Fire Test puts latest Derbigum Warm Roof Systems through their paces

Posted by Ashlea Williamson

With recent events in the UK highlighting the requirement for compliance with up to date and relevant fire test standards, Alumasc Roofing Systems have conducted further fire tests on the market leading Derbigum high performance bituminous membrane warm roof system.


Fire rating certificate

Derbigum Mineral and Derbigum Black full warm roof built up systems including primer, vapour barrier, adhesive, insulation, underlay and Derbigum cap sheets recently underwent rigorous testing to CEN/TS 1187:2012 – Test methods for external fire exposure to roofs (part 4) and ultimately achieved the highest grade, BROOF(t4) in fire safety available in the UK, which allows unrestricted use under the Building Regulations (see Approved Document B Section 14: Roof Coverings – clause 14.5 table 16).

ENV1187 Test 4 is a test method used to determine the performance of flat roofs to external fire exposure, the two-stage test method replicating exposure to burning brands, wind and supplementary radiant heat.

Exova Warringtonfire Gent conducted the tests in their brand-new facility in Belgium, confirming not only the applicability of original Derbigum fire rating tests but also confirming the compliance of the current warm roof build-up using the latest BBA Certificated Derbigum system, to reflect real in-use performance.

Alumasc understands the importance of this issue, having previously achieved top fire ratings to the previous standard (BS 476 pt3) on these products, and we, therefore, took the initiative to ascertain the fire rating of our latest systems in anticipation of tighter regulations governing the fire resistance of construction products.

Fire tested roofing membraneThis certification underlines Alumasc’s reputation for quality, performance and reliability, our aim being to provide our customers with unrivalled peace of mind when utilising our products and take all the steps necessary to facilitate this, including this certification which is designed to protect property and life from fire.

Specifying certificated products, systems and services in support of fire safety and security of any facility demonstrates due diligence and shows consideration for those that invest, develop, design, manage and use Alumasc’s Roofing Systems.


Legislation and the requirement for compliance to enter new markets has never been tougher and Alumasc will continue to develop and test their products to ensure we provide the highest levels of safety to not only our customers but the inhabitants and users of the buildings our products help to protect.

For further information regarding Warrington Certification click here

For further information about Alumasc’s waterproofing systems click here

free flat roofing product brochure and catalogue and samples

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Flat Roof Membranes,
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