Built-Up Roofing (BUR)

a roofing system with layers of different materials to achieve durability and waterproofness. BUR is a continuous and semi-flexible membrane that consists of felt or fabric layers (called plies) alternated with layers of other materials like tar/bitumen and aggregate. Often seen on older commercial buildings with low-slope roofs, BUR has been in use for 120 years. This type of roofing is no longer used in this area.

Comment on this FAQ