Further technical information such as composition and manufacture, size and weight, performance and sitework...

Further technical information such as composition and manufacture, size and weight, performance and sitework...

Derbigum Mineral and Derbigum Black are 4mm thick composites based on TPO modified bitumen. These are composed of a glass-fibre reinforced weathering surface and high tensile polyester core providing, in conjunction with Derbigum base layers, a unique combination of high performance protection and convenience of installation.

Derbigum Rapido system applies the proven durability of Derbigum with the speed and ease of installation of a single-ply system.
The use of Derbigum in a Rapido single-layer system provides options for a completely flame-free application, high-speed spray installation (in excess of 1,000m2 per day) and mechanical fixing in a BBA approved and fully warranted system.

Derbibrite is the revolutionary cool roof waterproofing membrane with the same proven track record of the Derbigum range. The highly reflective, acrylic top coat not only helps reduce the urban heat island effect of buildings to which it is applied, it lowers internal building temperatures and is formulated to allow direct bonding of photovoltaic panels.


Derbigum incorporates enhanced performance properties, such as increased flexibility, stronger reinforcement and ease of application.

Derbigum has an improved fire rating, passing UK and European fire tests. It can be installed without the use of hot bitumen, flame or a hot-air gun, therefore offering increased site safety.

Derbigum has been awarded a life expectancy in excess of 30 years by the British Board of Agrément, Certificate no. 86/1593.

Alumasc Technical Services provides a complete specification service for re-roofing, including roof surveys, thermal analysis, tapered-insulation layouts, wind-uplift calculations and detailed drawings to ensure long-term, cost-effective solutions. Derbigum systems carry a comprehensive warranty for 12, 15 or 20 years, depending upon exact specification.


Installation is carried out by a Derbigum approved contractor.


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Alumasc Roofing Systems

Alumasc Roofing Systems

Alumasc Roofing Systems’ unrivalled range of BBA certified flat roofing solutions are backed by on-site and office-based technical support, application by fully trained Alumasc registered contractors along with extended warranties and a post-project...
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T(01744) 648400
 +44 (0)1744 648400 Tech Dept.
F(01744) 648401
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 White House Works, Bold Road, Sutton, St Helens, Merseyside, WA9 4JG

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