Dtaylor6718 Jan, 2022Home & Garden
Three layers of sheet materials are rolled out over the roof and bonded together with hot bitumen. These sheet materials are based on a carrier normally polyester of varying strengths and coated in bitumen so that they fuse together to form a single waterproof layer. The membrane is laid onto insulation when applied over a heated building or part of a building with the insulation bonded to a vapour control layer which in turn is attached to the roof deck. This build up is known as the warm roof and is very successful.
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