for flat roofs.

For example, at Marley Alutec we have created an

online flat roof drainage tool, which can be used

to calculate the number of outlets required based

on location and specification, as well as confirm

product suitability to ensure full compliance with

BS EN12056-3.

Finally, due to the importance

of effective drainage to the

longevity of the building it is

important to ensure the correct

design is maintained throughout

the process, and that accurate

information is available for building owners

and managers to use. Therefore, it is

advisable to select a supplier

that can offer full Building

Information Modelling (BIM)

support for its products.

Ensuring effective and

compliant flat roof drainage is

complex and requires a wide range of

factors to be considered, both in the calculation

of requirements and in product selection. The

correct drainage strategy and choice of high

quality roof outlets can minimise future issues

with the flat roof and protect the building from

water ingress.

To find out more about Marley Alutec’s Elite outlet

range, access online drainage calculators, or to

discuss any requirements, use the details below:

Contact Marley Alutec




Technical support

Roofing experts on-hand to offer help and advice

Assured standards

Meets all British Standards and regulations

High-quality components

Tested for maximum performance, meaning no call backs

Estimates & fixing specs on demand

We’ll help you create them on site and on the go

Comprehensive roof solution

Easy installation with tried and tested compatible components

Need a complete

roof system?

We’ve got you covered.

With all elements brought together from a single

source, you can be confident that everything

will work together perfectly – and that high

performance is all backed up with a 15-year

system guarantee. Find your peace of mind.


Roofing Updates

For further info on all these updates and more, visit www.total-contractor.co.uk


Sika has launched a complete Green Roof The new systems are manufactured in the UK and

package, supplying both the high

are available in three of the most common green

performance roof waterproofing system and roof types – extensive, intensive and biodiverse.

the green roof system, all backed by its

Sika not only supplies all the materials required for

trusted technical and application support.

the whole green roofing project, it also lends its

Specifiers can now go to Sika’s roofing experts for invaluable expertise and support throughout. The

the full spectrum of roofing technologies, from hot Sika Roofing team are on hand to aid with initial

melt structural waterproofing and reinforced design, technical calculations and specification

bituminous membranes, to single ply and coldapplied

liquid membranes, depending on what is sign off.

through to installation, site inspections and final

best for the project in question, all of which can

Sarah Peake, Sika’s Sustainability Manager, said:

now be laid with a Sika Green Roof system on top.

“The construction of new buildings can play a huge

role in contributing to the world’s sustainability

targets and green roofs are part of the solution. The

fact that the green roof market is growing by

approximately 17 per cent per year speaks for

itself. Thanks to its numerous eco-benefits, a Sika

Green Roof can help architects hit sustainable

development targets and achieve an improved

rating from schemes such as BREEAM and WELL,

which are instrumental in helping us build for a

better future.” www.sika.co.uk/roofing


NARM, the National Association of Rooflight Manufacturers, has published an updated version of its Quickguide 08,

entitled ‘Understanding CWCT Classifications of Rooflight Types’.

The CWCT’s (Centre for Window & Cladding Technology) tests for non-fragility comprise soft body and hard body impact

tests, as well as a load retention test. They are intended to identify what glass size and type of rooflight can be deemed

safe for anyone that might be working on or adjacent to the glass from outside, as well as protect anyone that may be

below the glass. There are four classifications assigned by the CWCT standards. These are classes 0, 1, 2 & 3. Simple

descriptions of the classifications and applications relevant to them are provided in the document. Stuart Middle,

NARM’s Technical Committee Chairman, said: “Recent developments in glass rooflight design, including the rise in popularity

of so-called ‘walk-on’ rooflights, have led to a degree of confusion around their specification. This document has been produced to provide a quick

overview to help specifiers avoid potentially dangerous mistakes.”

NARM Quickguide 08 is available from the NARM website, together with a wide range of other technical documents covering different aspects of rooflight

specification. www.narm.org.uk


As part of its ongoing commitment to sustainability, Russell Roof Tiles has recently been awarded Gold status by the

Supply Chain Sustainability School (SCSS).

The pioneering pitched roof tile manufacturer previously held the Silver award and has worked with the organisation since

the early days of its inception. Launched in 2012, the Supply Chain Sustainability School is a multi-award-winning initiative which represents a common

approach to addressing sustainability within supply chains. With over 50,000 users, the school provides free practical learning and support for the UK

built environment, through sustainability training, networking, e-learning modules, tailored assessments, and online resources. The aim of the

organisation is to provide upskilling for those working within, or aspiring to work within, the built environment sector. The school covers all aspects of the

built environment, and focuses on five main topics: sustainability, offsite, BIM, Lean construction and management. Mark Parsons, Technical Director,

explained: “Described by the school as an ‘Outstanding Achievement’, our SCSS Gold Status is the highest level we can achieve and is a key

accreditation, acknowledging our work with major national house builders and construction companies.” The SCSS is part-funded by CITB and other

industry Partners, where resources are shared to inspire the UK built environment to drive positive change. www.russellrooftiles.com


Roofing Updates

For further info on all these updates and more, visit www.total-contractor.co.uk


A comprehensive specifier’s guide to fire

safety standards in flat roofing has been

launched by TN International (TNi).

TNi’s guide looks at the fire safety

responsibilities that key individuals have when a

flat roof system is specified and installed.

It details the background to this important issue

in the industry and explains how to interpret

external fire ratings such as BS476: Part 3:2012

and BS EN 13501-5. It also details the in-depth

process that manufacturers must go through to

achieve a Broof (t4) fire rating and provides

advice on how to interpret these fire test results.

As well as exploring the various considerations

with both warm and inverted roofs, the guide

advises on the fire ratings for terraces and

balconies, the latter requiring construction to BS

8579:2020. It also examines how the latest cap

sheets incorporate innovative graphite technology

which help prevent the spread of flames on a roof.

TNi’s guide concludes by offering five key tips to

specifiers who are assessing the fire credentials

of a particular system, and warns that some

manufacturers only have fire test data showing

one thickness, such as 120mm PIR, which

means the data can be rejected if the insulation

thickness required is different.

A handy selection guide to specifying Broof (t4)

flat roofing systems is then provided to help

simplify the specification process further.

Email info@tnroofingsystems.com for a copy.


Dakea says it is dedicated to giving merchants and installers all the information they need to make their

business a success. With this in mind, the company runs a monthly Trade Matters campaign offering

installers and homebuilders expert advice.

Dakea’s latest Trade Matters downloadable factsheet is a compilation of top tips for professionals from Paul

Edwards, Dakea’s Area Sales Manager. Paul has 25 years’ experience of working in the roof window and skylight

industry and is an expert in providing sales, technical and customer support. Dakea’s free guide aims to give

installers all the information they need to ensure both a smooth installation and a happy client. The areas covered

in this Trade Matters downloadable guide include: A checklist of the tools installers need for a smooth installation;

How to ensure you pick the right roof window for your customer and project; Avoiding condensation, overheating

and leakage on your window; Planning the installation properly; The final checks you should undertake to check

the installation is correct.

Find out more and download your copy of the guide at www.dakea.co.uk


Rainclear Systems has created some great educational resources including illustrated guides and videos to

ensure “there’s really no excuse to say Galvanised Steel is too difficult to install anymore”.

James Wright, Rainclear Systems’ Sales Manager, explained: “It’s so frustrating to hear customers telling you that

their builder has tried to talk them out of using Galvanised Steel guttering and tried to persuade them to allow them to install plastic instead. The G20,

the Government and Greta are encouraging us all to go carbon neutral and to choose sustainable products, to opt for recyclable and ‘cradle to cradle’

options, yet instead of taking a quick look, and learning for themselves just how easy galvanised steel gutters are to install, these builders are pushing

back against the tide of progress and good intentions and – equally as important – their own customers’ wishes. They usually end up grudgingly

admiring the finished job when the customer has stuck to their guns and insisted on steel. So it’s just a crying shame they feel such an unnecessary

lack of confidence in their own abilities. We aim to change that!”

With this in mind, Rainclear has put together a number of guidance resources, including illustrated installation guides and brief ‘How To’ videos, to help

builders gain confidence when pricing up and installing a rainwater system in Galvanised Steel. Find out more: www.rainclear.co.uk







• Will Not Discolour

• Will Not Crack

• Maintenance Free

• 20 Year Guarantee

• Fully Recyclable

Dry Valle alley Trough

Continuous Slate Dry Verge




















BS 8612

BS 5534


Continuous Tile Dry Verge


Roof Tube: Video Content



Roof Tube is the new platform for digital content from the leading players in your sector.

Easily accessible on any device, Roof Tube is packed full and constantly updated with

practical, informative and entertaining video content, including how-to’s; project and

product focuses; installation advice; training and webinars; plus interviews and opinions

from those operating throughout the roofing, cladding and associated sectors.

Take a look at Knauf

Insulation’s new packaging

which makes it easier to

choose, use, transport and

handle its products

Andy Thomas, Regional Director

of Vivalda, explains why

outsourcing cladding fabrication

makes sound business sense












Take a look at what the

TruPunch 3000 from

TRUMPF has to offer!

The experts at

Ibstock Kevington and

Ash & Lacy explain how

to install Mechslip, the

innovative brick slip

cladding system

So head over to www.roof-tube.co.uk to view all these videos and so much more, or

if you’d like to make the most of your digital content, contact Andy or Jake on

01892 732 047 to put your company and products in front of your potential customers!




Facade and Roof Fixings



As EJOT announces it has expanded its UK manufacturing, R&D and technical support

facilities in a multi-million pound programme, Robert Hardstaff, Managing Director at

EJOT UK, tells Total Contractor how this will benefit the construction fastening specialist,

and more importantly its customers...

EJOT has made a significant investment in

its manufacturing capacity and technical

support with a project that has more than

doubled the size of its UK HQ, production and

logistical facility near Leeds.

The construction fastening systems specialist,

which manufactures a wide range of highperforming

fastening solutions for the building

envelope, plus numerous other construction

applications, along with advanced engineering

fasteners used mainly by the automotive industry,

has boosted the size of its Sherburn-in-Elmet site

to create what it describes as a state-of-the-art

facility. This, the company says, has

been designed in a way that

tailors it to the needs of

the UK market, offering

class-leading support

for customer


EJOT says the

expanded facility

will benefit from

extensive additional

manufacturing space and

40% more storage capacity

through an enhanced logistical

control centre. In addition, the company says the

new site will benefit from a state-of-the-art

upgrade to the EJOT Applitec centre which is

already unique in the industry.

EJOT has stated this ‘application technology’

facility will be unlike any testing and R&D facility

available in the UK, being triple the size of the

existing centre,

providing a

resource for


fastener testing

and new product

development in

conjunction with OEMs. The

testing resources will include two new

environmental testing laboratories where the

long-term performance of EJOT products can be

reliably assessed.

“A major step forward”

Robert Hardstaff, Managing Director at EJOT UK,

said: “This investment in our UK site represents a

Above: The building extension has more than doubled the size of the existing UK centre.

Left: Warehouse and storage is now three times larger by height.

major step forward for EJOT, giving us a unique

position in the market in respect of the levels of

technical, logistical and sales support we can

offer, with a strengthening of our manufacturing


“Our ethos of ‘converting customer problems into

product solutions’, both reactively and often

proactively to prevent problems evolving in the

first place, requires us to have the right technical

resources and quality procedures in place to meet

whatever challenges our customers face. Our new

facilities will enable us to do this in a way that

not only continues this level of support, but also

reaffirms our unique positioning to the industries

we now serve.”


Valued in excess of £6m in 2016, EJOT UK says

the investment programme was proposed and

agreed well ahead of the implementation of a

post-Brexit agreement, supporting its long-term

vision to provide market-leading support to UK

customers, whilst creating an EJOT Group

manufacturing centre of excellence for many of

its key products in Yorkshire. The deal was

rubber-stamped by the German-owned EJOT

Group after the Brexit deal was reached, and

progress on site continued apace despite the

impacts of the pandemic for an on-time


In addition to immediately providing an extra

4,500 sq. m of operational space, EJOT says the

extended facility will create an ideal platform to

develop EJOT UK’s future workforce. It will expand

production of EJOT’s core range of fasteners,

used in both the construction and engineering

sectors, and include a new facility for

manufacturing the LIEBIG range of heavy duty

anchors. This brand was acquired in 2017 by the

EJOT Group from Finnish company Sormat.

Long-term vision

Robert continued: “The same quality

management systems that we adopt across all

EJOT production facilities globally will apply

throughout our extended factory here, which is

one of the reasons the EJOT brand maintains its

position at the forefront of its markets.

“When the Group purchased our Sherburn-in-

Elmet site back in 2003, it was done so with a

long-term UK vision in mind, which is why a large

site was chosen with room to grow. It is

tremendous to see this vision fulfilled, boosting

what many of our customers, OEM partners and

professional associations already regard as a goto

resource for industry-wide training and


“The investment programme, however,

represents so much more than just a building

extension. It supports EJOT’s family business

approach that drives our global strategy to

continuously re-invest profits into the business

More than 15% of EJOT UK's head office staff are part of

Apprenticeship or higher career education schemes.

and futureproof our employment needs by

providing youth career opportunities in highly

skilled and technical roles.”

EJOT UK says it is dedicated to investing in youth,

with 15% of its current UK HQ workforce

benefitting from an apprenticeship programme in

various formats. These apprentices work across

different areas of the business from technical

services and quality management, through to

engineering and manufacturing. They are working

towards qualifications that are both vocational

and degree level with participants attending

college or university on a day release basis.

EJOT UK also says it ensures that everyone in the

team benefits from mentoring – one of the

cornerstones of the company’s success globally.

This facilitates the sharing of knowledge, advice

and guidance by a combination of tutors, senior

management and often employees that have

already graduated through the system to

continuously improve skills and build on best


EJOT points out its holistic thinking also applies to

the design of the building extension, as the

specification achieves a high degree of

sustainability, including a centralised heating and

cooling system and smart lighting throughout to

optimise energy use. The company says the roof

has also been equipped for the installation of

Exterior design is consistent with the EJOT brand and Group

buildings around the world, utilising the horizontal structure

façade from DOMICO in EJOT’s corporate colours.

“It is tremendous to see this vision fulfilled,

boosting what many of our customers, OEM

partners and professional associations already

regard as a go-to resource”

photovoltaic panels as a futureproofing step to

support the move to ‘green’ electricity, whilst the

final stage of the project will see an upgrading to

the original building which will include recladding

to match the new extension and be

consistent with the global EJOT brand.

With headquarters in Germany, EJOT GmbH is still

a privately owned German family business and

established its UK operations in Leeds in 1985,

but the company points out it has a much longer

heritage extending back to 1922. As the EJOT

Group approaches its 100th anniversary, it says

recent investments in its plants in Poland, India,

the USA, Turkey, Brazil, Mexico and China, as well

as the UK, ensure the business is in excellent

shape for its next era.

In addition to the construction market, EJOT

provides fastening systems for applications

across manufacturing and engineering, including

the automotive, white goods and electrical

industries. Many of the world’s leading car

brands depend on EJOT fastening systems

throughout their manufacture as they meet the

global challenges to build stronger and build


Contact EJOT UK




Project Focus



Total Contractor takes a look at the cladding project for the Vita Student accommodation

in the heart of Leeds’ Civic Quarter, which saw Shackerley and Keyclad Limited work

together to install 3924m² of SureClad honed natural stone limestone, and 125m² of

honed natural black granite panels.

With two prestigious universities, Leeds

has a student population of around

38,000. A new development from Vita

Student provides student accommodation in the

heart of the city while complementing the

heritage of the surrounding built environment,

thanks to an A1-rated non-combustible SureClad

Natural Stone façade from Shackerley.

Local heritage

The development is located in the heart of Leeds’

Civic Quarter. Originally designed and partially

constructed as a hotel, the project was

acquired by the developer when

the concrete frame was in

progress. Architectural

and Interior Design

practice Fuse

Studios, was tasked

with revising the

scheme to create

312 studio

apartments within a

16-storey building, with

amenity and retail

accommodation on the lower floors.

Simon Clarke, Director of Fuse Studios, explained:

“The use of natural stone as the main façade

material had always been a local planning

aspiration because of the location of the building

and its proximity to heritage landmarks. The

planners were very clear that the façade had to

be genuine stone with natural colour and tonal

variation, rather than a veneer or engineered

stone substitute.

As the original

design has been

converted from a

hotel to provide


accommodation more than

18m tall, fire safety was also

an important consideration of the

specification. Shackerley’s SureClad Natural

Stone is classified as A1 non-combustible to BS

EN 13501-1.

A sample to confirm the spec

The Shackerley team was able to propose a

SureClad natural limestone that complements the

colour, tone and texture of nearby buildings. The

façade had to be genuine stone with natural

colour and tonal variation, rather than a veneer or

Shackerley’s SureClad Natural Stone is classified as A1 non-combustible to BS EN 13501-1.

engineered stone substitute, providing the

appearance, texture and quality of Portland Stone,

while considering the buildability, structural

loading and cost implications of the façade.

To help gain approval from the developer and the

local planning office, Shackerley produced sample

panels at one of the company’s ISO 9001

accredited factories in Lancashire and Façade

installation specialist, Keyclad Limited,

constructed a 3m x 4.5m section of wall on site in

Leeds. This demonstrated what the limestone

material would look like in situ and how the four

standard panel sizes would be used to create


Simon Clarke continued: “Constructing such a

large area of façade on site enabled everyone to

Continued on page 58














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Project Focus

Continued from page 56

see how the SureClad façade panels would look

on the finished building.

“The sample wall area also demonstrated that,

although the panels are slim and lightweight, they

are high quality and robust, offering a long-lasting

solution with an enduring natural stone


Creating contrast

To contrast with the light beige colour of the

main limestone façade panels, Fuse Studios

also selected a black natural granite façade

material for the lower floors, in the same

‘honed’ finish.

Simon Clarke continued: “The use of the

dark SureClad granite system,

along with extensive glazing

at the lower levels,

establishes a visual

separation between the

student amenity space and the residential

accommodation above.”

Non-sequential installation

The SureClad cladding panels for both the

limestone and granite sections of the façade were

manufactured to order by Shackerley.

Peter O’Brien, Contracts Manager at Keyclad

Limited commented: “In such a busy city centre

location, site storage and deliveries were limited

so it was essential that we had the right panels

each week to keep the programme on track.

“Shackerley manufactured the panels and stored

them for us, so we were able to call off the

consignments we needed a week ahead of time

and have them delivered to site on a

just-in-time basis.”

Keyclad Limited used

Shackerley’s Queens

Award winning

SureClad Access

installation system for the project, which helped

the team to manage the programme with nonsequential


Peter concluded: “We used mast climbers to carry

out the installation and were able to work around

them, returning to the mast climber positions to

complete the façade in these areas once they had

been removed.”

A new landmark

A total of 3924m² of SureClad honed natural

stone limestone was used to create the façade,

along with 125m² of honed natural black granite

panels. The project builds on Shackerley’s wide

ranging portfolio in the student accommodation

sector, which includes a previous Vita Student

project in Edinburgh.

Contact Shackerley

01257 273 114


“Site storage and deliveries

were limited so it was

essential that we had the

right panels each week to

keep the programme on


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Total Talk: TRUMPF Ltd.



We put the questions to John Roche, National Sales Manager at TRUMPF Ltd.,

discussing the company’s history, new innovations and how machinery and software is

helping Architects and Designers achieve more complicated and interesting cladding and

facade projects...

Tell us a bit about TRUMPF Ltd. and what

you do as a company...

TRUMPF Ltd. is the UK subsidiary of TRUMPF

GmbH + Co. KG, a world leader in sheet metal

fabrication machinery and industrial lasers.

TRUMPF was founded in 1974 and celebrated its

40-year UK business anniversary in 2014,

serving the UK market for machine tools, laser

technology, 3D printing systems and power tools.

Equipped with a fully operational showroom and

spacious training facilities, the company can

provide pre-sale demonstrations and

comprehensive user training. TRUMPF also

provides its own technical service as well as

tooling and spare part management to support

customers throughout the UK as promptly as


What sort of projects do your customers

get involved with?

Above: images taken from the TRUMPF Open House event which showcased the company’s innovative offering.

Anything that requires sheet metal to be turned

into a customer’s product, using our range of

specialist Punch, Bend, Laser & Welding

equipment. This is especially relevant to the

cladding and façade market which were

traditionally guillotine, corner notch then bend,

but this sector has heavily invested in the latest

technology available from TRUMPF.

Can you tell us about some of the

milestones in the company’s history...

For nearly 100 years it has been our mission to

develop technology for production further, with a

strong focus on doing this economically, precisely,

and sustainably. TRUMPF is a family-owned

company and its customers are getting everything

from a single source: machine, laser, automation,

software, and the security.

Some key dates in the company’s long history


• Christian Trumpf acquired the mechanical

workshops of Julius Geiger GmbH in Stuttgart in

1923. Here he produced flexible shafts for

attachable tools, mostly for the dental market.

• 1934 to 1949 – The first motor-driven hand

shears and hand-guided machines for simple

sheet metal processing were produced.

• 1957 – TRUMPF patented the coordinate guide

for sheets. This is the starting point for the NC

control of modern sheet metal machinery and the

first punching machines.

• 1974: TRUMPF UK was founded.

• 1974 to present – TRUMPF has established

itself as the leading supplier and innovator of

CNC controlled Punching and Bending Machinery

to the UK cladding and façade manufacturing

market, with its customer base increasing yearon-year.

Can you tell us about some recent

TRUMPF launches and initiatives…

With the change in mindset of the cladding and


façade market and the move to 3D models,

TRUMPF has invested heavily in its latest Boost,

CAD/CAM Software, allowing full assembly

models to be dissolved into individual 2D parts

automatically for manufacture. Boost then takes

this process a stage further by again

automatically creating 3D Bending Programs for

the TruBend range of machinery. Add this to the

latest range of entry level Punch & Punch / Laser

Combination machinery, Architects and

Designers’ concepts can be easily realised in

sheet metal with a few clicks of the mouse.

With regards to R&D, do you consult with

companies to find out how you can

develop solutions so they can meet their

customers’ demands and help them

overcome challenges?

Annually, TRUMPF spends nearly €400 million

on its own R&D department irrespective of profit,

and it is this thinking that sets TRUMPF apart.

The direction of R&D is heavily influenced by the

emerging markets as well as the existing

customer base, working closely together with test

customers to get feedback from real working


How have your customers’ expectations

changed in terms of tooling and

machinery in recent years?

As mentioned previously, the cladding and façade

market were traditional in the approach to

manufacture, relying heavily on a very skilled and

manual manufacturing knowledge held on the

shopfloor. TRUMPF machinery has allowed those

skills to be transferred into the office

environment, by programming the machinery offline,

minimising the avoidable errors and

maximising production with the available range of


When investing in machinery and tools,

how important is it that purchases can

meet the demands of five years down the

line? – should what companies purchase

now shape the future path of their


Definitely! The customer success is also our

success and we want our customers to be

capable of meeting their current needs but also to

be ready to address the challenges not yet

visible. Some of our customers are still very

happy with the machines they bought 10-15

years ago which are capable of meeting current


How important is maintenance of

machines and tools to ensure they work

at maximum capacity? Is this something

you advise customers on?

It’s very important to keep your machine

maintained and know how to work with it – after

all, the equipment is purchased to be profitable.

We offer our customers different maintenance

plans which suit every machine and their needs,

all supported by our team of UK-based engineers,

co-ordinated from our base in Luton, Beds.

There’s a big challenge around skills for

those working on the tools and on

projects. Are you experiencing this within

the manufacturing side also?

Yes, without a doubt, and as the industry loses its

traditional skillset, it is essential our customers’

training requirements in modern methods of

manufacture are met. The machine tool industry

is becoming more and more software and app

driven, so it is important for us to develop first

class reliable software systems like our Boost

software (mentioned previously) but also to make

our machines easy to use for everyone. To

complement our range of machinery, we offer

software and machine training courses directly

from our showroom in Luton or alternatively,

customers can carry out training via E-Learning.

There are big challenges within the

supply chain with regards to materials in

construction, is this something you are

seeing and experiencing?

Most definitely and TRUMPF have not been

immune to the current climate as our machinery

is constructed from parts not only from the steel

sector, but also from the electronics sector. We

rely heavily on the global supply chain throughout

our manufacturing process and in some cases,

TRUMPF has intervened to assist in the

challenges felt by our suppliers.

What’s the biggest issue affecting your


Steel prices are currently the hot topic with the

price and availability of steel posing huge

challenges across the sector. Labour – and not just

skilled labour – has always been a big concern, as

who wants to stand at a punching or bending

machine and serve an apprenticeship when with a

click of a mouse, you can be a global “You Tuber”?

It’s been a busy time for TRUMPF with the

new launch, what’s next for the company?

Currently, we are launching our new TruPunch

3000 range of machinery which can also be

purchased as a Punch/Laser Combination. Add

this to the latest in entry level Tube Laser 3000

machinery and 3D Programming Tube, we have

exciting times ahead for the next fiscal year. Also,

we are delighted to say that this year’s BlechExpo

Exhibition in Stuttgart currently goes ahead,

where the full range of cutting and bending edge

technology will be on show, so feel free to drop by

the booth and discuss your requirements with us!

It’s been a difficult year and a half or so

for construction, are there reasons to be

positive looking forward?

Yes, definitely; with the economy being given the

injection by way of the Tax Superdeduction, there

has never been a better time to invest in new

equipment. Also, on the topic of BREXIT, we see a

bigger drive in manufacturing to back the “Made

In Britain” campaign which can only help us

rebuild a strong economy. TRUMPF is perfectly

positioned here in the UK to help its customers

grow, by improving their manufacturing processes

by way of investment and support them on their

journey towards success.

Contact TRUMPF Ltd.




Recladding Projects



Vivalda Group says it has seen an uplift in recladding projects and expects to see further

growth in the next year, but the supplier says it’s important for contractors to partner with

companies who have “the expertise and knowledge to fulfil often complex remediation


Vivalda Group, a leading supplier of noncombustible

rainscreen cladding systems,

says it has been instrumental in several

major remediation projects, replacing unsafe

material with A-rated compliant facades.

Having already completed a dozen recladding

projects involving high rise residential towers,

Vivalda Group says it is well placed to provide the

best solution for any remediation project. Thanks

to its divisional structure, Vivalda Group can

provide a wide range of fully tested, noncombustible

branded cladding.

Alternatively, the company points out it can

manufacture A-rated bespoke cladding via its

wholly owned facility MSP Facades. Even better,

its sister company Prism Powder Coating can

provide a fully Qualicoat-approved powder

coating solution. With both businesses based

near Glasgow, Vivalda Group says this ensures

consistent quality and reliable supply.

In the case of London-based Denning Point,

Vivalda Group’s Glasgow-based façade specialist

MSP was tasked with the fabrication of precoated

solid aluminium boards. Vivalda Group

says while the UK’s Housing Ministry (MHCLG)

has been criticised for the slow progress of repair

work on high rise buildings, MSP Facades is

predicting a lot more of this type of project in the

next year.

Denning Point is a classic 1960s residential tower

in Tower Hamlets, London. Comprising 23 stories,

the building was re-clad in 2014. However,

following the Grenfell Tower fire and a subsequent

change in safety regulations, the owners –

Eastend Homes – commenced

the process of removing nonconforming

cladding material.

Recladding specialist D+B

Facades commenced remediation

work in early 2020, using A1-rated

solid aluminium panels in three custom colours to

replace the existing, non-conforming cladding.

Fabrication of the new non-combustible panels

was undertaken by MSP, who can provide either

an off-site fabrication or full manufacture and

powder coat solution.

To minimize project timescales, noise and

disruption to residents, D+B Facades was able

to utilize the existing cladding framework,

installing new mineral wool insulation and cavity

barriers before the 3mm thick solid, pre-painted

aluminium panels were fixed in place.

Gillian Thomson, Branch Manager at MSP

Facades, commented: “While the technical

demands of this project were reasonably

straightforward, the sheer volume and variety of

panels is unusual.

“During the six-month build process, we

Left: Gillian Thomson, MSP Facades.

Above: Denning Point, London project.

fabricated more than 2,100

panels equating to

approximately 2,500m². We also

cut to size and punched around 360

smaller, perforated panels, covering

220m². Throughout the whole process, we were

very mindful of reducing waste and optimizing

every aluminium panel. Utilising our optimization

software, we were able to achieve maximum yield

from every sheet of metal.

“Looking ahead, it’s important for contractors to

engage experienced cladding suppliers with the

expertise and knowledge to fulfil often complex

remediation projects. We’re aware that the

predicted demands on the industry may soon

outstrip the supply of skilled people – so our

highly trained workforce is likely to be extremely

busy for the rest of 2021 and well into 2022.”

Contact Vivalda Group

0121 328 9381
















Cladding & Sheeting Updates


SFS says it has launched a quick, simple, and requirements.

secure cavity fire barrier called NVELOPE NV

David Fraser, Business Unit Manager at SFS,


said: “As one of the market leaders in subframes

Designed to protect cavity walls against the and fixings, SFS now offer an additional range to

spread of fire, SFS’ new range offers three levels support the design and installation of bespoke

of high-performance protection for horizontal rainscreen solutions. The launch of SFS’ new fire

applications, and an added option for nonventilated

vertical applications.

the system easier with our expert advice on-

cavity barrier range will not only make designing

hand, but will also ensure fire safety is integrated

Created with specialist cladding contractors and

into the SFS solution.”

designers in mind, SFS’ NVELOPE NV CFB fire

safety solution provides an appropriate barrier to Building cavities offer a ready route for the spread

meet most subframe projects’ specific fire safety of fire and smoke at any given point. SFS says its

NVELOPE NV CFB solutions prevent this by creating

an intumescent seal in a fire situation, as the

active ingredients in the barrier react quickly in fire

emergencies and provide fire protection ranging

from up to 60 minutes to up to 120 minutes. As a

result, SFS says this mitigates the issue with

alternative rubber-based fire barriers which can

give off smoke and fumes in application.



AJW Distribution has announced the launch of its first eCommerce site, ‘AJW Cladding Supplies’, selling all things

Cedral for residential projects.

The purpose of the site is to promote this amazing product to the end user throughout East Anglia and Essex. The

company says the aim is to provide a site to showcase the large range of Cedral products available to the customer,

providing them with the great service which AJW Distribution prides itself on. The company has developed dedicated areas on the site to provide

customers with all the information they need to make their Cedral project a success. This includes a blog area which showcases a number of posts

including how to install Cedral, how to store and handle Cedral, and a Case Study area which will inspire those looking to use Cedral on their project.

AJW Distribution has stocked and sold Cedral for a number of years now and work alongside their team to ensure customers receive the best possible

service. Marketing Director, Charlotte Woods commented: “Come and find us on Instagram, Facebook or Pinterest to find out how AJW Cladding

Supplies can help you with your project questions. We don’t just see you as a customer, we want to help you with your Cedral project. We will always

ensure we are transparent with delivery times and will always aim to include relevant information on the site to help you fit your Cedral correctly and to

ensure you choose the right products and colour for your project.” www.ajwcladdingsupplies.com


CA Group invested in an EHT VarioPress bending machine from TRUMPF back in 2018, and such was

the success, it has now purchased the latest TruBend 3000 Series Bending Machines from TRUMPF.

Stating at the time of purchase that “service reliability and effectiveness is a key factor”, CA Group says the CA Group has invested in TRUMPF machinery.

VarioPress has not only met its expectations, but exceeded them in providing additional capacity and flexibility with no compromise in reliability. The purchase

of the next pressbrake was targeted at a machine with a specific product group in mind and a budget to be met. TRUMPF offered another customised variant

from its extensive product range and CA Group opted to purchase a TruBend 3170 with customised back gauge solution and user specific software on the

control. It was important to CA Group that the chosen supplier could accommodate specific requirements with the machine, and TRUMPF again provided the

solution to meet the needs of CA Group. Since the installation of the VarioPress, and as the control software is almost identical to that of the TruBend 3000

Series, the integration of another TRUMPF bending machine was even easier this time around, and it gives CA Group more flexibility with its scope of

production as operators can be moved across the fleet of bending machines more freely. Among the favoured features of the 3000 Series Machine was the

extended back gauge configuration across four finger stops in conjunction with a specific “Programming Bending Wizard” to match that of the VarioPress. Add

this to the fact the 3000 Series has no C-Frame, and this allows full 960mm deep bending to be done along the full 4 metre bed length. www.trumpf.com






For a fully integrated supply chain

using metal-based products.


• Systems manufacturers

• Component manufacturers

• Systems installers

• Independent roofing and

cladding inspectors

• Industry support services providers

Visit www.mcrma.co.uk

to find out more about the MCRMA and its members.

The ‘MCRMA The Building Envelope Authority’ is a registered Collective Trademark of the Metal Cladding and Roofing Manufacturers Association Limited.

PIR Insulation



By Simon Blackham, Technical Manager at Recticel Insulation.

Poorly fitted insulation in wall cavities can

lead to a whole host of problems which

prove time consuming and costly to

correct. Cold spots are a common outcome

caused by the errant practice, which in-turn can

lead to damp and moisture seeping into the

building’s fabric. When this occurs, the occupiers’

comfort and wellbeing could be compromised by

instances of mould and bacterial growth, whilst

the property’s thermal performance risks being

debilitated to create a less than ideal indoor

environment. So how can such issues

be avoided?

No matter the quality of

insulation, if it is not installed

correctly or suitable for the job in

hand, its effectiveness will be

nullified. This could also be the

outcome if the material is damaged,

ancillary items such as wall ties penetrate the

insulation, or if the ties are sloping incorrectly

towards the inner leaf. An easy issue to avoid at

the installation stage is cavity ties becoming

blocked with mortar ‘snots’ and bridging the

residual clear cavity. Ties, when sloping

outwards, will ordinarily return moisture to the

building’s exterior leaf via cavity trays which have

weep vents to facilitate the moisture’s escape.

However, when the trays themselves are also

blocked by debris such as brick ends, trapped

moisture may then seep back onto the inner wall,

eventually leading to damp spots and damage to

the internal fabric.

Another link between poor installation practice

and performance is forged with bad detailing at

vital junctions, weep vents and cavity trays.

Equally, good care should be taken to provide a

thermal seal for cavity wall openings within the

Left: Simon Blackham. Above: Recticel offers a number of high performance insulation solutions.

construction, such as flues

and ventilation outlets, and

around window and door

reveals. Large gaps between

insulation are also to be avoided to

optimise protection against damp and heat loss.

In terms of specification, issues are likely to

occur if partial-fill insulation is used as a full-fill

insulation without the necessary residual cavity

(conventionally, 50mm with partial fill). If this

occurs, the reduced clear cavity and the

insulation board’s straight edge risks allowing

moisture to more readily track the cavity and

result in wind-driven rain reaching the inner leaf.

Tackling the issues

Good practice should include operatives

familiarising themselves with the installation

requirements of each product, and obtaining

installation instructions from the insulation

manufacturer. It’s also advised to refer to thirdparty

guidance and certification such as the

BBA certificate, best practice guides from

bodies such as the NHBC, and any building

regulation documentation e.g. Approved

Document C (England).

During the installation’s initial stage,

consideration should be given to material

tolerances to ensure the required residual cavity

width can be maintained. This may mean slightly

increasing the building footprint during the

preparation and “setting-out” process. The site’s

surrounding environment should also be taken

into account, as the insulant’s suitability can

depend on a site’s exposure to wind-driven rain.

This will also help decide requirements such as

mortar jointing and detailing, and any additional

waterproofing of the external leaf, as well as

minimum residual cavity thickness.

Installation issues aside, good management is a

precursor to successful project completion. This

includes avoiding damage to insulation materials

by ensuring they are protected and stored

correctly at all times on site. Additionally,

ensuring that walls are protected from the

elements during operational downtimes will

prevent a work programme being delayed due to

issues with damp or frost.


Quality must not be lost with desire to ‘build, build, build’

Through its development of thermally-efficient insulation products and its

continued membership of the National Home Improvement Council (NHIC)

which promotes the benefits of safe, sustainable homes, Recticel has

demonstrated a commitment to improving the energy performance of the

nation’s housing stock. Last year, Boris Johnson urged the country to

‘build, build, build’ its way out of a projected recession in the wake of the

coronavirus pandemic. Building for build’s sake, however, could lead us to

constructing ourselves a retrofit nightmare further down the line.

Quality must not be dispensed in favour of numbers, lest we forget that the

reason the NHIC was set up nearly 50 years ago was to improve living

standards and reduce fuel poverty amongst cash-strapped households. To

our shame it’s a problem that’s as prevalent today, with far too many

residents struggling to pay fuel bills that have been inflated by their

property’s poor energy performance. Therefore, for the sake of occupants’

quality of life, the environment, and the government’s net-zero ambitions

for 2050, the construction industry must support the NHIC in its continued

call to improve building standards in order to provide better social and

private housing throughout the UK. With the clock already ticking on that

mid-century deadline, the time for sharpening up all aspects of building

delivery is now.

Recticel’s quality polyisocyanurate (PIR) range

Recticel has a range of full and partial-fill PIR solutions to suit a variety of

application requirements. Experts in innovation, Eurowall+ offers a fine

example of how we’ve been able to develop a system that benefits the

installer and end user. The rigid full-fill insulation board was the first of its

kind to feature a tongue-and-groove joint on all four edges, thus making it

capable of achieving a U-value of 0.18 W/m2K in a traditional 100mm

masonry cavity wall. Its beneficial size, coupled with its improved

airtightness from the tongue and groove joint, extracts more performance

compared to typical partial-fill solutions, without widening the footprint of

the external wall.

Our 90mm Eurowall+, when installed within a 100mm masonry cavity

wall, means the 10mm clear cavity is maintained and traditional

bricklaying methods can be followed. This leads to reduced labour times

and a cost-effective installation.

Due to its ingenious composition, Eurowall+ eliminates many of the

potential issues associated with installing insulation. It makes lighter work

of an extremely important process, whilst delivering a quality product with

reliable long-term performance.




By QI (Quantum Insulation Ltd)

Adhesive bonding of

insulation boards

Through this column we have talked a lot about the requirements for inverted

roofs, so, Dear Reader, you would be forgiven for thinking that QI only supply

insulation board for inverted roof

applications: an understandable misconception.

Our focus on inverted roof applications has been, and will continue to be,a regular

feature of

this column clarifying the correct design, function and assembly of


inverted roof; but we don’t want you all thinking we are a one trick pony,

so we

thought we would take a look at warm roof


BS 8217:2005

covers various bond strengths depending upon substrate type and whether

controlled partial bond or full bond. Since this British Standard was published

and bond strengths of up to 10 kN/m 2 compared to 3.6 kN/m 2 for bitumen.

However, there are factors that the contractor needs to be aware of.

MCP’s generally come in 2 types, ‘free pour’ and ‘controlled rise’

Free Pour: typically a rectangular 6.5 kg tin covering up to 60m 2 . To use

remove the lid and puncture a hole in the bottom. The liquid adhesive is


a continuous 10mm to 20mm bead in an ‘S’ pattern at 150m or


moisture in the air. A simple process but there are some considerations:

1. The insulation board should not be larger than 2.88m 2 .


Insulation should be applied within 5 minutes.

Full cure takes up to 6 hours.

3. Consistent application is key; a thicker bead risks the adhesive not fully curing

in the centr e and outgassing CO 2 over time, lifting the insulation boards.

4. If applying a carrier layer over the insulation on small roof areas/balconies,

bead thickness is critical and applying extra adhesive is to be avoided, see

3 above.

5. Disposal requires the can to be empty except for a skin of adhesive, or to be

left for the contents to fully cure.

Controlled Rise: a pressur container that contain the adhesive


foamed. A hose and ‘wand’ are attached to the container. The tap

on the container is opened, adhesive comes out in a 19mm to 25mm bead

applied in an ‘S’ pattern at 300mm centres. Coverage is up to 100m 2 . One


Application is again simple but also with its considerations:

1. The insulation board should not be larger than 2.88m 2 .

2. Insulation should be applied within 5 mins. Full cure takes 20 to 40 mins.

3. Wands and hoses need cleaning or replacing.

4. Any residual material at end of use should be sprayed into a cardboard box

and left 24 hours to cure, it is then non-hazardous waste.

5. Cylinders need to be de-pressurised for disposal, which is simply done by

following the instructions. After 1 week the cylinder is metal waste.

Next month’ ’s QI by QI –

Compliance &

Accr reditation,

do they matter?


Contact Recticel Insulation




All You Need to Know About:



Designers and installers of flat roofing solutions are often told what they ‘should’ know

about products and standards. In this ongoing series, Rob Firman of Polyfoam XPS looks at

different aspects of flat roofing design and construction and helps to demystify them. This

month he looks at correction factors applied to U-value calculations for inverted flat roofs.

How can moisture affect inverted roof


Calculation of the thermal transmittance

(U-value) of an inverted flat roof accounts for the

effect of moisture through two corrections. The

first is any change to the insulation’s thermal

conductivity due to moisture absorption; the

second is the cooling effect of rainwater running

over the waterproofing layer.

Obtaining design thermal conductivity by

moisture correction

The thermal conductivity of an insulation material

in a U-value calculation should reflect the

conditions in which the product will be used. In

an inverted roof, the thermal insulation is

positioned above the waterproofing layer,

exposing it to moisture.

Moisture is an effective conductor of heat, so

moisture absorption can worsen the thermal

conductivity of an insulation material. Different

insulation materials demonstrate different

moisture absorption characteristics, which is why

it’s important to select a suitable insulation

material where the effect is minimised.

ETAG 031 describes the procedure for correcting

the insulation’s thermal conductivity for use in U-

value calculations. Declared thermal conductivity

is multiplied by a moisture conversion factor to

give a design thermal conductivity.

In last month’s issue of Total Contractor we covered

BS 6229:2018, and section of that standard

says: “Calculations of the thermal transmittance of

specific roof constructions should be carried out …

“Moisture is an effective

conductor of heat, so

moisture absorption

can worsen the thermal

conductivity of an

insulation material”

using design thermal conductivity (including

moisture conversion factor Fm).”

The factor is derived from an insulation’s

moisture conversion coefficient, and a calculation

value for moisture content based on the average

tested value for long-term water absorption by

diffusion and freeze thaw.

What information is needed to calculate a

rainwater cooling correction?

BS EN ISO 6946:2017 describes the combined

method for calculating U-values. Annex F gives a

correction procedure for inverted roofs “due to

rainwater flowing between the insulation and the

waterproofing membrane.” The rainwater absorbs

heat energy from the structure and increases the

rate of heat loss from the roof.

This correction is completely separate to the

moisture conversion factor described above. That

is applied to the thermal insulation separately,

whereas rainwater cooling is calculated as a

correction to the U-value for the roof build-up as

a whole.

Calculating the rainwater cooling correction

requires three values:

• p (measured in mm/day) is the average rate of

rainfall during the heating season. It is based on

location-specific data and varies significantly

across the UK. Both BS EN ISO 6946 and BBA

Information No.4 explain where this data can be

derived from.

• f is a drainage factor. It expresses the

percentage of the rainfall (p) that reaches the

waterproofing membrane.

• x (measured in W.day/m2.K.mm) is the factor for

increased heat loss. It is a standard value of 0.040

W.day/m2.K.mm, as given in BE EN ISO 6946.

Rainwater cooling is a fundamental part of the

combined method for calculating U-values. The

overall U-value correction and its subsequent

impact on insulation thickness is strongly

dependent on the three values listed above.

Inverted roof systems typically feature a water

flow reducing layer (WFRL), which is tested to

establish the value for f that can be included in

U-value calculations. See the May 2021 issue of

Total Contractor to read our summary of WFRLs.

For both moisture conversion factors and

rainwater cooling corrections, inverted roof

system manufacturers obtain third party

assessment and certification to provide reliable

information about their impact on system


Contact Polyfoam XPS about inverted roof

U-value calculations on the details below:

Contact Polyfoam XPS









Thickness to achieve

0.13 W/m 2 K U-value within an inverted roof








Advertorial: ROCKWOOL



Supporting the creation of buildings which

are as safe as they are functional and

comfortable, ROCKWOOL has continued

investing in product development and delivered a

series of updates to key fire protection products

which make it easier for building envelope

stakeholders to respond to developments in the

market, and achieve Building Regulation

compliance for flat roofs and facades.

Fire stopping for rainscreen

systems simplified

To streamline

specification and

installation of fire

stopping solutions in rainscreen

systems, new and improved ROCKWOOL SP

Firestop OSCB provides two clear options which are

proven to deliver up to 120 minutes fire integrity

and insulation when tested to ASFP TGD-19.

Designed for use in conjunction with ROCKWOOL


now available for cavity widths up to 600mm,

inclusive of a 25mm open air space (OSCB 25),

or cavities up to 425mm with a 44mm air space

(OSCB 44). The variants are easily identifiable by

their respective white and red weatherproof

polythene wraps, and are simple to store, handle

and install.

SP Firestop OSCB is constructed of an

intumescent strip fixed to non-combustible stone

wool insulation. When exposed to fire, the

Above: Made from stone, ROCKWOOL stone wool insulation

delivers more than just fire resilience.

intumescent strip expands to

prevent the passage of smoke

and flames through the rainscreen


A dedicated solution for parapet

walls and upstands

To help specifiers and contractors mitigate fire

risk in the fifth façade, ROCKWOOL has expanded

its flat roofing range with new HARDROCK®

UB34, a non-combustible upstand board

specially designed for parapet walls and

upstands on flat roofs.

ROCKWOOL HARDROCK UB34 is constructed of a

50mm slab of ROCKWOOL stone wool insulation

bonded to a rigid 6mm fibre cement board, which

means the system is impact and weather

resistant. With the insulation component offering

a thermal conductivity of 0.034 W/mK, it is a

thermally efficient upstand insulation board that

is also non-combustible in case of fire.

The product’s proven thermal performance

insulates upstands to reduce thermal bridging,

cutting down on overall heat loss from buildings

to improve energy efficiency. HARDROCK UB34 is

suitable for installation in the external walls of

relevant buildings over 18m, as it is rated

Euroclass A2-s1, d0 as required by Building

Regulation 7(2)**.

HARDROCK UB34 is compatible with a wide range

of flat roof systems, including single-ply and


BBA approval for HARDROCK Multi-Fix


Tapered have been certified by the British Board

of Agrément (BBA) following rigorous testing of

their durability, thermal and fire performance.

The BBA certification is the latest in a series of

accreditations for HARDROCK Multi-Fix (DD) and

Left: ROCKWOOL HARDROCK UB34 is designed

specifically for parapet walls and

upstands on flat roofs.

Below left: ROCKWOOL SP

Firestop OSCB is easily

identifiable by its white

(OSCB 25) or red

(OSCB 44)

weatherproof polythene wrap.

Tapered, substantiating the products’ ability to

help specifiers simultaneously deliver thermal,

fire and acoustic protection for flat roofs.

Alongside achieving European Reaction to Fire

Classification of A2-s1,d0 non-combustible,

HARDROCK Multi-Fix meets the highest LPCB

standards: (LPS 1181: Part 1 Ext A).

ROCKWOOL HARDROCK Multi-Fix is compatible

with a range of bonded and mechanically fixed roof

systems, including single-ply, EPDM and liquid

membranes, bitumen, and green roofs. The Tapered

variant of the product is pre-cut to provide a fall in

the roof level, aiding water management.

To further support specification and installation of

building envelope solutions, ROCKWOOL has

developed a series of Resource Hubs which bring

together key information and resources for a

range of applications – including Resource Hubs

for Flat Roofs and Ventilated Facades.

Each Resource Hub helps stakeholders to quickly

find the information they need, and access

technical tools, product literature and case

studies more easily than ever. To start saving

time on specification, please visit:


*SP Firestop OSCB is only compatible for use in conjunction


**The ban on combustible cladding is applicable to relevant

buildings over 18m as specified in Building Regulation 7 (2).






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Insulation Updates

For further info on all these updates and more, visit www.total-contractor.co.uk


SuperFOIL Insulation has received

accreditations from the Insulation Assurance

Authority (IAA) and GDGC Qualitymark


training. The IAA gives homeowners,

stakeholders and funders

confidence that any insulation

work is carried out to the highest

strict application process to ensure its

products meet the GDGC’s high

standards and upon agreeing to

a process of constant

standard, ensuring it is done

monitoring, SuperFOIL is now

Already accredited by the British Board of Agrément

‘right first time’. SuperFOIL was

recognised as a GDGC approved

(BBA) and certified by groups including LABC, DIBt

named an IAA system designer


& ZAG, these two latest accreditations give

after its products were audited and

customers and installers even greater confidence in

The accreditations mean installers

deemed to satisfy all IAA requirements.

the quality and safety of SuperFOIL Insulation.

can offer insurance-backed guarantees, giving

GDGC is an insurance broker specialising in assurance that the products being used are

The IAA is an industry body which provides a

offering insurance-backed guarantees on home high quality and fit for purpose.

quality assurance framework covering technical

improvements such as insulation. Following a

guidance, consumer protection, certifications and



ROCKWOOL has enhanced its CPD programme with the addition of on-demand modules at


The new option makes professional development more accessible than ever by giving users the opportunity to complete CPDs at a place and time of their

choosing. The on-demand CPDs complement the wider CPD programme, where all modules can be accessed through presentations hosted by a member of the

ROCKWOOL Specification Team in-person or virtually. The full suite of ROCKWOOL CPDs can now be accessed according to user preference, with further support

available at any time. The on-demand solution launches with four topics initially, providing practical insights and knowledge on current legislation, product

performance and best practice for fire safety. The on-demand range is applicable to the main areas of the building envelope, specifically facades and roofs, and

features the CPDs: Fire Safety and Tall Building Facades; A-Rated Products; Building Envelope; and Compartmentation. Paul Barrett, Head of Product

Management at ROCKWOOL, commented: “Professional development opportunities are hugely important in construction, as they help specifiers and architects

to stay abreast of developments in legislation and best practice. The new on-demand CPD option gives users flexibility and choice, so that every individual can

access professional development as and when it suits them. Of course, we are still very enthusiastic about hosting CPD sessions in person so that we can

assist attendees with any specific requirements – just get in touch to book!” www.rockwool.com/uk/on-demand/


With the popularity of extensions and loft conversions almost literally going through the roof, merchants

are reporting a huge rise in sales of insulation products – particularly of those produced by Actis.


Jewson Sales Manager Brad Ellis said: “Insulation and insulating membranes have been flying out of the door over the

past year, with a current loft promotion across stores in the south of England generating even more interest. Improvement projects are currently on the property

owners’ minds. We currently have customers using Actis for loft and barn conversions and complete build projects, as well as home offices and playrooms. We

have ensured that the big brands are stocked in these branches, including Actis, to give our customers choice and the ability to purchase the stock then and

there. We have purpose-built loft displays in dedicated branches to showcase our extended loft offering, which has proved popular with our core target

audience, as well as attracting new customers to the branches who are keen to know more about the products we stock. Our customers have welcomed our loft

launch in the area and are now asking questions in the branches about why Actis is so good! As well as Hybris, the core insulation product, sales of H Control

Hybrid, an insulating vapour control layer and Boost R Hybrid, an insulating breather membrane, have also generated interest, with more customers purchasing

these products. This is largely thanks to the Actis Regional Sales Manager, Liane Bayliss, giving technical training to the sales team who have been massively

receptive to the product. Our customers enjoy the flexibility, efficiency and the economic saving that comes with this product when installing on their projects.”


Insulation Updates

For further info on all these updates and more, visit www.total-contractor.co.uk


A 2021 version of the ROCKWOOL Red Book

has now been released, capturing a series

of key technical updates to ensure that this

interactive guide to stone wool insulation

will continue to save specifiers time, and

make it simple to identify the right product

for facade, wall, floor, and roof applications.

Launched last year in an all new interactive

format, the ROCKWOOL Red Book is a powerful

digital tool which provides access to technical

data, product certification and a wide range of

specification support materials across the

ROCKWOOL product range.

One of the major updates for 2021 is the

inclusion of British Board of Agrément (BBA)

certification for the ROCKWOOL HARDROCK

range of flat roofing products. ROCKWOOL

HARDROCK Multi-Fix (DD) and Tapered were

recently certified by the BBA following rigorous

testing of their durability, thermal and fire

performance. This independent accreditation

validates the suitability of these products in a

flat roof application. Useful interactive links to

this certification can now be accessed directly

through the ROCKWOOL Red Book.

External Wall Insulation Dual Density Slab has

been added as a new product, providing

specifiers with information on its use in ETICS

external wall systems. Made with ROCKWOOL

dual density technology, the upper layer has a

distinctly higher density which provides a robust

outer surface for applying render. Thermal and

acoustic performance data for this new product

can be easily accessed from the ROCKWOOL

Red Book, as well as relevant NBS clauses.

The update for the latest edition also includes

updated digital links to approved documents

and regulatory guidelines, as well as new

content on the aged performance of stone wool.

In response to customer feedback, extended U-

value data is provided for floors, and imagery

and technical drawings have been updated and

improved throughout the guide.

Application-driven, the ROCKWOOL Red Book

provides detailed guidance for designing

ROCKWOOL stone wool insulation into all types

of buildings. “Our customers tell us that the

ROCKWOOL Red Book is their go-to guide to

specify insulation. We’re continually improving

this as a practical guide that’s easy to use and

saves customers time. We want to ensure it

remains relevant and accurate,” commented

Paul Barrett, Head of Product Management at


Download your copy here:



The StoSilent Distance system has been

installed at the new Prof. Lord Bhattacharyya

Building, home of the National Automotive

Innovation Centre (NAIC), on the University of

Warwick campus.

The NAIC is a unique research and development

facility where academic and industrial teams

work together to develop the future of transport.

“The architects – Cullinan Studio – wanted to

encourage people to come together for research,

demonstrations, meetings and breakout sessions,

so acoustics were a key consideration within this

multiple-use building”, explained Sto Technical

Consultant for Acoustics, James Gosling.

“It was especially important in the large, open

atrium area which forms the centrepiece of the

building. This was designed to be a flexible

space, and so it was a requirement to correctly

balance the challenges of

attenuation, reverberation,

speech intelligibility and foot

traffic. The aim was to create an

acoustic environment that was

reliable and practical, while also

achieving a very distinctive

design aesthetic.”

Over 2,000m² of the StoSilent Distance system

was installed around the curving balustrades and

street level ceilings which feature in the multilevel

atrium area. “This appeared at first glance

to be a challenging project as the curves and

angles involved were quite specific and

demanding, but Sto were always on hand to help

out,” explained Leigh Reading of CG Reynolds, a

Sto-authorised acoustic installer for the Sto

system. “They provided bespoke training for our

ceiling fixers, and made a number of site visits

Above: Sto’s StoSilent Distance acoustic

system has been installed at the new

Prof. Lord Bhattacharyya Building.

during the installation to provide

support. The StoSilent Distance

system proved to be extremely

flexible, and Sto were never more

than a phone call away if we

required any advice.”

The StoSilent Distance system

includes the Sto minimal void

SW150 metal profile sub-construction which can

be installed and adjusted to suit a very wide

variety of application requirements, thus

providing a tremendous range of design

possibilities. The acoustic boards are made from

96% recycled glass, making them lightweight

and easy to install. They provide excellent

acoustics, and aesthetically provide a modern,

clean, monolithic appearance.





leading to accredited

For more information:

0845 1547188 training@spra.co.uk


Simple application

Easy online job registration




law services


• Call us on 01292 268020



Site Workwear



Peter Dumigan, the Managing Director of Hultafors Group UK, owner of Snickers Workwear,

says tradespeople really can have it all, with environmentally conscious workwear that

performs well and looks good on site too!

Combining hi-tech fabric technology with

verifiable sustainability, Snickers

Workwear delivers market-leading work

clothes solutions for a wide range of working

environments, hazards and weather conditions.

With firms and individuals increasingly focused

on environmentally responsible business

activities, Snickers Workwear’s eco-friendly

garment solutions could prove to be the right

‘sustainable choice’ for you and your business.

For example, with government legislation on the

horizon, utilizing the Snickers Workwear garments

made from recycled polyester, organic cotton and

muelsing-free fabrics, as well as the ‘100%

Circularity’ in EMMA safety footwear, will deliver

peace of mind and compliance in an increasingly

demanding corporate world.

This socially responsible approach to kitting out a

workforce is complemented by the brands’ wellestablished

hallmarks of comfort and

functionality. They’re delivered through the use of

stretch fabrics and a comprehensive sizing

system which ensures that whatever the size of

your workforce, there’s a product to fit each

individual perfectly – for improved wellbeing and

performance at work.

Snickers Workwear clothing is tested for real

environments from the arctic circle to the

southern Mediterranean, tried and tested in

extreme environmental conditions, including cold,

heat, wind and rain. But not only are these

working clothes tested for performance, they’re

now tested with regard to ‘Environmental

Sustainability’. What makes these garments so

appealing to individuals and businesses alike is

not only the ergonomic body

mapping designs, but also the

21st century fabrics including the

latest in recycled, organic and

sports fabric technology.

Design and development has

always been driven by continual

research into user needs and

experiences in a variety of

working environments and

weather conditions, but

nowadays recyclability

and carbon footprint

impact is a key

part of that

evaluation. So, it’s

not just the physical

demands on the body

when working hard on site or in sports and leisure

activities that’s researched, it’s the physical

demands that product manufacturing and

disposal place on the world around us that

matters too.

So, if you’re thinking about what’s most practical

– and beneficial – to wear this autumn for work

or leisure, some of Snickers Workwear’s LiteWork

and FlexiWork clothing is dual purpose and works

hard to reduce our collective carbon footprints.

If it’s performance you need, check out the

upgraded lightweight and breathable 37.5 fabric

technology in Snickers Workwear’s mid- and

base-layer clothes. With superb cooling

technology, they’re great for demanding tasks on

site as well as high intensity gym work, circuit

training, jogging, hill walking and mountainbiking.

The new AllroundWork styles are made

Left: Peter Dummigan, Managing Director of Hultafors

Group UK; Above: Snickers’ Merino Wool options.

from highly functional waffle-structured 37.5

fabric for optimal ventilation, cooling and

moisture transport to keep you feeling fresh for


Combining market-leading fabric

technology with verifiable sustainability

But if you want to be more than just cool and

comfortable at work this autumn – and do your

bit for saving the planet – the ‘Verifiable

Sustainability’ in Snickers Workwear’s new

garments will suit you down to the ground. The

brand aims to be at the forefront of sustainability

in workwear which is why these new products are

made of 100% recycled polyester with a biobased,

anti-odour finish, plus a smooth texture

and efficient moisture transport for great working


If your focus is on being kind to animals, the

Continued on page 78


Perfect For Your Next

Re-Roofing Project!

Designed with the environment in mind

Does your current supplier have the

lightest synthetic slate tile on the


Liteslate can weigh as little as 10kg per m²,

ideal for projects in need of a light footprint,

or older structures that cannot hold heavy,

traditional tiles.

Does your current supplier care

about the environment?

14 million tonnes of plastic enter the ocean

every year due to the use of virgin plastics.

Britmet Liteslate is manufactured using over

90% recycled polymers. By the end of 2021,

Britmet will recycle over 3 million kilograms of


Does your current supplier achieve a

12 ° Pitch?

Liteslate was tested by the BRE for roof pitches

as low as 12 °, offering the ideal lightweight

roofing solution for our customers, with a

traditional tile appearance.

Does your current supplier

manufacture in Britain?

By manufacturing in the UK, we pride ourselves

on upholding a high standard of professional

ethics. With a central location like the West

Midlands, we work with a number of distribution

networks, boasting national coverage.

Does your current supplier use

more than 30% limestone content?

Limestone content over 30% often leads to

colour fade in synthetic slate. Thats why

Britmet only uses 20% to ensure you have a

roof that lasts a lifetime.

Does your current supplier focus on

usability rather than quality?

As Liteslate has a reduced limestone content,

it will not crack, split or break. However, it can

easily be cut using a circular saw or a jigsaw.

Check out our amazing colour range!

sales@britmet.co.uk | 01295 250998 | www.britmet.co.uk | #TheBritmethod

Site Workwear

Continued from page 76

Sustainable Merino Wool mid- and base-layer

clothes are ‘Mulesing-free’, which will help you

stay warm or cool because of the nature of its

100% all-natural Merino Wool fabric that delivers

optimal comfort for all kinds of working

environments and leisure activities. Designed by

nature for excellent ventilation and insulation,

Merino wool is extremely soft and naturally

odour-preventive for an all-day fresh feel. It’s

also temperature-regulating and repels water and

dirt particles, plus it’s also anti-static and as

mentioned earlier, Snickers Workwear ensures

that the wool it uses is produced in kind-toanimals,

‘Mulesing-free’ environments.

If recyclability is your particular focus in ecofriendly

priorities, then the AllroundWork fleeces

and bodywarmers could be your ‘Sustainable

Choice’. Made from 100% recycled polyester, the

POLARTEC garments are comfortable and

lightweight with great freedom of movement.

They’ll also deliver just the right warmth and

comfort to keep your body warm in chilly early

mornings or comfortably cool in the warmer


100% circularity in materials technology

to really improve your carbon footprint

If you want to ensure 100% circularity in what

you’re wearing, a product that’s completely made

Sustainability is at the heart of Snickers Workwear’s offering.

Above: Fleeces from Snickers Workwear.

from a combination of recycled materials and

materials that are recyclable is EMMA,

Sustainably Responsible Safety Footwear;

definitely a brand worth looking at.

EMMA is a socially responsible brand because

it’s totally committed to sustainability and

reducing waste. Every shoe, trainer or boot in its

range is safe for the environment with a ‘100%

‘circular’ manufacturing, usage-mapping and

recycling process. So, to make a positive social

impact in your workplace, if your ordinary safety

footwear just isn’t contributing to your

sustainability policy, you can be sure there’s an

EMMA product that is.

While style, comfort and functionality have been

key drivers in Snickers Workwear clothing

development over the years, fabric performance

and sustainability is now central to the technical

design of the garments and footwear, just as it is

in performance sports and leisurewear.

The result is environmentally-friendly,

ergonomically designed dual-purpose working

clothes and footwear that are not only designed to

meet the physical demands that tradespeople

face at work, but are also ideal for some sports

and leisure activities – plus reducing your carbon

footprint too!

37.5 fabric technology: making working on site a

better experience

Peter says: “On a hot day you really need a garment

made from a fabric that has the ultimate capacity

for ventilation and moisture transport. That is why

we at Snickers Workwear have chosen 37.5

technology to provide hardworking craftsmen and

women with the coolest experience.”

37.5 is a ground-breaking new fabric technology –

largely used in high-performance sportswear – with

unmatched efficiency when it comes to ventilation

and moisture transport. Instead of being applied to

the surface of the fabric, 37.5 fibres are woven into

the fabric. This means they never get washed out so

you get the full benefit wear after wear.

5 cool facts about 37.5 ventilating technology

• The active particles used in 37.5 technology are

derived from natural sources such as coconut shells

and volcanic minerals.

• Fabrics with 37.5 technology dry up to five times

faster than performance fabrics without.

• The hotter a user gets the stronger the drive force

removing moisture becomes.

“Fabric performance

and sustainability is

now central to the

technical design of the

garments and


Contact Snickers Workwear


01484 854788



For further info on all these updates and more, visit www.total-contractor.co.uk


‘Upgraded, innovative and

sustainable’, that’s how

Snickers Workwear

describes its Climate

Control clothing, which

delivers exceptional comfort

and performance.

The company says there’s a

range of garments that use

socially and environmentally

responsible fibre technology

such as 100% recycled

polyester, as well as others

available in high-tech

breathable fabrics.

For consistent comfort, the

seamless designs are also

available in 37.5 ventilating

technology for efficient body

moisture transport, as well as

odour-reducing merino wool

to suit different types of work,

whatever the weather


These cutting-edge

AllroundWork, FLEXIWork and

LITEwork designs and fabrics will keep you cool,

warm and dry when you need to be. All the

garments are made from quick drying,

lightweight fabrics that come with special

ventilation features to control and regulate the

heat from your body.

All in all, Snickers Workwear Baselayer clothing

will give you the kind of fresh working comfort

you wouldn’t have thought possible.

For further info call 01484 854788; check out

www.snickersworkwear.co.uk and download a

digital catalogue, or email



WernerCo has announced a new £10 million investment plan, including the relocation of its UK

Distribution Centre to a new purpose-built facility.

Following a positive 2020, which saw strong levels of customer growth, the new WernerCo facilities WernerCo has announced a new £10m investment plan.

currently being built in Burton will enable the manufacturer to continue to drive UK business performance. As well as a larger facility with increased storage

space to enhance sales and distribution capabilities, the new 170,000 sq ft state-of-the-art development will also act as a central office for the UK that will

host Customer Care, the marketing department and a showroom and training facility. This investment will also see new jobs created for the local community,

including essential roles within the warehouse and logistics team. Justin White, Managing Director at WernerCo, commented: “Despite the challenges faced in

2020, WernerCo had an incredibly strong year, with sales in the DIY and consumer market continuing to soar across our core brands such as Werner and

Youngman. Following this, we are delighted to be re-investing into our warehouse and logistics capabilities with our new facilities. The new facilities are

ideally located with good transport links, allowing us to continue offering services such as next-day delivery. This relocation will also provide us with

additional space, further enhancing our operations and enabling us to continue supplying our best-selling products to meet customer demand. Additionally,

we are delighted that this new facility will offer a large number of new job opportunities at a time when they are needed most.” www.wernerco.com


Screwfix has launched a rapid delivery service called Screwfix Sprint which it says will deliver orders

direct to site, within 60 minutes.

Following a successful trial, Screwfix will begin to roll-out the service, which it says will meet the growing

demand for speed and convenience from Britain’s tradespeople. The latest delivery proposition will mean customers who need urgent supplies when on a

job, can order and receive their essentials within 1 hour, without losing time by leaving site. Sprint is rolling out now and by the beginning of November,

more than 30 cities across the UK are set to benefit from the service. London, Birmingham, and Glasgow are among the cities included, meaning that the

service will be available across 34% of UK postcodes, with further rollout planned next year. Designed to offer hyper-convenience and value with just a £5

delivery charge, Screwfix Sprint is available through the Screwfix app, which has recently surpassed 1 million downloads. John Mewett, CEO of Screwfix,

commented: “We understand how busy the nation’s tradespeople are and we are always looking for ways to provide our customers with even greater

convenience, meaning they can get what they need, when they need it. “Our 1 minute Click and Collect service is already hugely popular and the trial of

Screwfix Sprint across Bristol showed how, in addition, tradespeople value 1 hour delivery to where they are working. For many, time is money, and this

means not having to leave site to collect a part, tool or other key essential needed for the job.” www.screwfix.com/help/sprint













01934 808 293




502 Worle Park Way, Weston-super-Mare, BS22 6WA


For further info on all these updates and more, visit www.total-contractor.co.uk


Instant recognition and

continuous protection at

work can be a life-saver in

wide range of work

environments from

construction and engineering,

ProtecWork families, a whole host of different

garments to satisfy the specific requirements of

Classes 1, 2 and 3 protection levels.

hazardous conditions.

to handling and logistics;

All these ‘outstanding’ products combine

professional trades and lighter

That’s why Hi-Vis working

Snickers Workwear’s unrivalled hallmarks of

manual work; to specialist

clothes are an integral part of

functionality and comfort with the requirements

engineering requiring high

every man and woman’s PPE

of the EN20471 standard for high visibility

standards of certified

package – especially in dim,

warning clothes.

personal protective clothing.

dark or variable light


There’s jackets, trousers, For further info call 01484 854788; check out

shorts, toolvests, shirts and www.snickersworkwear.co.uk and download a

With this in mind, Snickers

fleeces in the LITEWork, digital catalogue, or email

Workwear has an extensive

FLEXIWork AllroundWork and sales@hultaforsgroup.co.uk

range of garments to suit a


Makita has added two 12Vmax CXT multi-line lasers to its offering. The multi-line lasers project one horizontal and two

vertical 360° lines, and include a precise self-levelling feature to enable simple setup, layout and alignment.

The 12Vmax CXT Red Multi-Line Laser (SK700DZ) and 12Vmax CXT Green Multi-Line Laser (SK700GDZ) are versatile and durable

with a range of features to make work on site as simple as possible. The Red Multi-Line Laser has a range of 25 metres in each

direction (50 m diameter) while the green lasers of the SK700GDZ provide an increased range of 35m (70m diameter) and better line visibility in brighter

conditions. The robust units are IP54 (dust and splash water) rated, have an operating temperature range of -10 to 50 ºC and feature a ¼ inch tripod thread for

easy mounting. Each vertical and horizontal laser emitter on the tool projects four lines to create up to three 360-degree laser lines. Depending on what is

required, users can choose various combinations of the laser lines in addition to the full three line configuration. Single horizontal or vertical lines, vertical and

horizontal combined or both vertical lines (front to back and side to side) are available. It also includes three brightness settings for optimum visibility

depending on the environment. Kevin Brannigan of Makita UK said: “The new 12Vmax CXT Multi-Line Lasers have been designed for use on a range of site

layout, first- and second-fix tasks. The multi-line configuration and self-levelling mechanism makes it simple to align and layout everything from doors and

windows, floors, pipework and electrical installations to tiling, lighting and kitchen and bathroom installations.” https://makitauk.com/products/measuring


Global workwear brand Dickies has announced details of the upcoming Considered Essentials

collection launch, aimed at workers who demand garments that work as hard as they do.

Dickies has supplied workers with tough, quality clothing for almost 100 years, a milestone that will be

celebrated in 2022. In that time, Dickies has evolved to encompass a full range of performance wear as

well as a workwear-inspired range. Product highlights include the Everyday Coverall, Action Flex Trousers,

Okemo Sweatshirt and Stowe Hoodie. All products within the collection provide comfort and technical

details, pieces like the Acting Flex trousers offer knee pad pockets, mechanical stretch for movement and

pocket with zip opening for optimal accessibility and safety. Dickies’ workwear garments are updated to

offer more support and lasting comfort, while staying true to the core garments and their history. The

collection is designed for the worker and with the worker’s lifestyle in mind.






Introducing the new Siderise

non-combustible cavity tray (NC-CT).

A unique trilateral design that’s flush-fitting, fully aluminium

wrapped and pre-filled with non-combustible stonewool, making

it incredibly quick and easy to install as well as A2-s1,d0 rated.

Its exclusive design* is engineered for use with Steel Framing

Systems and blockwork inner leaves without hot works, screwing

or chamfering, whilst corners are easily cut on-site. Backed by

forty-five years of cavity barrier innovation, full site support

services and our market leading inspection app, Siderise NC-CT

is another innovation to help make projects easier.

Your Workmanship. Our Ingenuity. Swift Installation.

Discover more at Siderise.com

*Patent pending

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