COLPHENE® BSW V is a SBS-modified bitumen, self-adhered waterproofing membrane for use in approved blind side waterproofing assemblies. COLPHENE BSW V is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with a tough, dimensionally stable composite polyester/glass fiber reinforcement. COLPHENE BSW V is designed specifically for vertical pre applied/blind side waterproofing applications. The topside is surfaced with fine mineral aggregate and the underside is covered with a silicone release film that is removed during application.