GROUNDWORKS; STRUCTURAL ELEMENTS
43
Sika demonstrates extensive fire safety compliance M
arket-leading roofing manufacturer Sika has now completed Extended Application Assessments, testing
to CEN/TS 1187:2012 Test method 4 for the entire Sika Sarnafil range of PVC single ply membranes. Subsequently, the most common Sika Sarnafil roof systems are now all classified under BSEN 13501-5 as BROOF
(t4). Working closely with independent global
fire safety testing, inspection and certification company Warringtonfire – part of the Element Materials Technology Group – Sika has undertaken significant investment to attain the BROOF
(t4) classification across all
PVC membrane systems. This covers a range of permutations, including membrane type, thickness of PIR insulation, up to a 70° pitch and on any structural substrate. A project spanning over two years’ work,
Sika has invested a substantial amount of time and resource, utilising the EXAP standard CEN/TS16459, which is available as a means of covering ranges of system permutations. Dean Grady, project leader and Senior Product Engineer at Sika, comments
on why Sika has opted to invest in this type of testing: “The market has become acutely aware of fire safety and it is looking to industry leaders to help. We have seen for a while now that specifiers, architects, clients and building control are increasingly insisting on fire test certificates that directly reflect the exact system being installed. As it is very problematic to test every single permutation of a system, when you factor in multiple substrate types, insulation thickness and membrane type/thicknesses, EXAP testing through an independent body allows us to cover most variations of the system being installed. With Sika Sarnafil roof systems classified as BROOF
(t4), we’re able to
Sika Sarnafil single ply on OCL Facades Ltd New Head Office, by Contour Roofing (Essex) Limited
demonstrate and facilitate regulatory compliance for fire safety and satisfy current market demand.” Continuing, he explains how the update
will affect specifiers: “Having this comprehensive BROOF
(t4) classification, which
indicates the highest external fire performance for roofs, means that specifiers and other stakeholders can use Sika Sarnafil on their roofing projects with a very high degree of confidence, assured that they’re complying with fire regulations.” The only people who are permitted to undertake any degree of desktop/ extrapolation studies now are accredited, independent fire test houses. This clearly removes the ability for anyone else to interpret or extrapolate the fire test data that may have been practiced in the past. “We are not offering a view, we are
offering wide-ranging test data and evidence that covers most permutations and situations – all with third-party verification, which is key.” he adds.
01707 394444
www.sika.co.uk/roofing
Magply partners with Prokol
A Dutch manufacturer of fireproof flat roof coatings is recommending IPP Limited’s Magply boards as the ideal substrate on which to install its liquid applied treatments: based not only on their fire rating and stability, but also because of the material’s flatness. A major installation is currently underway in Essex, on an industrial building known as ‘The Gloucester’s, where a long established local building company Davis Bros is overlaying the old ‘northlight’ roof over its own premises and that of its neighbours with a Prokol specification that includes 6 mm Magply. The roof structure is formed from concrete planks over steel trusses and has an existing felt waterproofing system nearing the end of its life. This is being overlaid with Soudal Foam and 100 mm of Xtratherm foil-faced insulation, onto which the 6 mm Magply boards are bonded using a polyurethane adhesive. The joints are sealed with Prokol’s special high elongation tape before the MonoSeal top layer is applied. Magply MOS boards present a fire-safe and environmentally friendly alternative to conventional plywood or OSB products.
01621 776252
www.magply.co.uk
ADF JANUARY 2022
WWW.ARCHITECTSDATAFILE.CO.UK
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