• Self-adhering membrane consisting of an SBS rubberized asphalt compound which is integrally laminated to a blue engineered film • The membrane is specifically designed to be self-adhered to a prepared substrate • SBS modified membrane can be applied in temperatures as low as -10 F • Blue polypropylene film top surface and siliconized release film bottom surface • Excellent adhesion to prepared substrates of concrete, concrete block, primed steel, aluminum mill finish, anodized aluminum, galvanized metal, gypsum board, and plywood • Impermeable to air, moisture vapor, and water • Peel and stick application; no flame required • Factory controlled thickness • .9mm thickness • Self-sealing when punctured. • Size In x Ft=4 x 50