

This product is reinforced with a tough non-woven reinforced polyester mat, which has been strengthened with selected glass fiber strands. Specially formulated for excellent fire resistance, it is coated and impregnated with SBS modified bitumen to a thickness of 4.0 mm (158 mils). Ceramic, mineral granules are embedded in the surface to provide protection against ultraviolet radiation, and a light poly-film is bonded to the underside (which disappears upon heat-welding).