DuraFlex ALUM SBS is a fire-resistant, embossed aluminum, premium SBS (Styrene-Butadiene-Styrene) mop or torch applied membrane. Manufactured with a fiberglass scrim mat that is saturated and coated with high quality, asphaltic bitumen and SBS elastomers for a durable, flexible and easily maintainable membrane. Designed for use as a cap sheet and flashing sheet in modified bitumen SBS roof systems.