List of featured suppliers of ROOFING UNDERLAYS PITCHED ROOF MEMBRANES Undertiling Underslating AGREMENT CERTIFICATE HOLDERS on Building Products Index
The roofing underlay is a resilient layer that is placed under the tiles or shingles on a sloped roof to protect against moisture. Pitched roof membranes refer to a waterproof layer that is applied on the surface of a roof with a slope. Undertiling underslating is the process of installing a layer of material over the existing roofing to create a smooth surface before installing new shingles or tiles. Agrement certificate holders are individuals or organizations that hold certificates of conformity for construction products, indicating that they have been tested and approved by a recognized body.