The top ply of a BUR or modified roof system that usually has a granulated surface.
A top layer in built-up roofing.
A finish roofing material, used as a covering for a built-up roof.
(1) A granule-surfaced coated sheet used as the top ply of some built up or modified bitumen roof membranes and/or flashing; (2) Mineral-surfaced coated felt used as the top ply of a built-up roof membrane.
a granule-surfaced coated sheet used as the top ply of a built-up roof membrane or flashing.
The top sheet of roofing in a built up roof, usually made of organic or inorganic fibers, saturated and coated on both sides with a bituminous compound and factory-coated with mineral granules, mica, talc, iliminite, asbestos, or other inorganic fibers, or similar material.
