Firestone SBS Premium FR Torch is a modified bitumen membrane featuring a blend of SBS (Styrene-Butadiene Styrene) rubber polymer and high quality asphalt reinforced with a heavy, strong non-woven polyester mat enhanced with continuous fiberglass yarns. SBS Premium FR Torch is designed specifically as the top layer for use with Firestone SBS Modified Bitumen Systems and has the bottom surface covered with a poly burnoff film to aid in heat welding applications. The addition of SBS rubber polymer and fire-retardant materials optimizes the asphalt blend to increase its natural waterproofing properties, adding elongation, elasticity, flexibility and fire resistance to the sheet. The fiberglass reinforced polyester mat provides strength and stability to the product, yielding a membrane that resists natural forces and other factors on the rooftop. These are ideal for use on both new construction and reroofing projects. Firestone SBS Premium FR Torch with UltraWhite granules has a highly reflective surface designed to meet national, state, and local energy code requirements.