Single-layer waterproofing system for Passive solar cool roofs.
Derbibrite is a multi-layer waterproofing system for warm, flat roofs on new build or refurbishment projects.
The membrane is a 3 mm thick, acrylic copolymer blend with glass-fibre and polyester reinforcement. It has a non-textured, integral acrylic surface.
The standard specification, applicable to timber, metal or concrete decks, is for the Derbibrite membrane to be cold bonded to the insulation, which is laid on an Alumasc Nilperm vapour barrier bonded to the deck in hot bitumen.
J41/110 Built-up reinforced bitumen membrane warm deck roof covering
Derbibrite waterproofing system
|Vapour control layer|
Nilperm vapour barrier
Derbifoam polyurethane GTF
Derbirock mineral wool
- Derbifoam polyurethane:
- Derbirock mineral wool:
Derbibrite: A modified bitumen membrane with a brilliant white, highly reflective finish. UV resistant, 3 mm thick.