A Derbigum, a bitumen/ malthoid 4mm thick covering which is applied to bitumen coated surface for water proofing.
What is it used for?
Torch On is perfect for the waterproofing of roofs on buildings as they move with the structure as they are not too rigid and do not absorb water. Waterproofing membranes systems are designed to protect both residential and commercial buildings through a mixed substance made up of organic liquids that are highly sticky and viscous.