Derbigum systems comprise a range of reinforced APP/TPO polymer modified bituminous membranes with composite or dual reinforcement. Derbigum has a proven track record dating back to 1967 and is backed by the highest levels of certification and testing. Designed for use as a torch-applied cap sheet within traditional built-up roofing systems, as well as in buried applications and green and blue roof systems.
The range includes warm and non-combustible thermal insulation options, underlays, air and vapour control layers (AVCL), and ancillary components.
Derbigum membranes are engineered to deliver long-term, durable waterproofing across a wide range of roofing applications. Manufactured using APP/TPO polymer modified bitumen and composite or dual reinforcement, the range is supported by BBA certification confirming a service life in excess of 50 years. Derbigum Mineral is a mineral-surfaced membrane that is UV resistant and does not require any additional surface coating, while Derbigum Black is a self-finished membrane suited to built-up systems, buried applications and heavy-duty environments. For green roofs, anti-root variants ensure effective protection against root ingress. The comprehensive range provides dependable solutions for both new build and refurbishment projects.
Alumasc provides a comprehensive range of single-source warranties for the Derbigum range, offering coverage for up to 40 years. Installed exclusively by Registered Contractors and underpinned by our extensive project support service, these warranties cover product, workmanship, and design.
For projects that require the highest level of protection, the Derbigum Titanium warranty is available as an enhanced level of cover. This premium warranty provides a 30 year full system warranty together with a 20 year insurance backed guarantee from an independent insurer.
This additional level of protection ensures continuity of cover for the full term of the warranty, even if the installer or manufacturer ceases trading. Alumasc Roofing is the only UK manufacturer to offer this level of warranty protection in the market.
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