Pictures Of Bur Roofing

Meets the requirements of astm d 3909.
Pictures of bur roofing. The colloquial term tar and gravel refers to built up roofs. Built up roofing or bur is the most popular choice of roofing used on commercial industrial and institutional buildings. A traditional bur system gets its name from the building of a roof on site using layers of base sheet interplay sheets and cap sheet or other surfacing such as gravel or liquid coating. Built up roof systems typically have a layer of insulation under the waterproof bitumen membrane as well as some sort of protective surfacing most commonly gravel.
Modified bitumen built up roofing. It is composed of alternating layers of reinforcing fabric and bitumen asphalt and is finished with a top layer of aggregate such as stone or gravel. For more than a century. Glaskap is used as a cap sheet in a variety of built up roofing systems.
Asphalt coated fiber glass reinforcement mat. Developed in europe in the mid 1960s modified bitumen roofing has been used in canada and the united states since about 1975. Built up roofing also called bur is the most common roofing material used on low slope roofs. Low moisture excellent dimensional stability and resistance to rot make it an ideal replacement for organic cap sheets.
Components of a bur system include the roof deck a vapor retarder insulation membrane and surfacing material. A built up roof is frequently called a bur in technical literature. Bur is used on flat or low sloped roofs and consists of multiple layers of bitumen and ply sheets. Provide protection to the underlying bitumen and membrane and have a low maintenance cost.
Bur is preferred for low slope or flat roofs because it creates a continuous sealed surface.