July 2018

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JULY <strong>2018</strong><br />

Asbestos Advice<br />

Asbestos Advice<br />

Contractor’s Q’s<br />

Tapered Talk<br />






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Editor’s Comment<br />




COVER PIC:<br />


A busy month at Total Contractor culminated in helping to judge<br />

the flat roofing element of the BMI Apprentice of the Year Awards.<br />

The two-day event, which now sees an overall winner from both the<br />

Redland Pitched Roofing and Icopal Flat Roofing finalists, puts<br />

apprentices from across the UK through a number of assessments<br />

which takes them way out of their comfort zone by focussing not just<br />

on the practical side of roofing, but also the soft skills – interacting<br />

with customers and presenting themselves professionally. You can read<br />

about the winners on p.06, but as Kieran Forster, Icopal Apprentice of<br />

the Year for <strong>2018</strong>, told me: “Just being here has shown me I can push<br />

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

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

confidence which will help them in their careers. Look out for the full<br />

review of the event in the August issue of Total Contractor.<br />

Elsewhere in this issue, our new column from John Mercer looks at<br />

unintended consequences of improving roofing standards (p.20); Andy<br />

Rowlands talks difficult customers and tells us the most frustrating<br />

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

responds to claims in Which? magazine that roofers rank very low in<br />

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

her column on p.68. As Jackie explains: “We believe professional<br />

accreditation will not only improve career prospects but also increases<br />

technical credibility for the employer, which ultimately brings benefits<br />

to the customer,” and you can’t argue with that...<br />

Enjoy the issue,<br />

NEW<br />

A PRIC<br />


£T<br />

Matt<br />


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

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




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JULY <strong>2018</strong> TC 3

Contents<br />


36 ON THE UP<br />

Stephen Cleminson explains how to overcome<br />

upstand issues<br />


Mark Harris talks through his key<br />

considerations for installing green roofs<br />


Will the new retractable roof on Court No. 1 be<br />

needed at this year’s Wimbledon?<br />


Enjoy your FREE RUFUS van air freshener<br />

courtesy of Whitesales!<br />

48<br />



In a new, regular column, John Mercer looks at the<br />

unforeseen consequences of improving standards<br />

28<br />


Andy Rowlands is the first roofing contractor to answer<br />

Total Contractor’s questions in this new feature<br />

40 PIPE DREAMS<br />

How to prevent the performance of the roof you’re<br />

working on being compromised by a pipe penetration<br />


What do the findings of “Building a Safer Future”<br />

mean for roofing and construction?<br />


James Wilkinson outlines the key points to ensure the<br />

insulation aspect of your flat roof project runs smoothly<br />


Simon Smith looks at a bugbear of every roofer – being<br />

called back to site to fix problems that aren’t theirs<br />

4 TC JULY <strong>2018</strong>



Tax, VAT and sole traders: honestly, it doesn’t<br />

always have to be so taxing!<br />


This month our Inspector bursts a few myths<br />

about blistering<br />


Gary Walpole explains what to do if you<br />

encounter asbestos on site<br />



BMI’s Apprentices of the Year were crowned following<br />

two-days of tough competition<br />


NFRC responds to claims by Which? that the public trust<br />

in roofers is extremely low<br />

06<br />


How do you use your ‘company van’? It will<br />

have a big impact on the tax you should pay<br />



20<br />

TOTAL<br />


54 TOTAL<br />


62 TOTAL<br />


42<br />

JULY <strong>2018</strong> TC 5

Industry News<br />



Above: Kieran Forster (l) and Jay Webster receive their<br />

prizes from Andy Dennis, MD UK & Ireland at BMI Group.<br />

BMI has crowned both its Icopal flat roofing<br />

and Redland pitched roofing Apprentices of<br />

the Year for <strong>2018</strong>.<br />

After two-days of tough competition and<br />

informative presentations from a number of<br />

experts, Kieran Forster of Newcastle College<br />

and Hodgson Sayers was crowned Icopal<br />

Apprentice of the Year, with Jay Webster of<br />

Leeds College of Building and Yorkshire<br />

Heritage Roofing winning the Redland<br />

Apprentice of the Year.<br />

Both Kieran and Jay were awarded their<br />

respective trophies, certificates, goody bags<br />

including tools and other gifts from sponsors<br />

– plus their cheques for £1,000 – at a grand<br />

awards ceremony at Cricklade House, on the<br />

edge of the Cotswolds.<br />

Joe Burgess of ERRTG and Waveney District<br />

Council, and Tom Thompson of South West<br />

Region Training Group and A.L. King were<br />

both Highly Commended in the flat roofing<br />

and pitched roofing events respectively.<br />

When presenting the awards, Andy Dennis,<br />

Managing Director UK & Ireland at BMI<br />

Group, explained: “We received well over 100<br />

applicants for <strong>2018</strong>’s event so all the<br />

finalists have done brilliantly to get here.<br />

Every one of the finalists has done things that<br />

have taken them out of their comfort zone.<br />

We’d like to thank all the colleges for their<br />

support as well as our sponsors.”<br />

Look out for more on the Apprentice of the<br />

Year in upcoming issues of Total Contractor<br />


Contractor’s Day, the new conference and<br />

exhibition for roofing and cladding<br />

contractors – which takes place at<br />

Twickenham Stadium on 30th November – is<br />

going from strength to strength following the<br />

recent announcement that Marley Eternit will<br />

be one of the Event Supporters and BMI Group<br />

will be sponsoring the Skills Zone. This is in<br />

addition to a number of exciting new<br />

exhibitors who have signed up for the event.<br />

Andy Dunn, Publishing Director of Total Contractor<br />

magazine, who co-launched Contractor’s Day<br />

alongside the NFRC, explained that having Marley<br />

Eternit as an Event Supporter and the BMI Group<br />

as Skills Zone sponsor shows Contractor’s Day is<br />

making its mark in the sector, and the knowledge,<br />

expertise and product range of these companies<br />

will really add to the visitor experience.<br />

Andy explained: “We’ve been blown away by the<br />

response to Contractor’s Day; the event has really<br />

caught the imagination of the roofing and<br />

cladding sector and being able to announce both<br />

Marley Eternit as an Event Supporter and BMI<br />

Group as Skills Zone sponsor again highlights the<br />

calibre of exhibitor visitors can expect to see at<br />

Contractor’s Day.”<br />

The organisers explained that in addition to the<br />

already comprehensive list of manufacturers and<br />

RoofCert is the four-year programme that the<br />

NFRC is managing in partnership with the CITB to<br />

develop an accreditation programme.<br />

The NFRC explains on its website that whether it<br />

be the need to improve the quality and safety of<br />

our buildings or attracting a new generation of<br />

workers with new skills, roofing is facing some<br />

fundamental challenges and is under more public<br />

scrutiny than ever before. The NFRC states that<br />

despite the great work that many roofing<br />

contractors deliver day in and day out, there are<br />

BMI Group and Marley Eternit – leading players in the roofing<br />

sector – will be at Twickenham for Contractor’s Day!<br />

suppliers of materials, systems and accessories<br />

exhibiting at Contractor’s Day, new additions<br />

include ROCKWOOL, Imerys, Yeoman Rainguard,<br />

Cromar Building Products, Eagle Insulations, the<br />

Institute of Roofing, Pump House, EagleView,<br />

Britannia Paints, Ultraflex, Hambleside Danelaw,<br />

Bilco UK, Polyroof, Res-Tec, Associated Lead Mills<br />

and NCTS.<br />

Andy Dunn continued: “With four months until the<br />

doors open at Twickenham Stadium, Contractor’s<br />

Day is really starting to take shape. The Skills Zone<br />

will be a real attraction and hub of activity for<br />

visitors alongside our two seminar theatres, and of<br />

course all the exhibitors will help make<br />

Contractor’s Day an event not to be missed.”<br />

He concluded: “We’d like to thank the many<br />

companies who will be exhibiting and supporting<br />

Contractor’s Day for their support, and we look<br />

forward to welcoming visitors to Twickenham<br />

Stadium for what will be a real celebration of all<br />

things roofing and cladding.”<br />

www.contractorsday.co.uk<br />


many more unskilled and inexperienced people<br />

that can simply set themselves up in business,<br />

ruining everyone else’s reputation in the process.<br />

The NFRC concludes that accreditation will solve<br />

this reputational issue and more. The association<br />

says that not only will it certify to the wider world<br />

that a contractor has the competency to carry out<br />

work, but the path towards formal accreditation will<br />

naturally improve skills and provide a clearer career<br />

path, ultimately helping to professionalise roofing.<br />

(Public Trust is an issue for roofers p.12)<br />

6 TC JULY <strong>2018</strong>

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Industry News<br />


Staff at SIG Design & Technology are<br />

celebrating after scooping a hat-trick of<br />

awards at the Single Ply Roofing Association<br />

(SPRA) Awards Dinner on June 20th.<br />

SIG won the category of Best Refurbishment<br />

for its work on an ‘exceptional and unique<br />

heritage project requiring outstanding<br />

workmanship’; refurbishing the Ogee Dome at<br />

an iconic Bristol landmark, the former<br />

General Hospital.<br />

Meanwhile, SIG’s expertise at the Lymington<br />

Shores residential development in Hampshire,<br />

earned two more awards – a win for Best<br />

Safe Working, and a highly commended in the<br />

Best New Construction category.<br />

Mike Crook, Trading Director at SIG Design &<br />

Technology, commented: “We’re delighted to<br />

carry off a hat-trick of awards at the <strong>2018</strong><br />

SPRA Conference Awards Dinner. We’re also<br />

thrilled to share in this success with our<br />

DATAC accredited contractors; Roofworx and<br />

Flat Roofing Membranes, who worked with us<br />

on The General Hospital, Bristol and<br />

Lymington Shores respectively. We work<br />

closely in formal partnerships with our<br />

accredited contractors to help them win<br />

business and to ensure flat roofing<br />

installations are completed to the highest<br />

quality in accordance with technical<br />

standards.”<br />

Above, top: Lymington Shores; Above: The General<br />


Condron Concrete Works, a leading supplier of<br />

building materials based in Tullamore, Co.<br />

Offaly, was recently chosen to supply 10,500<br />

roof tiles for a sculpture in the Serpentine<br />

Gallery, Kensington Gardens.<br />

“As a company, we pride ourselves on being<br />

innovative and moving with the times, but we<br />

knew when we won the contract that this was<br />

going to be something special,” explained John<br />

Condron, CEO at Condron Concrete Works.<br />

“The line between art and functionality is<br />

becoming increasingly blurred and especially<br />

when you look at roof tiles which are largely<br />

utilitarian. It’s not often you see this type of<br />

product being incorporated into a sculpture of this<br />

magnitude but there’s a big feel-good factor<br />

associated with that,” continued Condron.<br />

Frida Escobedo, the Mexican Architect who<br />

designed the Sculpture, requested 10,500 rooftiles<br />

with four holes to be embedded in each<br />

piece. The finished Pavilion, composed of a lattice<br />

of concrete roof tiles is designed to diffuse the<br />

view out into Hyde park and produce a vibrant<br />

mix of greens and blues from within.<br />

CUPA GROUP (CUPA) has acquired the<br />

remaining share capital in Burton Roofing<br />

Merchants Ltd, one of the largest independent<br />

distributors of roofing materials in the UK, from<br />

the Estate of Peter Burton, meaning it now owns<br />

100% of the company.<br />

CUPA first invested in Burton Roofing in 2008 and<br />

since then the company has grown significantly.<br />

Burton Roofing’s recent acquisition of Brian Gow<br />

Roofing Warehouse, a distributor specialising in<br />

roofing materials, will further consolidate its<br />

position in the UK market, adding three new<br />

distribution warehouses in South East England<br />

and will reportedly bring a combined total<br />

turnover of approximately 60 million pounds.<br />

Condron Concrete Works supplied 10,500 roof tiles for a<br />

sculpture in the Serpentine Gallery, Kensington Gardens.<br />

“The Serpentine Sculpture certainly raised a few<br />

eyebrows among the design team because it<br />

meant producing a roof tile with four specific<br />

holes placed in them”, explained John O’Rourke,<br />

project manager at Condron Concrete Works.<br />

“We are tremendously proud to be involved with<br />

the Serpentine Sculpture because it’s exciting,<br />

it’s different and it gives people the opportunity to<br />

see our products being displayed in a whole new<br />

light. No pun intended, this really does cement<br />

relationships for everyone doing business in the<br />

UK and this is a big win for Condron Concrete<br />

Works”, concluded John Condron.<br />

Read more on this project at:<br />

www.total-contractor.co.uk<br />


The CEO of CUPA GROUP, Javier Fernández,<br />

said: "With the addition of Brian Gow, Burton<br />

Roofing will significantly expand its local<br />

presence in South East England, consolidating<br />

its position as one of the UK’s largest<br />

independent specialist distributors of roofing<br />

materials. Led by Paul Hattee, the company will<br />

operate 13 distribution centres across the UK,<br />

making it an attractive partner for the<br />

construction industry.<br />

“Our continued investment in Burton Roofing, also<br />

demonstrates CUPA’s confidence in the long-term<br />

prospects of the UK’s roofing materials market<br />

and CUPA’s firm commitment to<br />

internationalisation and growth.”<br />

8 TC JULY <strong>2018</strong>





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Industry News<br />



As standards in roofing continue to evolve<br />

every day, Russell Roof Tiles is advising<br />

contractors and developers to get the best<br />

advice possible before starting re-roofing<br />

projects.<br />

Mark Parsons, Technical Director at Russell<br />

Roof Tiles, said: “Weather patterns,<br />

legislation and energy efficient requirements<br />

are changing and evolving all the time, and<br />

as roof tile manufacturers it is our role to<br />

stay ahead of these changes and advise our<br />

customers on the best course of action for<br />

re-roofing projects.”<br />

One of Russell’s most recent re-roofing<br />

projects saw the team work closely with<br />

Ashfield District Council to supply its<br />

Highland roof tiles in cottage red as part of a<br />

£30m five-year housing scheme. Russells<br />

was able to provide the necessary advice to<br />

ensure that all legislation was met and the<br />

tiles and accessories ensured consistency<br />

and longevity for the tenant, whilst<br />

minimising future life time costs of the roof<br />

once installed.<br />

Mark added: “While the Ashfield District<br />

Council project was a great success, not<br />

everyone is aware that they also have access<br />

to this type of advice. It is important to know<br />

that anything from the weight of the tile to<br />

choosing the right sustainable accessories<br />

need to be taken into consideration before<br />

modifying any roof structure.<br />

“We always recommend speaking to a roofing<br />

expert as they will be able to advise on any<br />

regulations that need to be adhered to. By<br />

doing so, this will see less problems further<br />

down the line and as legislation continues to<br />

evolve, this will become more important than<br />

ever for re-roofing projects.”<br />


The mastic asphalt industry’s most impressive<br />

projects and professionals were recognised at<br />

the Mastic Asphalt Council’s (MAC) <strong>2018</strong> Awards<br />

hosted at London’s Royal Horseguards Hotel.<br />

Over 140 key players from the sector attended the<br />

event which is sponsored by Alltype Specialist<br />

Roofing Supplies, Academy Consulting and Sky<br />

Gardens. The awards present the ideal<br />

opportunity for the Mastic Asphalt Council to<br />

honour top projects and professionals across the<br />

mastic asphalt industry.<br />

The winner of the John Blowers Award for <strong>2018</strong><br />

was Mick Elliott of IKO PLC. Mick started his<br />

career as a Laboratory Technician and has played<br />

a valuable role in the development and<br />

production of polymer modified mastic asphalt.<br />

He became a member of IKO Technical Services in<br />

2000 and is well known throughout the industry<br />

for promoting the qualities and benefits of mastic<br />

asphalt, and for offering excellent advice and<br />

service to contractors, specifiers and clients.<br />

The Challenge Trophy Award was made to BCC<br />

Asphalt for the Church of St. Mary and All Saints<br />

project. This award recognises the most<br />

impressive project across the year carried out in<br />

the most challenging conditions. The application<br />

of mastic asphalt was carried out at a<br />

problematic working height in very difficult<br />

The Wales National Roof Training Group has<br />

launched a new Heritage Roofing Skills course<br />

which will see successful participants achieve<br />

an NVQ Diploma Level 3 in Roof Slating and<br />

Tiling, awarded by NOCN.<br />

The 30-day course is delivered by UK Roofing<br />

Awards winners and heritage roofing experts<br />

Andy Rowlands and Richard Jordan, and<br />

develops skills and experience working with<br />

heritage roofing materials including clay tiling,<br />

natural random-sized slating, and stone slating<br />

The John Blowers Award, which commemorates MAC’s longserving<br />

director and secretary John Blowers went to Mick Elliott.<br />

weather conditions. The building was kept<br />

watertight as works progressed and different<br />

contours and curves of gutters were expertly<br />

matched using mastic asphalt.<br />

The final award of the event was the highly<br />

sought after Project of the Year Award which was<br />

awarded to Sussex Asphalte for the St Paul’s<br />

Cathedral project in London. Mastic asphalt was<br />

first laid in 1906 on the Stone Gallery that circles<br />

the Cathedral dome and it provided a remarkable<br />

111 years’ weatherproof protection before it<br />

required refurbishment last year. Sussex Asphalte<br />

secured the contract to replace the asphalt<br />

around the Cathedral dome and completed the<br />

refurbishment of this historic building with<br />

excellent attention to detail and workmanship<br />

throughout, with neat upstands, arrises and<br />

splays. Scaffolding and hoists were used to<br />

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including historic valley details.<br />

Funding is also available for companies registered<br />

with CITB and candidates will be expected to<br />

attend a 30-day programme over a 12 month<br />

period in various locations throughout the UK.<br />

If you or a member of your team is interested in<br />

taking part in the course, please contact Lesley<br />

Hughes (AIoR) at Lesley.hughes@wnrtg.co.uk or<br />

tel: 07817 641984.<br />

10 TC JULY <strong>2018</strong>

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-<br />


-<br />

Tel: 01487 841400<br />


Industry News<br />


The National Federation of Roofing Contractors<br />

(NFRC) is urging homeowners to employ<br />

affiliated roofers after research found the sector<br />

was plagued by fear of rogue traders.<br />

The NFRC spoke out after a Which? survey of<br />

householders found only half thought roofers were<br />

trustworthy.<br />

Poor workmanship and “being taken for a ride”<br />

were labelled top concerns with 46% worried they<br />

would get “ripped off”.<br />

Plumbers, carpenters and electricians were<br />

considered the most trustworthy with builders<br />

joining roofers at the bottom of the table.<br />

James Talman, CEO from the NFRC, said: “Roofers<br />

without the correct qualifications, proficiencies<br />

and dedication to quality and care do a disservice<br />

to the many true professionals within our industry.<br />

Finding roofers who have the necessary skills and<br />

expertise to carry out work safely and according to<br />

best practice has long been an issue in our industry<br />

and one we have been working hard to resolve.”<br />

In November 2017, NFRC launched an industrywide<br />

accreditation to protect and support the<br />

growth of the sector now and in the future.<br />

This accreditation is the result of collaboration<br />

between the NFRC and the Construction Industry<br />

Training Board (CITB) and aims to improve<br />

efficiency, upskill the workforce and encourage<br />

the use of new technology.<br />

NFRC also runs the Competent Roofer scheme, a<br />

government-authorised scheme which allows<br />

roofers to self-certify roof refurbishment work as<br />

compliant with Building Regulations in England<br />

and Wales.<br />

The NFRC is urging homeowners to use affiliated roofers.<br />

James continued: “Our advice to anyone searching<br />

for a roofer would be to avoid relying on review<br />

sites and don’t get sucked into saving the pennies<br />

with an unaffiliated individual.<br />

“Instead search for roofers linked to trade<br />

federations like ours. Our members are subject to<br />

rigorous checks of their work, technical<br />

competency, skills and training.<br />

“Through this membership requirement they can<br />

clearly demonstrate their experience and technical<br />

knowledge to carry out the work, and they come<br />

with a seal of approval which is much greater<br />

than an anonymous review online.”<br />



DANOSA recently presented Ratton Rangers,<br />

an under 9’s grass roots football team, with<br />

a brand new kit for their recent tour to<br />

Spain to take part in the annual Barcelona<br />

Football Festival. DANOSA were keen to get<br />

involved by supporting the team, believing<br />

strongly in lending local causes the support<br />

they need.<br />

Steve Downey, DANOSA’s Commercial Director,<br />

said “Ratton Rangers held a winter tournament to<br />

raise funds for their planned summer trip to<br />

Spain to compete in the Barcelona Football<br />

Festival, but were short of funds to provide a new<br />

kit for the trip. We’re thrilled that we’ve been able<br />

to contribute to the success of the team and were<br />

delighted to hear of their success in Spain,<br />

competing against teams throughout Europe –<br />

even more remarkable given the boys played an<br />

age group up and finished as quarter finalists<br />

before bowing out of the competition. We’d also<br />

like to wish them the best of luck throughout the<br />

summer at the various tournaments they have<br />

Ratton Rangers were presented with a brand new kit from<br />

the team at DANOSA. The kit was given its first outing at the<br />

annual Barcelona Football Festival where the youngsters<br />

reached the quarter finals despite playing in an age group<br />

above them.<br />

planned up and down the country. Now, I’m<br />

probably biased, but I think the kit looks<br />

fantastic!”<br />

Ratton’s team manager, added: “Since receiving<br />

the sponsorship from DANOSA there’s been a<br />

renewed interest in the boys and their eyecatching<br />

new kit has certainly given the boys a<br />

morale boost. We were delighted to be able to<br />

enter the tournament season with such great<br />

support, and we can’t thank DANOSA enough for<br />

their generosity.”<br />

SIG’s SIGnature 25 roof waterproofing<br />

system has been awarded the BBA (British<br />

Board of Agrément) certification.<br />

The quality accreditation is for SIG’s<br />

own range of Torch-On roofing<br />

bituminous membranes. These comprise<br />

polymer-modified bitumen<br />

waterproofing membranes, insulation<br />

boards and a vapour control layer (VCL)<br />

for use on flat and pitched roofs with<br />

limited access.<br />

Suitable for warm or cold roofs, the<br />

SIGnature Torch-On range is available in<br />

three underlay options, with the potential<br />

for either 20 or 25 year warranties.<br />

SIGnature 25 was used at Layfield School.<br />

12 TC JULY <strong>2018</strong>

Delivering training excellence<br />

to the roofing industry<br />

20% discount<br />

on training<br />

courses<br />

in <strong>July</strong> and<br />

August only*<br />

National Construction Training Services is<br />

committed to providing an outstanding level<br />

of training across all roofing disciplines.<br />

Contact us to see the courses that<br />

are running for the rest of <strong>2018</strong><br />

We train all roofing disciplines, Slating, Tiling,<br />

Lead, Hard Metals, Liquid and Bituminous<br />

Waterproofing.<br />

Working with roofing federations, training<br />

groups, manufacturers and employers from<br />

across the industry , we can offer a variety<br />

of training courses designed to fit with your<br />

needs, no matter your level of skill.<br />

Book your place now!<br />

l Lead welding and bossing courses<br />

l Slate & Tiling training on our<br />

professional rigs<br />

l Hard Metal courses for Zinc Copper<br />

Aluminium and Stainless Steel<br />

l NVQ Level 2 apprenticeships for Slate &<br />

Tiling and Lead and Hard Metals<br />

l Next NVQ intake is September <strong>2018</strong><br />

For more information on apprenticeship training contact:<br />

training@ncts.org.uk<br />

National Construction Training Services<br />

www.ncts.org g.uk<br />

@NCTS_2017<br />

01480 501011<br />

NCTS<br />

*This offer applies only to weeks commencing 23r<br />

eeks commencing 23rd <strong>July</strong><br />

until week commencing 3rd September <strong>2018</strong>.<br />

JULY <strong>2018</strong> TC 13

Contract Talk<br />



In our latest instalment of Contract Talk, Janine Brady, Marketing Manager at SIG Roofing,<br />

offers some initial points to consider when it comes to tax and VAT for those considering<br />

being a sole trader.<br />

So, you’ve chosen roofing as your career<br />

and decided to be your own boss. You’ve<br />

got the business plan, the skills, the tools,<br />

and the customer connections – but it’s not just<br />

the relationship with your customers you have to<br />

consider. There’s also your responsibilities to Her<br />

Majesty’s Revenue & Customs.<br />

So many questions; just how much tax will I have<br />

to pay? When and how will I have to pay it? Can I<br />

claim expenses? What about VAT? To be fair, it is<br />

a little complicated, however, put some time<br />

aside to look into it and all will become clear.<br />

It might seem obvious but the best place to go for<br />

information is the HMRC itself, or rather its<br />

website, which you can access via www.gov.uk.<br />

As well as providing the detail on tax and VAT in<br />

bite-sized pieces, HMRC also offers helpful,<br />

interactive web-based video conferences that are<br />

free to access. You can join them ‘live’, even post<br />

a question, or log onto YouTube for video-based<br />

tips. There’s also a telephone helpline should the<br />

online support not be your cup of tea.<br />

But before we talk about tax, here’s one piece of<br />

advice – find yourself a reliable accountant or tax<br />

adviser. Ask trusted colleagues who they use, or<br />

speak to family and friends and find out who they<br />

would recommend.<br />

As well as sorting out your annual tax return, a<br />

good accountant will be happy to answer any<br />

additional questions you might have. For all the<br />

hassle it takes away it’s worthwhile and relatively<br />

inexpensive.<br />

Let’s talk tax<br />

As a sole trader, you will need to fill in a Self-<br />

Assessment form every year, either a paper one<br />

or online – watch out for the differing deadlines,<br />

however if you have an accountant they can help<br />

you with this.<br />

The Income Tax band you fall in and therefore the<br />

amount of tax you pay will depend on your profit,<br />

not your total income. HMRC will calculate what<br />

you owe based on the figures you supply in the<br />

Self-Assessment form.<br />

“The Income Tax band<br />

you fall in and<br />

therefore the amount<br />

of tax you pay will<br />

depend on your profit,<br />

not your total income”<br />

The good news is you can set some of your<br />

outgoings against your income to bring down your<br />

taxable profit. This includes such things as the<br />

use of your home as an office, internet and<br />

mobile phone costs.<br />

If, for example, your turnover is £40,000 and your<br />

expenses are £10,000, you only pay tax on £30,000.<br />

It’s also important to keep separate business<br />

and private bank accounts. Don’t be tempted to<br />

‘borrow’ from one to pay the other, because<br />

when it comes to paying your tax bill you might<br />

find the money’s not there. Many banks offer 12<br />

months or more free business banking to help<br />

you get started.<br />

Don’t forget; as a sole trader you usually also pay<br />

two types of National Insurance (NI) – Class 2<br />

and 4 – which qualify you for benefits including<br />

the State Pension. Class 2 is a set weekly rate –<br />

currently £2.95, while Class 4 is a sliding scale<br />

linked to profit. Most sole traders pay NI through<br />

Self-Assessment along with their Income Tax.<br />

VAT’s all folks<br />

Finally, VAT. To register and pay it, or not? If your<br />

annual turnover is £85,000 or over you will have<br />

to register regardless – but if less than that it’s<br />

your choice.<br />

The main benefit of being VAT registered is that<br />

some people and businesses consider you to be<br />

more professional. Having that VAT number on<br />

your invoices gives the impression that your<br />

business is more established, something that<br />

customers like to see.<br />

The standard VAT rate is, of course, 20% and you<br />

will always charge customers this amount.<br />

However, when it comes to you paying VAT to the<br />

HMRC, they offer you the choice of doing so under<br />

something called the Flat Rate scheme – which is<br />

a ‘simplified’ way of calculating your VAT.<br />

As a roofer, the Flat Rate you would pay can vary<br />

considerably depending on whether you are<br />

supplying labour-only or labour and materials, so<br />

it’s important to check.<br />

A downside of being VAT registered is filling in a<br />

quarterly VAT return, however it’s not that difficult<br />

or time-consuming and HMRC will send you a<br />

reminder one month in advance.<br />

There are other ways to set yourself up in<br />

business – such as a limited company and we’ll<br />

look at that in a future issue.<br />

Contact SIG Roofing<br />

0845 612 4304<br />

www.sigroofing.co.uk<br />

@SIGRoofing<br />

14 TC JULY <strong>2018</strong>

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FREE<br />


An Inspector Calls<br />



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

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

often cost you both time and money.<br />

This month the Inspector bursts a few<br />

myths about blistering.<br />

It won’t come as a great surprise that there are<br />

many reasons why a waterproofing membrane<br />

may blister. However, what is surprising is that<br />

most contractors and building owners<br />

automatically assume it to be a product failure or<br />

an inherent defect in the product itself. Sadly that<br />

is rarely the case; blisters are most commonly a<br />

consequence of poor or incorrect application, and<br />

in the majority of instances, of insufficient<br />

preparation by the installing contractor.<br />

Let’s have a look at why blistering occurs and<br />

what steps can be taken to prevent it from<br />

happening in the first place. A few simple do's<br />

and don’ts are all it takes to significantly reduce<br />

this often-misunderstood ‘phenomenon’ in the<br />

industry.<br />

Presence of moisture or excessive heat<br />

Most blisters are the result of the presence of<br />

moisture and / or excessive heat at the point of<br />

membrane application. If the moisture gets<br />

trapped underneath the membrane, it is highly<br />

likely that this will be the birthplace of your<br />

blister(s). If the surface retains any moisture, the<br />

bitumen or adhesive used to bond the membrane,<br />

will not make contact with the underlying<br />

substrate, leaving a tiny pocket of surface area<br />

that could encourage blistering.<br />

Throughout the seasonal changes and prolonged<br />

exposure to UV, this pocket of moisture will<br />

expand and contract until it reaches a size many<br />

would find unsightly, and may well spoil an<br />

Above: Blisters on a flat roof installation.<br />

otherwise fantastic looking roof with a number of<br />

blemishes and imperfections. If this occurs in a<br />

number of locations, the client may be left with a<br />

roof which resembles a rocky road instead or<br />

even a patchwork quilt following the likely repair<br />

needed.<br />

Restricted movement<br />

Another well-documented reason for blistering is<br />

down to the specification of multiple fully-bonded<br />

layers. These layers restrict the movement of<br />

trapped moisture and if a number of<br />

them are applied on top of each<br />

other, blisters are likely to<br />

form between each and<br />

every fully-bonded layer,<br />

particularly if moisture or<br />

gas is trapped between them.<br />

The solution is to install a<br />

partially-bonded layer, such as our<br />

“Whilst most blisters<br />

are widely considered<br />

aesthetic issues only,<br />

those that are in close<br />

proximity to membrane<br />

side and head laps will<br />

be of concern”<br />

Total Torch Vapour Dispersion Layer, which<br />

prevents this from happening as it allows trapped<br />

moisture to navigate freely between the<br />

membrane stripes, preventing moisture build-up<br />

in isolated locations.<br />

Blister position<br />

Whilst most blisters are widely considered<br />

aesthetic issues only, those that are in close<br />

proximity to membrane side and head laps will<br />

be of concern. The pressure from those<br />

blisters can breach the lap creating<br />

a potential point of entry for<br />

water ingress, which could<br />

become an immediate<br />

headache for the contractor<br />

and client.<br />

Preparation<br />

You may recall from May’s article<br />

on deck preparation that getting<br />

“Some moisture will not be visible to the naked<br />

eye so extreme care should be taken as the<br />

responsibility of providing a suitable substrate<br />

lies solely with the installing contractor”<br />

16 TC JULY <strong>2018</strong>

“If the moisture gets<br />

trapped underneath<br />

the membrane, it is<br />

highly likely that this<br />

will be the birthplace of<br />

your blister(s)”<br />

everything prepared is arguably the biggest<br />

influence on success. This is also the critical<br />

stage if we are to make blisters a 'thing of the<br />

past' too. To prevent blistering we advise that all<br />

decks are fully dried before the membrane is<br />

applied, and care is taken when a contractor<br />

tries to dry a roof unnaturally with a gas torch.<br />

Some moisture will not be visible to the naked eye<br />

so extreme care should be taken as the<br />

responsibility of providing a suitable substrate lies<br />

solely with the installing contractor.<br />

Best practice also dictates that the substrate<br />

receiving the membrane is primed with the<br />

How to ensure your roof project doesn’t blister:<br />

Do:<br />

•Clean and prime the roof, ensuring the<br />

prepared surface is fully dry and free<br />

from contaminants.<br />

•Use partially bonded layers where<br />

appropriate.<br />

•Use roll-bars to distribute even weight<br />

and apply pressure across the<br />

membrane on application.<br />

•Consult the manufacturer for advice.<br />

appropriate primer.<br />

As mentioned in May’s article, primers are<br />

developed by manufacturers to provide the<br />

strongest bond possible for their products and to<br />

prepare new and existing surfaces for the<br />

membrane.<br />

These primers will therefore give you the best<br />

Don’t:<br />

•Apply products on wet or damp<br />

surfaces.<br />

•Use multiple layers of fully-bonded<br />

membranes.<br />

•Rely solely on gas torches to dry the<br />

roof (also heed advice on combustible<br />

substrates here!)<br />

•Ignore free technical advice.<br />

opportunity for success and help reduce latent<br />

defects (such as blisters) from occurring in the<br />

future.<br />

Contact Icopal’s Technical Team<br />

0161 865 4444<br />

www.icopal.co.uk<br />

@Icopal_UK<br />

For further inf<br />

formation<br />

or a hire quotation call<br />

01858 410372<br />

JULY <strong>2018</strong> TC 17

NFRC Tech Talk<br />



By Gary Walpole, NFRC Technical Officer.<br />

The Health and Safety Executive (HSE) says<br />

that any building constructed or refurbished<br />

before 2000 may contain asbestos, which<br />

means that roofing contractors carrying out<br />

refurbishments are likely to come into contact<br />

with asbestos at some point. And that poses a<br />

real health hazard.<br />

The Institution of Occupational Safety and Health<br />

(IOSH) says that 5,000 workers a year die from<br />

lung cancer caused by asbestos. Other asbestosrelated<br />

diseases, which can take up to 40 years to<br />

fully develop, include asbestosis, mesothelioma<br />

and pleural plaques.<br />

Early warning signs can include a persistent<br />

cough, breathlessness, an ache in the chest or<br />

shoulder or coughing up phlegm with traces of<br />

blood.<br />

Asbestos can be found in pretty much all areas of<br />

a building, including bitumen felts, mastics,<br />

sealants, putties and adhesives, floor tiles and<br />

gaskets, spray coatings and lagging. Asbestos can<br />

also be present in insulating boards, yarns,<br />

millboard and papers, fibre cement and textured<br />

coatings and paints.<br />

Yet despite being on the front line, a recent survey<br />

of 500 construction workers carried out by IOSH<br />

found that a third had never checked the asbestos<br />

register before starting work, and one in five said<br />

they would not know what to do if they<br />

encountered asbestos. This is why IOSH has<br />

Above: The NFRC is supporting the IOSH asbestos<br />

awareness campaign.<br />

launched an asbestos awareness campaign as<br />

part of its wider No Time to Lose campaign, to<br />

explain the causes of occupational cancer and<br />

help businesses take action.<br />

You can find the details of the campaign, which<br />

the NFRC is supporting, below.<br />

So, what should you do if you encounter asbestos on a project?<br />

1. Before carrying out work<br />

Always make sure that your employer has<br />

an asbestos management plan detailing<br />

how asbestos will be managed if found.<br />

This plan should include an asbestos risk<br />

register that has the latest information<br />

about the presence and condition of<br />

asbestos in the building.<br />

You should also be given training on how<br />

to work safely around materials<br />

containing asbestos but should never be<br />

asked to work in an area that might<br />

disturb the asbestos.<br />

2. What to do if you think you’ve<br />

disturbed asbestos<br />

Asbestos removal and the cleaning up of<br />

dust should only ever be carried out by<br />

specialist contractors.<br />

1. Stop work immediately.<br />

2. Evacuate everyone from the area and<br />

prevent others from entering.<br />

3. Do not remove equipment or materials.<br />

4. Close, seal or lock off the area.<br />

5. Put up warning signs.<br />

6. Report it to your employer.<br />

To find out more, visit www.notimetolose.org.uk and<br />

www.hse.gov.uk/asbestos/managing/ The HSE has<br />

also developed an app called beware-asbestos.info<br />

offering practical advice to contractors.<br />

Contact the NFRC<br />

020 7638 7663<br />

www.nfrc.co.uk<br />

@TheNFRC<br />

18 TC JULY <strong>2018</strong>

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Perfectly Pitched<br />



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

the pitched roofing expert and consultant looks at some of the unintended consequences of<br />

improving roof design and installation practices.<br />

Pitched roof slating and tiling practices have<br />

improved immeasurably in recent years.<br />

However, with each improvement there<br />

can sometimes be an unintended or unforeseen<br />

consequence. In this article, I will highlight some<br />

of these and – keeping with my policy of never<br />

writing a negative piece – I will endeavour to<br />

suggest ways to avoid some of these<br />

consequences.<br />

Modern lightweight ‘breathable’ underlays<br />

One of the biggest changes to UK pitch roofing<br />

has been the introduction of air and vapour<br />

permeable underlays, commonly referred to as<br />

breathable underlays, though it must be said,<br />

there are many differences between these<br />

products. These have been essential in enabling<br />

roof designs to control excess water vapour that<br />

can otherwise build up in roof structures due to<br />

ever increasing insulation requirements.<br />

However, it has not been straightforward in<br />

changing from the traditional bituminous<br />

underlays to the modern lightweight breathable<br />

underlays. Apart from confusion over design and<br />

the relationships between ceiling construction,<br />

traditional roof ventilation and breathable<br />

underlays, installation problems associated with<br />

these underlays have led to a big increase in<br />

complaints of leaking roofs. Remember, the<br />

underlay must be installed as a waterproof layer<br />

as required in BS 5534.<br />

In traditional ‘English’ cold roof<br />

construction, the underlay is laid<br />

directly over the rafters. This<br />

was fine for traditional<br />

bituminous underlays as they are<br />

heavy and will sag or drape naturally<br />

between the rafters. The underlay drape is<br />

important because it creates a gap between the<br />

underlay and tile battens to allow any water that<br />

gets into the batten cavity to drain away safely to<br />

the gutters. Another feature of bituminous<br />

underlay is its ability to ‘self-seal’ around nail<br />

penetrations and to compress where the tile<br />

battens are fixed through it into the rafters.<br />

Bituminous underlays are therefore watertight<br />

due to the drape and the sealed nail holes.<br />

It can be more difficult to install breathable<br />

underlays with a drape between rafters; for<br />

example, even in a slight breeze the roofers need<br />

to hold the underlay down tight whilst battens are<br />

fixed to restrain it. This can result in the underlay<br />

being installed with no drape whatsoever. Any<br />

water entering the batten cavity will then become<br />

trapped behind the battens. Because breathable<br />

underlay does not compress around the tile<br />

battens or self-seal around nail holes, this water<br />

can find its way through the nail penetrations and<br />

into the roof structure.<br />

Of course, there are many roofs installed using<br />

breathable underlays without problems, but if it is<br />

“If it is difficult to lay the underlay with a drape,<br />

then one option is to install counterbattens over<br />

the underlay, fixed into the rafters”<br />

difficult to lay the underlay with a<br />

drape, then one option is to<br />

install counterbattens over the<br />

underlay, fixed into the rafters.<br />

These only need to be deep<br />

enough to allow water to pass<br />

underneath and, to ensure a watertight seal<br />

around nail penetrations, nail tape can be<br />

installed under the counterbattens.<br />

“Roofers should plan<br />

their work to eliminate,<br />

or at least minimise,<br />

access over laid tiles”<br />

All tiles fixed<br />

The requirement introduced in the 2014 version<br />

of BS 5534 to mechanically fix all tiles means<br />

that roofers are no longer able to lay some tiles<br />

unfixed and then push them up so they can walk<br />

on the battens. Roof tiles and slates are not<br />

designed to be walked on without adequate<br />

protection and it is not particularly safe either. So,<br />

it’s a great step in ensuring roofs tiles are<br />

properly fixed to resist wind loads, but it comes<br />

with consequences for the way in which roofs are<br />

installed.<br />

Unfortunately, it is not practical for<br />

manufacturers to design roof tiles that can truly<br />

be walked on. For one thing, the tiles would be too<br />

heavy for the roof and no doubt be far too expensive<br />

and, in any case, for safety reasons, roofers should<br />

not walk on tiles and slates without there being<br />

some form of access system to both protect the<br />

tiles or slates and to prevent slips and falls.<br />

20 TC JULY <strong>2018</strong>




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gives a more streamlined roof and it meets the requirements of the new BS 8612,<br />

with greater wind resistance, and unique drainage channels to help prevent nasty<br />

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Perfectly Pitched<br />

It therefore falls to us collectively, as an industry,<br />

to develop better ways of working on the roof.<br />

Roofers should plan their work to eliminate, or at<br />

least minimise, access over laid tiles and use<br />

crawling boards and roof ladders where<br />

necessary. Architects could consider the<br />

limitations in working practices of roofing<br />

contractors when they are designing the roof<br />

shape; for example, it is difficult – if not<br />

impossible – to install a hip system without<br />

standing on laid roof tiles and it is not possible to<br />

use roof ladders at a hip. Of course we don’t want<br />

to end up with uninteresting roofs so perhaps<br />

access could be designed into the roof; for<br />

example, walkways and steps to be used not only<br />

by the installation roofers but also for future<br />

maintenance access.<br />

Stronger mortar mixes<br />

The recommended mortar mixes in BS 5534 for<br />

use with ridge and hip tiles have long been of<br />

sufficient strength to resist wind uplift. However, I<br />

think it is safe to say that, in practice, many sites<br />

simply used bricklayer’s mortar which is<br />

Below: Imerys Double Panne S in Red.<br />

“It could be argued that<br />

the need for strong<br />

mortar mixes has<br />

already been<br />

superseded by the BS<br />

5534 requirement to<br />

mechanically fix all<br />

ridge and hip tiles”<br />

considerably weaker, as it is required for masonry<br />

construction. The greater awareness of the latest<br />

revisions to BS 5534, due to great industry PR,<br />

has led to contractors now routinely using the<br />

correct mortar mixes. But now roof tile<br />

manufacturers have seen an increase in<br />

complaints of ridge and hip tiles ‘cracking’ in<br />

some way. Generally this is not due to any defect<br />

in the ridge or hip tiles, but to very slight<br />

movement or settlement of the building structure.<br />

Remember that buildings will always be subject<br />

to drying and temperature movement and mortar<br />

is not a flexible material that can accommodate<br />

any such movement. Consequently, the stronger<br />

mortar ridge and hip bedding damages the ridge<br />

and hip tiles rather than simply becoming<br />

detached from the tiles, as it had done in the<br />

past. In fact, it could be argued that the need for<br />

strong mortar mixes has already been superseded<br />

by the BS 5534 requirement to mechanically fix<br />

all ridge and hip tiles; a measure introduced to<br />

ensure ridge and hip tiles stay securely fixed even<br />

when the mortar bond breaks down due to<br />

structural movement.<br />

Of course, the use of dry ridge and hip systems<br />

has increased rapidly since the introduction of the<br />

BS 5534 requirement to mechanically fix all ridge<br />

and hips. As well as all the advantages that dry<br />

fix brings, it also accommodates any slight<br />

structural movements and thus eliminates this<br />

risk of damage to the ridge and hip tiles.<br />

These are just a few examples of how<br />

improvements to installation Standards or<br />

products create new challenges and so cause us<br />

to rethink roof design.<br />

Contact Imerys Roof Tiles<br />

www.imerys-roof-tiles.com<br />

@imerys<br />

@johnmercer3<br />

22 TC JULY <strong>2018</strong>

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Specialist support from<br />

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fabrications for design flexibility<br />

Kingspan’s own complete range<br />

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insulated gutters, superior polycarbonate daylighting, height-safety systems and a bespoke<br />

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QUICK,<br />






When tendering for roofing contracts, accurate<br />

aerial measurement can be the difference between<br />

profit and loss. With EagleView, you can have<br />

complete confidence in the measurements you base<br />

your tender on.<br />

By combining multi-angle aerial images with<br />

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pitch and length measurements. Colour coding<br />

distinguishes every detail, from ridges, hips and<br />

valleys to verges, eaves and flashings.<br />

Premium Report<br />

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protect your profit.<br />

To see more, visit eagleview.co.uk<br />

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Images .....................................................................1<br />

Length Diagram .........................................................4<br />

Pitch Diagram ............................................................5<br />

Area Diagram ............................................................6<br />

Notes Diagram...........................................................7<br />

Penetrations Diagram.................................................8<br />

Report Summary........................................................9<br />


SEE US AT<br />

Total Roo f Area = 467.95 sq m<br />

Total Roof Facets =24<br />

Predominant Pitch = 45°<br />

Numb er of Storeys > 1<br />

Total Ridges/Hips = 84.43m<br />

Total Valleys<br />

= 17.07m<br />

Tota l Verges = 14.63m<br />

=111.86 m

M25<br />

M25<br />

Measurements provided by www.eagleview.com<br />

www.eagleview.com/Guarantee.aspx<br />

© 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;<br />

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

Premium Report<br />

06/09/2017<br />

Report:<br />


Images .....................................................................1<br />

Length Diagram .........................................................4<br />

Pitch Diagram ............................................................5<br />

Area Diagram ............................................................6<br />

Notes Diagram...........................................................7<br />

Penetrations Diagram.................................................8<br />

Report Summary........................................................9<br />


Total Roof Area =467.95 sq m<br />

Total Roof Facets =24<br />

Predominant Pitch =45°<br />

Number of Storeys >1<br />

Total Ridges/Hips =84.43 m<br />

Total Valleys =17.07 m<br />

Total Verges =14.63 m<br />

Total Eaves =111.86 m<br />

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

Total Penetrations =14<br />

Total Penetrations Perimeter = 34.75 m<br />

Total Penetrations Area = 9.48 sq m<br />

321 King St.<br />

London, A1 B2C<br />

555-555-5555<br />

Measurements provided bywww.eagleview.com<br />

www.eagleview.com/Guarantee.aspx<br />

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

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;<br />

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


The hi-res imagery that’s<br />

re-engineering roofing<br />

By Kay Rose FIoR National Sales Director, EagleView.<br />

If you’re a roofing professional, imagine<br />

how much easier your job would be if<br />

you had a full overview of the roof even<br />

before visiting the site.<br />

Imagine if – with just a few clicks of<br />

your mouse – you could order a full roof<br />

measurement report that includes high-resolution<br />

images and precise dimensions<br />

of all the areas. Imagine being able to<br />

order materials without the worry of<br />

over- or under-ordering – no need to do<br />

a “guesstimate and<br />

add some” to cover<br />

yourself.<br />

EagleView ® makes<br />

all of this a reality.<br />

Established in the<br />

US in 2008 and<br />

launched in the UK<br />

in November 2017,<br />

the world’s first-ever<br />

remote aerial roof<br />

LONDON<br />

measurement service<br />


MAP<br />

creates 3D models that<br />

deliver highly accurate<br />

and detailed roof<br />

measurements.<br />

Proven<br />

technology<br />



At its core lies the<br />

patented Pictometry ®<br />

technology which<br />

produces high-resolution<br />

imagery<br />

showing the fronts and sides of<br />

buildings. Pictometry imagery<br />

provides oblique perspectives<br />

from 40 to 45-degree angles as<br />

well as an overhead view.<br />

These images are then stored<br />

and, when an EagleView<br />

roofing report is requested,<br />

advanced algorithms and data<br />

analytics are used to translate<br />

them into a highly accurate<br />

model of the property in<br />

question. These models then<br />

enable detailed structural<br />

measurements to be derived –<br />

including eaves, flashing, hips,<br />

verges, ridges and valleys. The reports are<br />

produced quickly – in a matter of hours –<br />

and available in a variety of file formats.<br />


Ridges 30.48 m<br />

Hips 53.95 m<br />

Valleys 17.07 m<br />

Verges 14.63 m<br />

Reducing risk, saving time<br />

Conducting a manual roof survey involves<br />

time travelling to and from the site,<br />

getting safe access to the roof and taking<br />

measurements, and then further time to create<br />

precise dimensional drawings. By replacing<br />

this manual approach with an EagleView<br />

PremiumReport , that time is freed up for<br />

managing active contracts and pursuing new<br />

leads. And, not only does an EagleView<br />

11.1m<br />

4.6m<br />

8.6m<br />

8.6m<br />

4.6m<br />

2.8m<br />

1.8m<br />

1.8m<br />

1.8m<br />

5.5m<br />

3.2m<br />

5.5m<br />

3.4m<br />

5.3m<br />

5.9m<br />

2.8m<br />

8.2m<br />

3.9m<br />

2.8m<br />

1.8m<br />

3.1m<br />

6.2m<br />

6.6m<br />

3.0m<br />

6.6m<br />

6.2m<br />

9.8m<br />

7.1m<br />

6.3m<br />

1.0m<br />

3.8m<br />

7.1m<br />

4.9m<br />

6.2m<br />

5.6m<br />

7.0m<br />

6.2m<br />

18.6m<br />

4.9m<br />

5.0m<br />

2.0m<br />


10.1m<br />


Premium Report<br />

06/09/2017<br />

123 Main St., Tadworth, A1B2 C3D Report: 12345678<br />

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


Contact:<br />

Company:<br />

Exteriors Company<br />

Address:<br />

321 King St.<br />

London, A1 B2C<br />

Phone: 555-555-5555<br />


PremiumReport accelerate workflow, its<br />

accuracy greatly reduces the risk of costly<br />

material miscalculations.<br />

Wider impact<br />

Images .....................................................................1<br />

Length Diagram .........................................................4<br />

Pitch Diagram ............................................................5<br />


Area Diagram ............................................................6<br />

Notes Diagram...........................................................7<br />

Penetrations Diagram.................................................8<br />

Report Summary........................................................9<br />


Eaves 111.86<br />


Total Roof Area =467.95 sq m<br />

Flashing 14.63 m<br />

Total Roof Facets =24<br />

Predominant Pitch =45°<br />

Step flash 26.21 m<br />

Number of Storeys >1<br />

Total Ridges/Hips =84.43 m<br />

Parapets 38.10 m<br />

Total Valleys =17.07 m<br />

Total Verges =14.63 m<br />

Total Eaves =111.86 m<br />

Total Penetrations =14<br />

Total Penetrations Perimeter = 34.75 m<br />

Total Penetrations Area = 9.48 sq m<br />

In the few years since EagleView was first<br />

established in the US, it has become the<br />

industry standard in aerial roof measurements.<br />

Roofing contractors throughout North<br />

America have quickly caught on to the<br />

resource and safety benefits,<br />

and increased number of<br />

contracts they win by using<br />

EagleView PremiumReports.<br />

Insurance companies and<br />

adjusters across the US have<br />

also embraced EagleView<br />

PremiumReports. In fact,<br />

following the wildfires that<br />

ravaged much of California<br />

during December 2017,<br />

EagleView captured and<br />

delivered high-resolution<br />

aerial images of the<br />

devastation in San Diego<br />

County so quickly that its<br />

insurance carrier partners<br />

were able to start viewing<br />

and responding to areas<br />

of severe need before the<br />

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home.<br />

First in the UK<br />

The EagleView<br />

PremiumReport is a ground-breaking<br />

new offering, and there’s nothing else<br />

like it in the UK. It’s currently available<br />

for sites across London (within the<br />

M25), and Bristol and other major<br />

cities are following close behind. It’s<br />

a truly pioneering technology that<br />

stands to benefit anyone involved in<br />

the roofing industry. However, as with<br />

any successful technology, it’s the early<br />

adopters that will gain a competitive<br />

advantage.<br />

To find out more about EagleView<br />

Premium Reports go to eagleview.co.uk<br />

or call 0800 069 8405.<br />


Clay Interlocking Tiles<br />


Tom Woodhouse, Site Services Manager at Marley Eternit, answers some common<br />

installation queries.<br />

Labour shortages and cost pressures mean that large format clay interlocking tiles are becoming<br />

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

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

department receive.<br />

5<br />

key installation questions:<br />

“Due to the corner cuts,<br />

traditional pantiles<br />

have no batten gauge<br />

variance. Therefore a<br />

random sample of tiles<br />

needs to be laid out”<br />

Q: I’m using a breathable membrane with<br />

clay interlocking tiles. Do I need any other<br />

ventilation?<br />

A: Yes, because there is a small amount of air<br />

openness with interlocking tiles there is a myth<br />

that you don’t need additional ventilation if you<br />

are using a breathable underlay. However, this is<br />

not the case. For the purposes of BS 5250, all<br />

variables in the roof build-up, including the<br />

external covering such as standard interlocking<br />

tiles, must be considered. As such, roofs will<br />

almost always require supplementary low and<br />

high level ventilation at the eaves and ridge.<br />

Q: What size battens do I need to use?<br />

A: For all of our clay interlocking tiles, we<br />

recommend the following batten sizes:<br />

38 x 25mm for rafters / supports not exceeding<br />

450mm centres.<br />

50 x 25mm for rafters / supports not exceeding<br />

600mm centres.<br />

Q: Using so many clips is taking too much<br />

time, how can I get round it?<br />

A: The revised BS 5534 means there will be a<br />

degree of clipping required on all single lap roofs.<br />

However, it is possible to knock around 30% of<br />

roof clipping time by using a combined one piece<br />

clip and nail, such as SoloFix. The fact you<br />

haven’t got to have two bags of clips and nails<br />

open means it is much less fiddly.<br />

Above: Marley Eternit’s Lincoln Rustic Red.<br />

Q: Can I use the tiles at a low pitch?<br />

A: It depends on the type of clay interlocking tile<br />

you are using. Many have special weatherproofing<br />

features that allow them to be used at a lower<br />

pitch than their traditional equivalents but this<br />

will vary, so you need to check the<br />

manufacturer’s instructions.<br />

If you need a clay tile for a low pitch extension,<br />

then our Melodie interlocking pantile can be used<br />

down to a very low pitch of just 12.5 degrees. We<br />

also offer two other low pitch clay interlocking<br />

tiles, the Lincoln pantile and the Maxima double<br />

roman tile, which can both be used down to a<br />

minimum pitch of 17.5 degrees.<br />

Q: Do I still need to lay out interlocking<br />

pantiles to determine batten gauge?<br />

A: No, this is where some of the time saving<br />

comes from. Due to the corner cuts, traditional<br />

pantiles have no batten gauge variance.<br />

Therefore a random sample of tiles needs to be<br />

laid out on the ground to determine batten gauge<br />

and that’s why some roofers don’t like using<br />

traditional pantiles.<br />

In contrast, our Melodie pantile has a flexible gauge<br />

and the Lincoln pantile has a fully open gauge. This<br />

means they can be adjusted on the roof, providing<br />

flexibility and requiring less precise installation,<br />

without the need for complicated measuring and<br />

setting out. The more open the gauge, the easier it<br />

is to install, so this is something to check when you<br />

are buying interlocking pantiles.<br />

Total Contractor readers can submit their own<br />

questions for the Marley Technical Team, simply<br />

send your queries to mattdowns@medianow.co.uk<br />

or tweet @MarleyEternit /<br />

@TotContractorUK.<br />

Contact Marley Eternit<br />

01283 722588<br />

www.marleyeternit.co.uk<br />

@MarleyEternit<br />

26 TC JULY <strong>2018</strong>

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* Please contact our Technical Dept for for guidance<br />

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

Contractor’s Q’s<br />


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

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

established Rowlands Roofing in 1992 and is responsible for probably the most recognisable roof<br />

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

10<br />

Questions for Andy Rowlands:<br />

Award-winning roofs by<br />

Rowlands Roofing; left:<br />

Quintain House and<br />

above: Llwyn Celyn.<br />

TC: What was your path into construction<br />

and your current position?<br />

AR: I, like many others in the trade, primarily did<br />

not choose roofing as a career. I originally left<br />

school to become an apprentice technician and<br />

when that did not work out I went to work with a<br />

friend whose family owned a roofing business<br />

and I liked the job. I eventually set up Rowlands<br />

Roofing in 1992, but away from site I deliver Roof<br />

Slating and Tiling Training and NVQ Assessment<br />

in Wales; I am also the NFRC board member for<br />

South Wales and South West, Chair of the<br />

Institute of Roofing for South Wales – and this is<br />

just the shortened version of my commitments!<br />

TC: What’s your one piece of advice for<br />

starting a roofing business?<br />

AR: My approach has always been to treat every<br />

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

new contract may be an opportunity to make some<br />

money but should also be seen as opportunity to<br />

enhance your reputation. Always remember what<br />

Warren Buffet said: “It takes 20 years to build a<br />

reputation but 5 minutes to ruin one.”<br />

TC: Tell us about the current project<br />

you’re working on…<br />

AR: At the moment we are waiting for starts on a<br />

few large projects but an interesting one we are<br />

on is Ewenny Priory near Bridgend. It’s only one<br />

elevation to be done at present with standard<br />

sized Welsh Slates and the associated leadwork,<br />

so nothing remarkable but an interesting building<br />

in a different part of the UK.<br />

TC: Over the years, does one project in<br />

particular stand out?<br />

AR: Quintain House for which we became the first<br />

UK company to win an International Award for<br />

Pitched Roofing at the IFD Awards in Vienna. It<br />

was challenging from the start as I was not on<br />

the original tender list and had to talk the client<br />

and architect into letting me do the job in the first<br />

place. The roof obviously has the ‘wow’ factor<br />

and I could probably retire now if I had £1 for<br />

every time I have explained how we did it! A good<br />

roofer is a good problem solver and as we worked<br />

on and off the project for a period of 12 months I<br />

had plenty of time to plan and devise ways of<br />

getting over any technically awkward details,<br />

ultimately producing a finish with which we were<br />

suitably proud.<br />

TC: What about difficult customers?<br />

AR: Customers nowadays are generally better<br />

informed as they have access to information and<br />

specification on-line, but there’s nothing worse<br />

than having to prove a point to a customer who<br />

turns up as a roofing expert having spent 10<br />

minutes studying the internet – although it can<br />

make for some interesting conversations!<br />

TC: What’s the most frustrating thing<br />

about your job?<br />

AR: For me, the most frustrating thing is the lack<br />

of reward for training. By that I mean you can be<br />

the most qualified and capable roofer in the<br />

country but still lose a job to someone who has no<br />

skills or qualifications because they are cheaper<br />

on price. I get to meet many roofers within my<br />

role as Trainer and Assessor, and not one of them<br />

has been adverse to improving their knowledge<br />

and skills given the chance, but there needs to<br />

be an incentive to train. Hopefully the new NFRC<br />

Accreditation initiative will help to address this.<br />

TC: And the most satisfying?<br />

AR: The most satisfying aspect for me as a roofer<br />

has always been the ability to climb down the<br />

ladder at the end of the day, look at the roof and<br />

say “I did that”. I’m sure I’m not the only roofer<br />

out there who has bored their family senseless<br />

with the “I did that roof” talk on a Sunday drive!<br />

TC: What’s your most important tool<br />

either in the office or on site?<br />

AR: I would be lost without my Macbook and iphone<br />

nowadays. They really allow you to maximise time<br />

in your working day – I’m just not sure how we<br />

managed before we had this technology.<br />

TC: Best social media platform for you?<br />

AR: I’m afraid Twitter is the only social media<br />

platform I am conversant – I like the fact that it<br />

offers short bursts of information.<br />

TC: How do you feel your sector’s shaping<br />

up in <strong>2018</strong>? Any reasons to be positive?<br />

AR: Things are really busy for us this year and<br />

hopefully off the back of us winning the UK<br />

Heritage Roof of the Year Award it will get even<br />

better. I am involved in the roll-out of the Heritage<br />

Level 3 Applied Skills Programme where we hope<br />

to raise the standard of Heritage Roofing across<br />

the UK, and I obviously hope the NFRC Roofing<br />

Accreditation scheme gets the support from the<br />

roofing industry it deserves so we really can have<br />

a trade we are proud to be associated with.<br />

@aprowlands<br />

28 TC JULY <strong>2018</strong>

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same great service.<br />

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Fastener Tech<br />



In the latest instalment of his series of articles looking at the key issues concerning fixings<br />

for roofing and cladding projects, Brian Mack, Technical Business Development Manager at<br />

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

Performance; it’s something you consider on<br />

many levels when looking to change your<br />

car; fuel consumption, acceleration, engine<br />

size, torque and emissions. If it’s a company car<br />

you consider the tax rating and how it compares<br />

with colleagues’ vehicles. For a private car, maybe<br />

looks versus suitability for the teenage taxi run. All<br />

this just from thinking about performance.<br />

From a fastener specification perspective,<br />

performance is not always given the same due<br />

diligence. Price and availability are often first on<br />

the agenda, but certainly should not be the last!<br />

Like choosing a car, many aspects and<br />

performance figures need to be considered.<br />

Calling upon the manufacturer’s expertise in<br />

navigating the product portfolio and performance<br />

criteria is a beneficial exercise. That means it is<br />

our job as product originators to create a rapport<br />

and understanding of what the customer needs,<br />

and more importantly the connection to facilitate<br />

the application.<br />

Consider performance<br />

It’s forgivable to think that a cladding fastener,<br />

for example, can be chosen without considering<br />

performance. After all, it’s not securing a car’s<br />

transmission, neither is it a safety-critical anchor<br />

bolt securing heavy machinery or a steel beam.<br />

However, fastener performance should not be<br />

brushed under the carpet. Whether you are<br />

installing a profiled sheet for an entrance canopy<br />

or the sophisticated sarcophagus cladding<br />

covering Chernobyl’s renowned reactor building,<br />

understanding performance in application is vital.<br />

Tapping in to experience of these sectors and<br />

more can deliver unquestioned technical support<br />

to the specifier and the end user.<br />

Fastener – component –<br />

substrate<br />

Performance starts with the<br />

basics; which fastener will<br />

install the component to the<br />

substrate? Then we consider<br />

drilling or tapping capacity,<br />

speed of installation and suitability<br />

for the materials being fixed. Aesthetics,<br />

colour matching and long-term protection and<br />

seal against the elements are all equally<br />

important aspects of selection.<br />

Longevity<br />

The physical and metallurgical aspects and longterm<br />

performance need to also be considered.<br />

This means we consider pull-out from the<br />

structure, pull-over of the component being<br />

secured, shear performance, and components<br />

acting with and against each other. We look at<br />

corrosion and corrosion protection of the fastener<br />

Products undergo rigorous pull-out testing at the EJOT<br />

Applitec Centre.<br />

Left: Colorfast heads are subjected to 40 year<br />

performance testing, calibrated to<br />

realtime data.<br />

and the connection and<br />

bimetallic / galvanic reaction<br />

with dissimilar metals.<br />

Atmospheric conditions from<br />

within and outside the building<br />

and understanding how these<br />

chemicals react with different metals is also<br />

a critical aspect in fastener selection.<br />

Adapting to changes<br />

Experience and knowledge is the key alongside a<br />

scientific and technological approach in<br />

understanding and adapting this knowledge to the<br />

changes to materials and construction<br />

techniques. Construction never stands still and<br />

materials are continuously evolving which makes<br />

it even more crucial to select the product to meet<br />

the design performance of the application.<br />

It’s not just how it looks<br />

Sounds complicated? Just think in terms of<br />

choosing a car; it’s not just how it looks. Fasteners<br />

need to perform and work in the environmental<br />

conditions of the building’s location. They need to<br />

be compatible with the application and perform<br />

during their lifetime – not just on day one.<br />

Take on board the manufacturer’s advice and<br />

performance figures. We may not offer a cup<br />

holder but we offer fasteners that drive with<br />

performance at the heart of a quality connection.<br />

Contact EJOT UK<br />

01977 687 040<br />

www.ejot.co.uk<br />

@EJOTUK_Building<br />

30 TC JULY <strong>2018</strong>

SEE US AT<br />

The UK’s leading distributer of<br />

The<br />

Rolled<br />

UK’s leading distributer<br />

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and to the ancillary UK Building supplier Industry<br />

to the UK Building Industry<br />

Specifications<br />



Specifications<br />

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TOPHAT<br />

Associated Lead Mills Ltd & ALM HM are the UK’s<br />

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

leading products, distributor and the of largest Rolled Lead Hard Sheet Metal and ancillary<br />

products, supplier to and the the UK largest building Hard industry. Metal and ancillary<br />

supplier to the UK building industry.<br />

For Hard Metals, ALM HM hold extensive stocks of various<br />

materials from all leading European manufacturers including<br />

For Hard Metals, ALM HM hold extensive stocks of various<br />

VMZINC, Rheinzink, KME Copper, Aperam Stainless Steel,<br />

materials from all leading European manufacturers including<br />

Falzonal, Aluminium and Lindab Seamline PLX. We also stock<br />

VMZINC, Rheinzink, KME Copper, Aperam Stainless Steel,<br />

matching rainwater systems. All ready to deliver on our own<br />

Falzonal, Aluminium and Lindab Seamline PLX. We also stock<br />

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matching rainwater systems. All ready to deliver on our own<br />

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Further to the rolled lead and hard metals, ALM also supply all<br />

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EPDM Membranes<br />


John McMullan, Commercial Manager at Firestone Building Products, discusses the<br />

installation of the company’s GeoGard EPDM Membrane at the New USA Embassy<br />

Building in London – but it’s not on the roof…<br />

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

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

Adjacent to the impressive, high specification building is an extensive pond, which both<br />

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

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

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

complex installation challenges for construction and civil engineering contractor, PJ Carey.<br />

7<br />

project issues and facts:<br />

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

shape. At first glance it’s a straightforward semi-<br />

high retaining wall bordering a walkway around<br />

circle, but on closer inspection there’s a dog’s leg<br />

bend at 90 degrees creating a waterfall at a right<br />

angle to the main wall, followed by a further 90<br />

degree bend before the pond continues along a<br />

parallel route. The flexible GeoGard EPDM<br />

membrane provided the ideal solution for lining<br />

the contours of this combination of curves and<br />

angles, with Firestone’s QuickSeam tape used to<br />

seal all joints in the membrane. Despite being<br />

just 1.5mm thick, the system enables elongation<br />

of up to 300%, minimising the risk of tearing and<br />

also provides excellent puncture resistance.<br />

the building perimeter. These walls create an<br />

impactful 5m drop for a feature waterfall, which<br />

is fed by pipework that takes water from the<br />

curved wall to the rear of the building. The EPDM<br />

membrane had to be installed up the vertical<br />

surfaces of these 5m walls and the installation<br />

team roller-applied Firestone Bonding Adhesive to<br />

the prepared concrete surfaces before applying<br />

the GeoGard EPDM membrane directly onto the<br />

substrate.<br />

3.<br />

Above: Laying of the GeoGard EPDM membrane in the main pond area.<br />

The pond installation team had to prepare<br />

6,000 penetrations for the cladding system which<br />

The $1 billion New London Embassy (NLE) has the accolade<br />

of being the most expensive embassy building ever built.<br />

was used to conceal the concrete substrate along<br />

the straight edge of the pond. The PJ Carey team<br />

worked closely with the cladding specialist,<br />

marking the penetration locations on a grid, prior<br />

to installation of the first fix. With the first fix<br />

bracket in place, each penetration was sealed<br />

using Firestone’s QuickSeam FormFlash and the<br />

penetrations were checked by Firestone’s<br />

technical team, using compressed air to verify the<br />

seal. The second element of the bracket could<br />

then be installed in preparation for installation of<br />

the cladding panels.<br />

4.<br />

The EPDM membrane installation required a<br />

complex variety of details and penetrations and<br />

Firestone’s technical team trained the installation<br />

crew and visited the project several times to<br />

troubleshoot on specific detailing challenges.<br />

5.<br />

The tricky detailing involved in the EPDM<br />

membrane installation included 44 ornamental<br />

32 TC JULY <strong>2018</strong>

scuppers that act as an overflow to manage the<br />

water level in the pond; outlets where the water is<br />

supplied into the pond from the building’s mains<br />

and rainwater harvesting systems; 15 drainage<br />

outlets of various sizes around the pond’s internal<br />

perimeter; various steps and corner details and a<br />

twin dwarf wall around the curved edge.<br />

Firestone’s QuickSeam FormFlash – an uncured<br />

EPDM membrane factory-laminated to<br />

QuickSeam tape – was used to help form all<br />

“The contractor’s team lapped the GeoGard<br />

EPDM membrane over coving that was installed<br />

around the perimeter of the pond basin, bringing<br />

it down from the vertical surface and adhering<br />

it to the coving”<br />

these details on site.<br />

6.<br />

To create the base of the pond, PJ Carey<br />

compacted the excavated surface and laid a<br />

50mm layer of bedding sand, followed by a<br />

geotextile layer and finally the GeoGard EPDM<br />

membrane. The contractor’s team lapped the<br />

GeoGard EPDM membrane over coving that was<br />

installed around the perimeter of the pond basin,<br />

bringing it down from the vertical surface and<br />

adhering it to the coving. The GeoGard EPDM was<br />

also lapped up the coving and a third layer of<br />

GeoGard EPDM was applied over the 500mm lap<br />

to create a very robust seal.<br />

7.<br />

Thanks to the size and complexity of the<br />

pond, the project took more than eighteen months<br />

to complete!<br />

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

GeoGard EPDM membrane in the planter areas of the pond.<br />

Contact Firestone<br />

01606 552026<br />

www.firestonebpe.co.uk<br />

@FirestonebpUK<br />

Our mission:<br />

“To provide standards and<br />

guidance to our members,<br />

<br />

businesses and householders,<br />

<br />

skilled, professional sector<br />

<br />

industry.”<br />

Find out more at nfrc.co.uk<br />

@TheNFRC<br />

JULY <strong>2018</strong> TC 33

Fixings & Fasteners<br />


By Jason Wood, Contracts Director at Fixing Point.<br />

Building a constructive relationship with your fixings and fasteners supplier is crucial to the<br />

overall success of a project. Contractors should always seek advice from their supplier on<br />

technical performance specifications. Understanding the intended application of products is<br />

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

key questions to ensure your project runs as smoothly as possible.<br />

“It’s important to<br />

understand how much<br />

force a fixing can<br />

withstand and its<br />

resistance to corrosive<br />

elements”<br />

Q: What type of fixing should be used for a<br />

build up into a particular substrate?<br />

When working with a particular substrate it’s crucial<br />

that the correct fixings are used for the individual<br />

application, as these are the key components that<br />

secure the structure for its lifespan.<br />

For example, in most building structures a roof<br />

will be more affected by wind uplifts than a wall,<br />

so roof fixings would normally require a larger<br />

washer than wall fixings.<br />

The ultimate pull out grade of a particular fixing<br />

will also change depending on the final thickness<br />

or type of material it is going into – such as thin<br />

or thick steel – so providing all the information<br />

about the building materials and construction to<br />

your supplier is vital.<br />

Q: What is the best fixing for drilling into a<br />

particular thickness of material?<br />

Specifying the thickness of your material is<br />

critical to ensuring the correct fixing is chosen.<br />

For example, will you be using light (1.2mm-<br />

4mm) or heavy steel (5+mm)?<br />

It is important to provide all the information about<br />

the building materials you intend to use to your<br />

supplier so appropriate recommendations can be<br />

made.<br />

Q: What type of fixing will provide the best<br />

protection from increased weather<br />

exposure?<br />

Using the incorrect fixing could not only cause<br />

damage to the building; it could pose a serious<br />

risk to health and safety.<br />

Considering the environment of a building is vital<br />

when selecting the appropriate fixings and<br />

fasteners for construction as the local and<br />

immediate surroundings will influence any<br />

recommendations.<br />

For example, coastal and high wind locations<br />

have a higher risk of structural damage and<br />

corrosion exposure compared to other areas.<br />

Therefore, it’s important to understand how much<br />

force a fixing can withstand and its resistance to<br />

corrosive elements.<br />

Q: What type of warranty and guarantees<br />

should I expect with fixings?<br />

The warranty and guarantee of fixings and<br />

fasteners can vary significantly from product to<br />

product and purchasers must decide whether a<br />

fastener life expectancy is suitable for their<br />

particular application.<br />

However, it’s important to note that if products are<br />

not used as recommended or in an unsuitable<br />

environment, any guarantee may be rendered void.<br />

Because of this, it’s important that contractors<br />

work closely with their suppliers to select the<br />

right product for their environment and get the<br />

most out of their warranty.<br />

At Fixing Point, we also offer life expectancy<br />

statements that are tailored to the specifics of a<br />

project. If you’re working on a particularly complex<br />

project, this should be discussed with your<br />

supplier so you can fully understand your options.<br />

Q: What benefits does a stainless steel<br />

fixing have over a carbon steel fixing?<br />

Stainless steel is much more durable than carbon<br />

and can ensure the overall stability of a structure<br />

is maintained over time.<br />

As carbon is much cheaper than stainless steel,<br />

it can be tempting for contractors to opt for this<br />

solution, but cutting costs can negatively impact<br />

the long-term quality of a structure’s fixings.<br />

Stainless steel has a significantly longer<br />

guarantee than carbon steel and is therefore<br />

more beneficial for ensuring a project’s longevity.<br />

Guarantees are produced on a job to job basis<br />

ensuring the corrosive factors of a particular<br />

environment are taken into account.<br />

Q. Are you able to advise on the correct<br />

fixings and procedures during the<br />

construction phase of a project?<br />

Ensuring you have support from your supplier for<br />

the duration of a project is essential to resolving<br />

any on-site application problems.<br />

Maintaining regular contact and updating them<br />

with information on the materials you are using at<br />

each stage will mean they can offer you<br />

appropriate advice throughout.<br />

Your supplier should also be able to advise on the<br />

performance of a fixing, such as pull out values,<br />

tensile and shear strengths. Specific<br />

requirements should then be discussed with your<br />

structural engineer.<br />

Contact Fixing Point<br />

01242 265100<br />

www.fixingpoint.com<br />

@FixingPoint<br />

34 TC JULY <strong>2018</strong>

Focus...<br />

on results<br />

When you need a reliable solution, you need a team behind you with<br />

experience, dedication and quality unrivalled in the delivery of industry<br />

leading products. At SR Timber we FOCUS on:<br />

n Product quality and distribution<br />

n Sustainability, Certification and British Standards<br />

n Continued investment and ranges<br />

With decades of experience, our team is more<br />

passionate than ever, offering you expertise,<br />

independent advice, experience and industry support.<br />

TEL: 01623 446 800<br />

sales@sr-timber.co.uk<br />


Upstands<br />


Stephen Cleminson, SIG Design & Technology’s Technical Director, highlights best<br />

practice for upstand design.<br />

Acommon question our team is asked is:<br />

“What should the upstand be on a flat<br />

roof?” followed by, “What if I haven’t got<br />

150mm?” This article is about why upstands exist<br />

and how you can avoid asking the second<br />

question.<br />

Why do we need flat roof upstands?<br />

The requirement for flat roof upstands is set out<br />

in the British Standard BS 6229:2003 Flat roofs<br />

with continuously supported coverings<br />

(https://www.thenbs.com/PublicationIndex/docu<br />

ments/details?Pub=BSI&DocID=263160)<br />

See section 7, p12. This requires that:<br />

“The design of drainage falls should ensure that<br />

the continuity of the waterproof covering is<br />

maintained for a vertical height of 150mm above<br />

the finished roof level at all abutments, door<br />

openings and parapets.”<br />

Rainwater can collect to quite a depth on a roof<br />

during heavy storms. An upstand, be it against a<br />

parapet, penetration or facade,<br />

ensures that the<br />

waterproofing does its<br />

job and that exposed<br />

brickwork, external<br />

cladding or other<br />

building elements are<br />

not flooded or saturated.<br />

How to deal with level<br />

thresholds and exceptions<br />

to the 150mm rule<br />

The SPRA Design Guide 2016<br />

(http://www.spra.co.uk/wp-<br />

content/uploads/2017/06/2-S01-<br />

16DesignGuide.pdf) describes an exception<br />

regarding balconies and terrace access. See p29,<br />

Access to Balcony or Terrace:<br />

The requirement of a 150mm waterproofing<br />

upstand is fundamental to reliable detailing.<br />

However, working with building insurers and the<br />

residential sector, SPRA is aware of the<br />

requirement for unimpeded access to balconies<br />

and roof-level terraces in many designs. In this<br />

situation only, the requirement has been<br />

reduced to 75mm at the opening, provided that<br />

the following conditions are met:<br />

• Rapid removal of rainwater across the width<br />

of the opening, by including a proprietary<br />

Left: This shows a great example of<br />

how NOT to do an upstand to a<br />

penetration, with a plastic bag<br />

and sticky tape.<br />

drainage channel in<br />

front of the threshold.<br />

• The waterproof<br />

membrane extends<br />

150mm height in the door<br />

reveal and roof / abutment wall<br />

adjacent.<br />

• The waterproof membrane flashing extends<br />

fully below the door frame bottom rail and is<br />

sealed to it.<br />

• A horizontal gap of minimum 10mm is<br />

maintained between frame front edge and<br />

drainage channel.<br />

Four possible ways to deal with<br />

upstand issues<br />

1. Consider localised drop gutters. However, if you<br />

eat into the insulation to achieve this, you may<br />

create a cold spot with condensation issues, or<br />

you might not achieve the required U-values in<br />

some areas. There is also more detailing and<br />

changes of direction to consider regarding the<br />

installation.<br />

2. It may be possible to change the insulation<br />

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

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

36 TC JULY <strong>2018</strong>


Upstands<br />

type to one with a better U-value (for example,<br />

changing tissue-faced to foil-faced) for a better<br />

performing insulant. But you do need to be aware<br />

of the knock-on effects. For example, say you<br />

decide to use a bonded membrane – which<br />

traditionally uses tissue faced insulation, then<br />

changing to a foil faced insulation may necessitate<br />

a change to a mechanically fixed membrane.<br />

3. Consider an under and over insulation solution;<br />

to move part of your insulation to below the Vapour<br />

Control Layer, where possible. But you do need to<br />

be careful and ensure a full U-value and interstitial<br />

condensation risk analysis is undertaken to confirm<br />

that moving some insulation below the VCL to gain<br />

height above the membrane will not create a<br />

condensation problem. Make sure you do the sums<br />

so not to actually make the situation worse with<br />

your solution!<br />

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

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

across the parapet. By going continuously over<br />

the parapet and into a drip, the upstand is<br />

effectively only acting as a rain-check.<br />

These examples show you need an all-round<br />

knowledge of roof design to know what can be done<br />

with layers and levels and products to help you<br />

achieve compliance in any particular situation.<br />

“You need an all-round<br />

knowledge of roof<br />

design to know what<br />

can be done with layers<br />

and levels & products”<br />

4. It may be possible to convert the upstand into<br />

a rain-check. You could take the waterproofing up<br />

75mm, right across the cavity and have a drip<br />

Remember, this standardised approach may not be<br />

suitable for your project. Our experts can help you<br />

with design advice – feel free to consult us.<br />

Contact SIG Design & Technology<br />

0844 443 4778<br />

www.singleply.co.uk/perfectroof/<br />

@SIGDesignTech<br />


At the President Kennedy Academy in Coventry, an 85m² application of Marvault, a<br />

continuous vault rooflight system from Brett Martin Daylight Systems, has helped to<br />

deliver exceptional levels of diffused daylight into communal areas of the school.<br />

Built as part of the Priority School Building<br />

Programme and replacing a 1960’s school<br />

building, the new three-storey secondary<br />

school in Holbrooks has a floor area of more than<br />

11,000m² and serves approximately 1,600<br />

students. With the academy’s central areas<br />

requiring a natural light source to optimise<br />

internal environment conditions, the Marvault<br />

system provided the optimum combination of<br />

high light transmission and UV protection, whilst<br />

having a positive impact on students’ wellbeing.<br />

Glazed in triple skin opal polycarbonate and<br />

featuring trickle vents in the kerb, the eight vaults<br />

were installed by Advanced Roofing & Cladding.<br />

Offering ease of installation, the rooflight system<br />

laps together to form rooflights runs, which at the<br />

academy enabled runs of more than 21 metres in<br />

length and spanning 1.5 metres. The economic,<br />

simple-to-fit, barrel vault system complemented<br />

the new facility’s high quality external aesthetic<br />

whilst helping to reduce energy demands.<br />

Manufactured with an aluminium frame and<br />

powder coated in a semi-gloss white colour to<br />

meet the client’s requirements, the fully thermally<br />

broken skylight system was fabricated and<br />

precision-engineered at Brett Martin’s factory in<br />

Coventry, before being assembled and installed<br />

on site by the specialist contractor.<br />

With a maximum span of 9 metres and no<br />

restriction on length, the versatile Marvault<br />

rooflights are suitable for use on flat, curved, low<br />

pitch and standard pitch roofs making them ideal<br />

for a range of applications from leisure, sporting<br />

facilities and commercial buildings through, to<br />

education and health centres.<br />

Advanced Roofing & Cladding<br />

installed Brett Martin’s<br />

Marvault system at the<br />

President Kennedy Academy.<br />

Contact Brett Martin Daylight Systems<br />

024 7660 2022<br />

www.brettmartin.com<br />

@BMDaylight<br />

38 TC JULY <strong>2018</strong>

SEE US AT<br />




The Lincoln clay pantile features fl exible open gauge<br />

technology with a new fl at batten locator.<br />

Shaped with an elegant s-curve design and thin leading<br />

edge, the clay pantile is engineered for pitches as low<br />

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And of course, Lincoln clay pantiles fully comply with<br />

BS 5534 and NHBC Standards.<br />

Discover more smart thinking (and order free samples) at<br />

marleyeternit.co.uk/lincoln<br />

Or call us on 01283 722588<br />

Marley Eternit. The roof system others look up to.

How To:<br />


By Stuart Hicks of Kemper System.<br />

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

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

effective ways to waterproof a pipe penetration is using a fleece reinforced liquid applied system.<br />

Durable and tear resistant, these systems can accommodate awkward roof details such as penetrations<br />

without the need for additional mechanical fixings. For contractors considering using a liquid<br />

waterproofing system for this application, here’s a guide to what’s involved.<br />

“Use a brush or nylon<br />

roller to ensure all air<br />

bubbles and creases<br />

have been removed”<br />

Step 1:<br />

Cut a piece of<br />

fleece to wrap<br />

the pipe using the<br />

correct<br />

1<br />

dimensions. The<br />

length should be the<br />

circumference of the pipe plus 50mm. The height<br />

should be a minimum of 150mm plus 50mm,<br />

which needs to be cut into fins to suit the<br />

circumference.<br />

Step 2:<br />

Wrap the pipe<br />

with the first<br />

piece of fleece to<br />

give a visible 50mm<br />

2<br />

vertical overlap and<br />

making sure each “fin” is at right angles to the<br />

pipe.<br />

Step 3:<br />

Cut a square<br />

piece of fleece for<br />

the collar and<br />

round off the<br />

3 (a)<br />

corners. The collar<br />

should be the diameter of the<br />

pipe plus 250mm.<br />

Place the fleece<br />

centrally over the<br />

top of the pipe.<br />

Draw a circle<br />

3 (b)<br />

using the inside of<br />

the pipe and then<br />

cut out. This<br />

ensures the hole<br />

for the pipe is<br />

3 (c)<br />

approximately 10mm<br />

less than the diameter of<br />

the pipe. Place the collar over the pipe to ensure<br />

a snug fit.<br />

Step 4:<br />

To ensure a neat<br />

appearance,<br />

mask the pipe<br />

above the<br />

4<br />

application area and<br />

the surrounding deck, and then<br />

remove the fleece.<br />

Step 5:<br />

Dip the fleece<br />

wrap in the resin<br />

to completely<br />

saturate and then<br />

5<br />

place in position. Apply<br />

resin to the substrate around<br />

the pipe.<br />

Step 6:<br />

Dip the collar in the resin to completely saturate<br />

and place in position by sliding down over the<br />

pipe and fleece wrap.<br />

Use a brush or nylon roller to ensure all air<br />

bubbles and creases have been removed.<br />

6<br />

Remove all of the masking tape to present a neat,<br />

professional job.<br />

To ensure the installation is a success, it is also<br />

vital that contractors get advice and / or training<br />

from the manufacturer of the liquid waterproofing<br />

system before applying it.<br />

“The performance of<br />

any roof can be<br />

compromised by a pipe<br />

penetration. If it is not<br />

waterproofed<br />

effectively, it can cause<br />

leaks, damage to the<br />

building and<br />

unnecessary costs”<br />

Contact Kemper System<br />

01925 445532<br />

www.kempersystem.co.uk<br />

@KemperSystemUK<br />

40 TC JULY <strong>2018</strong>

Green Roofs<br />



Mark Harris, Chairman of the Green Roof Organisation (GRO), talks through some of the<br />

key challenges when installing a green roof system.<br />

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

significantly both in the design of the green roof system options and the methods of procurement.<br />

Today, a wide variety of different plant types are regularly specified within biodiverse roof<br />

systems and green roofing packages are installed by either roofing contractors, specialist green roof<br />

contractors or specialist landscaping contractors.<br />

“The need for cranage<br />

should be discussed<br />

early with the main<br />

contractor”<br />

However, the fundamental rules of installation practice and the installation challenges remain the same<br />

whether the green roof system is of an Extensive or Biodiverse nature.<br />

7<br />

key considerations to make when installing a green roof:<br />

Design & Specification<br />

Pay close attention to this, whilst ‘green roof’ is a<br />

generic term, it covers a myriad of options<br />

especially when it comes to plant species<br />

requirements. This is particularly true of London<br />

where the London Plan informs the local<br />

environmental requirements and ecologists<br />

regularly require specific plant mixes to replicate<br />

the original flora at a specific site. With the new<br />

Mayors of Manchester, Birmingham, Sheffield and<br />

other Cities being given the same planning<br />

powers as the Mayor of London, the industry<br />

expects to see the demand for specific local<br />

planting schemes to increase across the UK<br />

dramatically over the next ten years.<br />

Another key item is the height of the<br />

waterproofing at upstands and penetrations,<br />

which must extend 150mm above the finished<br />

green roof height – not the waterproofing height.<br />

Lifting<br />

Main contractors always want the crane down as<br />

soon as possible, but green roofs require bulky,<br />

heavy materials to be lifted to roof level for<br />

distribution. The need for cranage should be<br />

discussed early with the main contractor, and the<br />

point should be made that installing the green<br />

Above: Green roofs at the Scottish Parliament building at Holyrood, Edinburgh.<br />

roof is the equivalent to installing a concrete<br />

deck, and therefore the installation process<br />

shouldn’t be considered as part of the relatively<br />

light weight roof waterproofing system.<br />

Drainage boards<br />

These are designed to be installed one way up<br />

only; make sure the installation team know which<br />

way a specific board should be laid – some are<br />

flat sheets and others come on rolls.<br />

The team should know whether the drainage<br />

boards are butt jointed or overlapped at the sides<br />

and ends. The drainage boards should also run<br />

edge to edge of the roof to ensure correct<br />

drainage.<br />

Growing medium / substrate<br />

This typically comes in bags weighing from 20kg<br />

to 1.25 tonnes, with a 1.25 tonne bag typically<br />

covering circa 20m² at 50mm depth: so, there<br />

will be plenty of them to lift to cover a 300m² roof<br />

area. With wildflower systems typically requiring<br />

120mm – 150mm substrate depth the coverage<br />

will reduce significantly.<br />

When installing the team need to know what depth<br />

to install at and what settlement to allow,<br />

42 TC JULY <strong>2018</strong>

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Green Roofs<br />

typically between 10% and<br />

20% depending on<br />

product. As all<br />

specifications will be<br />

for a finished settled<br />

depth, enough<br />

material needs to be<br />

allowed and installed<br />

to meet this requirement<br />

post settlement.<br />

Once installed the substrate<br />

should be irrigated to saturation prior<br />

to the installation of the planting.<br />

Plant installation<br />

This will vary depending on whether the<br />

specification is for a pre-grown blanket, pregrown<br />

plug plants or seeds. Pre-grown blankets<br />

should be installed within a maximum of 36 hours<br />

of delivery – sooner if the weather is warm – as<br />

they will start to ‘cook’<br />

whilst rolled up<br />

destroying plant life.<br />

Plugs should be<br />

installed into the<br />

substrate at the<br />

m² quantity<br />

specified and in<br />

the mix percentage<br />

required by the<br />

specification. Seeds<br />

should be mixed with sand at<br />

the weight specified and hand cast<br />

across the roof.<br />

Once installed the planting should be thoroughly<br />

irrigated to aid establishment. Typically between<br />

April and October temporary irrigation will be<br />

required for 6 to 8 weeks, but warmer spells or<br />

unusually warm weather outside of these<br />

months may increase the irrigation requirement.<br />

“Pre-grown blankets<br />

should be installed<br />

within a maximum of<br />

36 hours of delivery –<br />

sooner if the weather is<br />

warm”<br />

Gravel margins<br />

Typically, 20/40mm rounded ballast is specified<br />

at perimeters and penetrations. This serves three<br />

key purposes: fire breaks, erosion control and<br />

vegetation breaks. The GRO Code provides<br />

guidance on suitable widths for these as will the<br />

specification.<br />

Rainwater outlets<br />

These should be accessible for future ongoing<br />

annual maintenance, typically by an inspection<br />

chamber that should be the same depth as the<br />

green roofing system.<br />

“Typically, 20/40mm rounded ballast is specified<br />

at perimeters and penetrations. This serves<br />

three key purposes: fire breaks, erosion control<br />

and vegetation breaks”<br />

Contact the Green Roof Organisation<br />

020 7638 7663<br />

www.nfrc.co.uk/green-roof-installations<br />

Top and left: the fundamental rules of installation practice<br />

and the installation challenges remain the same whether the<br />

green roof system is of an Extensive or Biodiverse nature.<br />

Below: Image courtesy of Mike Cottage, The Urban Greening<br />

Company.<br />

44 TC JULY <strong>2018</strong>

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Roof Windows<br />


It is vital that the roof window you choose is installed correctly to ensure a weathertight<br />

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

contractors need to consider.<br />

Filling the gap<br />

If an un-insulated gap is left between the window<br />

and the rafters, it can be difficult and costly for<br />

homeowners to keep a comfortable temperature<br />

in the home, as water and air can pass through<br />

and make rooms cold and damp. Due to the small<br />

space between the window and the rafters, it can<br />

be time consuming and difficult for installers to<br />

create a fully watertight and insulated fit. The<br />

solution is to use an Insulating Foam Collar (IFC).<br />

A rebated foam profile manufactured to fit the<br />

window frame, the IFC offers superior insulation,<br />

a watertight seal and has the advantage of<br />

reducing installation time to approximately three<br />

minutes per window. An IFC is included as<br />

standard with our Ultima windows.<br />

Membrane materials<br />

When installing a window, it is essential to repair<br />

the roofing membrane to restrict air and water<br />

ingress. An installer knows this process requires<br />

a high level of accuracy to ensure a water and<br />

airtight seal. To help with this, when cutting a<br />

hole in the original membrane for the window,<br />

installers shouldn’t cut back to the rafters and<br />

battens – but instead leave enough to be able<br />

staple it back to the woodwork in order to prevent<br />

water ingress. The membrane must also be used<br />

to form a gutter system that has a sufficient fall<br />

in it to catch water and direct it away from the<br />

opening in the roof and prevent costly interior<br />

damage.<br />

For added security, an Underfelt Foil Collar can be<br />

used. The single piece of stretchable fabric<br />

removes any need for cutting and joining<br />

membrane material directly around the window.<br />

Simply slide this underneath the battens and fix<br />

securely for a water and airtight barrier in a quick<br />

15-minute process.<br />

Once the frame is installed but<br />

before it is securely fixed in<br />

place, the sash should be fitted<br />

back into the frame to check the<br />

alignment. A slightly misaligned<br />

sash or frame fit will let water and air<br />

in. For the frame, if the gap down the side<br />

between the sash and frame is wider at the top<br />

than the bottom, an adjustment can be made by<br />

carefully applying pressure to the outer edge of<br />

the frame with a crowbar to square up the<br />

window.<br />

In addition, when the window is open inspect the<br />

bottom between the sash and the frame – this<br />

should be even the whole way across. If it’s not,<br />

use a wedge to lift the exterior bracket on the<br />

opposite side to where the opening is wider. This<br />

will bring it back into alignment.<br />

“Water ingress can<br />

happen if there is<br />

space left where the<br />

tiles ‘kick’ as they pass<br />

over the flashings”<br />

Tight tiling and flashing<br />

When replacing the tiles, they need to pass over<br />

the flashings to ensure the water runs away from<br />

the window. Water ingress can happen if there is<br />

space left where the tiles ‘kick’ as they pass over<br />

the flashings. ‘Kicking’ can be minimised by<br />

removing tile nibs if necessary and tiles can be<br />

fitted closer to the flashings by fixing them to the<br />

battens with screws.<br />

It is also recommended to slit the foam right<br />

above each tile to avoid the gap between the<br />

foam and tile junctions. It’s likely that tiles will<br />

also need to be cut to ensure a<br />

perfect fit – when cutting, be<br />

mindful that the gap is within<br />

the recommended tolerances<br />

(30-60mm on the sides, 60-150 on<br />

the top).<br />

A tried and tested product<br />

Choosing a product that has been thoroughly<br />

tested will provide peace of mind. The UK sees an<br />

average of 133 days of rain or snow per year and<br />

the British weather is becoming more<br />

unpredictable, with severe storms previously<br />

considered to be a 1 in 100 year event now<br />

occurring much more frequently. An example of<br />

this is Storm Ophelia in October 2017 during<br />

which winds of up to 97mph were recorded.<br />

Ensuring the chosen window has been designed<br />

to withstand these conditions is vital. For<br />

example, our Ultima window has been tested for<br />

wind speeds of up to 104 mph (the equivalent of<br />

a Category 1 hurricane) and 600 litres of water<br />

falling in just one hour – the same as a year’s<br />

rainfall per square metre in London.<br />

Flying debris is also a risk during a storm so an<br />

impact resistant outer pane and laminated inner<br />

pane will reduce the chance of damage and<br />

improve safety. For further peace of mind, seek a<br />

window where manufacturers can provide a<br />

warranty – such as a lifetime warranty against hail.<br />

The seal between the roof and window is vital to<br />

avoid issues for the homeowner. Carefully installing<br />

a high quality roof window will protect the property<br />

from even the most severe British weather.<br />

Contact Dakea<br />

0203 598 1165<br />

www.dakea.com<br />

@Dakea _UK<br />

46 TC JULY <strong>2018</strong>

SEE US AT<br />


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

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

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

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

have a safe exit out onto the roof.<br />

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

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

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

incorporating<br />



Bilco UK and Howe Green are part of the ERA Group

Rainwater Systems<br />



Tony Wereszczynski, Technical Director at Marley Alutec, gives his top tips for problem<br />

free selection and installation of eaves drainage systems.<br />

Calculate for a rainy day<br />

It is crucial to ensure the capacity of the gutter<br />

meets the requirement for the building. The flow<br />

rate of the gutter varies depending on the profile,<br />

size and fall at which the gutter is fitted.<br />

In order to ensure the correct system is chosen,<br />

the calculation of the roof area predicted rainfall<br />

intensity must be established at the design stage.<br />

Reference should be made to BS EN 12056-3:<br />

2000 which provides detailed information on<br />

rainfall throughout the UK, by geographical<br />

location and frequency of occurrence. The<br />

guidance given in the standard recommends that<br />

eaves gutters are sized to ensure the calculated<br />

peak run-off does not exceed 90% of the gutter<br />

capacity.<br />

However, the increasingly unpredictable nature of<br />

the UK weather must also be taken into account,<br />

as heavy rainfall and extreme weather events are<br />

occurring more frequently. Therefore, it is<br />

considered best practice to factor in additional<br />

capacity when designing a roof drainage system<br />

to ensure it can cope with higher levels of rainfall.<br />

Joint durability<br />

With a lifespan of 50 years or more and minimal<br />

maintenance throughout their lifespan, aluminium<br />

rainwater systems provide a long lasting, durable<br />

alternative to PVC or cast iron. However, ensuring<br />

a secure connection between each component is<br />

crucial. Joint sealing must not<br />

be carried out in wet weather,<br />

or in temperatures below<br />

5°C (due to frost, ice or<br />

condensation on the<br />

surface) or above 40°C (as<br />

the sealant may not cure<br />

correctly under these conditions).<br />

Joint surfaces must also be completely clean<br />

and dry. Some dirt and grease may be difficult to<br />

see – use a clean cloth and solvent cleaner to<br />

remove all traces.<br />

The perfect fix<br />

To ensure long-term durability, it is also crucial to<br />

ensure that the fixing components used are<br />

capable of providing the necessary support. They<br />

must be non-corrosive and of a compatible<br />

material to ensure that no electrolytic corrosion<br />

occurs. Only the recommended austenitic<br />

stainless steel screws must be used to fix the<br />

gutters, whether direct, fascia or rafter bracket<br />

fixed.<br />

Make sure the system manufacturer’s<br />

recommended fixings are used at all times.<br />

Plain sailing for refurbishments<br />

When replacing existing systems, fascias and<br />

soffits are often also replaced to accommodate<br />

the new gutters. Unlike UPVC soffits and fascia<br />

systems, composite aluminium soffit and fascias<br />

can be fixed over timber fascias as long as they<br />

are sound and rot free.<br />

Composite aluminium products such as our Evoke<br />

range, for example, can be installed directly onto<br />

the building and will support the weight of gutters<br />

without the requirement of backing boards.<br />

Extremely light and strong, they<br />

can be adapted on site with<br />

basic carpenter tools to<br />

create bespoke designs<br />

including large overhangs<br />

and curved rooflines. This<br />

also means that modifications<br />

can be made during installation,<br />

avoiding costly delays.<br />

Reach new heights<br />

Installing gutters involves working at height,<br />

which means work must be compliant with Work<br />

at Height Regulations 2005. As part of the<br />

regulations, the work must be properly planned<br />

and organised, risks assessed and appropriate<br />

work equipment such as scaffolding or raised<br />

platforms must be selected and used.<br />

When working with heavier gutters such as cast<br />

iron, which are typically upwards of 10kg per<br />

1.8m length, the installation can often be a two<br />

person job, increasing the risks of working at<br />

height.<br />

Aluminium gutters are a lightweight alternative.<br />

Approximately 65% lighter than cast iron they<br />

can be installed just as easily as PVC systems,<br />

with no specialist tools or skills required. This<br />

makes them much easier to manage on site,<br />

though of course, Work at Height Regulations<br />

2005 and other health and safety protocols<br />

should always be observed.<br />

Contact Marley Alutec<br />

01234 359438<br />

www.marleyalutec.co.uk<br />

@marleyalutec<br />

48 TC JULY <strong>2018</strong>

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Kemperol Liquid Waterproofing

Project Focus<br />


Total Contractor hears about BEMO’s role in the roof<br />

development for Wimbledon’s famous Court No.1.<br />

As a trusted supply chain partner of Prater,<br />

BEMO has played an integral part in the<br />

roof development on No.1 Court at The All<br />

England Lawn Tennis Club (AELTC) in Wimbledon.<br />

Such a high profile project required a collaborative<br />

approach from everyone involved in order to meet<br />

the client’s brief – from the design phase, to the<br />

creation of a complex programme structure, right<br />

through to the level of quality delivered onsite –<br />

and BEMO continues to work closely with Prater to<br />

ensure a successful completion.<br />

Due to the need for the AELTC in Wimbledon to be<br />

accessible every year for the celebrated tennis<br />

Championships, it was decided that the project<br />

would be divided into three separate phases.<br />

Phase two of the project is nearing its conclusion,<br />

in time for the <strong>2018</strong> Championships, with trades<br />

returning to site in August to begin the final phase.<br />

BEMO’s scope of works on the project comprises<br />

both the engineering and the supply of a standing<br />

seam roof system. For the Outer Roof, the design<br />

involved a fully tapered scheme with roof sheets<br />

reaching up to 17 metres in length. For the Inner<br />

Roof, the design involved a combination of<br />

parallel and tapered panels to accommodate the<br />

complex geometry.<br />

Bespoke Solution<br />

This complex roof design required detailed<br />

analysis of the structural and surface models<br />

generated by KSS Architects and Thornton<br />

Tomasetti Cladding Consultants.<br />

The steel structure provided a facetted surface,<br />

while the design intent required a smooth external<br />

roof surface. In order to overcome the varying<br />

distances between the structure and external<br />

surface, the BEMO-Flex system was specified,<br />

which provides a mass-customised sub-structure.<br />

The installation of the BEMO-Flex system required<br />

Prater to install the decking panels and lower<br />

section of BEMO-Flex before the BEMO team then<br />

surveyed the position of the installed modules to<br />

ensure complete accuracy and to eliminate<br />

steelwork tolerances. The data taken from the<br />

survey was entered into the Rhino model and the<br />

second part of the BEMO-Flex module was then<br />

designed to match up to the modelled roof surface.<br />

Through CNC manufacturing processes, the<br />

BEMO-Flex modules were fabricated in<br />

accordance with the model and delivered to site<br />

within a matter of days to allow continuous<br />

installation. This process ensured that the halters<br />

were in the desired position to take the standing<br />

seam panels, which had been produced well in<br />

advance of construction.<br />

The newly engineered BEMO-Flex system<br />

provided a customised sub-structure between the<br />

decking and standing seam surfaces, allowing the<br />

varying distances and angles required to be<br />

accommodated.<br />

Let it rain<br />

A key element of the No.1 Court project is the<br />

addition of the retractable roof – providing the<br />

AELTC with another space where play doesn’t<br />

have to be affected by the weather. With the<br />

inclusion of a moving roof element, the steel<br />

structure had to be designed to move when the<br />

retractable roof is opened and closed.<br />

It was crucial that the design ensured that the<br />

standing seam roof could accommodate such<br />

movement. Both BEMO and Prater were involved<br />

in a number of design meetings in advance of<br />

work beginning onsite, to eliminate the risk of<br />

problems arising and changes being required<br />

within the construction stage of the project.<br />

Just in time<br />

Working on a restrictive site with minimal storage<br />

Prater and BEMO worked closely together on the new<br />

retractable roof at Wimbledon’s famous Court No. 1.<br />

space, the logistics of materials arriving on site<br />

can often prove challenging. To overcome this,<br />

BEMO worked closely with both Prater and Sir<br />

Robert McAlpine to ensure a detailed programme<br />

was created to suit the site. Materials had to be<br />

delivered in a ‘just in time’ fashion, with nothing<br />

arriving more than three days in advance of its<br />

installation.<br />

The success of this approach rested on<br />

punctuality, constant communication and<br />

adherence to set procedures.<br />

Due to the combination of a restrictive site and a<br />

complex design brief, BEMO and Prater worked<br />

together to construct two offsite mock-ups prior to<br />

work starting onsite. Not only did this improve the<br />

understanding of the complexities of the system,<br />

as well as its installation process and how long<br />

that would take, but it also allowed the architect<br />

and AELTC representative to view the proposal.<br />

Having seen the proposal in a physical form,<br />

AELTC were able to approve the product – both its<br />

design and, equally as important, its colour.<br />

Working on such an iconic building, the team had<br />

to include the famous Wimbledon green within<br />

the design for site consistency, ensuring that the<br />

new roof system blended harmoniously into the<br />

existing structure.<br />

Contact BEMO<br />

www.bemoprojectengineeringuk.co.uk<br />

@BEMOsystems<br />

50 TC JULY <strong>2018</strong>


Roofing Updates<br />


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

Blackpool, Lancashire, required urgent repair.<br />

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

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

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

performance and supplied as a complete integrated system of matched components.<br />

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

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<br />

Waterproofing Awards due to the complexity of the roof.<br />

seamless, yet highly durable waterproofing membrane. The roof was extremely complex with detailing<br />

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

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

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

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


Freefoam Building Products has announced the addition of four woodgrain finishes to its<br />

Wide 605mm Soffit Range.<br />

The wide General Purpose Board is becoming a popular choice on many contemporary house<br />

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

customers servicing the Housebuilder.<br />

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

allows for a fully coordinated roofline. www.freefoam.com<br />


Sika Sarnafil has launched a new RIBA accredited Continual Professional Development (CPD)<br />

seminar, ‘Selecting Flat Roofing System to Meet Modern Demands’, for those wanting to<br />

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

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

to attend a seminar<br />

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

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

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

specifying the right flat roofing system, while meeting the appropriate standards and regulations.”<br />


Cembrit Glendyne natural slate has brought the home of fossils to life, by adding<br />

distinctive style, character, and impressive performance to The Etches Collection museum<br />

roof in Kimmeridge.<br />

Glendyne slates were used at The Etches Collection museum and<br />

are tested to BS EN European standard, BS EN 12326-1:2014.<br />

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

Haysom Purbeck Stone, have successfully blended the museum into the surrounding traditional<br />

cottages. The slates allow the design to fit the traditional vernacular whilst its detailing is<br />

contemporary.” www.cembrit.co.uk<br />

52 TC JULY <strong>2018</strong>


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

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

be cool and dry - to maintain well-being and working efficiency.<br />

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

moisture away from the body and keeping you dry.<br />

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

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

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

all day, every day.<br />

Checkout the website and download a digital catalogue at www.snickersworkwear.co.uk<br />


A combination of safety products from Kee Systems have been installed at the Twinings<br />

facility in Andover to provide a first-class edge protection solution for staff members<br />

accessing the rooftop.<br />

Kee safety systems have been independently tested & CE<br />

approved to BS EN 14122-4.<br />

Having reviewed the site and the requirements, Kee Systems supplied and installed 320m of<br />

KeeGuard systems to provide roof edge protection, four access platforms for safe access, eight<br />

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

to provide for safe access while working at height. www.keesystems.com<br />


Alumasc Rainwater, part of Alumasc Water Management Solutions (AWMS), was specified<br />

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

The Royal Edinburgh Hospital includes 185 mental health bedrooms<br />

and accommodates an adult acute mental health inpatient service.<br />

Alumasc’s aluminium Guardian security downpipes were the perfect match for this<br />

contemporary building. The range is purposely designed for high security environments and<br />

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

concealed bracketry and jointing that makes them vandal resistant and anti-climb.<br />

www.alumascrainwater.co.uk<br />


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

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

which have occurred because roofing contractors weren’t aware of flammable elements<br />

on the roof.<br />

TorchSafe Detailing, Guidance Document for Reinforced Bitumen Waterproofing sets out when<br />

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

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

JULY <strong>2018</strong> TC 53

Hackitt Comment<br />



So says the Hackitt Review; Roy Weghorst, Head of<br />

Regulatory Affairs – Fire, at Kingspan, gives his thoughts...<br />

In the March issue of Total Contractor, we<br />

looked at Dame Judith Hackitt’s Interim Report<br />

on the Independent Review of the Building<br />

Regulations and Fire Safety. Now that the final<br />

report has been published, we can see that what<br />

is being called for is what Dame Judith describes<br />

as “A radical overhaul to futureproof the system”.<br />

The review, “Building a Safer Future”, highlights<br />

the many failings that led to the Grenfell Tower<br />

tragedy last June and proposes a revolutionary<br />

approach looking at the entire process involved in<br />

the construction, refurbishment and maintenance<br />

of our buildings. It considers every aspect that<br />

could affect the safety and performance of a<br />

building throughout its whole life cycle, including<br />

quality of build and what happens once it is<br />

occupied, not just how it is designed or the<br />

materials it is made of.<br />

Crucially, the report emphasises the need to stop<br />

thinking in ‘silos’ and to think in terms of systems<br />

– from the integration between the different<br />

elements of each individual building, to who is<br />

responsible for the checks and balances and the<br />

‘golden thread’ of information that will ensure the<br />

continuation of its safety over its lifetime. It also<br />

recognises that prescriptive rules are not the<br />

answer to such a complex issue, particularly in<br />

an environment where materials and technology<br />

are evolving rapidly.<br />

To make sure that the system is indeed<br />

‘futureproof’, the new proposed framework is<br />

therefore outcomes-based, and must be delivered<br />

as a package – “an integrated systemic change<br />

not a shopping list of changes which can be<br />

picked out on a selective basis”. The terms<br />

‘outcomes’, ‘performance’ or ‘risk’ based<br />

approach are used throughout the report. What<br />

this means is that the regulations should focus<br />

on making it clear what the industry needs to<br />

achieve, rather than telling it how it must<br />

achieve it.<br />

There are lots of reasons to have an outcomesbased<br />

approach. It leaves room for innovation<br />

and consideration of other needs, such as energy<br />

efficiency. It recognises that what works well for<br />

one type of construction may be unsuitable for<br />

another. More importantly, it leads to the level of<br />

thought and responsibility that is needed<br />

throughout the whole supply chain to deliver truly<br />

safe buildings.<br />

Overview<br />

The recommendations are focused on multioccupancy<br />

higher risk residential buildings<br />

(HRRBs) that are ten storeys or more in height,<br />

but it is noted that the new framework would also<br />

benefit a wider range of buildings.<br />

A new regulatory framework is set out, together<br />

with clearly defined dutyholder roles, and a new<br />

Joint Competent Authority (JCA) to make sure that<br />

it is followed. The JCA would involve Local<br />

Authority Building Standards, fire and rescue<br />

authorities and the Health and Safety Executive.<br />

The framework is designed to simplify the<br />

requirements and at the same time make them<br />

more robust. It provides better oversight, clear<br />

lines of responsibility, incentives for good practice<br />

and real sanctions for poor practice. It also<br />

involves the most important people – those who<br />

will be living in the building – and provides them<br />

with greater reassurance and an effective way to<br />

raise any issues.<br />

There are nine key areas for reform that are<br />

Recommendation 5.1a: The construction sector and fire<br />

safety sector should demonstrate more effective leadership<br />

in relation to developing a responsible approach to delivering<br />

building safety and integrity.<br />

highlighted in the executive summary of the<br />

report and expanded upon in the ten chapters<br />

that follow.<br />

Outline of the recommendations:<br />

1. The Framework<br />

• New regulatory framework for HRRBs<br />

• New Joint Competent Authority (JCA)<br />

• Mandatory incident reporting mechanism for<br />

dutyholders.<br />

2. Improve the focus on building safety<br />

during design, construction and<br />

refurbishment<br />

• Rigorous and demanding dutyholder roles and<br />

responsibilities<br />

• Series of gateway points to strengthen<br />

regulatory oversight<br />

• Stronger change control process<br />

54 TC JULY <strong>2018</strong>

Note : Plywood Stoped Short<br />

To Ensure Linearlight Flex<br />

Can Be Slotted Through<br />

3mm Aluminium<br />

18 Plywood<br />

Wraped in Vasqueen DPC<br />

T-Section<br />

16mm Bar<br />

M10 Round<br />

Head Socket<br />

Screw BZP<br />

TITLE<br />


Is<br />

Noteest<br />

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

est weight of planter = 150kg<br />

Coordination With External Lighting<br />

To Be Reviewed With Phoenix<br />

Corners To Be Welded And Dressed<br />

Farrin<br />

Unless oth<br />

specified dim<br />

are in mill<br />

angles<br />

decimal dim<br />

± 2m<br />

Cappings - Copings - Fascias<br />

Soffits – Flashings - Bullnose<br />

Free Site Surveyed Measures<br />

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

Hackitt Comment<br />

• Single, more streamlined regulatory route to<br />

oversee building standards<br />

• Rigorous enforcement powers<br />

changes after occupation<br />

• To be used by dutyholders to demonstrate the<br />

safety of the building throughout its life cycle.<br />

3. Improve the focus on building safety<br />

during occupation<br />

• Clear and identifiable dutyholder<br />

• Requirement for dutyholder to present a safety<br />

case to the JCA<br />

• Clearer rights and obligations for residents<br />

• Regulator (JCA) for the whole of the building in<br />

relation to fire and structural safety in occupation<br />

4. Giving residents a voice<br />

• Greater transparency of information on building<br />

safety<br />

• Involvement in decision making through<br />

resident associations / panels<br />

• No risk, independent route for residents to<br />

raise concerns<br />

5. Improved levels of competence<br />

• Overarching body to provide oversight of<br />

competence requirements<br />

• Industry led technical guidance with continuing<br />

Recommendation 4.1a: The dutyholder for a HRRB should<br />

have a statutory duty to proactively provide residents with a<br />

set of information that supports residents to understand the<br />

layers of protection in place to keep their building safe.<br />

oversight from government prescribed<br />

organisation<br />

• Simpler yet more comprehensive regulations<br />

and guidance<br />

6. More robust and transparent<br />

construction products regime<br />

• More effective testing regime with clearer<br />

labelling and product traceability<br />

• Periodic review process of test methods and<br />

range of standards<br />

• More effective market surveillance system<br />

7. Creating a golden thread of information<br />

• Digital records for new HRRBs, to include<br />

8. Tackling poor procurement practices<br />

• Make sure that high safety, low risk options are<br />

prioritised<br />

• Consideration of full life cycle cost<br />

9. Ensuring continuous improvement and<br />

best practice learning through<br />

membership of an international body.<br />

“‘A race to the bottom’<br />

that has too often<br />

become the hallmark<br />

of our industry in<br />

recent years”<br />

A common sense approach<br />

What the Hackitt Review has revealed and<br />

addressed are the underlying issues that allowed<br />

an inappropriate system to be installed, together<br />

with the poor processes and lack of care that<br />

compounded the effects and led to such a tragic<br />

loss of life – a “race to the bottom” that has too<br />

often become the hallmark of our industry in<br />

recent years.<br />

The debate will no doubt continue for many more<br />

months as we move towards actual regulatory<br />

change, “…in the meantime” Dame Judith writes<br />

“industry must start living the cultural shift that<br />

is required”. In much the same way as the<br />

familiar Construction (Design and Management)<br />

Regulations drove a cultural change that<br />

dramatically improved health and safety on site,<br />

the proposals outlined in “Building a Safer<br />

Future” should result in buildings that are safer,<br />

higher performing and better for all, throughout<br />

their whole life.<br />

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

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

Contact Kingspan Insulated Panels:<br />

01352 717 251<br />

www.kingspanpanels.co.uk<br />

@KingspanIP_UK<br />

56 TC JULY <strong>2018</strong>

How To:<br />


By The A. Proctor Group.<br />

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

insulation should in theory improve the thermal performance of a building, the benefits of thicker<br />

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

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

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

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

and cold air is allowed to flow in.<br />

Wraptite was used at the Portsmouth One project.<br />

Our Solution: One way to address this issue is to<br />

install Wraptite, which is a self-adhering solution<br />

that provides airtightness, vapour permeability<br />

and water resistance to the building envelope<br />

quickly and easily. One of its key benefits is that<br />

Wraptite is installed externally which saves on<br />

material and labour costs due to its fast<br />

installation and simple detailing method<br />

compared to internal air barriers. Providing<br />

exterior protection to your project earlier in the<br />

construction process means work on the inside<br />

can also begin sooner. Wraptite Membrane and<br />

the range of Wraptite Accessories are robust<br />

materials that will permanently adhere to almost<br />

any substrate. This makes Wraptite a flexible and<br />

simple solution for achieving airtightness on both<br />

on-site and off-site projects.<br />

A step-by-step guide to installing Wraptite:<br />

1. Wraptite Membrane can<br />

be installed<br />

horizontally – 2-person<br />

method (see right) or<br />

vertically – 1-person<br />

method (see right, below)<br />

a) Pre-cut the membrane<br />

to the required length<br />

then re-roll with the<br />

release paper facing<br />

outwards.<br />

b) Starting in a corner and using a chalk line for<br />

guidance, peel back the release paper and apply<br />

the adhesive surface to the prepared substrate.<br />

c) Using a hand roller or stiff brush, smooth out<br />

any air bubbles, releasing the air by starting from<br />

the middle and working your way towards the<br />

edges.<br />

2. Wraptite Tape, Corners and Liquid Flashing can<br />

be used for sealing gaps between rigid insulation<br />

panels, and detailing around penetrations,<br />

windows and doors.<br />

a) Tape should be pre-cut before removing the<br />

release liner and the adhesive side handled as<br />

little as possible. Split Liner options are available<br />

for Wraptite Tape to make this easier (see below).<br />

b) Fill gaps around door and window frames with<br />

Wraptite Liquid Flashing and allow to cure (see<br />

below), then finish with Wraptite Corners and<br />

Tape (top, next column).<br />

c) Gaps around wall penetrations that are greater<br />

than 6mm are prefilled with<br />

Wraptite Liquid<br />

Flashing and<br />

allowed to cure<br />

(see right), then,<br />

after the Wraptite<br />

Membrane has been<br />

installed, a second layer of<br />

Liquid Flashing is<br />

applied to seal<br />

between the<br />

membrane and the<br />

penetration<br />

(see right).<br />

*The guidance provided here<br />

has been summarised. Please consult The A. Proctor Group<br />

website for complete installation advice.<br />

Contact The A. Proctor Group<br />

01250 872 261<br />

www.proctorgroup.com<br />

@proctorgroup<br />

Left and above: finish with<br />

Wraptite Corners and Tape.<br />

“Wraptite is installed<br />

externally which saves<br />

on material and labour<br />

costs”<br />

58 TC JULY <strong>2018</strong>


Cladding Updates<br />

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


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

successfully used on a new care home in the historic city of Edinburgh.<br />

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

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

conjunction with main contractor McLaughlin and Harvey.<br />

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

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.<br />

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

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

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

www.proctorgroup.com/air-barriers<br />


Freefoam Building Products has showcased Dark Grey Fascia at a new Morris Homes<br />

site in Leicester.<br />

The Glebelands Park development features a collection<br />

of detached and semi-detached 3, 4 and 5 bedroom<br />

properties.<br />

Morris Homes selected Dark Grey fascia to perfectly complement the grey window frames,<br />

juliet balconies and garage doors to achieve a coordinated, contemporary look. Phil Shaw,<br />

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

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

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


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

development scheme adjacent to Liverpool Street Station.<br />

Prater has been appointed to the high profile project and has worked alongside main contractor Sir<br />

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

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

package utilising Radmat PermaQuick with a mixture of Radmat Protherm G and Quantum<br />

insulations. www.prater.co.uk<br />


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

highlighted in a new flagship project to deliver student accommodation in the centre of Portsmouth.<br />

The Wraptite external air<br />

barrier system was used<br />

at Portsmouth One.<br />

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

Crown Student Living with main contractor Osborne. Facades contractor Fabrite engaged Facade Materials Specialist InOpera<br />

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

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

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

60 TC JULY <strong>2018</strong>

SEE US AT<br />

Protective<br />

casing<br />

Wraptite ®<br />

Wraptite, a strong robust external air barrier designed to keep buildings airtight<br />

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

membrane and an airtight membrane in one affordable, self-adhering product.<br />

Ladybird - Their bright colouring is used as a defence mechanism and<br />

their antennae and eyes can be drawn back into the pronotum:<br />

a protective casing.<br />

Get in touch to find out more about Wraptite<br />

☎ 01250 872 261 ✉ contact@proctorgroup.com<br />

14/5153<br />

www.proctorgroup.com<br />


Tapered Projects<br />


By James Wilkinson (pic), Design Team Leader at Gradient.<br />

Tapered insulation is essential for adequate<br />

falls provision in new and existing flat roof<br />

installations. It helps prevent issues such<br />

as ponding which if left untreated, could<br />

undermine the roof’s long-term performance and<br />

cause damage to the building it was designed to<br />

protect. A quality flat roof installation depends on<br />

correct specification and expert application of<br />

materials including the insulation. The following<br />

guide will hopefully ensure your flat roofing<br />

project’s smooth success.<br />

Good positioning<br />

As insulation designers and manufacturers, we<br />

need to know the extent of tapered insulation<br />

required and proposed drainage positions in order to<br />

design the most effective tapered scheme. Without<br />

this, you could be opening yourself up to a<br />

magnitude of revisions which in turn causes delays.<br />

Know the value<br />

In order to achieve the thermal requirements, we<br />

need to be aware of the U-value the roof has to<br />

achieve. Often, projects are submitted without<br />

this vital detail. For reference, 2013 Part L<br />

Building Regulations for England state a newbuild<br />

domestic flat roof should achieve a U-value<br />

of 0.11; flat roof extensions and refurbishments<br />

should achieve 0.18. For non-domestic new<br />

buildings, flat roofs should achieve a U-value of<br />

0.14. For non-domestic flat roof extensions and<br />

refurbishments a U-value of 0.18 is required.<br />

Match fit<br />

A J42 specification should contain the roof’s<br />

waterproofing details. This will dictate which<br />

materials will form the tapered insulation<br />

scheme. As part of its extensive insulation range,<br />

Gradient manufactures panels compatible with<br />

various waterproofing systems including torchon,<br />

adhered single ply and mechanically-fixed<br />

applications. It’s a case of ‘horses for courses’<br />

and ensuring the right<br />

waterproofing system is<br />

specified with the correct<br />

insulation.<br />

No compromise<br />

Low roof details such as<br />

balconies, terraces, windows and<br />

doors can affect the falls proposed and the<br />

thermal performance that can be achieved. These<br />

features will require waterproofing, therefore it’s<br />

important to know if the roof contains any height<br />

restrictions. Even low levels of parapet height can<br />

be overcome using Gradient’s ultra-thin VIPs<br />

(vacuum insulated panels). Compromising the<br />

amount of height required for detailing the<br />

waterproofing to avoid exceeding any height<br />

restriction isn’t advisable as this will negate the<br />

watertightness.<br />

Access pointers<br />

Doing your homework on the roof installation site<br />

will also pay dividends. It could help with the<br />

project‘s cost effectiveness, if, for example,<br />

there’s access for an articulated lorry to bring<br />

materials to site. One large vehicle is more<br />

practical, cheaper and time efficient than<br />

arranging three smaller ones to carry out the<br />

same job.<br />

What’s in store?<br />

As well as being mindful of a site’s vehicular<br />

access, it’s important to know how much storage<br />

space it possesses. For example, a building with<br />

a 10,000m² roof probably won’t have room on<br />

site to store the equivalent amount of material.<br />

Materials stored without protection on site are<br />

likely to be damaged if left at the mercy of the<br />

elements. Therefore, if storage space is limited<br />

the roof’s installation can be planned in stages to<br />

eliminate stockpiling issues.<br />

See a specialist<br />

Engaging with a proven flat roof<br />

insulation specialist is<br />

essential to a successful<br />

build. At Gradient, our<br />

surveyors are not only available<br />

throughout a project to offer all<br />

manner of help including site visits,<br />

their expertise is on offer pre and postinstallation.<br />

For instance, if a client is unsure of<br />

what their roofing requirements are, our team can<br />

provide options relating to cost, U-value<br />

calculations and also arrange for a condensation<br />

risk assessment to be carried out. We believe this<br />

service offers clients total peace of mind that,<br />

however challenging the project, they have<br />

Gradient’s technical team’s experience and<br />

know-how at their disposal at all times.<br />

Special bond<br />

Roofing insulation specialists who manufacture<br />

factory-bonded, single-layer panel systems can<br />

also aid a project’s success. Our single-layer<br />

boarding can be bonded to a thickness of<br />

530mm. This solitary system not only saves onsite<br />

installation times, the tighter bond<br />

guarantees the insulation’s quality as it doesn’t<br />

comprise a number of multi-width boards.<br />

As with any building project, good planning is key.<br />

However, no architect, contractor or roof installer<br />

is immune to oversight, regardless of experience.<br />

Hopefully the above guidance will serve as a<br />

useful reference point for those embarking on<br />

their next roofing project. For a headline<br />

installation, it’s always good to check the small<br />

print first.<br />

Contact Gradient<br />

01543 678777<br />

www.gradientuk.com<br />

@Gradient_UK<br />

62 TC JULY <strong>2018</strong>



The Weightanka® mobile man anchor provides<br />

the complete solution for short term safety and<br />

low frequency operations and is designed for<br />

use on roofs with up to a 5° pitch.<br />

The system conforms to EN 795 Class, is quick<br />

and easy to assemble and weighs just 250kg.<br />

By using smaller components and with no single<br />

item weighing more than 25kg, Weightanka®<br />

is easy to lift and carry to and from the point<br />

of use. Suitable for use on all roof surfaces,<br />

Weightanka® provides fall protection for a single<br />

worker and fall restraint for two people when<br />

working at least 500mm away from a fall hazard.<br />

Features and Benefits:<br />

• Short term safety for low frequency work<br />

• Does not penetrate the roof membrane<br />

• Suitable for use on various roof types<br />

• Can be used on roofs up to 5° pitch<br />

• Compact design for ease of transportation<br />

• Quick and easy to assemble<br />

• Complies with current regulations,<br />

including BS EN 795.<br />

www.safesite.co.uk<br />

Tel: 01293 529977<br />

Email: info@safesite.co.uk

External Wall Insulation<br />


By Ben Warren, Managing Director at Baumit.<br />

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

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

ten reasons why EWI is a thermal and financial necessity, offering safety, comfort and efficiency<br />

for your project...<br />

“Effective and efficient<br />

EWI installations<br />

ensure safety is not<br />

compromised”<br />

1. The commercial argument<br />

EWI can provide cost-effective solutions for<br />

people who need to save on space. For instance,<br />

if a room is 5m2, a decent level of internal wall<br />

insulation would require a minimum build-up of<br />

15cm. This would cause a 6% reduction in floor<br />

area, which might not seem a huge amount, but<br />

could equate to a significant loss in residential<br />

buildings containing several properties. Loss of<br />

floor space equals loss of income for the landlord,<br />

therefore in these cases there’s a commercial<br />

argument for choosing external wall insulation.<br />

2. Prevent condensation<br />

EWI removes the dew-point – the temperature<br />

below which water droplets condense from the<br />

inside of a building to prevent condensation<br />

forming. Baumit openSystem provides an<br />

example of an EWI system that liberates moisture<br />

and retains airtightness. Its perforated Expanded<br />

Polystyrene (EPS) façade insulation boards<br />

ensure high vapour permeability, resulting in the<br />

release rather than the entrapment of water<br />

vapour.<br />

3. Colour flexibility<br />

EWI installations have to be aesthetically pleasing<br />

as well as practical. In light of recent colour<br />

technology, we have developed an entire<br />

spectrum of colour palettes to meet design needs.<br />

Plus, all colours are completely resilient to all<br />

weather conditions, meaning your exterior will be<br />

striking and efficient in equal measure.<br />

4. Weather protection<br />

EWI installations offer considerable protection for<br />

the building, with topcoats designed to make<br />

external walls completely resilient to both hot and<br />

inclement weather conditions. Our EWI systems,<br />

including ‘Cool pigments’ render topcoats and<br />

façade paints, act as a building’s shield. Both<br />

dark and light paints contain specific colour<br />

technologies which can cool a building in the<br />

summer, protecting it from exhaustive heat<br />

exposure.<br />

5. Longevity<br />

EWI installations are a huge investment, therefore<br />

it is important to find a solution that will<br />

guarantee longevity. I like to say EWI is like<br />

cruising in a beautiful car on a high-road without<br />

any interruption. Whilst boilers can break and<br />

leave you without heating, EWI is in it for the<br />

long-haul.<br />

6. Wellbeing for inhabitants<br />

Buildings are to be lived in and occupied by<br />

people, so comfort is a natural priority. Effective<br />

and efficient EWI installations ensure safety is<br />

not compromised. EWI installations usually<br />

constitute several components including; an<br />

insulation layer made up of mineral wool, primer<br />

to waterproof the system, a glass fibre to anchor<br />

the primer and finally a render finish. When<br />

combined, I believe all of these components<br />

provide the perfect solution to keep inhabitants<br />

happy and healthy.<br />

7. Optimum heat retention<br />

To prevent the loss of heat, EWI works in two<br />

ways. Firstly, it is designed to conduct heat so<br />

that it is locked into a building. Secondly, the<br />

majority of EWI systems contain slabs which use<br />

thousands of tiny air pockets to entrap the heat.<br />

Should any excess moisture arise, Baumit’s<br />

openSystem is designed to release moisture,<br />

preventing the development of any dreaded<br />

damp.<br />

8. Quick installation<br />

EWI is a perfect solution for older buildings<br />

without cavity walls, as the insulation can simply<br />

be injected in the free space. Many modern<br />

properties are built with cavity walls. However,<br />

more specialist treatment is often required for<br />

certain exteriors. Although installation times are<br />

relative to a building’s size, EWI systems can be<br />

applied speedily within five-to-seven days,<br />

minimising the disruption to inhabitants.<br />

9. Energy saving<br />

EWI installations can save energy costs due to<br />

supreme ability to optimise heat retention. EWI<br />

technology is designed to offer thermal energyefficiency,<br />

locking in heat as opposed to releasing<br />

it. Investing in a tighter, high-performing EWI<br />

system will reduce an occupier’s heating costs –<br />

a real win-win situation.<br />

10. Versatility<br />

Taking all of these points into consideration, I<br />

believe EWI is a versatile, efficient and costeffective<br />

system for any building, no matter the<br />

scope. Offering both practical and design<br />

versatility, EWI improves the aesthetics on the<br />

outside and the building’s thermal performance,<br />

ensuring a building delivers both in terms of the<br />

external appearance and the internal safety for its<br />

occupants.<br />

Contact Baumit<br />

01622 710763<br />

www.baumit.co.uk<br />

@BaumitUKLtd<br />

64 TC JULY <strong>2018</strong>

We’re opening new doors<br />

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

thinking attitude and solid business strategy we are well on track for continued growth within<br />

the rapid moving industry that is roofing and construction.<br />

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

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

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

portfolio, expansion and continued growth is extremely positive in an ever competitive industry.<br />

Easy-Trim...the future of British Manufacturing<br />

t 0845 034 6008 f 0845 034 6010<br />

12B Metcalf Drive, Altham Industrial Estate, Altham, Lancashire, BB5 5TU, Great Britain

Insulation Updates<br />


Ecological Building Systems has developed a new CPD presentation aimed at highlighting the<br />

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

performance of CLT schemes.<br />

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

headquarters in Grantham, The Steiner School in Frome and the headquarters of furniture company Vitsoe<br />

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

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

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

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

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.<br />

“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<br />

appropriate and effective range of insulation and air tightness solutions.” www.ecologicalbuildingsystems.com<br />


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

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

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

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<br />

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<br />

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<br />

money by preparing a workspace beforehand.”<br />


RAVATHERM UK has strengthened its sales team with the appointment of a new Business<br />

Development Manager for the West.<br />

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

construction industry to the POLYFOAM XPS insulation manufacturer. Speaking about his<br />

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

RAVATHERM UK and POLYFOAM XPS in a region where we see significant opportunities to grow<br />

the business.” www.ravatherm.co.uk<br />


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

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

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<br />

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

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<br />

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

to ensure thermal insulation materials are safe and fit-for-purpose.<br />

66 TC JULY <strong>2018</strong>

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The Apex<br />


Everyone from planners and regulators, to architects, contractors, roofers and builders<br />

knows the importance of implementing a robust quality assurance system. Here, to mark<br />

World Accreditation Day, Jackie Biswell, Managing Director of Apex Roofing, looks at how a<br />

roofing accreditation could deliver confidence of best practice in the sector.<br />

Sir Frances Bacon is famously credited for<br />

the proverb ‘knowledge is power’ – a<br />

statement that highlights the importance<br />

of learning and developing new skills to stay<br />

ahead of the competition.<br />

It can also be applied to the importance of<br />

working with experienced individuals – those who<br />

have been rigorously assessed on their<br />

capabilities, commitment and knowledge.<br />

This is why it is so important for the roofing<br />

industry to have an accreditation; a formal<br />

recognition by an authoritative body of the<br />

competence to work to specified standards.<br />

“Nearly every aspect of<br />

the construction<br />

process can be<br />

accredited and all of<br />

the key stakeholders<br />

can benefit”<br />

Why it works<br />

Nearly every aspect of the construction process<br />

can be accredited and all of the key stakeholders<br />

can benefit.<br />

Accreditation gives companies confidence that<br />

products and raw materials are safe and meet<br />

specifications.<br />

For manufacturers, accreditation helps limit<br />

product failure.<br />

The owners and operators of buildings can help to<br />

discharge their legal duties by using accredited<br />

companies to monitor the safety of the built<br />

environment.<br />

Consumers benefit too, as accreditation helps<br />

boost confidence in the safety of buildings and<br />

infrastructure.<br />

In short, having some kind of certification ensures<br />

safer, cleaner and smarter construction by<br />

helping to control risk, demonstrate compliance<br />

and provide quality assurance.<br />

It also helps drive efficiency and the adoption of<br />

best practices, reducing costs and easing the<br />

financial pressures for everyone concerned.<br />

What’s on the horizon<br />

We are not the only company who is championing<br />

this concept for our industry.<br />

In fact, on a much wider platform, the National<br />

Federation of Roofing Contractors (NFRC) and<br />

the Construction Industry Training Board (CITB)<br />

have collaborated to put together such an<br />

accreditation for our sector which aims to<br />

improve efficiency, upskill the workforce,<br />

encourage the use of new technology and attract<br />

new talent.<br />

The latter is particularly relevant in today’s<br />

climate where a lost generation of construction<br />

specialists is causing a vast skills gap in all<br />

areas of the building sector.<br />

After all, when the recession hit, construction<br />

contracted by 16.5% in just three years and more<br />

than 350,000 tradesmen and women lost their<br />

jobs.<br />

In response, the industry cut back on training and<br />

stopped offering apprenticeships.<br />

Jackie Biswell, Apex Roofing<br />

And then things started to improve.<br />

The sector began to recover, the Government<br />

introduced plans for new housing, the Help to Buy<br />

scheme was launched and mortgages were easier<br />

to come by.<br />

Suddenly there was plenty of work – but nobody<br />

to do it.<br />

Getting young people into the sector<br />

The shortage of new blood entering the industry is<br />

coupled with its poor perception. “Builder” and<br />

“roofer” are the only professions to routinely have<br />

the word “cowboy” attached to them – an<br />

affront to the thousands of capable, committed,<br />

talented people delivering complex building<br />

projects in the UK and around the World.<br />

But painful as it may be to have to defend the<br />

stereotypes, we must address them if we are to<br />

make UK construction sector a fit career<br />

destination for today’s talent.<br />

We need to be doing more to encourage women<br />

into the industry. More to showcase the vast<br />

range of career options available; more to<br />

modernize; and more to build skills for the future.<br />

And to do this – particularly in the roofing sector<br />

68 TC JULY <strong>2018</strong>

“We believe professional<br />

accreditation will not only improve<br />

career prospects but also increases<br />

technical credibility for the<br />

employer, which ultimately brings<br />

benefits to the customer”<br />

– contractors have to have the support they need to operate efficiently and<br />

confidently as recognised professionals.<br />

This will be managed through the accreditation process.<br />

As Mark Noonan, Industry Relations Director of the CITB points out, working<br />

in partnership will “ensure that employers and clients benefit from an<br />

accredited workforce” and that “the scheme benefits would be supported<br />

across all specialist federations, professional training providers and other<br />

relevant stakeholders.”<br />

This is backed up by Jon Vanstone, Chair of the Competent Person Forum and<br />

Trade Association Forum who will direct the programme of delivery for the<br />

accreditation.<br />

He said: “With engagement across the board it could change the perception<br />

of a career in roofing and encourage more people into the sector.<br />

“It could also mean that we are not just actively recruiting but we are<br />

recruiting individuals who know what they are doing.”<br />

Taking the first steps<br />

Apex Roofing hopes to be one of the first companies to follow the<br />

accreditation scheme which sets out to create 5,000 accredited roofers in a<br />

four-year period.<br />

We believe professional accreditation will not only improve career prospects<br />

but also increases technical credibility for the employer, which ultimately<br />

brings benefits to the customer.<br />

All our roofing clients can be confident that the work delivered is of the<br />

highest quality and that work is completed ethically and sustainably.<br />

We believe with this in place, knowledge is most certainly power.<br />

F or everyone settling for nothing but the<br />

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However, this knowledge needs to be continually developed, built on and shared.<br />

And accreditation will place this at the forefront – helping us future-proof our<br />

industry with a new generation of roofers.<br />

Contact Apex Roofing<br />

01502 537129<br />

www.apexroofinguk.com<br />

@ApexAnglia<br />

JULY <strong>2018</strong> TC 69

Company Van Tax<br />



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

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

the different scenarios to look out for regarding company van tax.<br />

So, you have a ‘company’ van. You clearly<br />

use it for work and business purposes<br />

and it’s also on your drive at home. But<br />

there’s a question that’s going to bother HMRC<br />

more than it’s going bother you until it’s too<br />

late – should you pay tax on the company van?<br />

The answer is more than likely… yes.<br />

What is a van?<br />

For HMRC’s purposes, a van is defined as “a<br />

vehicle of a construction primarily suited for the<br />

conveyance of goods or burden of any description<br />

(not including people)” with a design weight<br />

(when in normal use and travelling on a road<br />

loaded) not exceeding 3,500 kilograms. A double<br />

cab pickup may be classified as a car or a van<br />

depending on its VAT classification while<br />

(mini)buses etc. are not vans because they are<br />

primarily designed to carry people.<br />

The law is blunt<br />

As the law is written, you are liable to pay tax on<br />

all “significant” private usage of a van – in other<br />

words, for journeys that you make for your own<br />

private benefit including regular shopping trips,<br />

for holidays, the distance to get to and from the<br />

likes of IKEA, or just general social activity.<br />

While physically there’s nothing stopping you<br />

making the trips – assuming the van is taxed,<br />

MOT’d and insured – unless tax is declared and<br />

paid, HMRC is going to take a very dim view of<br />

the matter should it find out.<br />

By definition, you do not have to pay tax on any<br />

journeys which are considered to be “insignificant<br />

private use” – that is, the odd or very rare trip<br />

which is not regular (such as journeys that are<br />

brief and very occasional).<br />

These might be a trip to the tip a couple of times<br />

a year; making daily, but short, detours to get a<br />

paper and lunch on the way to work; or stopping<br />

off at the doctor on the way home.<br />

Infrequent as they are, HMRC does conduct<br />

regular audits on firms nationwide to check on<br />

private usage of vehicles. And so, if this happens,<br />

70 TC JULY <strong>2018</strong>

how will you prove a trip in the company van was<br />

insignificant? Sadly, it’s going to boil down to<br />

what appears in the taxman’s manual and what<br />

your company can prove – your personal<br />

situation or perspective is unlikely to be taken<br />

into account.<br />

As for how HMRC undertakes its compliance<br />

checks, they’re mostly down to common sense.<br />

Tax inspectors have been known to check vehicle<br />

registration numbers they find in supermarket car<br />

parks – especially at night, on weekends and<br />

bank holidays. From there it’s just a question of a<br />

simple search of the DVLA computer to see who<br />

owns and is the registered keeper of the van. The<br />

next stage in the discovery process means<br />

checking the HMRC computer to confirm the<br />

owner or keeper is a company and whether or not<br />

any company van benefits have been declared on<br />

employees’ P11Ds. If not, HMRC will then<br />

conduct an Employer Compliance Audit – and<br />

that’s where the problems start.<br />

Taking steps to protect your position<br />

Not unsurprisingly, HMRC’s taxmen will want you<br />

to prove that your company van is not being used<br />

for significant private use. They’ll also want to<br />

see that the company has put in place measures<br />

to prevent significant private use unless that<br />

private use has been declared (and tax paid).<br />

This might mean checking company policies,<br />

seeing if employees are made to sign off on<br />

policies while noting down business mileage and<br />

so on.<br />

Indeed, it’s for these reasons that you may have<br />

been told – despite that it looks like you’re being<br />

spied upon – to note down every journey made in<br />

the van, because by doing this both you and the<br />

company will avoid any tax tied to the use of<br />

company vans or company fuel. Similarly, it’s<br />

also the reason why you may be told to pay for<br />

private use of fuel.<br />

While ordinary commuting from home to a job is<br />

allowable, it’s still important to be accurate with<br />

record keeping. We’re all busy but estimating<br />

journey distances can get you and the company<br />

into trouble with fines.<br />

As to what to put into a mileage log, it needs to<br />

record the van, driver, date, start and end of the<br />

journey, stops made, start and end of daily<br />

mileage – and importantly – the number of<br />

business miles covered.<br />

Van policy<br />

The company van policy is very important. It’s an<br />

employer’s ‘get out of jail free’ card. It should be<br />

a clear and well written document that outlines<br />

permitted uses of the van and specifically what<br />

private use is allowed. The company needs to<br />

keep the document updated and you should have<br />

been given it to read before taking a van out. You<br />

may have been asked to sign a document noting<br />

that you’ve read the policy. Don’t ignore it – if the<br />

company can show that it’s done what is required<br />

of it it’ll be you that’ll be left holding the tax baby.<br />

Tax to be paid<br />

To the nitty gritty of the tax regime. If there is<br />

private use you – no matter if you’re an employee<br />

or director of the company – will have to pay<br />

income tax on the company van. There is an<br />

additional tax charge where fuel is provided for<br />

private use. On top of that, the company providing<br />

the benefit pays Class 1A national insurance<br />

contributions at 13.8% on the value of the benefit<br />

and must tell HMRC of the benefit via a form<br />

P11D.<br />

As to how much you’ll pay, the tax charge is your<br />

rate of tax multiplied by the benefit that HMRC<br />

sets for the year in question.<br />

For the tax year 2017/18 the van benefit was<br />

£3,230 while the van fuel benefit was £610. This<br />

means anyone on a 20% tax rate would have<br />

paid £646 tax for private use of the van and an<br />

additional £122 for private use of company fuel.<br />

The rates for the current tax year – <strong>2018</strong>/19 –<br />

are £3,350 for the van benefit and £633 for the<br />

private use of company fuel. Again, a 20% rate<br />

tax payer will pay £670 for using the van and<br />

£126.60 for using company fuel.<br />

“HMRC does conduct<br />

regular audits on firms<br />

nationwide to check on<br />

private usage of<br />

vehicles – how will you<br />

prove a trip in the<br />

company van was<br />

insignificant?”<br />

The company, as we’ve seen earlier, will have to<br />

pay Class 1A national insurance contributions at<br />

13.8% on the £3,983 value of the benefits –<br />

you’ll recall the £3,350 for the van and £633 for<br />

the fuel – a total of £549.65. However, it can set<br />

this charge against its tax bill.<br />

Zero emission vans<br />

For the eco-friendly company, there are tax<br />

savings for using zero emission vans. However,<br />

the government is losing too much revenue on<br />

this and so is gently phasing the discounted vans<br />

benefit charge out between now and the 2022/23<br />

tax year.<br />

The tax charge to be paid was 20% of the normal<br />

rate of tax on the van between the 2015/16 and<br />

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

charge for <strong>2018</strong>/19 but will rise to 60% in<br />

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

will be the full 100% of the standard tax charge<br />

from 2022/23.<br />

VAT and vans (and other<br />

commercial vehicles)<br />

Lastly, VAT is an unpleasant extra for most. But<br />

luckily, VAT on the purchase price may be<br />

reclaimed by a VAT registered business. However,<br />

when the van is later sold VAT must be charged<br />

on its sale. There is also VAT due on private use<br />

of company fuel. But that is a whole other story.<br />

Company Van Tax Calculator:<br />

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

Government website (search for “vans”): gov.uk<br />

JULY <strong>2018</strong> TC 71

Bracknell’s View<br />


In the latest instalment of his contractor column, Simon Smith, of Bracknell Roofing, looks<br />

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

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

The cost of incorrectly allocated defect<br />

notifications on our business each year has<br />

a double whammy effect financially and in<br />

wasted time. The general perception seems to be<br />

if there’s a leak from above or a problem is<br />

reported at roof level, then it must be down to the<br />

roofer. This recurring theme continues regardless<br />

of how many times roofing contractors<br />

demonstrate otherwise. So why is this?<br />

Misinformation<br />

In my opinion, the internet and social media have<br />

a lot to answer for. These days the consumer is<br />

surrounded by online opportunities to ‘research’ a<br />

topic and there’s no shortage of would-be experts<br />

out there peddling their often inaccurate,<br />

subjective, self-opinionated ‘wares’ for the world<br />

to access. Misinformation like this can adversely<br />

affect the consumer’s approach to a complaint<br />

and their expected outcomes from it.<br />

Non-issues blown out of proportion<br />

Social media is like a digital grapevine. We’ve<br />

come across cases where a consumer is unhappy<br />

with their builder and subsequently broadcasts<br />

negative messages on social media to other<br />

residents, who then start to question things about<br />

their own property, causing a snowball effect.<br />

Consequently builders and sub-contractors like us<br />

end up dealing with non-issues blown out of all<br />

proportion, sometimes at financial or relationship<br />

cost, or on occasion both.<br />

Typical recall ‘issues’<br />

The knock-on effect for sub-contractors like us<br />

working for quality builders is disproportionate<br />

and consumer complaints are often not fully<br />

validated before allocation to us. So, what typical<br />

recall issues do we encounter?<br />

We are sometimes called out to issues which<br />

should have been allocated to other contractors<br />

such as joiners, plumbers and follow-on trades<br />

like solar PV fitters and aerial installers. Whilst far<br />

from an exhaustive list, issues include: broken<br />

roof tiles or slates; dislodged dry-verge starters;<br />

damage by other trades dealing with their own<br />

defect recalls, bathroom extractors not connected<br />

to vents and badly maintained roof drainage<br />

systems. But there are other factors such as out<br />

of sequence working and products.<br />

Less haste<br />

Builders are sometimes keen to get the roof on as<br />

quickly as possible – to get it dry so that other<br />

trades can start on the internal works – but, in<br />

some cases, it can mean that vital preceding<br />

works like roofline, brick work and joinery work<br />

are not always ready, and the resultant effect can<br />

compromise roof installation. Some modern<br />

construction methods such as timber frame and<br />

SIP panel systems can also have a similar effect.<br />

Delivery problems<br />

Manufacturers and suppliers failing to deliver key<br />

components like ridge block-ends and vent tiles<br />

with the roof tiles causes re-visits and increased<br />

margin for error, sometimes resulting in products<br />

not being entirely fitted to the letter of the<br />

manufacturer’s instructions. Issues like excessive<br />

breakage of roof tiles during installation has a<br />

similar effect. Also, some system components<br />

such as dry verge starters could be better in<br />

terms of design and robustness.<br />

Whys and wherefores overlooked<br />

Moving the clock forward a few years, if a<br />

consumer encounters a related issue with their<br />

roof, often the whys and wherefores get<br />

overlooked and the focus zones in on who is<br />

responsible for repairing or footing the bill, so it is<br />

imperative we get it right today both in terms of<br />

the work we do and when we do it.<br />

A contentious point<br />

A bone of contention on recalls is where building<br />

maintenance companies are used to investigate<br />

alleged defects. This is a contentious point but in<br />

my opinion there can be a basic conflict of<br />

interest here because it’s in their commercial<br />

interest to find faults – as both a revenue<br />

generator and to make themselves look good in<br />

the eyes of their clients. This is compounded by<br />

the fact that, in my opinion, they are not always<br />

necessarily qualified to accurately fault-find on<br />

roofs. These types of situations can cause a strain<br />

in client relationships<br />

That said, where the NHBC is concerned, the<br />

interaction with them on site during original<br />

installation is increasingly proactive and<br />

ultimately helpful to all parties.<br />

Health and safety<br />

A footnote to the fact that we get called out to fix<br />

problems is the perception that we can always<br />

make quick running repairs, often by popping up a<br />

ladder. This is absolutely not the case. We have<br />

very robust health and safety practices in place to<br />

ensure the safety of all of our roofers and the<br />

public at all times. Quick-fix, short-duration works<br />

present additional risks that we should be<br />

avoiding, rather than encouraging.<br />

Contact Bracknell Roofing<br />

08705 626800<br />

www.bracknellroofing.com<br />

@BracknellUK<br />

72 TC JULY <strong>2018</strong>

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