July 2018

JULY 2018 

Asbestos Advice 

Asbestos Advice 

Contractor’s Q’s 

Tapered Talk 

FEATURES 

• GROWING PAINS? 

TOP TIPS FOR GREEN ROOFS 

• UPSTAND & DELIVER: 

GET YOUR UPSTANDS RIGHT 

• ACE SERVICE: 

ROOFING ON COURT NO. 1 

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Editor’s Comment 

MATT DOWNS 

EDITORIAL DIRECTOR 

MATTDOWNS@MEDIA-NOW.CO.UK 

COVER PIC: 

COURTESY OF RADMAT 

A busy month at Total Contractor culminated in helping to judge 

the flat roofing element of the BMI Apprentice of the Year Awards. 

The two-day event, which now sees an overall winner from both the 

Redland Pitched Roofing and Icopal Flat Roofing finalists, puts 

apprentices from across the UK through a number of assessments 

which takes them way out of their comfort zone by focussing not just 

on the practical side of roofing, but also the soft skills – interacting 

with customers and presenting themselves professionally. You can read 

about the winners on p.06, but as Kieran Forster, Icopal Apprentice of 

the Year for 2018, told me: “Just being here has shown me I can push 

myself more – it’s opened up my eyes to what I need to do and what is 

out there.” It’s clear all the apprentices left with new skills and 

confidence which will help them in their careers. Look out for the full 

review of the event in the August issue of Total Contractor. 

Elsewhere in this issue, our new column from John Mercer looks at 

unintended consequences of improving roofing standards (p.20); Andy 

Rowlands talks difficult customers and tells us the most frustrating 

thing about being a roofer in Contractor’s Q’s (p.28); and as the NFRC 

responds to claims in Which? magazine that roofers rank very low in 

the public’s trust of trades (p.12), Jackie Biswell talks accreditation in 

her column on p.68. As Jackie explains: “We believe professional 

accreditation will not only improve career prospects but also increases 

technical credibility for the employer, which ultimately brings benefits 

to the customer,” and you can’t argue with that... 

Enjoy the issue, 

NEW 

A PRIC 

C£C£OMP£GET £AY£DA£O£T£D£ARISO £PA ON 

£T 

Matt 

LOW PRICE 

Above: A contractor working on a green roof installation: See p.42 for Mark 

Harris of GRO’s advice on getting your green roof installation correct first time. 

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JULY 2018 TC 3

Contents 

FROM THE COVER 

36 ON THE UP 

Stephen Cleminson explains how to overcome 

upstand issues 

42 GREEN-LIT PROJECT 

Mark Harris talks through his key 

considerations for installing green roofs 

50 STANDING OVATION 

Will the new retractable roof on Court No. 1 be 

needed at this year’s Wimbledon? 

FREE: VAN’S BEST FRIEND! 

Enjoy your FREE RUFUS van air freshener 

courtesy of Whitesales! 

48 

FEATURES 

20 PERFECTLY PITCHED 

In a new, regular column, John Mercer looks at the 

unforeseen consequences of improving standards 

28 

28 CONTRACTOR’S Q’S 

Andy Rowlands is the first roofing contractor to answer 

Total Contractor’s questions in this new feature 

40 PIPE DREAMS 

How to prevent the performance of the roof you’re 

working on being compromised by a pipe penetration 

54 CULTURAL SHIFT 

What do the findings of “Building a Safer Future” 

mean for roofing and construction? 

62 TALE OF THE TAPERED 

James Wilkinson outlines the key points to ensure the 

insulation aspect of your flat roof project runs smoothly 

72 TOTAL RECALL 

Simon Smith looks at a bugbear of every roofer – being 

called back to site to fix problems that aren’t theirs 

4 TC JULY 2018

REGULARS 

14 CONTRACT TALK 

Tax, VAT and sole traders: honestly, it doesn’t 

always have to be so taxing! 

16 AN INSPECTOR CALLS 

This month our Inspector bursts a few myths 

about blistering 

18 NFRC TECH TALK 

Gary Walpole explains what to do if you 

encounter asbestos on site 

INDUSTRY NEWS 

06 APPRENTICES SHINE 

BMI’s Apprentices of the Year were crowned following 

two-days of tough competition 

12 PUBLIC FEAR ROGUE ROOFERS 

NFRC responds to claims by Which? that the public trust 

in roofers is extremely low 

06 

70 TOTAL VEHICLES 

How do you use your ‘company van’? It will 

have a big impact on the tax you should pay 

SECTIONS 

WWW.TOTAL-CONTRACTOR.CO.UK 

20 

TOTAL 

ROOFING 

54 TOTAL 

CLADDING 

62 TOTAL 

INSULATION 

42 


Industry News 

A BRIGHT FUTURE 

FOR ROOFING 

Above: Kieran Forster (l) and Jay Webster receive their 

prizes from Andy Dennis, MD UK & Ireland at BMI Group. 

BMI has crowned both its Icopal flat roofing 

and Redland pitched roofing Apprentices of 

the Year for 2018. 

After two-days of tough competition and 

informative presentations from a number of 

experts, Kieran Forster of Newcastle College 

and Hodgson Sayers was crowned Icopal 

Apprentice of the Year, with Jay Webster of 

Leeds College of Building and Yorkshire 

Heritage Roofing winning the Redland 

Apprentice of the Year. 

Both Kieran and Jay were awarded their 

respective trophies, certificates, goody bags 

including tools and other gifts from sponsors 

– plus their cheques for £1,000 – at a grand 

awards ceremony at Cricklade House, on the 

edge of the Cotswolds. 

Joe Burgess of ERRTG and Waveney District 

Council, and Tom Thompson of South West 

Region Training Group and A.L. King were 

both Highly Commended in the flat roofing 

and pitched roofing events respectively. 

When presenting the awards, Andy Dennis, 

Managing Director UK & Ireland at BMI 

Group, explained: “We received well over 100 

applicants for 2018’s event so all the 

finalists have done brilliantly to get here. 

Every one of the finalists has done things that 

have taken them out of their comfort zone. 

We’d like to thank all the colleges for their 

support as well as our sponsors.” 

Look out for more on the Apprentice of the 

Year in upcoming issues of Total Contractor 

MORE BIG NAMES AT CONTRACTOR’S DAY 

Contractor’s Day, the new conference and 

exhibition for roofing and cladding 

contractors – which takes place at 

Twickenham Stadium on 30th November – is 

going from strength to strength following the 

recent announcement that Marley Eternit will 

be one of the Event Supporters and BMI Group 

will be sponsoring the Skills Zone. This is in 

addition to a number of exciting new 

exhibitors who have signed up for the event. 

Andy Dunn, Publishing Director of Total Contractor 

magazine, who co-launched Contractor’s Day 

alongside the NFRC, explained that having Marley 

Eternit as an Event Supporter and the BMI Group 

as Skills Zone sponsor shows Contractor’s Day is 

making its mark in the sector, and the knowledge, 

expertise and product range of these companies 

will really add to the visitor experience. 

Andy explained: “We’ve been blown away by the 

response to Contractor’s Day; the event has really 

caught the imagination of the roofing and 

cladding sector and being able to announce both 

Marley Eternit as an Event Supporter and BMI 

Group as Skills Zone sponsor again highlights the 

calibre of exhibitor visitors can expect to see at 

Contractor’s Day.” 

The organisers explained that in addition to the 

already comprehensive list of manufacturers and 

RoofCert is the four-year programme that the 

NFRC is managing in partnership with the CITB to 

develop an accreditation programme. 

The NFRC explains on its website that whether it 

be the need to improve the quality and safety of 

our buildings or attracting a new generation of 

workers with new skills, roofing is facing some 

fundamental challenges and is under more public 

scrutiny than ever before. The NFRC states that 

despite the great work that many roofing 

contractors deliver day in and day out, there are 

BMI Group and Marley Eternit – leading players in the roofing 

sector – will be at Twickenham for Contractor’s Day! 

suppliers of materials, systems and accessories 

exhibiting at Contractor’s Day, new additions 

include ROCKWOOL, Imerys, Yeoman Rainguard, 

Cromar Building Products, Eagle Insulations, the 

Institute of Roofing, Pump House, EagleView, 

Britannia Paints, Ultraflex, Hambleside Danelaw, 

Bilco UK, Polyroof, Res-Tec, Associated Lead Mills 

and NCTS. 

Andy Dunn continued: “With four months until the 

doors open at Twickenham Stadium, Contractor’s 

Day is really starting to take shape. The Skills Zone 

will be a real attraction and hub of activity for 

visitors alongside our two seminar theatres, and of 

course all the exhibitors will help make 

Contractor’s Day an event not to be missed.” 

He concluded: “We’d like to thank the many 

companies who will be exhibiting and supporting 

Contractor’s Day for their support, and we look 

forward to welcoming visitors to Twickenham 

Stadium for what will be a real celebration of all 

things roofing and cladding.” 

www.contractorsday.co.uk 

BENEFITS OF ACCREDITATION ARE A ‘CERT’ 

many more unskilled and inexperienced people 

that can simply set themselves up in business, 

ruining everyone else’s reputation in the process. 

The NFRC concludes that accreditation will solve 

this reputational issue and more. The association 

says that not only will it certify to the wider world 

that a contractor has the competency to carry out 

work, but the path towards formal accreditation will 

naturally improve skills and provide a clearer career 

path, ultimately helping to professionalise roofing. 

(Public Trust is an issue for roofers p.12) 


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Industry News 

TRIPLE AWARD WIN! 

Staff at SIG Design & Technology are 

celebrating after scooping a hat-trick of 

awards at the Single Ply Roofing Association 

(SPRA) Awards Dinner on June 20th. 

SIG won the category of Best Refurbishment 

for its work on an ‘exceptional and unique 

heritage project requiring outstanding 

workmanship’; refurbishing the Ogee Dome at 

an iconic Bristol landmark, the former 

General Hospital. 

Meanwhile, SIG’s expertise at the Lymington 

Shores residential development in Hampshire, 

earned two more awards – a win for Best 

Safe Working, and a highly commended in the 

Best New Construction category. 

Mike Crook, Trading Director at SIG Design & 

Technology, commented: “We’re delighted to 

carry off a hat-trick of awards at the 2018 

SPRA Conference Awards Dinner. We’re also 

thrilled to share in this success with our 

DATAC accredited contractors; Roofworx and 

Flat Roofing Membranes, who worked with us 

on The General Hospital, Bristol and 

Lymington Shores respectively. We work 

closely in formal partnerships with our 

accredited contractors to help them win 

business and to ensure flat roofing 

installations are completed to the highest 

quality in accordance with technical 

standards.” 

Above, top: Lymington Shores; Above: The General 

10,500 ROOF TILES USED FOR SCULPTURE 

Condron Concrete Works, a leading supplier of 

building materials based in Tullamore, Co. 

Offaly, was recently chosen to supply 10,500 

roof tiles for a sculpture in the Serpentine 

Gallery, Kensington Gardens. 

“As a company, we pride ourselves on being 

innovative and moving with the times, but we 

knew when we won the contract that this was 

going to be something special,” explained John 

Condron, CEO at Condron Concrete Works. 

“The line between art and functionality is 

becoming increasingly blurred and especially 

when you look at roof tiles which are largely 

utilitarian. It’s not often you see this type of 

product being incorporated into a sculpture of this 

magnitude but there’s a big feel-good factor 

associated with that,” continued Condron. 

Frida Escobedo, the Mexican Architect who 

designed the Sculpture, requested 10,500 rooftiles 

with four holes to be embedded in each 

piece. The finished Pavilion, composed of a lattice 

of concrete roof tiles is designed to diffuse the 

view out into Hyde park and produce a vibrant 

mix of greens and blues from within. 

CUPA GROUP (CUPA) has acquired the 

remaining share capital in Burton Roofing 

Merchants Ltd, one of the largest independent 

distributors of roofing materials in the UK, from 

the Estate of Peter Burton, meaning it now owns 

100% of the company. 

CUPA first invested in Burton Roofing in 2008 and 

since then the company has grown significantly. 

Burton Roofing’s recent acquisition of Brian Gow 

Roofing Warehouse, a distributor specialising in 

roofing materials, will further consolidate its 

position in the UK market, adding three new 

distribution warehouses in South East England 

and will reportedly bring a combined total 

turnover of approximately 60 million pounds. 

Condron Concrete Works supplied 10,500 roof tiles for a 

sculpture in the Serpentine Gallery, Kensington Gardens. 

“The Serpentine Sculpture certainly raised a few 

eyebrows among the design team because it 

meant producing a roof tile with four specific 

holes placed in them”, explained John O’Rourke, 

project manager at Condron Concrete Works. 

“We are tremendously proud to be involved with 

the Serpentine Sculpture because it’s exciting, 

it’s different and it gives people the opportunity to 

see our products being displayed in a whole new 

light. No pun intended, this really does cement 

relationships for everyone doing business in the 

UK and this is a big win for Condron Concrete 

Works”, concluded John Condron. 

Read more on this project at: 

www.total-contractor.co.uk 

BURTON ROOFING ACQUIRED BY CUPA 

The CEO of CUPA GROUP, Javier Fernández, 

said: "With the addition of Brian Gow, Burton 

Roofing will significantly expand its local 

presence in South East England, consolidating 

its position as one of the UK’s largest 

independent specialist distributors of roofing 

materials. Led by Paul Hattee, the company will 

operate 13 distribution centres across the UK, 

making it an attractive partner for the 

construction industry. 

“Our continued investment in Burton Roofing, also 

demonstrates CUPA’s confidence in the long-term 

prospects of the UK’s roofing materials market 

and CUPA’s firm commitment to 

internationalisation and growth.” 


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Industry News 

ADVICE IS AVAILABLE 

FOR RE-ROOFING 

As standards in roofing continue to evolve 

every day, Russell Roof Tiles is advising 

contractors and developers to get the best 

advice possible before starting re-roofing 

projects. 

Mark Parsons, Technical Director at Russell 

Roof Tiles, said: “Weather patterns, 

legislation and energy efficient requirements 

are changing and evolving all the time, and 

as roof tile manufacturers it is our role to 

stay ahead of these changes and advise our 

customers on the best course of action for 

re-roofing projects.” 

One of Russell’s most recent re-roofing 

projects saw the team work closely with 

Ashfield District Council to supply its 

Highland roof tiles in cottage red as part of a 

£30m five-year housing scheme. Russells 

was able to provide the necessary advice to 

ensure that all legislation was met and the 

tiles and accessories ensured consistency 

and longevity for the tenant, whilst 

minimising future life time costs of the roof 

once installed. 

Mark added: “While the Ashfield District 

Council project was a great success, not 

everyone is aware that they also have access 

to this type of advice. It is important to know 

that anything from the weight of the tile to 

choosing the right sustainable accessories 

need to be taken into consideration before 

modifying any roof structure. 

“We always recommend speaking to a roofing 

expert as they will be able to advise on any 

regulations that need to be adhered to. By 

doing so, this will see less problems further 

down the line and as legislation continues to 

evolve, this will become more important than 

ever for re-roofing projects.” 

MAC AWARDS SHINE A LIGHT ON SECTOR 

The mastic asphalt industry’s most impressive 

projects and professionals were recognised at 

the Mastic Asphalt Council’s (MAC) 2018 Awards 

hosted at London’s Royal Horseguards Hotel. 

Over 140 key players from the sector attended the 

event which is sponsored by Alltype Specialist 

Roofing Supplies, Academy Consulting and Sky 

Gardens. The awards present the ideal 

opportunity for the Mastic Asphalt Council to 

honour top projects and professionals across the 

mastic asphalt industry. 

The winner of the John Blowers Award for 2018 

was Mick Elliott of IKO PLC. Mick started his 

career as a Laboratory Technician and has played 

a valuable role in the development and 

production of polymer modified mastic asphalt. 

He became a member of IKO Technical Services in 

2000 and is well known throughout the industry 

for promoting the qualities and benefits of mastic 

asphalt, and for offering excellent advice and 

service to contractors, specifiers and clients. 

The Challenge Trophy Award was made to BCC 

Asphalt for the Church of St. Mary and All Saints 

project. This award recognises the most 

impressive project across the year carried out in 

the most challenging conditions. The application 

of mastic asphalt was carried out at a 

problematic working height in very difficult 

The Wales National Roof Training Group has 

launched a new Heritage Roofing Skills course 

which will see successful participants achieve 

an NVQ Diploma Level 3 in Roof Slating and 

Tiling, awarded by NOCN. 

The 30-day course is delivered by UK Roofing 

Awards winners and heritage roofing experts 

Andy Rowlands and Richard Jordan, and 

develops skills and experience working with 

heritage roofing materials including clay tiling, 

natural random-sized slating, and stone slating 

The John Blowers Award, which commemorates MAC’s longserving 

director and secretary John Blowers went to Mick Elliott. 

weather conditions. The building was kept 

watertight as works progressed and different 

contours and curves of gutters were expertly 

matched using mastic asphalt. 

The final award of the event was the highly 

sought after Project of the Year Award which was 

awarded to Sussex Asphalte for the St Paul’s 

Cathedral project in London. Mastic asphalt was 

first laid in 1906 on the Stone Gallery that circles 

the Cathedral dome and it provided a remarkable 

111 years’ weatherproof protection before it 

required refurbishment last year. Sussex Asphalte 

secured the contract to replace the asphalt 

around the Cathedral dome and completed the 

refurbishment of this historic building with 

excellent attention to detail and workmanship 

throughout, with neat upstands, arrises and 

splays. Scaffolding and hoists were used to 

overcome restricted working conditions and a 

gutter template was expertly formed to ensure the 

correct width of application. 

HONE YOUR HERITAGE ROOFING SKILLS 

including historic valley details. 

Funding is also available for companies registered 

with CITB and candidates will be expected to 

attend a 30-day programme over a 12 month 

period in various locations throughout the UK. 

If you or a member of your team is interested in 

taking part in the course, please contact Lesley 

Hughes (AIoR) at Lesley.hughes@wnrtg.co.uk or 

tel: 07817 641984. 


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Industry News 

NFRC RESPONDS AS SURVEY RATES ROOFERS LOW IN TRUST TABLE 

The National Federation of Roofing Contractors 

(NFRC) is urging homeowners to employ 

affiliated roofers after research found the sector 

was plagued by fear of rogue traders. 

The NFRC spoke out after a Which? survey of 

householders found only half thought roofers were 

trustworthy. 

Poor workmanship and “being taken for a ride” 

were labelled top concerns with 46% worried they 

would get “ripped off”. 

Plumbers, carpenters and electricians were 

considered the most trustworthy with builders 

joining roofers at the bottom of the table. 

James Talman, CEO from the NFRC, said: “Roofers 

without the correct qualifications, proficiencies 

and dedication to quality and care do a disservice 

to the many true professionals within our industry. 

Finding roofers who have the necessary skills and 

expertise to carry out work safely and according to 

best practice has long been an issue in our industry 

and one we have been working hard to resolve.” 

In November 2017, NFRC launched an industrywide 

accreditation to protect and support the 

growth of the sector now and in the future. 

This accreditation is the result of collaboration 

between the NFRC and the Construction Industry 

Training Board (CITB) and aims to improve 

efficiency, upskill the workforce and encourage 

the use of new technology. 

NFRC also runs the Competent Roofer scheme, a 

government-authorised scheme which allows 

roofers to self-certify roof refurbishment work as 

compliant with Building Regulations in England 

and Wales. 

The NFRC is urging homeowners to use affiliated roofers. 

James continued: “Our advice to anyone searching 

for a roofer would be to avoid relying on review 

sites and don’t get sucked into saving the pennies 

with an unaffiliated individual. 

“Instead search for roofers linked to trade 

federations like ours. Our members are subject to 

rigorous checks of their work, technical 

competency, skills and training. 

“Through this membership requirement they can 

clearly demonstrate their experience and technical 

knowledge to carry out the work, and they come 

with a seal of approval which is much greater 

than an anonymous review online.” 

GRASS ROOT GAINS THANKS TO DANOSA 

BBA FOR SIGNATURE 

DANOSA recently presented Ratton Rangers, 

an under 9’s grass roots football team, with 

a brand new kit for their recent tour to 

Spain to take part in the annual Barcelona 

Football Festival. DANOSA were keen to get 

involved by supporting the team, believing 

strongly in lending local causes the support 

they need. 

Steve Downey, DANOSA’s Commercial Director, 

said “Ratton Rangers held a winter tournament to 

raise funds for their planned summer trip to 

Spain to compete in the Barcelona Football 

Festival, but were short of funds to provide a new 

kit for the trip. We’re thrilled that we’ve been able 

to contribute to the success of the team and were 

delighted to hear of their success in Spain, 

competing against teams throughout Europe – 

even more remarkable given the boys played an 

age group up and finished as quarter finalists 

before bowing out of the competition. We’d also 

like to wish them the best of luck throughout the 

summer at the various tournaments they have 

Ratton Rangers were presented with a brand new kit from 

the team at DANOSA. The kit was given its first outing at the 

annual Barcelona Football Festival where the youngsters 

reached the quarter finals despite playing in an age group 

above them. 

planned up and down the country. Now, I’m 

probably biased, but I think the kit looks 

fantastic!” 

Ratton’s team manager, added: “Since receiving 

the sponsorship from DANOSA there’s been a 

renewed interest in the boys and their eyecatching 

new kit has certainly given the boys a 

morale boost. We were delighted to be able to 

enter the tournament season with such great 

support, and we can’t thank DANOSA enough for 

their generosity.” 

SIG’s SIGnature 25 roof waterproofing 

system has been awarded the BBA (British 

Board of Agrément) certification. 

The quality accreditation is for SIG’s 

own range of Torch-On roofing 

bituminous membranes. These comprise 

polymer-modified bitumen 

waterproofing membranes, insulation 

boards and a vapour control layer (VCL) 

for use on flat and pitched roofs with 

limited access. 

Suitable for warm or cold roofs, the 

SIGnature Torch-On range is available in 

three underlay options, with the potential 

for either 20 or 25 year warranties. 

SIGnature 25 was used at Layfield School. 


Delivering training excellence 

to the roofing industry 

20% discount 

on training 

courses 

in July and 

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National Construction Training Services is 

committed to providing an outstanding level 

of training across all roofing disciplines. 

Contact us to see the courses that 

are running for the rest of 2018 

We train all roofing disciplines, Slating, Tiling, 

Lead, Hard Metals, Liquid and Bituminous 

Waterproofing. 

Working with roofing federations, training 

groups, manufacturers and employers from 

across the industry , we can offer a variety 

of training courses designed to fit with your 

needs, no matter your level of skill. 

Book your place now! 

l Lead welding and bossing courses 

l Slate & Tiling training on our 

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l Hard Metal courses for Zinc Copper 

Aluminium and Stainless Steel 

l NVQ Level 2 apprenticeships for Slate & 

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l Next NVQ intake is September 2018 

For more information on apprenticeship training contact: 

training@ncts.org.uk 

National Construction Training Services 

www.ncts.org g.uk 

@NCTS_2017 

01480 501011 

NCTS 

*This offer applies only to weeks commencing 23r 

eeks commencing 23rd July 

until week commencing 3rd September 2018. 


Contract Talk 

HMRC AND YOU: IT DOESN’T 

ALWAYS NEED TO BE TAXING 

In our latest instalment of Contract Talk, Janine Brady, Marketing Manager at SIG Roofing, 

offers some initial points to consider when it comes to tax and VAT for those considering 

being a sole trader. 

So, you’ve chosen roofing as your career 

and decided to be your own boss. You’ve 

got the business plan, the skills, the tools, 

and the customer connections – but it’s not just 

the relationship with your customers you have to 

consider. There’s also your responsibilities to Her 

Majesty’s Revenue & Customs. 

So many questions; just how much tax will I have 

to pay? When and how will I have to pay it? Can I 

claim expenses? What about VAT? To be fair, it is 

a little complicated, however, put some time 

aside to look into it and all will become clear. 

It might seem obvious but the best place to go for 

information is the HMRC itself, or rather its 

website, which you can access via www.gov.uk. 

As well as providing the detail on tax and VAT in 

bite-sized pieces, HMRC also offers helpful, 

interactive web-based video conferences that are 

free to access. You can join them ‘live’, even post 

a question, or log onto YouTube for video-based 

tips. There’s also a telephone helpline should the 

online support not be your cup of tea. 

But before we talk about tax, here’s one piece of 

advice – find yourself a reliable accountant or tax 

adviser. Ask trusted colleagues who they use, or 

speak to family and friends and find out who they 

would recommend. 

As well as sorting out your annual tax return, a 

good accountant will be happy to answer any 

additional questions you might have. For all the 

hassle it takes away it’s worthwhile and relatively 

inexpensive. 

Let’s talk tax 

As a sole trader, you will need to fill in a Self- 

Assessment form every year, either a paper one 

or online – watch out for the differing deadlines, 

however if you have an accountant they can help 

you with this. 

The Income Tax band you fall in and therefore the 

amount of tax you pay will depend on your profit, 

not your total income. HMRC will calculate what 

you owe based on the figures you supply in the 

Self-Assessment form. 

“The Income Tax band 

you fall in and 

therefore the amount 

of tax you pay will 

depend on your profit, 

not your total income” 

The good news is you can set some of your 

outgoings against your income to bring down your 

taxable profit. This includes such things as the 

use of your home as an office, internet and 

mobile phone costs. 

If, for example, your turnover is £40,000 and your 

expenses are £10,000, you only pay tax on £30,000. 

It’s also important to keep separate business 

and private bank accounts. Don’t be tempted to 

‘borrow’ from one to pay the other, because 

when it comes to paying your tax bill you might 

find the money’s not there. Many banks offer 12 

months or more free business banking to help 

you get started. 

Don’t forget; as a sole trader you usually also pay 

two types of National Insurance (NI) – Class 2 

and 4 – which qualify you for benefits including 

the State Pension. Class 2 is a set weekly rate – 

currently £2.95, while Class 4 is a sliding scale 

linked to profit. Most sole traders pay NI through 

Self-Assessment along with their Income Tax. 

VAT’s all folks 

Finally, VAT. To register and pay it, or not? If your 

annual turnover is £85,000 or over you will have 

to register regardless – but if less than that it’s 

your choice. 

The main benefit of being VAT registered is that 

some people and businesses consider you to be 

more professional. Having that VAT number on 

your invoices gives the impression that your 

business is more established, something that 

customers like to see. 

The standard VAT rate is, of course, 20% and you 

will always charge customers this amount. 

However, when it comes to you paying VAT to the 

HMRC, they offer you the choice of doing so under 

something called the Flat Rate scheme – which is 

a ‘simplified’ way of calculating your VAT. 

As a roofer, the Flat Rate you would pay can vary 

considerably depending on whether you are 

supplying labour-only or labour and materials, so 

it’s important to check. 

A downside of being VAT registered is filling in a 

quarterly VAT return, however it’s not that difficult 

or time-consuming and HMRC will send you a 

reminder one month in advance. 

There are other ways to set yourself up in 

business – such as a limited company and we’ll 

look at that in a future issue. 

Contact SIG Roofing 

0845 612 4304 

www.sigroofing.co.uk 

@SIGRoofing 


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An Inspector Calls 

DON’T LET BLISTERS BE THE 

ACHILLES’ HEEL OF YOUR PROJECT 

In ‘An Inspector Calls’, our regular monthly column, Total Contractor has teamed up with the 

experts at Icopal to help you achieve roofing success and avoid the common pitfalls that can 

often cost you both time and money. 

This month the Inspector bursts a few 

myths about blistering. 

It won’t come as a great surprise that there are 

many reasons why a waterproofing membrane 

may blister. However, what is surprising is that 

most contractors and building owners 

automatically assume it to be a product failure or 

an inherent defect in the product itself. Sadly that 

is rarely the case; blisters are most commonly a 

consequence of poor or incorrect application, and 

in the majority of instances, of insufficient 

preparation by the installing contractor. 

Let’s have a look at why blistering occurs and 

what steps can be taken to prevent it from 

happening in the first place. A few simple do's 

and don’ts are all it takes to significantly reduce 

this often-misunderstood ‘phenomenon’ in the 

industry. 

Presence of moisture or excessive heat 

Most blisters are the result of the presence of 

moisture and / or excessive heat at the point of 

membrane application. If the moisture gets 

trapped underneath the membrane, it is highly 

likely that this will be the birthplace of your 

blister(s). If the surface retains any moisture, the 

bitumen or adhesive used to bond the membrane, 

will not make contact with the underlying 

substrate, leaving a tiny pocket of surface area 

that could encourage blistering. 

Throughout the seasonal changes and prolonged 

exposure to UV, this pocket of moisture will 

expand and contract until it reaches a size many 

would find unsightly, and may well spoil an 

Above: Blisters on a flat roof installation. 

otherwise fantastic looking roof with a number of 

blemishes and imperfections. If this occurs in a 

number of locations, the client may be left with a 

roof which resembles a rocky road instead or 

even a patchwork quilt following the likely repair 

needed. 

Restricted movement 

Another well-documented reason for blistering is 

down to the specification of multiple fully-bonded 

layers. These layers restrict the movement of 

trapped moisture and if a number of 

them are applied on top of each 

other, blisters are likely to 

form between each and 

every fully-bonded layer, 

particularly if moisture or 

gas is trapped between them. 

The solution is to install a 

partially-bonded layer, such as our 

“Whilst most blisters 

are widely considered 

aesthetic issues only, 

those that are in close 

proximity to membrane 

side and head laps will 

be of concern” 

Total Torch Vapour Dispersion Layer, which 

prevents this from happening as it allows trapped 

moisture to navigate freely between the 

membrane stripes, preventing moisture build-up 

in isolated locations. 

Blister position 

Whilst most blisters are widely considered 

aesthetic issues only, those that are in close 

proximity to membrane side and head laps will 

be of concern. The pressure from those 

blisters can breach the lap creating 

a potential point of entry for 

water ingress, which could 

become an immediate 

headache for the contractor 

and client. 

Preparation 

You may recall from May’s article 

on deck preparation that getting 

“Some moisture will not be visible to the naked 

eye so extreme care should be taken as the 

responsibility of providing a suitable substrate 

lies solely with the installing contractor” 


“If the moisture gets 

trapped underneath 

the membrane, it is 

highly likely that this 

will be the birthplace of 

your blister(s)” 

everything prepared is arguably the biggest 

influence on success. This is also the critical 

stage if we are to make blisters a 'thing of the 

past' too. To prevent blistering we advise that all 

decks are fully dried before the membrane is 

applied, and care is taken when a contractor 

tries to dry a roof unnaturally with a gas torch. 

Some moisture will not be visible to the naked eye 

so extreme care should be taken as the 

responsibility of providing a suitable substrate lies 

solely with the installing contractor. 

Best practice also dictates that the substrate 

receiving the membrane is primed with the 

How to ensure your roof project doesn’t blister: 

Do: 

•Clean and prime the roof, ensuring the 

prepared surface is fully dry and free 

from contaminants. 

•Use partially bonded layers where 

appropriate. 

•Use roll-bars to distribute even weight 

and apply pressure across the 

membrane on application. 

•Consult the manufacturer for advice. 

appropriate primer. 

As mentioned in May’s article, primers are 

developed by manufacturers to provide the 

strongest bond possible for their products and to 

prepare new and existing surfaces for the 

membrane. 

These primers will therefore give you the best 

Don’t: 

•Apply products on wet or damp 

surfaces. 

•Use multiple layers of fully-bonded 

membranes. 

•Rely solely on gas torches to dry the 

roof (also heed advice on combustible 

substrates here!) 

•Ignore free technical advice. 

opportunity for success and help reduce latent 

defects (such as blisters) from occurring in the 

future. 

Contact Icopal’s Technical Team 

0161 865 4444 

www.icopal.co.uk 

@Icopal_UK 

For further inf 

formation 

or a hire quotation call 

01858 410372 


NFRC Tech Talk 

ASBESTOS: MAKE SURE YOU KNOW 

ALL THE FACTS BEFORE YOU START 

By Gary Walpole, NFRC Technical Officer. 

The Health and Safety Executive (HSE) says 

that any building constructed or refurbished 

before 2000 may contain asbestos, which 

means that roofing contractors carrying out 

refurbishments are likely to come into contact 

with asbestos at some point. And that poses a 

real health hazard. 

The Institution of Occupational Safety and Health 

(IOSH) says that 5,000 workers a year die from 

lung cancer caused by asbestos. Other asbestosrelated 

diseases, which can take up to 40 years to 

fully develop, include asbestosis, mesothelioma 

and pleural plaques. 

Early warning signs can include a persistent 

cough, breathlessness, an ache in the chest or 

shoulder or coughing up phlegm with traces of 

blood. 

Asbestos can be found in pretty much all areas of 

a building, including bitumen felts, mastics, 

sealants, putties and adhesives, floor tiles and 

gaskets, spray coatings and lagging. Asbestos can 

also be present in insulating boards, yarns, 

millboard and papers, fibre cement and textured 

coatings and paints. 

Yet despite being on the front line, a recent survey 

of 500 construction workers carried out by IOSH 

found that a third had never checked the asbestos 

register before starting work, and one in five said 

they would not know what to do if they 

encountered asbestos. This is why IOSH has 

Above: The NFRC is supporting the IOSH asbestos 

awareness campaign. 

launched an asbestos awareness campaign as 

part of its wider No Time to Lose campaign, to 

explain the causes of occupational cancer and 

help businesses take action. 

You can find the details of the campaign, which 

the NFRC is supporting, below. 

So, what should you do if you encounter asbestos on a project? 

1. Before carrying out work 

Always make sure that your employer has 

an asbestos management plan detailing 

how asbestos will be managed if found. 

This plan should include an asbestos risk 

register that has the latest information 

about the presence and condition of 

asbestos in the building. 

You should also be given training on how 

to work safely around materials 

containing asbestos but should never be 

asked to work in an area that might 

disturb the asbestos. 

2. What to do if you think you’ve 

disturbed asbestos 

Asbestos removal and the cleaning up of 

dust should only ever be carried out by 

specialist contractors. 

1. Stop work immediately. 

2. Evacuate everyone from the area and 

prevent others from entering. 

3. Do not remove equipment or materials. 

4. Close, seal or lock off the area. 

5. Put up warning signs. 

6. Report it to your employer. 

To find out more, visit www.notimetolose.org.uk and 

www.hse.gov.uk/asbestos/managing/ The HSE has 

also developed an app called beware-asbestos.info 

offering practical advice to contractors. 

Contact the NFRC 

020 7638 7663 

www.nfrc.co.uk 

@TheNFRC 


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PITCHED ROOFING 

FLAT FLAT FLAT ROOFING 

INDUSTRIAL ROOFING

Perfectly Pitched 

UNINTENDED CONSEQUENCES OF 

ROOF GUIDANCE PROGRESSION 

In a new, regular column from John Mercer (pic) – writing on behalf of Imerys Roof Tiles – 

the pitched roofing expert and consultant looks at some of the unintended consequences of 

improving roof design and installation practices. 

Pitched roof slating and tiling practices have 

improved immeasurably in recent years. 

However, with each improvement there 

can sometimes be an unintended or unforeseen 

consequence. In this article, I will highlight some 

of these and – keeping with my policy of never 

writing a negative piece – I will endeavour to 

suggest ways to avoid some of these 

consequences. 

Modern lightweight ‘breathable’ underlays 

One of the biggest changes to UK pitch roofing 

has been the introduction of air and vapour 

permeable underlays, commonly referred to as 

breathable underlays, though it must be said, 

there are many differences between these 

products. These have been essential in enabling 

roof designs to control excess water vapour that 

can otherwise build up in roof structures due to 

ever increasing insulation requirements. 

However, it has not been straightforward in 

changing from the traditional bituminous 

underlays to the modern lightweight breathable 

underlays. Apart from confusion over design and 

the relationships between ceiling construction, 

traditional roof ventilation and breathable 

underlays, installation problems associated with 

these underlays have led to a big increase in 

complaints of leaking roofs. Remember, the 

underlay must be installed as a waterproof layer 

as required in BS 5534. 

In traditional ‘English’ cold roof 

construction, the underlay is laid 

directly over the rafters. This 

was fine for traditional 

bituminous underlays as they are 

heavy and will sag or drape naturally 

between the rafters. The underlay drape is 

important because it creates a gap between the 

underlay and tile battens to allow any water that 

gets into the batten cavity to drain away safely to 

the gutters. Another feature of bituminous 

underlay is its ability to ‘self-seal’ around nail 

penetrations and to compress where the tile 

battens are fixed through it into the rafters. 

Bituminous underlays are therefore watertight 

due to the drape and the sealed nail holes. 

It can be more difficult to install breathable 

underlays with a drape between rafters; for 

example, even in a slight breeze the roofers need 

to hold the underlay down tight whilst battens are 

fixed to restrain it. This can result in the underlay 

being installed with no drape whatsoever. Any 

water entering the batten cavity will then become 

trapped behind the battens. Because breathable 

underlay does not compress around the tile 

battens or self-seal around nail holes, this water 

can find its way through the nail penetrations and 

into the roof structure. 

Of course, there are many roofs installed using 

breathable underlays without problems, but if it is 

“If it is difficult to lay the underlay with a drape, 

then one option is to install counterbattens over 

the underlay, fixed into the rafters” 

difficult to lay the underlay with a 

drape, then one option is to 

install counterbattens over the 

underlay, fixed into the rafters. 

These only need to be deep 

enough to allow water to pass 

underneath and, to ensure a watertight seal 

around nail penetrations, nail tape can be 

installed under the counterbattens. 

“Roofers should plan 

their work to eliminate, 

or at least minimise, 

access over laid tiles” 

All tiles fixed 

The requirement introduced in the 2014 version 

of BS 5534 to mechanically fix all tiles means 

that roofers are no longer able to lay some tiles 

unfixed and then push them up so they can walk 

on the battens. Roof tiles and slates are not 

designed to be walked on without adequate 

protection and it is not particularly safe either. So, 

it’s a great step in ensuring roofs tiles are 

properly fixed to resist wind loads, but it comes 

with consequences for the way in which roofs are 

installed. 

Unfortunately, it is not practical for 

manufacturers to design roof tiles that can truly 

be walked on. For one thing, the tiles would be too 

heavy for the roof and no doubt be far too expensive 

and, in any case, for safety reasons, roofers should 

not walk on tiles and slates without there being 

some form of access system to both protect the 

tiles or slates and to prevent slips and falls. 


NO STREAKING. NO LUMPY BITS. 

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Our new Rapid DryVerge looks great and is even quicker to install. The sleek design 

gives a more streamlined roof and it meets the requirements of the new BS 8612, 

with greater wind resistance, and unique drainage channels to help prevent nasty 

streak marks on gable ends. Of course, what you get up to in your own time’s entirely 

up to you, but we’ve never liked streaking on walls. 

Find out more at Redland.co.uk 

Part of BMI GROUP

Perfectly Pitched 

It therefore falls to us collectively, as an industry, 

to develop better ways of working on the roof. 

Roofers should plan their work to eliminate, or at 

least minimise, access over laid tiles and use 

crawling boards and roof ladders where 

necessary. Architects could consider the 

limitations in working practices of roofing 

contractors when they are designing the roof 

shape; for example, it is difficult – if not 

impossible – to install a hip system without 

standing on laid roof tiles and it is not possible to 

use roof ladders at a hip. Of course we don’t want 

to end up with uninteresting roofs so perhaps 

access could be designed into the roof; for 

example, walkways and steps to be used not only 

by the installation roofers but also for future 

maintenance access. 

Stronger mortar mixes 

The recommended mortar mixes in BS 5534 for 

use with ridge and hip tiles have long been of 

sufficient strength to resist wind uplift. However, I 

think it is safe to say that, in practice, many sites 

simply used bricklayer’s mortar which is 

Below: Imerys Double Panne S in Red. 

“It could be argued that 

the need for strong 

mortar mixes has 

already been 

superseded by the BS 

5534 requirement to 

mechanically fix all 

ridge and hip tiles” 

considerably weaker, as it is required for masonry 

construction. The greater awareness of the latest 

revisions to BS 5534, due to great industry PR, 

has led to contractors now routinely using the 

correct mortar mixes. But now roof tile 

manufacturers have seen an increase in 

complaints of ridge and hip tiles ‘cracking’ in 

some way. Generally this is not due to any defect 

in the ridge or hip tiles, but to very slight 

movement or settlement of the building structure. 

Remember that buildings will always be subject 

to drying and temperature movement and mortar 

is not a flexible material that can accommodate 

any such movement. Consequently, the stronger 

mortar ridge and hip bedding damages the ridge 

and hip tiles rather than simply becoming 

detached from the tiles, as it had done in the 

past. In fact, it could be argued that the need for 

strong mortar mixes has already been superseded 

by the BS 5534 requirement to mechanically fix 

all ridge and hip tiles; a measure introduced to 

ensure ridge and hip tiles stay securely fixed even 

when the mortar bond breaks down due to 

structural movement. 

Of course, the use of dry ridge and hip systems 

has increased rapidly since the introduction of the 

BS 5534 requirement to mechanically fix all ridge 

and hips. As well as all the advantages that dry 

fix brings, it also accommodates any slight 

structural movements and thus eliminates this 

risk of damage to the ridge and hip tiles. 

These are just a few examples of how 

improvements to installation Standards or 

products create new challenges and so cause us 

to rethink roof design. 

Contact Imerys Roof Tiles 

www.imerys-roof-tiles.com 

@imerys 

@johnmercer3 


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Specialist support from 

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Bespoke flashings and 

fabrications for design flexibility 

Kingspan’s own complete range 

of structural steel products 

Kingspan Insulated Panels RW Roof system is a factory-engineered single 

component system for very fast installation. 

The system comprises a complete range of structural steel products, high performance panels, 

insulated gutters, superior polycarbonate daylighting, height-safety systems and a bespoke 

range of corners and flashings. As a manufacturer of the complete roof system including all 

components, we’re with you all the way with services to help save time and maximise project 

value and performance. 

The system can be protected by the Kingspan Warranty. 

Kingspan Insulated Panels 

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Tel: +44 (0) 1352 716100 www.kingspanpanels.co.uk

QUICK, 

COST EFFECTIVE 

ROOF REPORTS 

A CLEARER 

VISION FOR 

YOUR BUSINESS 

When tendering for roofing contracts, accurate 

aerial measurement can be the difference between 

profit and loss. With EagleView, you can have 

complete confidence in the measurements you base 

your tender on. 

By combining multi-angle aerial images with 

advanced analytics, our reports provide precise area, 

pitch and length measurements. Colour coding 

distinguishes every detail, from ridges, hips and 

valleys to verges, eaves and flashings. 

Premium Report 

06/09/2017 

123 Main St., Tadworth, A1B2 C3D Report: 12345678 

TABLE OF CONTENTS 

Fast report turnaround saves you time. High 

resolution aerial views and 3D diagrams make your 

bid stand out. And accurate material ordering helps 

protect your profit. 

To see more, visit eagleview.co.uk 

or call 0800-069-8405 

Images .....................................................................1 

Length Diagram .........................................................4 

Pitch Diagram ............................................................5 

Area Diagram ............................................................6 

Notes Diagram...........................................................7 

Penetrations Diagram.................................................8 

Report Summary........................................................9 

MEASUREMENTS 

SEE US AT 

Total Roo f Area = 467.95 sq m 

Total Roof Facets =24 

Predominant Pitch = 45° 

Numb er of Storeys > 1 

Total Ridges/Hips = 84.43m 

Total Valleys 

= 17.07m 

Tota l Verges = 14.63m 

=111.86 m

M25 

M25 

Measurements provided by www.eagleview.com 

www.eagleview.com/Guarantee.aspx 

© 2008-2017 Eagle View Technologies, Inc. and Pictometry International Corp. – All Rights Reserved – Covered by one or more of U.S. Patent Nos. 8,078,436; 8,145,578; 8,170,840; 8,209,152; 8,515,125; 8,825,454; 9,135,737; 8,670,961; 

9,514,568; 8,818,770; 8,542,880; 9,244,589; 9,329,749. Other Patents Pending. 


06/09/2017 

Report: 


Images .....................................................................1 


Pitch Diagram ............................................................5 

Area Diagram ............................................................6 

Notes Diagram...........................................................7 



MEASUREMENTS 

Total Roof Area =467.95 sq m 


Predominant Pitch =45° 

Number of Storeys >1 

Total Ridges/Hips =84.43 m 

Total Valleys =17.07 m 

Total Verges =14.63 m 

Total Eaves =111.86 m 

In this 3D model, facets appear as semi-transparent to reveal overhangs. 

Total Penetrations =14 

Total Penetrations Perimeter = 34.75 m 

Total Penetrations Area = 9.48 sq m 

321 King St. 

London, A1 B2C 

555-555-5555 

Measurements provided bywww.eagleview.com 

www.eagleview.com/Guarantee.aspx 

Technologies, Inc. and Pictometry International Corp. – All Rights Reserved – Covered by one or more of 

U.S. Patent Nos. 8,078,436; 8,145,578; 8,170,840; 8,209,152; 8,515,125; 8,825,454; 9,135,737; 8,670,961; 

9,514,568; 8,818,770; 8,542,880; 9,244,589; 9,329,749. Other Patents Pending. 

EAGLEVIEW IN FOCUS 

The hi-res imagery that’s 

re-engineering roofing 

By Kay Rose FIoR National Sales Director, EagleView. 

If you’re a roofing professional, imagine 

how much easier your job would be if 

you had a full overview of the roof even 

before visiting the site. 

Imagine if – with just a few clicks of 

your mouse – you could order a full roof 

measurement report that includes high-resolution 

images and precise dimensions 

of all the areas. Imagine being able to 

order materials without the worry of 

over- or under-ordering – no need to do 

a “guesstimate and 

add some” to cover 

yourself. 

EagleView ® makes 

all of this a reality. 

Established in the 

US in 2008 and 

launched in the UK 

in November 2017, 

the world’s first-ever 

remote aerial roof 

LONDON 

measurement service 

COVERAGE 

MAP 

creates 3D models that 

deliver highly accurate 

and detailed roof 

measurements. 

Proven 

technology 

PREMIUM ROOF REPORT PREPARATION 

HIGH RESOLUTION 

At its core lies the 

patented Pictometry ® 

technology which 

produces high-resolution 

imagery 

showing the fronts and sides of 

buildings. Pictometry imagery 

provides oblique perspectives 

from 40 to 45-degree angles as 

well as an overhead view. 

These images are then stored 

and, when an EagleView 

roofing report is requested, 

advanced algorithms and data 

analytics are used to translate 

them into a highly accurate 

model of the property in 

question. These models then 

enable detailed structural 

measurements to be derived – 

including eaves, flashing, hips, 

verges, ridges and valleys. The reports are 

produced quickly – in a matter of hours – 

and available in a variety of file formats. 

TOTAL LINE LENGTHS 

Ridges 30.48 m 

Hips 53.95 m 

Valleys 17.07 m 

Verges 14.63 m 

Reducing risk, saving time 

Conducting a manual roof survey involves 

time travelling to and from the site, 

getting safe access to the roof and taking 

measurements, and then further time to create 

precise dimensional drawings. By replacing 

this manual approach with an EagleView 

PremiumReport , that time is freed up for 

managing active contracts and pursuing new 

leads. And, not only does an EagleView 

11.1m 

4.6m 

8.6m 

8.6m 

4.6m 

2.8m 

1.8m 

1.8m 

1.8m 

5.5m 

3.2m 

5.5m 

3.4m 

5.3m 

5.9m 

2.8m 

8.2m 

3.9m 

2.8m 

1.8m 

3.1m 

6.2m 

6.6m 

3.0m 

6.6m 

6.2m 

9.8m 

7.1m 

6.3m 

1.0m 

3.8m 

7.1m 

4.9m 

6.2m 

5.6m 

7.0m 

6.2m 

18.6m 

4.9m 

5.0m 

2.0m 

MATERIALS CALCULATION 

10.1m 

ROOF DIAGRAMS 


06/09/2017 

123 Main St., Tadworth, A1B2 C3D Report: 12345678 

In this 3D model, facets appear as semi-transparent to reveal overhangs. 

PREPARED FOR 

Contact: 

Company: 

Exteriors Company 

Address: 

321 King St. 

London, A1 B2C 

Phone: 555-555-5555 


PremiumReport accelerate workflow, its 

accuracy greatly reduces the risk of costly 

material miscalculations. 

Wider impact 

Images .....................................................................1 


Pitch Diagram ............................................................5 

REPORT PREPARATION IN PROGRESS 

Area Diagram ............................................................6 

Notes Diagram...........................................................7 



TOTAL LINE LENGTHS 

Eaves 111.86 

MEASUREMENTS 

Total Roof Area =467.95 sq m 

Flashing 14.63 m 


Predominant Pitch =45° 

Step flash 26.21 m 

Number of Storeys >1 

Total Ridges/Hips =84.43 m 

Parapets 38.10 m 

Total Valleys =17.07 m 

Total Verges =14.63 m 

Total Eaves =111.86 m 

Total Penetrations =14 

Total Penetrations Perimeter = 34.75 m 

Total Penetrations Area = 9.48 sq m 

In the few years since EagleView was first 

established in the US, it has become the 

industry standard in aerial roof measurements. 

Roofing contractors throughout North 

America have quickly caught on to the 

resource and safety benefits, 

and increased number of 

contracts they win by using 

EagleView PremiumReports. 

Insurance companies and 

adjusters across the US have 

also embraced EagleView 

PremiumReports. In fact, 

following the wildfires that 

ravaged much of California 

during December 2017, 

EagleView captured and 

delivered high-resolution 

aerial images of the 

devastation in San Diego 

County so quickly that its 

insurance carrier partners 

were able to start viewing 

and responding to areas 

of severe need before the 

residents had even returned 

home. 

First in the UK 

The EagleView 

PremiumReport is a ground-breaking 

new offering, and there’s nothing else 

like it in the UK. It’s currently available 

for sites across London (within the 

M25), and Bristol and other major 

cities are following close behind. It’s 

a truly pioneering technology that 

stands to benefit anyone involved in 

the roofing industry. However, as with 

any successful technology, it’s the early 

adopters that will gain a competitive 

advantage. 

To find out more about EagleView 

Premium Reports go to eagleview.co.uk 

or call 0800 069 8405. 

CERTIFIED ACCURATE

Clay Interlocking Tiles 

KEY Q’S: INTERLOCKING INSIGHT 

Tom Woodhouse, Site Services Manager at Marley Eternit, answers some common 

installation queries. 

Labour shortages and cost pressures mean that large format clay interlocking tiles are becoming 

increasingly popular as contractors look for a quicker, more cost-effective way of getting a 

traditional clay look. Below I’ll answer some of the common installation questions our technical 

department receive. 

5 

key installation questions: 

“Due to the corner cuts, 

traditional pantiles 

have no batten gauge 

variance. Therefore a 

random sample of tiles 

needs to be laid out” 

Q: I’m using a breathable membrane with 

clay interlocking tiles. Do I need any other 

ventilation? 

A: Yes, because there is a small amount of air 

openness with interlocking tiles there is a myth 

that you don’t need additional ventilation if you 

are using a breathable underlay. However, this is 

not the case. For the purposes of BS 5250, all 

variables in the roof build-up, including the 

external covering such as standard interlocking 

tiles, must be considered. As such, roofs will 

almost always require supplementary low and 

high level ventilation at the eaves and ridge. 

Q: What size battens do I need to use? 

A: For all of our clay interlocking tiles, we 

recommend the following batten sizes: 

38 x 25mm for rafters / supports not exceeding 

450mm centres. 

50 x 25mm for rafters / supports not exceeding 

600mm centres. 

Q: Using so many clips is taking too much 

time, how can I get round it? 

A: The revised BS 5534 means there will be a 

degree of clipping required on all single lap roofs. 

However, it is possible to knock around 30% of 

roof clipping time by using a combined one piece 

clip and nail, such as SoloFix. The fact you 

haven’t got to have two bags of clips and nails 

open means it is much less fiddly. 

Above: Marley Eternit’s Lincoln Rustic Red. 

Q: Can I use the tiles at a low pitch? 

A: It depends on the type of clay interlocking tile 

you are using. Many have special weatherproofing 

features that allow them to be used at a lower 

pitch than their traditional equivalents but this 

will vary, so you need to check the 

manufacturer’s instructions. 

If you need a clay tile for a low pitch extension, 

then our Melodie interlocking pantile can be used 

down to a very low pitch of just 12.5 degrees. We 

also offer two other low pitch clay interlocking 

tiles, the Lincoln pantile and the Maxima double 

roman tile, which can both be used down to a 

minimum pitch of 17.5 degrees. 

Q: Do I still need to lay out interlocking 

pantiles to determine batten gauge? 

A: No, this is where some of the time saving 

comes from. Due to the corner cuts, traditional 

pantiles have no batten gauge variance. 

Therefore a random sample of tiles needs to be 

laid out on the ground to determine batten gauge 

and that’s why some roofers don’t like using 

traditional pantiles. 

In contrast, our Melodie pantile has a flexible gauge 

and the Lincoln pantile has a fully open gauge. This 

means they can be adjusted on the roof, providing 

flexibility and requiring less precise installation, 

without the need for complicated measuring and 

setting out. The more open the gauge, the easier it 

is to install, so this is something to check when you 

are buying interlocking pantiles. 

Total Contractor readers can submit their own 

questions for the Marley Technical Team, simply 

send your queries to mattdowns@medianow.co.uk 

or tweet @MarleyEternit / 

@TotContractorUK. 

Contact Marley Eternit 

01283 722588 

www.marleyeternit.co.uk 

@MarleyEternit 


PLANUM 

CLAY ROOF TILES MADE FOR EXCELLENCE 

Specially designed for low pitch roofs down to 10º 

Double interlocking flat clay roof tile for perfect waterproofing. 

Large format - just 11 tiles per m2. Quick and easy installation. 

Slate aesthetic and with great curb appeal. 

100 year guarantee 

* Please contact our Technical Dept for for guidance 

T: T: 01277 841555 E: sales@stoneleaftiles.co.uk www.stoneleaftiles.co.uk

Contractor’s Q’s 

“WE NEED AN INCENTIVE TO TRAIN” 

Despite claiming not to have chosen a career in roofing, more than 30 years on Andy Rowlands 

continues to enjoy a successful career in the roofing industry both on site and as a tutor. He 

established Rowlands Roofing in 1992 and is responsible for probably the most recognisable roof 

of 2017, Quintain House (see right), which won both UK and International Awards last year! 

10 

Questions for Andy Rowlands: 

Award-winning roofs by 

Rowlands Roofing; left: 

Quintain House and 

above: Llwyn Celyn. 

TC: What was your path into construction 

and your current position? 

AR: I, like many others in the trade, primarily did 

not choose roofing as a career. I originally left 

school to become an apprentice technician and 

when that did not work out I went to work with a 

friend whose family owned a roofing business 

and I liked the job. I eventually set up Rowlands 

Roofing in 1992, but away from site I deliver Roof 

Slating and Tiling Training and NVQ Assessment 

in Wales; I am also the NFRC board member for 

South Wales and South West, Chair of the 

Institute of Roofing for South Wales – and this is 

just the shortened version of my commitments! 

TC: What’s your one piece of advice for 

starting a roofing business? 

AR: My approach has always been to treat every 

roof as if it were my own and to do the best I can. A 

new contract may be an opportunity to make some 

money but should also be seen as opportunity to 

enhance your reputation. Always remember what 

Warren Buffet said: “It takes 20 years to build a 

reputation but 5 minutes to ruin one.” 

TC: Tell us about the current project 

you’re working on… 

AR: At the moment we are waiting for starts on a 

few large projects but an interesting one we are 

on is Ewenny Priory near Bridgend. It’s only one 

elevation to be done at present with standard 

sized Welsh Slates and the associated leadwork, 

so nothing remarkable but an interesting building 

in a different part of the UK. 

TC: Over the years, does one project in 

particular stand out? 

AR: Quintain House for which we became the first 

UK company to win an International Award for 

Pitched Roofing at the IFD Awards in Vienna. It 

was challenging from the start as I was not on 

the original tender list and had to talk the client 

and architect into letting me do the job in the first 

place. The roof obviously has the ‘wow’ factor 

and I could probably retire now if I had £1 for 

every time I have explained how we did it! A good 

roofer is a good problem solver and as we worked 

on and off the project for a period of 12 months I 

had plenty of time to plan and devise ways of 

getting over any technically awkward details, 

ultimately producing a finish with which we were 

suitably proud. 

TC: What about difficult customers? 

AR: Customers nowadays are generally better 

informed as they have access to information and 

specification on-line, but there’s nothing worse 

than having to prove a point to a customer who 

turns up as a roofing expert having spent 10 

minutes studying the internet – although it can 

make for some interesting conversations! 

TC: What’s the most frustrating thing 

about your job? 

AR: For me, the most frustrating thing is the lack 

of reward for training. By that I mean you can be 

the most qualified and capable roofer in the 

country but still lose a job to someone who has no 

skills or qualifications because they are cheaper 

on price. I get to meet many roofers within my 

role as Trainer and Assessor, and not one of them 

has been adverse to improving their knowledge 

and skills given the chance, but there needs to 

be an incentive to train. Hopefully the new NFRC 

Accreditation initiative will help to address this. 

TC: And the most satisfying? 

AR: The most satisfying aspect for me as a roofer 

has always been the ability to climb down the 

ladder at the end of the day, look at the roof and 

say “I did that”. I’m sure I’m not the only roofer 

out there who has bored their family senseless 

with the “I did that roof” talk on a Sunday drive! 

TC: What’s your most important tool 

either in the office or on site? 

AR: I would be lost without my Macbook and iphone 

nowadays. They really allow you to maximise time 

in your working day – I’m just not sure how we 

managed before we had this technology. 

TC: Best social media platform for you? 

AR: I’m afraid Twitter is the only social media 

platform I am conversant – I like the fact that it 

offers short bursts of information. 

TC: How do you feel your sector’s shaping 

up in 2018? Any reasons to be positive? 

AR: Things are really busy for us this year and 

hopefully off the back of us winning the UK 

Heritage Roof of the Year Award it will get even 

better. I am involved in the roll-out of the Heritage 

Level 3 Applied Skills Programme where we hope 

to raise the standard of Heritage Roofing across 

the UK, and I obviously hope the NFRC Roofing 

Accreditation scheme gets the support from the 

roofing industry it deserves so we really can have 

a trade we are proud to be associated with. 

@aprowlands 


Need a 

solution? 

Talk to us. 

Exciting new developments, 

same great service. 

NEW Premises Coming Soon 

Increased Stock Levels 

Expansion Plans 

New External Team 

01242 265 100 

sales@fixingpoint.com 

Roofing & 

Cladding 

Fixings 

Roofing & 

Cladding 

Support 

Systems 

Sealing 

Products 

Tools & 

Accessories 

Flat Roof 

Products

Fastener Tech 

PLACING FASTENER PERFORMANCE 

IN PERSPECTIVE 

In the latest instalment of his series of articles looking at the key issues concerning fixings 

for roofing and cladding projects, Brian Mack, Technical Business Development Manager at 

EJOT UK, explains why performance is crucial when it comes to choosing your fasteners. 

Performance; it’s something you consider on 

many levels when looking to change your 

car; fuel consumption, acceleration, engine 

size, torque and emissions. If it’s a company car 

you consider the tax rating and how it compares 

with colleagues’ vehicles. For a private car, maybe 

looks versus suitability for the teenage taxi run. All 

this just from thinking about performance. 

From a fastener specification perspective, 

performance is not always given the same due 

diligence. Price and availability are often first on 

the agenda, but certainly should not be the last! 

Like choosing a car, many aspects and 

performance figures need to be considered. 

Calling upon the manufacturer’s expertise in 

navigating the product portfolio and performance 

criteria is a beneficial exercise. That means it is 

our job as product originators to create a rapport 

and understanding of what the customer needs, 

and more importantly the connection to facilitate 

the application. 

Consider performance 

It’s forgivable to think that a cladding fastener, 

for example, can be chosen without considering 

performance. After all, it’s not securing a car’s 

transmission, neither is it a safety-critical anchor 

bolt securing heavy machinery or a steel beam. 

However, fastener performance should not be 

brushed under the carpet. Whether you are 

installing a profiled sheet for an entrance canopy 

or the sophisticated sarcophagus cladding 

covering Chernobyl’s renowned reactor building, 

understanding performance in application is vital. 

Tapping in to experience of these sectors and 

more can deliver unquestioned technical support 

to the specifier and the end user. 

Fastener – component – 

substrate 

Performance starts with the 

basics; which fastener will 

install the component to the 

substrate? Then we consider 

drilling or tapping capacity, 

speed of installation and suitability 

for the materials being fixed. Aesthetics, 

colour matching and long-term protection and 

seal against the elements are all equally 

important aspects of selection. 

Longevity 

The physical and metallurgical aspects and longterm 

performance need to also be considered. 

This means we consider pull-out from the 

structure, pull-over of the component being 

secured, shear performance, and components 

acting with and against each other. We look at 

corrosion and corrosion protection of the fastener 

Products undergo rigorous pull-out testing at the EJOT 

Applitec Centre. 

Left: Colorfast heads are subjected to 40 year 

performance testing, calibrated to 

realtime data. 

and the connection and 

bimetallic / galvanic reaction 

with dissimilar metals. 

Atmospheric conditions from 

within and outside the building 

and understanding how these 

chemicals react with different metals is also 

a critical aspect in fastener selection. 

Adapting to changes 

Experience and knowledge is the key alongside a 

scientific and technological approach in 

understanding and adapting this knowledge to the 

changes to materials and construction 

techniques. Construction never stands still and 

materials are continuously evolving which makes 

it even more crucial to select the product to meet 

the design performance of the application. 

It’s not just how it looks 

Sounds complicated? Just think in terms of 

choosing a car; it’s not just how it looks. Fasteners 

need to perform and work in the environmental 

conditions of the building’s location. They need to 

be compatible with the application and perform 

during their lifetime – not just on day one. 

Take on board the manufacturer’s advice and 

performance figures. We may not offer a cup 

holder but we offer fasteners that drive with 

performance at the heart of a quality connection. 

Contact EJOT UK 

01977 687 040 

www.ejot.co.uk 

@EJOTUK_Building 


SEE US AT 

The UK’s leading distributer of 

The 

Rolled 

UK’s leading distributer 

Lead 

of 

Rolled Lead 

and ancillary products... 

and ancillary products... 

and the largest 

and the largest 

Hard Metal 

Hard Metal 

and ancillary supplier 

and to the ancillary UK Building supplier Industry 

to the UK Building Industry 

Specifications 

CONTACT US 

ABOUT JOINING 

Specifications 

TOPHAT 

CONTACT US 

ABOUT JOINING 

TOPHAT 

Associated Lead Mills Ltd & ALM HM are the UK’s 

Associated leading distributor Lead Mills of Ltd Rolled & ALM Lead HM Sheet are the and UK’s ancillary 

leading products, distributor and the of largest Rolled Lead Hard Sheet Metal and ancillary 

products, supplier to and the the UK largest building Hard industry. Metal and ancillary 

supplier to the UK building industry. 

For Hard Metals, ALM HM hold extensive stocks of various 

materials from all leading European manufacturers including 

For Hard Metals, ALM HM hold extensive stocks of various 

VMZINC, Rheinzink, KME Copper, Aperam Stainless Steel, 

materials from all leading European manufacturers including 

Falzonal, Aluminium and Lindab Seamline PLX. We also stock 

VMZINC, Rheinzink, KME Copper, Aperam Stainless Steel, 

matching rainwater systems. All ready to deliver on our own 

Falzonal, Aluminium and Lindab Seamline PLX. We also stock 

FORS accredited transport. 

matching rainwater systems. All ready to deliver on our own 

FORS accredited transport. 

Further to the rolled lead and hard metals, ALM also supply all 

associated roofing and cladding products including Nvelope and 

Further to the rolled lead and hard metals, ALM also supply all 

Kladfix rail and support systems, Warmfast fixing clips, Warmfast 

associated roofing and cladding products including Nvelope and 

self adhesive foil faced vapour barriers, structured underlays and 

Kladfix rail and support systems, Warmfast fixing clips, Warmfast 

breather membranes, Linitherm PAL OSB, Linitherm PGV FLEX, 

self adhesive foil faced vapour barriers, structured underlays and 

Kingspan TR26, Metdeck, Foamglas Readyboard, Ecotherm 

breather membranes, Linitherm PAL OSB, Linitherm PGV FLEX, 

insulations, Freund tools, Jouanel and other machinery, Express 

Kingspan TR26, Metdeck, Foamglas Readyboard, Ecotherm 

and Perkeo Soldering Equipment, solder sticks, flux, cleaning 

insulations, Freund tools, Jouanel and other machinery, Express 

chemicals and more. 

and Perkeo Soldering Equipment, solder sticks, flux, cleaning 

chemicals and more. 

ALM offer the complete metal roofing, cladding 

ALM and offer insulation the complete package. metal roofing, cladding 

and insulation package. 

One call, one contact, 

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everything in one place 

01992 444100 

01992 444100 

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www.associatedlead.co.uk 

info@associatedlead.co.uk 

www.associatedlead.co.uk 

info@associatedlead.co.uk

EPDM Membranes 

THE SHAPE OF THINGS TO COME... 

John McMullan, Commercial Manager at Firestone Building Products, discusses the 

installation of the company’s GeoGard EPDM Membrane at the New USA Embassy 

Building in London – but it’s not on the roof… 

Described as a crystalline “sugar cube” and a “modernist museum”, the $1 billion New London 

Embassy (NLE) has the accolade of being the most expensive embassy building ever built. 

Adjacent to the impressive, high specification building is an extensive pond, which both 

enhances the public realm around the embassy and provides a defensive border in the form of a moat. 

The pond was designed by the project’s American architect Kieran Timberlake. The firm also specified 

the use of Firestone’s GeoGard 1.5mm EPDM lining membrane, which involved some unique and 

complex installation challenges for construction and civil engineering contractor, PJ Carey. 

7 

project issues and facts: 

1. The 6,000m² pond is a pretty unusual 2. The straight edges of the pond feature a 5m 

shape. At first glance it’s a straightforward semi- 

high retaining wall bordering a walkway around 

circle, but on closer inspection there’s a dog’s leg 

bend at 90 degrees creating a waterfall at a right 

angle to the main wall, followed by a further 90 

degree bend before the pond continues along a 

parallel route. The flexible GeoGard EPDM 

membrane provided the ideal solution for lining 

the contours of this combination of curves and 

angles, with Firestone’s QuickSeam tape used to 

seal all joints in the membrane. Despite being 

just 1.5mm thick, the system enables elongation 

of up to 300%, minimising the risk of tearing and 

also provides excellent puncture resistance. 

the building perimeter. These walls create an 

impactful 5m drop for a feature waterfall, which 

is fed by pipework that takes water from the 

curved wall to the rear of the building. The EPDM 

membrane had to be installed up the vertical 

surfaces of these 5m walls and the installation 

team roller-applied Firestone Bonding Adhesive to 

the prepared concrete surfaces before applying 

the GeoGard EPDM membrane directly onto the 

substrate. 

3. 

Above: Laying of the GeoGard EPDM membrane in the main pond area. 

The pond installation team had to prepare 

6,000 penetrations for the cladding system which 

The $1 billion New London Embassy (NLE) has the accolade 

of being the most expensive embassy building ever built. 

was used to conceal the concrete substrate along 

the straight edge of the pond. The PJ Carey team 

worked closely with the cladding specialist, 

marking the penetration locations on a grid, prior 

to installation of the first fix. With the first fix 

bracket in place, each penetration was sealed 

using Firestone’s QuickSeam FormFlash and the 

penetrations were checked by Firestone’s 

technical team, using compressed air to verify the 

seal. The second element of the bracket could 

then be installed in preparation for installation of 

the cladding panels. 

4. 

The EPDM membrane installation required a 

complex variety of details and penetrations and 

Firestone’s technical team trained the installation 

crew and visited the project several times to 

troubleshoot on specific detailing challenges. 

5. 

The tricky detailing involved in the EPDM 

membrane installation included 44 ornamental 


scuppers that act as an overflow to manage the 

water level in the pond; outlets where the water is 

supplied into the pond from the building’s mains 

and rainwater harvesting systems; 15 drainage 

outlets of various sizes around the pond’s internal 

perimeter; various steps and corner details and a 

twin dwarf wall around the curved edge. 

Firestone’s QuickSeam FormFlash – an uncured 

EPDM membrane factory-laminated to 

QuickSeam tape – was used to help form all 

“The contractor’s team lapped the GeoGard 

EPDM membrane over coving that was installed 

around the perimeter of the pond basin, bringing 

it down from the vertical surface and adhering 

it to the coving” 

these details on site. 

6. 

To create the base of the pond, PJ Carey 

compacted the excavated surface and laid a 

50mm layer of bedding sand, followed by a 

geotextile layer and finally the GeoGard EPDM 

membrane. The contractor’s team lapped the 

GeoGard EPDM membrane over coving that was 

installed around the perimeter of the pond basin, 

bringing it down from the vertical surface and 

adhering it to the coving. The GeoGard EPDM was 

also lapped up the coving and a third layer of 

GeoGard EPDM was applied over the 500mm lap 

to create a very robust seal. 

7. 

Thanks to the size and complexity of the 

pond, the project took more than eighteen months 

to complete! 

Left: Installation of field flashings around penetrations in the Firestone GeoGard EPDM membrane. Right: Installation of the 

GeoGard EPDM membrane in the planter areas of the pond. 

Contact Firestone 

01606 552026 

www.firestonebpe.co.uk 

@FirestonebpUK 

Our mission: 

“To provide standards and 

guidance to our members, 

 

businesses and householders, 

 

skilled, professional sector 

 

industry.” 

Find out more at nfrc.co.uk 

@TheNFRC 


Fixings & Fasteners 

KEY QUESTIONS FOR YOUR SUPPLIER 

By Jason Wood, Contracts Director at Fixing Point. 

Building a constructive relationship with your fixings and fasteners supplier is crucial to the 

overall success of a project. Contractors should always seek advice from their supplier on 

technical performance specifications. Understanding the intended application of products is 

essential to this process, so the appropriate information should be provided. Below, i’ve outlined some 

key questions to ensure your project runs as smoothly as possible. 

“It’s important to 

understand how much 

force a fixing can 

withstand and its 

resistance to corrosive 

elements” 

Q: What type of fixing should be used for a 

build up into a particular substrate? 

When working with a particular substrate it’s crucial 

that the correct fixings are used for the individual 

application, as these are the key components that 

secure the structure for its lifespan. 

For example, in most building structures a roof 

will be more affected by wind uplifts than a wall, 

so roof fixings would normally require a larger 

washer than wall fixings. 

The ultimate pull out grade of a particular fixing 

will also change depending on the final thickness 

or type of material it is going into – such as thin 

or thick steel – so providing all the information 

about the building materials and construction to 

your supplier is vital. 

Q: What is the best fixing for drilling into a 

particular thickness of material? 

Specifying the thickness of your material is 

critical to ensuring the correct fixing is chosen. 

For example, will you be using light (1.2mm- 

4mm) or heavy steel (5+mm)? 

It is important to provide all the information about 

the building materials you intend to use to your 

supplier so appropriate recommendations can be 

made. 

Q: What type of fixing will provide the best 

protection from increased weather 

exposure? 

Using the incorrect fixing could not only cause 

damage to the building; it could pose a serious 

risk to health and safety. 

Considering the environment of a building is vital 

when selecting the appropriate fixings and 

fasteners for construction as the local and 

immediate surroundings will influence any 

recommendations. 

For example, coastal and high wind locations 

have a higher risk of structural damage and 

corrosion exposure compared to other areas. 

Therefore, it’s important to understand how much 

force a fixing can withstand and its resistance to 

corrosive elements. 

Q: What type of warranty and guarantees 

should I expect with fixings? 

The warranty and guarantee of fixings and 

fasteners can vary significantly from product to 

product and purchasers must decide whether a 

fastener life expectancy is suitable for their 

particular application. 

However, it’s important to note that if products are 

not used as recommended or in an unsuitable 

environment, any guarantee may be rendered void. 

Because of this, it’s important that contractors 

work closely with their suppliers to select the 

right product for their environment and get the 

most out of their warranty. 

At Fixing Point, we also offer life expectancy 

statements that are tailored to the specifics of a 

project. If you’re working on a particularly complex 

project, this should be discussed with your 

supplier so you can fully understand your options. 

Q: What benefits does a stainless steel 

fixing have over a carbon steel fixing? 

Stainless steel is much more durable than carbon 

and can ensure the overall stability of a structure 

is maintained over time. 

As carbon is much cheaper than stainless steel, 

it can be tempting for contractors to opt for this 

solution, but cutting costs can negatively impact 

the long-term quality of a structure’s fixings. 

Stainless steel has a significantly longer 

guarantee than carbon steel and is therefore 

more beneficial for ensuring a project’s longevity. 

Guarantees are produced on a job to job basis 

ensuring the corrosive factors of a particular 

environment are taken into account. 

Q. Are you able to advise on the correct 

fixings and procedures during the 

construction phase of a project? 

Ensuring you have support from your supplier for 

the duration of a project is essential to resolving 

any on-site application problems. 

Maintaining regular contact and updating them 

with information on the materials you are using at 

each stage will mean they can offer you 

appropriate advice throughout. 

Your supplier should also be able to advise on the 

performance of a fixing, such as pull out values, 

tensile and shear strengths. Specific 

requirements should then be discussed with your 

structural engineer. 

Contact Fixing Point 

01242 265100 

www.fixingpoint.com 

@FixingPoint 


Focus... 

on results 

When you need a reliable solution, you need a team behind you with 

experience, dedication and quality unrivalled in the delivery of industry 

leading products. At SR Timber we FOCUS on: 

n Product quality and distribution 

n Sustainability, Certification and British Standards 

n Continued investment and ranges 

With decades of experience, our team is more 

passionate than ever, offering you expertise, 

independent advice, experience and industry support. 

TEL: 01623 446 800 

sales@sr-timber.co.uk 

www.sr-timber.co.uk

Upstands 

DEALING WITH UPSTAND ISSUES 

Stephen Cleminson, SIG Design & Technology’s Technical Director, highlights best 

practice for upstand design. 

Acommon question our team is asked is: 

“What should the upstand be on a flat 

roof?” followed by, “What if I haven’t got 

150mm?” This article is about why upstands exist 

and how you can avoid asking the second 

question. 

Why do we need flat roof upstands? 

The requirement for flat roof upstands is set out 

in the British Standard BS 6229:2003 Flat roofs 

with continuously supported coverings 

(https://www.thenbs.com/PublicationIndex/docu 

ments/details?Pub=BSI&DocID=263160) 

See section 7, p12. This requires that: 

“The design of drainage falls should ensure that 

the continuity of the waterproof covering is 

maintained for a vertical height of 150mm above 

the finished roof level at all abutments, door 

openings and parapets.” 

Rainwater can collect to quite a depth on a roof 

during heavy storms. An upstand, be it against a 

parapet, penetration or facade, 

ensures that the 

waterproofing does its 

job and that exposed 

brickwork, external 

cladding or other 

building elements are 

not flooded or saturated. 

How to deal with level 

thresholds and exceptions 

to the 150mm rule 

The SPRA Design Guide 2016 

(http://www.spra.co.uk/wp- 

content/uploads/2017/06/2-S01- 

16DesignGuide.pdf) describes an exception 

regarding balconies and terrace access. See p29, 

Access to Balcony or Terrace: 

The requirement of a 150mm waterproofing 

upstand is fundamental to reliable detailing. 

However, working with building insurers and the 

residential sector, SPRA is aware of the 

requirement for unimpeded access to balconies 

and roof-level terraces in many designs. In this 

situation only, the requirement has been 

reduced to 75mm at the opening, provided that 

the following conditions are met: 

• Rapid removal of rainwater across the width 

of the opening, by including a proprietary 

Left: This shows a great example of 

how NOT to do an upstand to a 

penetration, with a plastic bag 

and sticky tape. 

drainage channel in 

front of the threshold. 

• The waterproof 

membrane extends 

150mm height in the door 

reveal and roof / abutment wall 

adjacent. 

• The waterproof membrane flashing extends 

fully below the door frame bottom rail and is 

sealed to it. 

• A horizontal gap of minimum 10mm is 

maintained between frame front edge and 

drainage channel. 

Four possible ways to deal with 

upstand issues 

1. Consider localised drop gutters. However, if you 

eat into the insulation to achieve this, you may 

create a cold spot with condensation issues, or 

you might not achieve the required U-values in 

some areas. There is also more detailing and 

changes of direction to consider regarding the 

installation. 

2. It may be possible to change the insulation 

Left: This shows the upstand work at Arnold Hill Academy in Nottingham; Middle: This shows a strong 150mm pipe detail 

upstand; Right: This is a great example of a tall upstand – whilst 150mm is a minimum, there is no maximum height. 


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Upstands 

type to one with a better U-value (for example, 

changing tissue-faced to foil-faced) for a better 

performing insulant. But you do need to be aware 

of the knock-on effects. For example, say you 

decide to use a bonded membrane – which 

traditionally uses tissue faced insulation, then 

changing to a foil faced insulation may necessitate 

a change to a mechanically fixed membrane. 

3. Consider an under and over insulation solution; 

to move part of your insulation to below the Vapour 

Control Layer, where possible. But you do need to 

be careful and ensure a full U-value and interstitial 

condensation risk analysis is undertaken to confirm 

that moving some insulation below the VCL to gain 

height above the membrane will not create a 

condensation problem. Make sure you do the sums 

so not to actually make the situation worse with 

your solution! 

Above left: Example detail, 150mm upstand to brickwork with chased joint - single ply. Above right: Example detail: 150mm 

upstand to cladded abutment – single ply. Both details: IKO/SIG Design & Technology. 

across the parapet. By going continuously over 

the parapet and into a drip, the upstand is 

effectively only acting as a rain-check. 

These examples show you need an all-round 

knowledge of roof design to know what can be done 

with layers and levels and products to help you 

achieve compliance in any particular situation. 

“You need an all-round 

knowledge of roof 

design to know what 

can be done with layers 

and levels & products” 

4. It may be possible to convert the upstand into 

a rain-check. You could take the waterproofing up 

75mm, right across the cavity and have a drip 

Remember, this standardised approach may not be 

suitable for your project. Our experts can help you 

with design advice – feel free to consult us. 

Contact SIG Design & Technology 

0844 443 4778 

www.singleply.co.uk/perfectroof/ 

@SIGDesignTech 

THE LIGHT FANTASTIC... 

At the President Kennedy Academy in Coventry, an 85m² application of Marvault, a 

continuous vault rooflight system from Brett Martin Daylight Systems, has helped to 

deliver exceptional levels of diffused daylight into communal areas of the school. 

Built as part of the Priority School Building 

Programme and replacing a 1960’s school 

building, the new three-storey secondary 

school in Holbrooks has a floor area of more than 

11,000m² and serves approximately 1,600 

students. With the academy’s central areas 

requiring a natural light source to optimise 

internal environment conditions, the Marvault 

system provided the optimum combination of 

high light transmission and UV protection, whilst 

having a positive impact on students’ wellbeing. 

Glazed in triple skin opal polycarbonate and 

featuring trickle vents in the kerb, the eight vaults 

were installed by Advanced Roofing & Cladding. 

Offering ease of installation, the rooflight system 

laps together to form rooflights runs, which at the 

academy enabled runs of more than 21 metres in 

length and spanning 1.5 metres. The economic, 

simple-to-fit, barrel vault system complemented 

the new facility’s high quality external aesthetic 

whilst helping to reduce energy demands. 

Manufactured with an aluminium frame and 

powder coated in a semi-gloss white colour to 

meet the client’s requirements, the fully thermally 

broken skylight system was fabricated and 

precision-engineered at Brett Martin’s factory in 

Coventry, before being assembled and installed 

on site by the specialist contractor. 

With a maximum span of 9 metres and no 

restriction on length, the versatile Marvault 

rooflights are suitable for use on flat, curved, low 

pitch and standard pitch roofs making them ideal 

for a range of applications from leisure, sporting 

facilities and commercial buildings through, to 

education and health centres. 

Advanced Roofing & Cladding 

installed Brett Martin’s 

Marvault system at the 

President Kennedy Academy. 

Contact Brett Martin Daylight Systems 

024 7660 2022 

www.brettmartin.com 

@BMDaylight 


SEE US AT 

LINCOLN CLAY PANTILE. 

TRADITIONAL FEEL. 

INNOVATIVE FIT. 

The Lincoln clay pantile features fl exible open gauge 

technology with a new fl at batten locator. 

Shaped with an elegant s-curve design and thin leading 

edge, the clay pantile is engineered for pitches as low 

as 17.5°, for fast and simple fi tting across a variety 

of installations. 

And of course, Lincoln clay pantiles fully comply with 

BS 5534 and NHBC Standards. 

Discover more smart thinking (and order free samples) at 

marleyeternit.co.uk/lincoln 

Or call us on 01283 722588 

Marley Eternit. The roof system others look up to.

How To: 

WATERPROOF A PIPE PENETRATION 

By Stuart Hicks of Kemper System. 

The performance of any roof can be compromised by a pipe penetration. If it is not waterproofed 

effectively it can cause leaks, damage to the building and unnecessary costs. One of the most 

effective ways to waterproof a pipe penetration is using a fleece reinforced liquid applied system. 

Durable and tear resistant, these systems can accommodate awkward roof details such as penetrations 

without the need for additional mechanical fixings. For contractors considering using a liquid 

waterproofing system for this application, here’s a guide to what’s involved. 

“Use a brush or nylon 

roller to ensure all air 

bubbles and creases 

have been removed” 

Step 1: 

Cut a piece of 

fleece to wrap 

the pipe using the 

correct 

1 

dimensions. The 

length should be the 

circumference of the pipe plus 50mm. The height 

should be a minimum of 150mm plus 50mm, 

which needs to be cut into fins to suit the 

circumference. 

Step 2: 

Wrap the pipe 

with the first 

piece of fleece to 

give a visible 50mm 

2 

vertical overlap and 

making sure each “fin” is at right angles to the 

pipe. 

Step 3: 

Cut a square 

piece of fleece for 

the collar and 

round off the 

3 (a) 

corners. The collar 

should be the diameter of the 

pipe plus 250mm. 

Place the fleece 

centrally over the 

top of the pipe. 

Draw a circle 

3 (b) 

using the inside of 

the pipe and then 

cut out. This 

ensures the hole 

for the pipe is 

3 (c) 

approximately 10mm 

less than the diameter of 

the pipe. Place the collar over the pipe to ensure 

a snug fit. 

Step 4: 

To ensure a neat 

appearance, 

mask the pipe 

above the 

4 

application area and 

the surrounding deck, and then 

remove the fleece. 

Step 5: 

Dip the fleece 

wrap in the resin 

to completely 

saturate and then 

5 

place in position. Apply 

resin to the substrate around 

the pipe. 

Step 6: 

Dip the collar in the resin to completely saturate 

and place in position by sliding down over the 

pipe and fleece wrap. 

Use a brush or nylon roller to ensure all air 

bubbles and creases have been removed. 

6 

Remove all of the masking tape to present a neat, 

professional job. 

To ensure the installation is a success, it is also 

vital that contractors get advice and / or training 

from the manufacturer of the liquid waterproofing 

system before applying it. 

“The performance of 

any roof can be 

compromised by a pipe 

penetration. If it is not 

waterproofed 

effectively, it can cause 

leaks, damage to the 

building and 

unnecessary costs” 

Contact Kemper System 

01925 445532 

www.kempersystem.co.uk 

@KemperSystemUK 


Green Roofs 

INSTALLATION ADVICE TO ENSURE 

YOUR PROJECT RUNS SMOOTHLY 

Mark Harris, Chairman of the Green Roof Organisation (GRO), talks through some of the 

key challenges when installing a green roof system. 

Since the Green Roof Organisation formed over ten years ago, the green roof market has diversified 

significantly both in the design of the green roof system options and the methods of procurement. 

Today, a wide variety of different plant types are regularly specified within biodiverse roof 

systems and green roofing packages are installed by either roofing contractors, specialist green roof 

contractors or specialist landscaping contractors. 

“The need for cranage 

should be discussed 

early with the main 

contractor” 

However, the fundamental rules of installation practice and the installation challenges remain the same 

whether the green roof system is of an Extensive or Biodiverse nature. 

7 

key considerations to make when installing a green roof: 

Design & Specification 

Pay close attention to this, whilst ‘green roof’ is a 

generic term, it covers a myriad of options 

especially when it comes to plant species 

requirements. This is particularly true of London 

where the London Plan informs the local 

environmental requirements and ecologists 

regularly require specific plant mixes to replicate 

the original flora at a specific site. With the new 

Mayors of Manchester, Birmingham, Sheffield and 

other Cities being given the same planning 

powers as the Mayor of London, the industry 

expects to see the demand for specific local 

planting schemes to increase across the UK 

dramatically over the next ten years. 

Another key item is the height of the 

waterproofing at upstands and penetrations, 

which must extend 150mm above the finished 

green roof height – not the waterproofing height. 

Lifting 

Main contractors always want the crane down as 

soon as possible, but green roofs require bulky, 

heavy materials to be lifted to roof level for 

distribution. The need for cranage should be 

discussed early with the main contractor, and the 

point should be made that installing the green 

Above: Green roofs at the Scottish Parliament building at Holyrood, Edinburgh. 

roof is the equivalent to installing a concrete 

deck, and therefore the installation process 

shouldn’t be considered as part of the relatively 

light weight roof waterproofing system. 

Drainage boards 

These are designed to be installed one way up 

only; make sure the installation team know which 

way a specific board should be laid – some are 

flat sheets and others come on rolls. 

The team should know whether the drainage 

boards are butt jointed or overlapped at the sides 

and ends. The drainage boards should also run 

edge to edge of the roof to ensure correct 

drainage. 

Growing medium / substrate 

This typically comes in bags weighing from 20kg 

to 1.25 tonnes, with a 1.25 tonne bag typically 

covering circa 20m² at 50mm depth: so, there 

will be plenty of them to lift to cover a 300m² roof 

area. With wildflower systems typically requiring 

120mm – 150mm substrate depth the coverage 

will reduce significantly. 

When installing the team need to know what depth 

to install at and what settlement to allow, 


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Green Roofs 

typically between 10% and 

20% depending on 

product. As all 

specifications will be 

for a finished settled 

depth, enough 

material needs to be 

allowed and installed 

to meet this requirement 

post settlement. 

Once installed the substrate 

should be irrigated to saturation prior 

to the installation of the planting. 

Plant installation 

This will vary depending on whether the 

specification is for a pre-grown blanket, pregrown 

plug plants or seeds. Pre-grown blankets 

should be installed within a maximum of 36 hours 

of delivery – sooner if the weather is warm – as 

they will start to ‘cook’ 

whilst rolled up 

destroying plant life. 

Plugs should be 

installed into the 

substrate at the 

m² quantity 

specified and in 

the mix percentage 

required by the 

specification. Seeds 

should be mixed with sand at 

the weight specified and hand cast 

across the roof. 

Once installed the planting should be thoroughly 

irrigated to aid establishment. Typically between 

April and October temporary irrigation will be 

required for 6 to 8 weeks, but warmer spells or 

unusually warm weather outside of these 

months may increase the irrigation requirement. 

“Pre-grown blankets 

should be installed 

within a maximum of 

36 hours of delivery – 

sooner if the weather is 

warm” 

Gravel margins 

Typically, 20/40mm rounded ballast is specified 

at perimeters and penetrations. This serves three 

key purposes: fire breaks, erosion control and 

vegetation breaks. The GRO Code provides 

guidance on suitable widths for these as will the 

specification. 

Rainwater outlets 

These should be accessible for future ongoing 

annual maintenance, typically by an inspection 

chamber that should be the same depth as the 

green roofing system. 

“Typically, 20/40mm rounded ballast is specified 

at perimeters and penetrations. This serves 

three key purposes: fire breaks, erosion control 

and vegetation breaks” 

Contact the Green Roof Organisation 

020 7638 7663 

www.nfrc.co.uk/green-roof-installations 

Top and left: the fundamental rules of installation practice 

and the installation challenges remain the same whether the 

green roof system is of an Extensive or Biodiverse nature. 

Below: Image courtesy of Mike Cottage, The Urban Greening 

Company. 


Innovative upgrade & refurbishment solutions for profiled fibre cement or metal roofs & cladding 

SEE US AT 

Fragile roofs are only unsafe 

if you walk on them. 

Replace rooflights and sheets from below with Fixsafe. 

Figures published by the Health & Safety Executive show that falls through fragile roof 

materials caused over one quarter of fatal accidents in the construction industry. 

Fixsafe addresses the problem and is playing a major role in reducing this statistic. 

Fixsafe allows sheets to be replaced from below, eliminating the need to access fragile 

roofs and thereby greatly increasing site safety. By removing the requirement for costly 

safety netting, roof staging or external scaffolding, on-site time is reduced and access 

equipment costs are minimised. 

Replacing rooflights from below is an HSE recommended method and complies with 

Regulation 9 of the Work At Height Regulations 2005. Protect your roofers and yourself and 

your team by repairing or replacing rooflights and roof sheets with Fixsafe. 

We also offer: • Insulated rooflights for energy-saving upgrades and refurbishment 

• Lightweight over-roofing for cost-effective roof refurb with minimal disruption. 

For details, please call us on 01543 687300 or visit www.filon.co.uk 

Filon Fixsafe allows replacement rooflights 

or roof sheets to be installed from below, 

avoiding the need to access fragile roofs 

Filon Products Ltd, Unit 3 Ring Road, Zone 2, Burntwood Business Park, Burntwood, Staffs WS7 3JQ

Roof Windows 

WEATHERTIGHT INSTALLATIONS 

It is vital that the roof window you choose is installed correctly to ensure a weathertight 

roof, so here Lee Griffiths (pic), Technical Sales Manager GBI at Dakea, looks at what 

contractors need to consider. 

Filling the gap 

If an un-insulated gap is left between the window 

and the rafters, it can be difficult and costly for 

homeowners to keep a comfortable temperature 

in the home, as water and air can pass through 

and make rooms cold and damp. Due to the small 

space between the window and the rafters, it can 

be time consuming and difficult for installers to 

create a fully watertight and insulated fit. The 

solution is to use an Insulating Foam Collar (IFC). 

A rebated foam profile manufactured to fit the 

window frame, the IFC offers superior insulation, 

a watertight seal and has the advantage of 

reducing installation time to approximately three 

minutes per window. An IFC is included as 

standard with our Ultima windows. 

Membrane materials 

When installing a window, it is essential to repair 

the roofing membrane to restrict air and water 

ingress. An installer knows this process requires 

a high level of accuracy to ensure a water and 

airtight seal. To help with this, when cutting a 

hole in the original membrane for the window, 

installers shouldn’t cut back to the rafters and 

battens – but instead leave enough to be able 

staple it back to the woodwork in order to prevent 

water ingress. The membrane must also be used 

to form a gutter system that has a sufficient fall 

in it to catch water and direct it away from the 

opening in the roof and prevent costly interior 

damage. 

For added security, an Underfelt Foil Collar can be 

used. The single piece of stretchable fabric 

removes any need for cutting and joining 

membrane material directly around the window. 

Simply slide this underneath the battens and fix 

securely for a water and airtight barrier in a quick 

15-minute process. 

Once the frame is installed but 

before it is securely fixed in 

place, the sash should be fitted 

back into the frame to check the 

alignment. A slightly misaligned 

sash or frame fit will let water and air 

in. For the frame, if the gap down the side 

between the sash and frame is wider at the top 

than the bottom, an adjustment can be made by 

carefully applying pressure to the outer edge of 

the frame with a crowbar to square up the 

window. 

In addition, when the window is open inspect the 

bottom between the sash and the frame – this 

should be even the whole way across. If it’s not, 

use a wedge to lift the exterior bracket on the 

opposite side to where the opening is wider. This 

will bring it back into alignment. 

“Water ingress can 

happen if there is 

space left where the 

tiles ‘kick’ as they pass 

over the flashings” 

Tight tiling and flashing 

When replacing the tiles, they need to pass over 

the flashings to ensure the water runs away from 

the window. Water ingress can happen if there is 

space left where the tiles ‘kick’ as they pass over 

the flashings. ‘Kicking’ can be minimised by 

removing tile nibs if necessary and tiles can be 

fitted closer to the flashings by fixing them to the 

battens with screws. 

It is also recommended to slit the foam right 

above each tile to avoid the gap between the 

foam and tile junctions. It’s likely that tiles will 

also need to be cut to ensure a 

perfect fit – when cutting, be 

mindful that the gap is within 

the recommended tolerances 

(30-60mm on the sides, 60-150 on 

the top). 

A tried and tested product 

Choosing a product that has been thoroughly 

tested will provide peace of mind. The UK sees an 

average of 133 days of rain or snow per year and 

the British weather is becoming more 

unpredictable, with severe storms previously 

considered to be a 1 in 100 year event now 

occurring much more frequently. An example of 

this is Storm Ophelia in October 2017 during 

which winds of up to 97mph were recorded. 

Ensuring the chosen window has been designed 

to withstand these conditions is vital. For 

example, our Ultima window has been tested for 

wind speeds of up to 104 mph (the equivalent of 

a Category 1 hurricane) and 600 litres of water 

falling in just one hour – the same as a year’s 

rainfall per square metre in London. 

Flying debris is also a risk during a storm so an 

impact resistant outer pane and laminated inner 

pane will reduce the chance of damage and 

improve safety. For further peace of mind, seek a 

window where manufacturers can provide a 

warranty – such as a lifetime warranty against hail. 

The seal between the roof and window is vital to 

avoid issues for the homeowner. Carefully installing 

a high quality roof window will protect the property 

from even the most severe British weather. 

Contact Dakea 

0203 598 1165 

www.dakea.com 

@Dakea _UK 


SEE US AT 

IT DOESN’T JUST LET OUT SMOKE 

That hatch with the ladder running up to it? Yes, it’s a Bilco smoke vent. 

Now, you may know it as one of the best smoke vents on the market (CE-marked, 

self-actuating in less than a minute, excellent thermal properties, and so on). 

But simply add a fixed ladder with the optional LadderUp® Safety Post, and you also 

have a safe exit out onto the roof. 

So the next time you specify a smoke vent, make sure it’s a Bilco. 

As both a smoke vent and an access hatch, you get two solutions for the price of one. 

To find out more, call us on 01284 701696 or visit www.bilcouk.co.uk 

incorporating 

SAFE ACCESS ALL AREAS 

WORLD CLASS FLOOR ACCESS COVERS 

Bilco UK and Howe Green are part of the ERA Group

Rainwater Systems 

TOP TIPS FOR INSTALLING PITCHED 

ROOF DRAINAGE PRODUCTS 

Tony Wereszczynski, Technical Director at Marley Alutec, gives his top tips for problem 

free selection and installation of eaves drainage systems. 

Calculate for a rainy day 

It is crucial to ensure the capacity of the gutter 

meets the requirement for the building. The flow 

rate of the gutter varies depending on the profile, 

size and fall at which the gutter is fitted. 

In order to ensure the correct system is chosen, 

the calculation of the roof area predicted rainfall 

intensity must be established at the design stage. 

Reference should be made to BS EN 12056-3: 

2000 which provides detailed information on 

rainfall throughout the UK, by geographical 

location and frequency of occurrence. The 

guidance given in the standard recommends that 

eaves gutters are sized to ensure the calculated 

peak run-off does not exceed 90% of the gutter 

capacity. 

However, the increasingly unpredictable nature of 

the UK weather must also be taken into account, 

as heavy rainfall and extreme weather events are 

occurring more frequently. Therefore, it is 

considered best practice to factor in additional 

capacity when designing a roof drainage system 

to ensure it can cope with higher levels of rainfall. 

Joint durability 

With a lifespan of 50 years or more and minimal 

maintenance throughout their lifespan, aluminium 

rainwater systems provide a long lasting, durable 

alternative to PVC or cast iron. However, ensuring 

a secure connection between each component is 

crucial. Joint sealing must not 

be carried out in wet weather, 

or in temperatures below 

5°C (due to frost, ice or 

condensation on the 

surface) or above 40°C (as 

the sealant may not cure 

correctly under these conditions). 

Joint surfaces must also be completely clean 

and dry. Some dirt and grease may be difficult to 

see – use a clean cloth and solvent cleaner to 

remove all traces. 

The perfect fix 

To ensure long-term durability, it is also crucial to 

ensure that the fixing components used are 

capable of providing the necessary support. They 

must be non-corrosive and of a compatible 

material to ensure that no electrolytic corrosion 

occurs. Only the recommended austenitic 

stainless steel screws must be used to fix the 

gutters, whether direct, fascia or rafter bracket 

fixed. 

Make sure the system manufacturer’s 

recommended fixings are used at all times. 

Plain sailing for refurbishments 

When replacing existing systems, fascias and 

soffits are often also replaced to accommodate 

the new gutters. Unlike UPVC soffits and fascia 

systems, composite aluminium soffit and fascias 

can be fixed over timber fascias as long as they 

are sound and rot free. 

Composite aluminium products such as our Evoke 

range, for example, can be installed directly onto 

the building and will support the weight of gutters 

without the requirement of backing boards. 

Extremely light and strong, they 

can be adapted on site with 

basic carpenter tools to 

create bespoke designs 

including large overhangs 

and curved rooflines. This 

also means that modifications 

can be made during installation, 

avoiding costly delays. 

Reach new heights 

Installing gutters involves working at height, 

which means work must be compliant with Work 

at Height Regulations 2005. As part of the 

regulations, the work must be properly planned 

and organised, risks assessed and appropriate 

work equipment such as scaffolding or raised 

platforms must be selected and used. 

When working with heavier gutters such as cast 

iron, which are typically upwards of 10kg per 

1.8m length, the installation can often be a two 

person job, increasing the risks of working at 

height. 

Aluminium gutters are a lightweight alternative. 

Approximately 65% lighter than cast iron they 

can be installed just as easily as PVC systems, 

with no specialist tools or skills required. This 

makes them much easier to manage on site, 

though of course, Work at Height Regulations 

2005 and other health and safety protocols 

should always be observed. 

Contact Marley Alutec 

01234 359438 

www.marleyalutec.co.uk 

@marleyalutec 


FREE 

Site Survey & 

Quotation Service 

enquiries@kempersystem.co.uk 

KEMPEROL ® 

Liquid Waterproofing 

Long term protection for flat roofs, 

buildings and critical structures 

Warm roofs, inverted roofs, green roofs, 

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Contact us to discuss 

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Tel: 01925 445532 

enquiries@kempersystem.co.uk 

www.kempersystem.co.uk 

Kemperol Liquid Waterproofing

Project Focus 

STANDING OVATION! 

Total Contractor hears about BEMO’s role in the roof 

development for Wimbledon’s famous Court No.1. 

As a trusted supply chain partner of Prater, 

BEMO has played an integral part in the 

roof development on No.1 Court at The All 

England Lawn Tennis Club (AELTC) in Wimbledon. 

Such a high profile project required a collaborative 

approach from everyone involved in order to meet 

the client’s brief – from the design phase, to the 

creation of a complex programme structure, right 

through to the level of quality delivered onsite – 

and BEMO continues to work closely with Prater to 

ensure a successful completion. 

Due to the need for the AELTC in Wimbledon to be 

accessible every year for the celebrated tennis 

Championships, it was decided that the project 

would be divided into three separate phases. 

Phase two of the project is nearing its conclusion, 

in time for the 2018 Championships, with trades 

returning to site in August to begin the final phase. 

BEMO’s scope of works on the project comprises 

both the engineering and the supply of a standing 

seam roof system. For the Outer Roof, the design 

involved a fully tapered scheme with roof sheets 

reaching up to 17 metres in length. For the Inner 

Roof, the design involved a combination of 

parallel and tapered panels to accommodate the 

complex geometry. 

Bespoke Solution 

This complex roof design required detailed 

analysis of the structural and surface models 

generated by KSS Architects and Thornton 

Tomasetti Cladding Consultants. 

The steel structure provided a facetted surface, 

while the design intent required a smooth external 

roof surface. In order to overcome the varying 

distances between the structure and external 

surface, the BEMO-Flex system was specified, 

which provides a mass-customised sub-structure. 

The installation of the BEMO-Flex system required 

Prater to install the decking panels and lower 

section of BEMO-Flex before the BEMO team then 

surveyed the position of the installed modules to 

ensure complete accuracy and to eliminate 

steelwork tolerances. The data taken from the 

survey was entered into the Rhino model and the 

second part of the BEMO-Flex module was then 

designed to match up to the modelled roof surface. 

Through CNC manufacturing processes, the 

BEMO-Flex modules were fabricated in 

accordance with the model and delivered to site 

within a matter of days to allow continuous 

installation. This process ensured that the halters 

were in the desired position to take the standing 

seam panels, which had been produced well in 

advance of construction. 

The newly engineered BEMO-Flex system 

provided a customised sub-structure between the 

decking and standing seam surfaces, allowing the 

varying distances and angles required to be 

accommodated. 

Let it rain 

A key element of the No.1 Court project is the 

addition of the retractable roof – providing the 

AELTC with another space where play doesn’t 

have to be affected by the weather. With the 

inclusion of a moving roof element, the steel 

structure had to be designed to move when the 

retractable roof is opened and closed. 

It was crucial that the design ensured that the 

standing seam roof could accommodate such 

movement. Both BEMO and Prater were involved 

in a number of design meetings in advance of 

work beginning onsite, to eliminate the risk of 

problems arising and changes being required 

within the construction stage of the project. 

Just in time 

Working on a restrictive site with minimal storage 

Prater and BEMO worked closely together on the new 

retractable roof at Wimbledon’s famous Court No. 1. 

space, the logistics of materials arriving on site 

can often prove challenging. To overcome this, 

BEMO worked closely with both Prater and Sir 

Robert McAlpine to ensure a detailed programme 

was created to suit the site. Materials had to be 

delivered in a ‘just in time’ fashion, with nothing 

arriving more than three days in advance of its 

installation. 

The success of this approach rested on 

punctuality, constant communication and 

adherence to set procedures. 

Due to the combination of a restrictive site and a 

complex design brief, BEMO and Prater worked 

together to construct two offsite mock-ups prior to 

work starting onsite. Not only did this improve the 

understanding of the complexities of the system, 

as well as its installation process and how long 

that would take, but it also allowed the architect 

and AELTC representative to view the proposal. 

Having seen the proposal in a physical form, 

AELTC were able to approve the product – both its 

design and, equally as important, its colour. 

Working on such an iconic building, the team had 

to include the famous Wimbledon green within 

the design for site consistency, ensuring that the 

new roof system blended harmoniously into the 

existing structure. 

Contact BEMO 

www.bemoprojectengineeringuk.co.uk 

@BEMOsystems 


SEE US AT

Roofing Updates 

ART DECO GEM’S ROOF REPAIRED 

The roof of an occupied 1930s art deco municipal office building, situated in the busy town centre of 

Blackpool, Lancashire, required urgent repair. 

The building was experiencing standing water on a largely zero falls roof with only four drainage outlets, 

meaning water had started to leak into the occupied offices below. Kemper System’s Stratex Warm Roof 

system using its Kemperol V210 was specified for the 1,200m² roof area – offering exceptional 

performance and supplied as a complete integrated system of matched components. 

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

The Kemperol V210 is a polyester-based resin, applied wet-on-wet that forms a permanently elastic, This project has been shortlisted for the Liquid Roofing and 

Waterproofing Awards due to the complexity of the roof. 

seamless, yet highly durable waterproofing membrane. The roof was extremely complex with detailing 

around air-conditioning units, raised steelwork and cable trays in close proximity. Contractors also removed and replaced eight rooflights and boxed-in others 

that were no longer required. All existing steel work on the roof was treated and encapsulated with plywood and waterproofed with Kemperol to ensure 

additional life span. Stuart Hicks at Kemper System added: “Despite the challenges faced by Castle Contractors, the project was completed ahead of schedule 

thanks to the quick and easy application of the Stratex Warm Roof system and our Kemperol V210 liquid waterproofing system.” www.kempersystem.co.uk 

WIDE SOFFIT IS WOODGRAINED 

Freefoam Building Products has announced the addition of four woodgrain finishes to its 

Wide 605mm Soffit Range. 

The wide General Purpose Board is becoming a popular choice on many contemporary house 

styles, and has been added to the range as part of Freefoam’s continuing support of our 

customers servicing the Housebuilder. 

Available in a choice of Rosewood, Light Oak, Black Ash and Anthracite Grey the woodgrain finish 

allows for a fully coordinated roofline. www.freefoam.com 

CPD MEETS MODERN DEMANDS 

Sika Sarnafil has launched a new RIBA accredited Continual Professional Development (CPD) 

seminar, ‘Selecting Flat Roofing System to Meet Modern Demands’, for those wanting to 

specify high performance flat roofing that meets the most up-to-date legislative requirements. 

Visit: https://gbr.sarnafil.sika.com/en/newbuilds/contact/request-a-cpd.html 

to attend a seminar 

Richard Lawton, Regional Sales Manager – South, Sika Sarnafil, said: “Attending this CPD aids the 

decision-making process when choosing the perfect roof for a project. Just one hour spent provides 

peace of mind, as attendees can expect to leave the seminar feeling confident in selecting and 

specifying the right flat roofing system, while meeting the appropriate standards and regulations.” 

SLATES BRING FOSSILS TO LIFE 

Cembrit Glendyne natural slate has brought the home of fossils to life, by adding 

distinctive style, character, and impressive performance to The Etches Collection museum 

roof in Kimmeridge. 

Glendyne slates were used at The Etches Collection museum and 

are tested to BS EN European standard, BS EN 12326-1:2014. 

Janie Price, from Kennedy O’Callaghan Architects, commented: “Glendyne slates, together with 

Haysom Purbeck Stone, have successfully blended the museum into the surrounding traditional 

cottages. The slates allow the design to fit the traditional vernacular whilst its detailing is 

contemporary.” www.cembrit.co.uk 


DRESSED FOR SUMMER SUCCESS 

The onset of summer and warmer weather calls for a change of focus on what you choose to wear on site. 

From keeping warm and dry in winter, warmer weather brings with it a need for professional craftsmen and women to 

be cool and dry - to maintain well-being and working efficiency. 

That’s why Snickers’ new working clothes for the summer use 37.5 fabric technology which is really good at ‘wicking’ 

moisture away from the body and keeping you dry. 

In the Snickers Workwear FLEXIWork, LITEWork and RUFFWork product families, there’s new shirts, shorts and work 

trousers that are super-light and quick-drying with advanced ventilation to keep you cool in the heat. 

They’ve all got superb, body-mapping designs for an amazing fit, outstanding functionality and long-lasting comfort – 

all day, every day. 

Checkout the website and download a digital catalogue at www.snickersworkwear.co.uk 

SAFETY IS KEE FOR TWININGS 

A combination of safety products from Kee Systems have been installed at the Twinings 

facility in Andover to provide a first-class edge protection solution for staff members 

accessing the rooftop. 

Kee safety systems have been independently tested & CE 

approved to BS EN 14122-4. 

Having reviewed the site and the requirements, Kee Systems supplied and installed 320m of 

KeeGuard systems to provide roof edge protection, four access platforms for safe access, eight 

Kee Gates, 50m of Kee Klamp tubular fittings to offer a railing system, and five access ladders 

to provide for safe access while working at height. www.keesystems.com 

FLUSH FIT AT HOSPITAL PROJECT 

Alumasc Rainwater, part of Alumasc Water Management Solutions (AWMS), was specified 

as part of phase one of a £48m project to redevelop the Royal Edinburgh Hospital. 

The Royal Edinburgh Hospital includes 185 mental health bedrooms 

and accommodates an adult acute mental health inpatient service. 

Alumasc’s aluminium Guardian security downpipes were the perfect match for this 

contemporary building. The range is purposely designed for high security environments and 

benefits from a sharp aesthetic look. The downpipe profiles are fitted flush to the wall with 

concealed bracketry and jointing that makes them vandal resistant and anti-climb. 

www.alumascrainwater.co.uk 

GUIDE REVEALS HIDDEN FIRE RISKS 

Icopal, a BMI Group company, has produced a six-page guide that explains the fire risks 

of flat roofing and how to mitigate them. Recent years have seen a string of serious fires 

which have occurred because roofing contractors weren’t aware of flammable elements 

on the roof. 

TorchSafe Detailing, Guidance Document for Reinforced Bitumen Waterproofing sets out when 

roofing membranes can be torch applied, and when they can’t. It also underlines the 

responsibilities of all those involved to ensure that a roof installation is safe. www.icopal.co.uk 


Hackitt Comment 

“INDUSTRY MUST START LIVING THE 

CULTURAL SHIFT THAT IS REQUIRED” 

So says the Hackitt Review; Roy Weghorst, Head of 

Regulatory Affairs – Fire, at Kingspan, gives his thoughts... 

In the March issue of Total Contractor, we 

looked at Dame Judith Hackitt’s Interim Report 

on the Independent Review of the Building 

Regulations and Fire Safety. Now that the final 

report has been published, we can see that what 

is being called for is what Dame Judith describes 

as “A radical overhaul to futureproof the system”. 

The review, “Building a Safer Future”, highlights 

the many failings that led to the Grenfell Tower 

tragedy last June and proposes a revolutionary 

approach looking at the entire process involved in 

the construction, refurbishment and maintenance 

of our buildings. It considers every aspect that 

could affect the safety and performance of a 

building throughout its whole life cycle, including 

quality of build and what happens once it is 

occupied, not just how it is designed or the 

materials it is made of. 

Crucially, the report emphasises the need to stop 

thinking in ‘silos’ and to think in terms of systems 

– from the integration between the different 

elements of each individual building, to who is 

responsible for the checks and balances and the 

‘golden thread’ of information that will ensure the 

continuation of its safety over its lifetime. It also 

recognises that prescriptive rules are not the 

answer to such a complex issue, particularly in 

an environment where materials and technology 

are evolving rapidly. 

To make sure that the system is indeed 

‘futureproof’, the new proposed framework is 

therefore outcomes-based, and must be delivered 

as a package – “an integrated systemic change 

not a shopping list of changes which can be 

picked out on a selective basis”. The terms 

‘outcomes’, ‘performance’ or ‘risk’ based 

approach are used throughout the report. What 

this means is that the regulations should focus 

on making it clear what the industry needs to 

achieve, rather than telling it how it must 

achieve it. 

There are lots of reasons to have an outcomesbased 

approach. It leaves room for innovation 

and consideration of other needs, such as energy 

efficiency. It recognises that what works well for 

one type of construction may be unsuitable for 

another. More importantly, it leads to the level of 

thought and responsibility that is needed 

throughout the whole supply chain to deliver truly 

safe buildings. 

Overview 

The recommendations are focused on multioccupancy 

higher risk residential buildings 

(HRRBs) that are ten storeys or more in height, 

but it is noted that the new framework would also 

benefit a wider range of buildings. 

A new regulatory framework is set out, together 

with clearly defined dutyholder roles, and a new 

Joint Competent Authority (JCA) to make sure that 

it is followed. The JCA would involve Local 

Authority Building Standards, fire and rescue 

authorities and the Health and Safety Executive. 

The framework is designed to simplify the 

requirements and at the same time make them 

more robust. It provides better oversight, clear 

lines of responsibility, incentives for good practice 

and real sanctions for poor practice. It also 

involves the most important people – those who 

will be living in the building – and provides them 

with greater reassurance and an effective way to 

raise any issues. 

There are nine key areas for reform that are 

Recommendation 5.1a: The construction sector and fire 

safety sector should demonstrate more effective leadership 

in relation to developing a responsible approach to delivering 

building safety and integrity. 

highlighted in the executive summary of the 

report and expanded upon in the ten chapters 

that follow. 

Outline of the recommendations: 

1. The Framework 

• New regulatory framework for HRRBs 

• New Joint Competent Authority (JCA) 

• Mandatory incident reporting mechanism for 

dutyholders. 

2. Improve the focus on building safety 

during design, construction and 

refurbishment 

• Rigorous and demanding dutyholder roles and 

responsibilities 

• Series of gateway points to strengthen 

regulatory oversight 

• Stronger change control process 


Note : Plywood Stoped Short 

To Ensure Linearlight Flex 

Can Be Slotted Through 

3mm Aluminium 

18 Plywood 

Wraped in Vasqueen DPC 

T-Section 

16mm Bar 

M10 Round 

Head Socket 

Screw BZP 

TITLE 

DESCRIPTION 

Is 

Noteest 

loaded weight = 1250kg (All loading weights and structural calculations to be checked by others) 

est weight of planter = 150kg 

Coordination With External Lighting 

To Be Reviewed With Phoenix 

Corners To Be Welded And Dressed 

Farrin 

Unless oth 

specified dim 

are in mill 

angles 

decimal dim 

± 2m 

Cappings - Copings - Fascias 

Soffits – Flashings - Bullnose 

Free Site Surveyed Measures 

01223 440044 info@lasermetals.co.uk www.lasermetals.co.uk

Hackitt Comment 

• Single, more streamlined regulatory route to 

oversee building standards 

• Rigorous enforcement powers 

changes after occupation 

• To be used by dutyholders to demonstrate the 

safety of the building throughout its life cycle. 

3. Improve the focus on building safety 

during occupation 

• Clear and identifiable dutyholder 

• Requirement for dutyholder to present a safety 

case to the JCA 

• Clearer rights and obligations for residents 

• Regulator (JCA) for the whole of the building in 

relation to fire and structural safety in occupation 

4. Giving residents a voice 

• Greater transparency of information on building 

safety 

• Involvement in decision making through 

resident associations / panels 

• No risk, independent route for residents to 

raise concerns 

5. Improved levels of competence 

• Overarching body to provide oversight of 

competence requirements 

• Industry led technical guidance with continuing 

Recommendation 4.1a: The dutyholder for a HRRB should 

have a statutory duty to proactively provide residents with a 

set of information that supports residents to understand the 

layers of protection in place to keep their building safe. 

oversight from government prescribed 

organisation 

• Simpler yet more comprehensive regulations 

and guidance 

6. More robust and transparent 

construction products regime 

• More effective testing regime with clearer 

labelling and product traceability 

• Periodic review process of test methods and 

range of standards 

• More effective market surveillance system 

7. Creating a golden thread of information 

• Digital records for new HRRBs, to include 

8. Tackling poor procurement practices 

• Make sure that high safety, low risk options are 

prioritised 

• Consideration of full life cycle cost 

9. Ensuring continuous improvement and 

best practice learning through 

membership of an international body. 

“‘A race to the bottom’ 

that has too often 

become the hallmark 

of our industry in 

recent years” 

A common sense approach 

What the Hackitt Review has revealed and 

addressed are the underlying issues that allowed 

an inappropriate system to be installed, together 

with the poor processes and lack of care that 

compounded the effects and led to such a tragic 

loss of life – a “race to the bottom” that has too 

often become the hallmark of our industry in 

recent years. 

The debate will no doubt continue for many more 

months as we move towards actual regulatory 

change, “…in the meantime” Dame Judith writes 

“industry must start living the cultural shift that 

is required”. In much the same way as the 

familiar Construction (Design and Management) 

Regulations drove a cultural change that 

dramatically improved health and safety on site, 

the proposals outlined in “Building a Safer 

Future” should result in buildings that are safer, 

higher performing and better for all, throughout 

their whole life. 

Recommendation 7.1a: A clearer, more transparent and more effective specification and testing regime of construction 

products must be developed. This should include products as they are put together as part of a system. 

Contact Kingspan Insulated Panels: 

01352 717 251 

www.kingspanpanels.co.uk 

@KingspanIP_UK 


How To: 

ADDRESS AIR LEAKAGE 

By The A. Proctor Group. 

The Problem: About half of all heat loss in homes is due to air leakage. While adding more 

insulation should in theory improve the thermal performance of a building, the benefits of thicker 

insulation may not be fully realised if the structure’s airtightness is not also addressed. Tests 

confirm that air leakage can reduce the effectiveness of insulation by up to 70% because cracks, gaps 

and holes in the building envelope allows air to bypass thermal insulation. Energy efficient heating 

systems will also be rendered less effective if warmed air simply escapes through a draughty structure 

and cold air is allowed to flow in. 

Wraptite was used at the Portsmouth One project. 

Our Solution: One way to address this issue is to 

install Wraptite, which is a self-adhering solution 

that provides airtightness, vapour permeability 

and water resistance to the building envelope 

quickly and easily. One of its key benefits is that 

Wraptite is installed externally which saves on 

material and labour costs due to its fast 

installation and simple detailing method 

compared to internal air barriers. Providing 

exterior protection to your project earlier in the 

construction process means work on the inside 

can also begin sooner. Wraptite Membrane and 

the range of Wraptite Accessories are robust 

materials that will permanently adhere to almost 

any substrate. This makes Wraptite a flexible and 

simple solution for achieving airtightness on both 

on-site and off-site projects. 

A step-by-step guide to installing Wraptite: 

1. Wraptite Membrane can 

be installed 

horizontally – 2-person 

method (see right) or 

vertically – 1-person 

method (see right, below) 

a) Pre-cut the membrane 

to the required length 

then re-roll with the 

release paper facing 

outwards. 

b) Starting in a corner and using a chalk line for 

guidance, peel back the release paper and apply 

the adhesive surface to the prepared substrate. 

c) Using a hand roller or stiff brush, smooth out 

any air bubbles, releasing the air by starting from 

the middle and working your way towards the 

edges. 

2. Wraptite Tape, Corners and Liquid Flashing can 

be used for sealing gaps between rigid insulation 

panels, and detailing around penetrations, 

windows and doors. 

a) Tape should be pre-cut before removing the 

release liner and the adhesive side handled as 

little as possible. Split Liner options are available 

for Wraptite Tape to make this easier (see below). 

b) Fill gaps around door and window frames with 

Wraptite Liquid Flashing and allow to cure (see 

below), then finish with Wraptite Corners and 

Tape (top, next column). 

c) Gaps around wall penetrations that are greater 

than 6mm are prefilled with 

Wraptite Liquid 

Flashing and 

allowed to cure 

(see right), then, 

after the Wraptite 

Membrane has been 

installed, a second layer of 

Liquid Flashing is 

applied to seal 

between the 

membrane and the 

penetration 

(see right). 

*The guidance provided here 

has been summarised. Please consult The A. Proctor Group 

website for complete installation advice. 

Contact The A. Proctor Group 

01250 872 261 

www.proctorgroup.com 

@proctorgroup 

Left and above: finish with 

Wraptite Corners and Tape. 

“Wraptite is installed 

externally which saves 

on material and labour 

costs” 


YEARS

Cladding Updates 

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

WRAPTITE TAKES CARE OF BUSINESS 

The impressive performance of Wraptite Tape, which provides a vapour permeable air barrier has been 

successfully used on a new care home in the historic city of Edinburgh. 

The Queensferry Care Home project comprises 60 en-suite bedrooms for the elderly with associated facilities and 

parking, on behalf of client Barchester Healthcare. The design and build partner is Yeoman McAllister architects in 

conjunction with main contractor McLaughlin and Harvey. 

Wraptite Tape was selected by specialist construction company Veitchi Group who carried out the installation of the 

steel structure for the new building. Metsec Metframe, a pre panelised lightweight steel structure was built off-site and pre-clad with rigid insulation board. 

Wraptite Tape was installed as a superior solution to seal the joints on the rigid insulation board within the steel frame. 

Colin Kennedy, Managing Director of Veitchi Interiors, commented: “We have specified Wraptite Tape on our project because it has proven to be vastly superior 

in performance and its ease of application compared to traditional aluminium coated Butyl adhesive tapes, used to seal joints, openings and penetrations.” 

www.proctorgroup.com/air-barriers 

COMPLEMENTING COLOURS 

Freefoam Building Products has showcased Dark Grey Fascia at a new Morris Homes 

site in Leicester. 

The Glebelands Park development features a collection 

of detached and semi-detached 3, 4 and 5 bedroom 

properties. 

Morris Homes selected Dark Grey fascia to perfectly complement the grey window frames, 

juliet balconies and garage doors to achieve a coordinated, contemporary look. Phil Shaw, 

Procurement Manager, said: “We’re often driven by planning guidelines and pride ourselves on 

being able to offer Local Authorities a ‘non-standard’ look that will enhance the local area. One 

of the ways we achieve this is by using colour instead of white.” www.freefoam.com 

PRATER SET TO DELIVER 

Prater is to deliver an extensive scope of works for 100 Liverpool Street – a mixed 

development scheme adjacent to Liverpool Street Station. 

Prater has been appointed to the high profile project and has worked alongside main contractor Sir 

Robert McAlpine to design the roofing and cladding package. Prater will also be responsible for the 

installation of Kingspan composite cladding to the high-level lift cores as well as a hot melt roofing 

package utilising Radmat PermaQuick with a mixture of Radmat Protherm G and Quantum 

insulations. www.prater.co.uk 

A CLEAR PASS FOR STUDENT PROJECT 

The superior performance benefits of the Wraptite external air barrier system from A. Proctor Group have been 

highlighted in a new flagship project to deliver student accommodation in the centre of Portsmouth. 

The Wraptite external air 

barrier system was used 

at Portsmouth One. 

ECE Westworks were appointed to design a new 23 storey, 576 bed student accommodation scheme, Portsmouth One, on behalf of 

Crown Student Living with main contractor Osborne. Facades contractor Fabrite engaged Facade Materials Specialist InOpera 

Facades to provide guidance and design the support structure behind the rainscreen cladding. Providing detailed assessments in 

accordance with BS EN 10211 and BRE 443 Conventions for U-values, InOpera were able to model the performance benefits 

offered by the total through wall cladding system incorporating the Wraptite air barrier. www.proctorgroup.com 


SEE US AT 

Protective 

casing 

Wraptite ® 

Wraptite, a strong robust external air barrier designed to keep buildings airtight 

and dry. Easy to install, it combines the best properties of a vapour permeable 

membrane and an airtight membrane in one affordable, self-adhering product. 

Ladybird - Their bright colouring is used as a defence mechanism and 

their antennae and eyes can be drawn back into the pronotum: 

a protective casing. 

Get in touch to find out more about Wraptite 

☎ 01250 872 261 ✉ contact@proctorgroup.com 

14/5153 

www.proctorgroup.com 

Group

Tapered Projects 

A GUIDE TO TAPERED INSULATION 

By James Wilkinson (pic), Design Team Leader at Gradient. 

Tapered insulation is essential for adequate 

falls provision in new and existing flat roof 

installations. It helps prevent issues such 

as ponding which if left untreated, could 

undermine the roof’s long-term performance and 

cause damage to the building it was designed to 

protect. A quality flat roof installation depends on 

correct specification and expert application of 

materials including the insulation. The following 

guide will hopefully ensure your flat roofing 

project’s smooth success. 

Good positioning 

As insulation designers and manufacturers, we 

need to know the extent of tapered insulation 

required and proposed drainage positions in order to 

design the most effective tapered scheme. Without 

this, you could be opening yourself up to a 

magnitude of revisions which in turn causes delays. 

Know the value 

In order to achieve the thermal requirements, we 

need to be aware of the U-value the roof has to 

achieve. Often, projects are submitted without 

this vital detail. For reference, 2013 Part L 

Building Regulations for England state a newbuild 

domestic flat roof should achieve a U-value 

of 0.11; flat roof extensions and refurbishments 

should achieve 0.18. For non-domestic new 

buildings, flat roofs should achieve a U-value of 

0.14. For non-domestic flat roof extensions and 

refurbishments a U-value of 0.18 is required. 

Match fit 

A J42 specification should contain the roof’s 

waterproofing details. This will dictate which 

materials will form the tapered insulation 

scheme. As part of its extensive insulation range, 

Gradient manufactures panels compatible with 

various waterproofing systems including torchon, 

adhered single ply and mechanically-fixed 

applications. It’s a case of ‘horses for courses’ 

and ensuring the right 

waterproofing system is 

specified with the correct 

insulation. 

No compromise 

Low roof details such as 

balconies, terraces, windows and 

doors can affect the falls proposed and the 

thermal performance that can be achieved. These 

features will require waterproofing, therefore it’s 

important to know if the roof contains any height 

restrictions. Even low levels of parapet height can 

be overcome using Gradient’s ultra-thin VIPs 

(vacuum insulated panels). Compromising the 

amount of height required for detailing the 

waterproofing to avoid exceeding any height 

restriction isn’t advisable as this will negate the 

watertightness. 

Access pointers 

Doing your homework on the roof installation site 

will also pay dividends. It could help with the 

project‘s cost effectiveness, if, for example, 

there’s access for an articulated lorry to bring 

materials to site. One large vehicle is more 

practical, cheaper and time efficient than 

arranging three smaller ones to carry out the 

same job. 

What’s in store? 

As well as being mindful of a site’s vehicular 

access, it’s important to know how much storage 

space it possesses. For example, a building with 

a 10,000m² roof probably won’t have room on 

site to store the equivalent amount of material. 

Materials stored without protection on site are 

likely to be damaged if left at the mercy of the 

elements. Therefore, if storage space is limited 

the roof’s installation can be planned in stages to 

eliminate stockpiling issues. 

See a specialist 

Engaging with a proven flat roof 

insulation specialist is 

essential to a successful 

build. At Gradient, our 

surveyors are not only available 

throughout a project to offer all 

manner of help including site visits, 

their expertise is on offer pre and postinstallation. 

For instance, if a client is unsure of 

what their roofing requirements are, our team can 

provide options relating to cost, U-value 

calculations and also arrange for a condensation 

risk assessment to be carried out. We believe this 

service offers clients total peace of mind that, 

however challenging the project, they have 

Gradient’s technical team’s experience and 

know-how at their disposal at all times. 

Special bond 

Roofing insulation specialists who manufacture 

factory-bonded, single-layer panel systems can 

also aid a project’s success. Our single-layer 

boarding can be bonded to a thickness of 

530mm. This solitary system not only saves onsite 

installation times, the tighter bond 

guarantees the insulation’s quality as it doesn’t 

comprise a number of multi-width boards. 

As with any building project, good planning is key. 

However, no architect, contractor or roof installer 

is immune to oversight, regardless of experience. 

Hopefully the above guidance will serve as a 

useful reference point for those embarking on 

their next roofing project. For a headline 

installation, it’s always good to check the small 

print first. 

Contact Gradient 

01543 678777 

www.gradientuk.com 

@Gradient_UK 


QUALITY 

YOU CAN TRUST 

The Weightanka® mobile man anchor provides 

the complete solution for short term safety and 

low frequency operations and is designed for 

use on roofs with up to a 5° pitch. 

The system conforms to EN 795 Class, is quick 

and easy to assemble and weighs just 250kg. 

By using smaller components and with no single 

item weighing more than 25kg, Weightanka® 

is easy to lift and carry to and from the point 

of use. Suitable for use on all roof surfaces, 

Weightanka® provides fall protection for a single 

worker and fall restraint for two people when 

working at least 500mm away from a fall hazard. 

Features and Benefits: 

• Short term safety for low frequency work 

• Does not penetrate the roof membrane 

• Suitable for use on various roof types 

• Can be used on roofs up to 5° pitch 

• Compact design for ease of transportation 

• Quick and easy to assemble 

• Complies with current regulations, 

including BS EN 795. 

www.safesite.co.uk 

Tel: 01293 529977 

Email: info@safesite.co.uk

External Wall Insulation 

TEN REASONS TO USE EWI 

By Ben Warren, Managing Director at Baumit. 

Clearly, external wall insulation (EWI) has many positives; however, the fruits of these benefits are 

often overshadowed by EWI’s myths and misconceptions. To remove any grey areas, here are my 

ten reasons why EWI is a thermal and financial necessity, offering safety, comfort and efficiency 

for your project... 

“Effective and efficient 

EWI installations 

ensure safety is not 

compromised” 

1. The commercial argument 

EWI can provide cost-effective solutions for 

people who need to save on space. For instance, 

if a room is 5m2, a decent level of internal wall 

insulation would require a minimum build-up of 

15cm. This would cause a 6% reduction in floor 

area, which might not seem a huge amount, but 

could equate to a significant loss in residential 

buildings containing several properties. Loss of 

floor space equals loss of income for the landlord, 

therefore in these cases there’s a commercial 

argument for choosing external wall insulation. 

2. Prevent condensation 

EWI removes the dew-point – the temperature 

below which water droplets condense from the 

inside of a building to prevent condensation 

forming. Baumit openSystem provides an 

example of an EWI system that liberates moisture 

and retains airtightness. Its perforated Expanded 

Polystyrene (EPS) façade insulation boards 

ensure high vapour permeability, resulting in the 

release rather than the entrapment of water 

vapour. 

3. Colour flexibility 

EWI installations have to be aesthetically pleasing 

as well as practical. In light of recent colour 

technology, we have developed an entire 

spectrum of colour palettes to meet design needs. 

Plus, all colours are completely resilient to all 

weather conditions, meaning your exterior will be 

striking and efficient in equal measure. 

4. Weather protection 

EWI installations offer considerable protection for 

the building, with topcoats designed to make 

external walls completely resilient to both hot and 

inclement weather conditions. Our EWI systems, 

including ‘Cool pigments’ render topcoats and 

façade paints, act as a building’s shield. Both 

dark and light paints contain specific colour 

technologies which can cool a building in the 

summer, protecting it from exhaustive heat 

exposure. 

5. Longevity 

EWI installations are a huge investment, therefore 

it is important to find a solution that will 

guarantee longevity. I like to say EWI is like 

cruising in a beautiful car on a high-road without 

any interruption. Whilst boilers can break and 

leave you without heating, EWI is in it for the 

long-haul. 

6. Wellbeing for inhabitants 

Buildings are to be lived in and occupied by 

people, so comfort is a natural priority. Effective 

and efficient EWI installations ensure safety is 

not compromised. EWI installations usually 

constitute several components including; an 

insulation layer made up of mineral wool, primer 

to waterproof the system, a glass fibre to anchor 

the primer and finally a render finish. When 

combined, I believe all of these components 

provide the perfect solution to keep inhabitants 

happy and healthy. 

7. Optimum heat retention 

To prevent the loss of heat, EWI works in two 

ways. Firstly, it is designed to conduct heat so 

that it is locked into a building. Secondly, the 

majority of EWI systems contain slabs which use 

thousands of tiny air pockets to entrap the heat. 

Should any excess moisture arise, Baumit’s 

openSystem is designed to release moisture, 

preventing the development of any dreaded 

damp. 

8. Quick installation 

EWI is a perfect solution for older buildings 

without cavity walls, as the insulation can simply 

be injected in the free space. Many modern 

properties are built with cavity walls. However, 

more specialist treatment is often required for 

certain exteriors. Although installation times are 

relative to a building’s size, EWI systems can be 

applied speedily within five-to-seven days, 

minimising the disruption to inhabitants. 

9. Energy saving 

EWI installations can save energy costs due to 

supreme ability to optimise heat retention. EWI 

technology is designed to offer thermal energyefficiency, 

locking in heat as opposed to releasing 

it. Investing in a tighter, high-performing EWI 

system will reduce an occupier’s heating costs – 

a real win-win situation. 

10. Versatility 

Taking all of these points into consideration, I 

believe EWI is a versatile, efficient and costeffective 

system for any building, no matter the 

scope. Offering both practical and design 

versatility, EWI improves the aesthetics on the 

outside and the building’s thermal performance, 

ensuring a building delivers both in terms of the 

external appearance and the internal safety for its 

occupants. 

Contact Baumit 

01622 710763 

www.baumit.co.uk 

@BaumitUKLtd 


We’re opening new doors 

Easy-Trim are a vertically integrated company at the forefront of innovation, with a forward 

thinking attitude and solid business strategy we are well on track for continued growth within 

the rapid moving industry that is roofing and construction. 

We are investing heavily to into the future of Easy-Trim, most recently work began on the expansion of our premises, doubling our 

existing space and increasing our manufacturing capabilities. More exciting additions include new Mercedes Actros Big Space 

vehicles which have now joined our delivery fleet. Our recent acquisitions, including the addition of Easy-Trim Roto windows to our 

portfolio, expansion and continued growth is extremely positive in an ever competitive industry. 

Easy-Trim...the future of British Manufacturing 

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Insulation Updates 

CLT CPD LAUNCHED 

Ecological Building Systems has developed a new CPD presentation aimed at highlighting the 

benefits of using CLT (cross-laminated timber) and woodfibre insulation in unison to maximise the 

performance of CLT schemes. 

Showcasing case studies of timber-based construction projects in the UK including The Woodland Trust’s 

headquarters in Grantham, The Steiner School in Frome and the headquarters of furniture company Vitsoe 

(pic). The CPD demonstrates to architects, specifiers and contractors that CLT is a viable alternative to 

concrete, masonry or steel on a huge variety of construction projects. It discusses the ease and speed of Vitsœ, Royal Leamington Spa ©Dirk Lindner 

build, thermal performance, fire resistance and sustainability benefits of using CLT and woodfibre insulation in combination. 

Fintan Wallace from Ecological Building Systems said: “CLT has been proven as a durable, environmentally-sound and cost effective construction material suitable 

for the delivery of rapid and economically prudent projects across a wide range of sectors, from private homes and residential tower blocks, to offices and schools. 

“This CPD aims to share our experience of optimising the performance and flexibility of CLT by demonstrating how it fits with our range of environmentally 

appropriate and effective range of insulation and air tightness solutions.” www.ecologicalbuildingsystems.com 

TIME WASTED CLEANING UP BEFORE WORKING 

Research by Heat Insulation, a company offering grant-backed home insulation, suggests that the majority of tradespeople are wasting more than 30 

minutes every day making their work area in customer homes accessible by effectively tidying up; and this is all before commencing work. 

Ricky Swann, Managing Director of Heat Insulation, conducted the survey as he often hears from fellow tradesmen how annoyed they are at effectively 

wasting their time doing cleaning work. He had this to say: “I’ve personally fallen victim to it a few times and I decided to start a little side project to 

understand how much time is wasted by tradespeople who I work with across the country for their opinion. We can all appreciate that we are sometimes 

performing emergency work or going into a space that isn’t often visited, such as the loft, but that shouldn’t really be an excuse. Homeowners could save 

money by preparing a workspace beforehand.” 

SALES STRENGTHENED 

RAVATHERM UK has strengthened its sales team with the appointment of a new Business 

Development Manager for the West. 

Philip Hodges joins from distributor SIG and brings more than 30 years’ experience of the 

construction industry to the POLYFOAM XPS insulation manufacturer. Speaking about his 

appointment, Philip said: “This is an exciting opportunity to boost both the profile of 

RAVATHERM UK and POLYFOAM XPS in a region where we see significant opportunities to grow 

the business.” www.ravatherm.co.uk 

BBA SHOWS TESTING FACILITY CAPABILITIES 

Business leaders from Crest Nicholson and the NHBC were given an insight into the rigorous and highly technical construction products testing 

carried out by the British Board of Agrément (BBA) during a visit to its test facility in Watford, Hertfordshire. 

The visit gave both organisations a deeper insight in to how UKAS-accredited BBA tests products and systems for safety and quality before they are 

certified. Housebuilder Crest Nicholson, which is completing the new-build housing development Lancaster Grange in nearby Bricket Wood, was the first 

commercial contractor to be invited for a tour of the BBA’s hi-spec test facility. Crest Nicholson is currently installing insulation systems in the Lancaster 

Grange properties so showed particular interest in the BBA’s ETAG 004 hygrothermal chamber, which applies heat/rain and heat/cold cycling procedures 

to ensure thermal insulation materials are safe and fit-for-purpose. 


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The Apex 

ACCREDITATION’S WHAT WE NEED 

Everyone from planners and regulators, to architects, contractors, roofers and builders 

knows the importance of implementing a robust quality assurance system. Here, to mark 

World Accreditation Day, Jackie Biswell, Managing Director of Apex Roofing, looks at how a 

roofing accreditation could deliver confidence of best practice in the sector. 

Sir Frances Bacon is famously credited for 

the proverb ‘knowledge is power’ – a 

statement that highlights the importance 

of learning and developing new skills to stay 

ahead of the competition. 

It can also be applied to the importance of 

working with experienced individuals – those who 

have been rigorously assessed on their 

capabilities, commitment and knowledge. 

This is why it is so important for the roofing 

industry to have an accreditation; a formal 

recognition by an authoritative body of the 

competence to work to specified standards. 

“Nearly every aspect of 

the construction 

process can be 

accredited and all of 

the key stakeholders 

can benefit” 

Why it works 

Nearly every aspect of the construction process 

can be accredited and all of the key stakeholders 

can benefit. 

Accreditation gives companies confidence that 

products and raw materials are safe and meet 

specifications. 

For manufacturers, accreditation helps limit 

product failure. 

The owners and operators of buildings can help to 

discharge their legal duties by using accredited 

companies to monitor the safety of the built 

environment. 

Consumers benefit too, as accreditation helps 

boost confidence in the safety of buildings and 

infrastructure. 

In short, having some kind of certification ensures 

safer, cleaner and smarter construction by 

helping to control risk, demonstrate compliance 

and provide quality assurance. 

It also helps drive efficiency and the adoption of 

best practices, reducing costs and easing the 

financial pressures for everyone concerned. 

What’s on the horizon 

We are not the only company who is championing 

this concept for our industry. 

In fact, on a much wider platform, the National 

Federation of Roofing Contractors (NFRC) and 

the Construction Industry Training Board (CITB) 

have collaborated to put together such an 

accreditation for our sector which aims to 

improve efficiency, upskill the workforce, 

encourage the use of new technology and attract 

new talent. 

The latter is particularly relevant in today’s 

climate where a lost generation of construction 

specialists is causing a vast skills gap in all 

areas of the building sector. 

After all, when the recession hit, construction 

contracted by 16.5% in just three years and more 

than 350,000 tradesmen and women lost their 

jobs. 

In response, the industry cut back on training and 

stopped offering apprenticeships. 

Jackie Biswell, Apex Roofing 

And then things started to improve. 

The sector began to recover, the Government 

introduced plans for new housing, the Help to Buy 

scheme was launched and mortgages were easier 

to come by. 

Suddenly there was plenty of work – but nobody 

to do it. 

Getting young people into the sector 

The shortage of new blood entering the industry is 

coupled with its poor perception. “Builder” and 

“roofer” are the only professions to routinely have 

the word “cowboy” attached to them – an 

affront to the thousands of capable, committed, 

talented people delivering complex building 

projects in the UK and around the World. 

But painful as it may be to have to defend the 

stereotypes, we must address them if we are to 

make UK construction sector a fit career 

destination for today’s talent. 

We need to be doing more to encourage women 

into the industry. More to showcase the vast 

range of career options available; more to 

modernize; and more to build skills for the future. 

And to do this – particularly in the roofing sector 


“We believe professional 

accreditation will not only improve 

career prospects but also increases 

technical credibility for the 

employer, which ultimately brings 

benefits to the customer” 

– contractors have to have the support they need to operate efficiently and 

confidently as recognised professionals. 

This will be managed through the accreditation process. 

As Mark Noonan, Industry Relations Director of the CITB points out, working 

in partnership will “ensure that employers and clients benefit from an 

accredited workforce” and that “the scheme benefits would be supported 

across all specialist federations, professional training providers and other 

relevant stakeholders.” 

This is backed up by Jon Vanstone, Chair of the Competent Person Forum and 

Trade Association Forum who will direct the programme of delivery for the 

accreditation. 

He said: “With engagement across the board it could change the perception 

of a career in roofing and encourage more people into the sector. 

“It could also mean that we are not just actively recruiting but we are 

recruiting individuals who know what they are doing.” 

Taking the first steps 

Apex Roofing hopes to be one of the first companies to follow the 

accreditation scheme which sets out to create 5,000 accredited roofers in a 

four-year period. 

We believe professional accreditation will not only improve career prospects 

but also increases technical credibility for the employer, which ultimately 

brings benefits to the customer. 

All our roofing clients can be confident that the work delivered is of the 

highest quality and that work is completed ethically and sustainably. 

We believe with this in place, knowledge is most certainly power. 

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However, this knowledge needs to be continually developed, built on and shared. 

And accreditation will place this at the forefront – helping us future-proof our 

industry with a new generation of roofers. 

Contact Apex Roofing 

01502 537129 

www.apexroofinguk.com 

@ApexAnglia 


Company Van Tax 

HOW TO AVOID TAXING TIMES FOR 

YOU AND YOUR ‘COMPANY VAN’ 

How often do you use your company van and for what purpose? It will have a big impact on 

the tax you – should – be paying. In our regular vehicles focus, we take a look at some of 

the different scenarios to look out for regarding company van tax. 

So, you have a ‘company’ van. You clearly 

use it for work and business purposes 

and it’s also on your drive at home. But 

there’s a question that’s going to bother HMRC 

more than it’s going bother you until it’s too 

late – should you pay tax on the company van? 

The answer is more than likely… yes. 

What is a van? 

For HMRC’s purposes, a van is defined as “a 

vehicle of a construction primarily suited for the 

conveyance of goods or burden of any description 

(not including people)” with a design weight 

(when in normal use and travelling on a road 

loaded) not exceeding 3,500 kilograms. A double 

cab pickup may be classified as a car or a van 

depending on its VAT classification while 

(mini)buses etc. are not vans because they are 

primarily designed to carry people. 

The law is blunt 

As the law is written, you are liable to pay tax on 

all “significant” private usage of a van – in other 

words, for journeys that you make for your own 

private benefit including regular shopping trips, 

for holidays, the distance to get to and from the 

likes of IKEA, or just general social activity. 

While physically there’s nothing stopping you 

making the trips – assuming the van is taxed, 

MOT’d and insured – unless tax is declared and 

paid, HMRC is going to take a very dim view of 

the matter should it find out. 

By definition, you do not have to pay tax on any 

journeys which are considered to be “insignificant 

private use” – that is, the odd or very rare trip 

which is not regular (such as journeys that are 

brief and very occasional). 

These might be a trip to the tip a couple of times 

a year; making daily, but short, detours to get a 

paper and lunch on the way to work; or stopping 

off at the doctor on the way home. 

Infrequent as they are, HMRC does conduct 

regular audits on firms nationwide to check on 

private usage of vehicles. And so, if this happens, 


how will you prove a trip in the company van was 

insignificant? Sadly, it’s going to boil down to 

what appears in the taxman’s manual and what 

your company can prove – your personal 

situation or perspective is unlikely to be taken 

into account. 

As for how HMRC undertakes its compliance 

checks, they’re mostly down to common sense. 

Tax inspectors have been known to check vehicle 

registration numbers they find in supermarket car 

parks – especially at night, on weekends and 

bank holidays. From there it’s just a question of a 

simple search of the DVLA computer to see who 

owns and is the registered keeper of the van. The 

next stage in the discovery process means 

checking the HMRC computer to confirm the 

owner or keeper is a company and whether or not 

any company van benefits have been declared on 

employees’ P11Ds. If not, HMRC will then 

conduct an Employer Compliance Audit – and 

that’s where the problems start. 

Taking steps to protect your position 

Not unsurprisingly, HMRC’s taxmen will want you 

to prove that your company van is not being used 

for significant private use. They’ll also want to 

see that the company has put in place measures 

to prevent significant private use unless that 

private use has been declared (and tax paid). 

This might mean checking company policies, 

seeing if employees are made to sign off on 

policies while noting down business mileage and 

so on. 

Indeed, it’s for these reasons that you may have 

been told – despite that it looks like you’re being 

spied upon – to note down every journey made in 

the van, because by doing this both you and the 

company will avoid any tax tied to the use of 

company vans or company fuel. Similarly, it’s 

also the reason why you may be told to pay for 

private use of fuel. 

While ordinary commuting from home to a job is 

allowable, it’s still important to be accurate with 

record keeping. We’re all busy but estimating 

journey distances can get you and the company 

into trouble with fines. 

As to what to put into a mileage log, it needs to 

record the van, driver, date, start and end of the 

journey, stops made, start and end of daily 

mileage – and importantly – the number of 

business miles covered. 

Van policy 

The company van policy is very important. It’s an 

employer’s ‘get out of jail free’ card. It should be 

a clear and well written document that outlines 

permitted uses of the van and specifically what 

private use is allowed. The company needs to 

keep the document updated and you should have 

been given it to read before taking a van out. You 

may have been asked to sign a document noting 

that you’ve read the policy. Don’t ignore it – if the 

company can show that it’s done what is required 

of it it’ll be you that’ll be left holding the tax baby. 

Tax to be paid 

To the nitty gritty of the tax regime. If there is 

private use you – no matter if you’re an employee 

or director of the company – will have to pay 

income tax on the company van. There is an 

additional tax charge where fuel is provided for 

private use. On top of that, the company providing 

the benefit pays Class 1A national insurance 

contributions at 13.8% on the value of the benefit 

and must tell HMRC of the benefit via a form 

P11D. 

As to how much you’ll pay, the tax charge is your 

rate of tax multiplied by the benefit that HMRC 

sets for the year in question. 

For the tax year 2017/18 the van benefit was 

£3,230 while the van fuel benefit was £610. This 

means anyone on a 20% tax rate would have 

paid £646 tax for private use of the van and an 

additional £122 for private use of company fuel. 

The rates for the current tax year – 2018/19 – 

are £3,350 for the van benefit and £633 for the 

private use of company fuel. Again, a 20% rate 

tax payer will pay £670 for using the van and 

£126.60 for using company fuel. 

“HMRC does conduct 

regular audits on firms 

nationwide to check on 

private usage of 

vehicles – how will you 

prove a trip in the 

company van was 

insignificant?” 

The company, as we’ve seen earlier, will have to 

pay Class 1A national insurance contributions at 

13.8% on the £3,983 value of the benefits – 

you’ll recall the £3,350 for the van and £633 for 

the fuel – a total of £549.65. However, it can set 

this charge against its tax bill. 

Zero emission vans 

For the eco-friendly company, there are tax 

savings for using zero emission vans. However, 

the government is losing too much revenue on 

this and so is gently phasing the discounted vans 

benefit charge out between now and the 2022/23 

tax year. 

The tax charge to be paid was 20% of the normal 

rate of tax on the van between the 2015/16 and 

2017/18 tax years. It’s now 40% of the standard 

charge for 2018/19 but will rise to 60% in 

2019/20, 80% in 2020/21, 90% in 2021/22 and 

will be the full 100% of the standard tax charge 

from 2022/23. 

VAT and vans (and other 

commercial vehicles) 

Lastly, VAT is an unpleasant extra for most. But 

luckily, VAT on the purchase price may be 

reclaimed by a VAT registered business. However, 

when the van is later sold VAT must be charged 

on its sale. There is also VAT due on private use 

of company fuel. But that is a whole other story. 

Company Van Tax Calculator: 

https://www.commercialfleet.org/tools/van/vantax-calculator 

Government website (search for “vans”): gov.uk 


Bracknell’s View 

COLD CALLS: CALLBACKS TO SITE 

In the latest instalment of his contractor column, Simon Smith, of Bracknell Roofing, looks 

at the bugbear of roofing contractors: having to return to site to fix leaks and other problems 

which, in most cases, are nothing to do with the roofer’s workmanship... 

The cost of incorrectly allocated defect 

notifications on our business each year has 

a double whammy effect financially and in 

wasted time. The general perception seems to be 

if there’s a leak from above or a problem is 

reported at roof level, then it must be down to the 

roofer. This recurring theme continues regardless 

of how many times roofing contractors 

demonstrate otherwise. So why is this? 

Misinformation 

In my opinion, the internet and social media have 

a lot to answer for. These days the consumer is 

surrounded by online opportunities to ‘research’ a 

topic and there’s no shortage of would-be experts 

out there peddling their often inaccurate, 

subjective, self-opinionated ‘wares’ for the world 

to access. Misinformation like this can adversely 

affect the consumer’s approach to a complaint 

and their expected outcomes from it. 

Non-issues blown out of proportion 

Social media is like a digital grapevine. We’ve 

come across cases where a consumer is unhappy 

with their builder and subsequently broadcasts 

negative messages on social media to other 

residents, who then start to question things about 

their own property, causing a snowball effect. 

Consequently builders and sub-contractors like us 

end up dealing with non-issues blown out of all 

proportion, sometimes at financial or relationship 

cost, or on occasion both. 

Typical recall ‘issues’ 

The knock-on effect for sub-contractors like us 

working for quality builders is disproportionate 

and consumer complaints are often not fully 

validated before allocation to us. So, what typical 

recall issues do we encounter? 

We are sometimes called out to issues which 

should have been allocated to other contractors 

such as joiners, plumbers and follow-on trades 

like solar PV fitters and aerial installers. Whilst far 

from an exhaustive list, issues include: broken 

roof tiles or slates; dislodged dry-verge starters; 

damage by other trades dealing with their own 

defect recalls, bathroom extractors not connected 

to vents and badly maintained roof drainage 

systems. But there are other factors such as out 

of sequence working and products. 

Less haste 

Builders are sometimes keen to get the roof on as 

quickly as possible – to get it dry so that other 

trades can start on the internal works – but, in 

some cases, it can mean that vital preceding 

works like roofline, brick work and joinery work 

are not always ready, and the resultant effect can 

compromise roof installation. Some modern 

construction methods such as timber frame and 

SIP panel systems can also have a similar effect. 

Delivery problems 

Manufacturers and suppliers failing to deliver key 

components like ridge block-ends and vent tiles 

with the roof tiles causes re-visits and increased 

margin for error, sometimes resulting in products 

not being entirely fitted to the letter of the 

manufacturer’s instructions. Issues like excessive 

breakage of roof tiles during installation has a 

similar effect. Also, some system components 

such as dry verge starters could be better in 

terms of design and robustness. 

Whys and wherefores overlooked 

Moving the clock forward a few years, if a 

consumer encounters a related issue with their 

roof, often the whys and wherefores get 

overlooked and the focus zones in on who is 

responsible for repairing or footing the bill, so it is 

imperative we get it right today both in terms of 

the work we do and when we do it. 

A contentious point 

A bone of contention on recalls is where building 

maintenance companies are used to investigate 

alleged defects. This is a contentious point but in 

my opinion there can be a basic conflict of 

interest here because it’s in their commercial 

interest to find faults – as both a revenue 

generator and to make themselves look good in 

the eyes of their clients. This is compounded by 

the fact that, in my opinion, they are not always 

necessarily qualified to accurately fault-find on 

roofs. These types of situations can cause a strain 

in client relationships 

That said, where the NHBC is concerned, the 

interaction with them on site during original 

installation is increasingly proactive and 

ultimately helpful to all parties. 

Health and safety 

A footnote to the fact that we get called out to fix 

problems is the perception that we can always 

make quick running repairs, often by popping up a 

ladder. This is absolutely not the case. We have 

very robust health and safety practices in place to 

ensure the safety of all of our roofers and the 

public at all times. Quick-fix, short-duration works 

present additional risks that we should be 

avoiding, rather than encouraging. 

Contact Bracknell Roofing 

08705 626800 

www.bracknellroofing.com 

@BracknellUK 


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