RUBEROID^® UltraClad^™ SBS Membrane is manufactured using a high-tensile woven fiberglass scrim coated with an SBS modified bitumen asphalt which provides excellent cold temperature flexibility and elongation properties. The membrane is covered with an embossed aluminum foil-facing with small built-in control channels. It is designed for hot mopping asphalt or heat-weld flashing applications for both SBS and BUR assemblies at GAF.