An outer covering of a comparatively flat roof, consisting of several layers of saturated felt. As laid, each layer is mopped with hot tar or asphalt. The top layer is finished with a mineral or rock covering and a special coating.
A roofing material applied in sealed, waterproof layers, where there is only a slight slope to the roof.
Roof composed of multiple layers of asphalt felt laminated with coal tar, pitch or asphalt with a top layer of crushed slag or gravel. Normally issued on flat roofs or those with very slight slope.
Flat or low pitched roof of three or more layers of tar-saturated felt or jute; the surface is finished with gravel or crushed slag.
A continuous, semi-flexible roof membrane consisting of layers of felts, fabrics or mats installed with binding layers of bitumen. A top layer of asphalt, emulsion or a granule-surfaced cap sheet is then generally applied.
Multiple layers of roofing membrane.
A low-slope (or flat-seeming) roof covered with alternating layers of roofing felt and hot-mapped asphalt and topped off with a layer of hot asphalt, known as flood coat. Counterflashing The flashing which is imbedded at its top in a wall or other vertical structure and is lapped down over shingle flashing.
A type of "flat" roof which is composed of several layers of roof felt and bituminous coating, often topped off with gravel.
A roofing composed of three to five layers of asphalt felt laminated with coal tar, pitch or asphalt. The top is finished with crushed slag or gravel. Generally used on flat or low-pitched roofs.
A flat or low-sloped roof consisting of multiple layers of asphalt and ply sheets.
Roofing composed of three to five layers of asphalt (normally installed on a level or near level roof.)
a continuous semi-flexible roof membrane assembly, consisting of plies of saturated felts sandwiched by layers of bitumen. Generally surfaced with mineral aggregate, bituminous materials or granule-surfaced roofing sheet
A type of commercial, or "flat" roof finish, produced by applying alternate layers of roofing felt and hot asphalt or pitch.
Roof formed by a number of layers of roofing mopped together with hot asphalt abbreviated as BUR.
is a roofing material applied in sealed, waterproof layers on a flat or low-pitched roofs.
A roof composed of layered felt or jute, saturated with tar, with each layer set by mopping of hot tar or asphalt.
A roofing material used when there is only a slight slope to the roof. Applied in sealed, waterproof layers.
A SYSTEM FOR RELATIVELY FLAT ROOFS THAT IS COMPRISED OF ALTERNATING LAYERS OF SOME SORT OF HEAVY FABRIC AND TAR IN ALTERNATING LAYERS, USUALLY CAPPED WITH GRAVEL OR A CONTINUOUS MEMBRANE.
A roof covering made of continuous rolls or sheets of saturated or coated felt, cemented together with bitumen, and may have a final coating of gravel or slag.
