SOPRAWALK™ is an SBS-modified bitumen ply used to create a walk path and protect the field membrane from traffic. SOPRAWALK is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with tough, dimensionally stable non-woven polyester mat. The topside surfaced with ceramic coated granules while the underside is surfaced with fine mineral aggregate to facilitate heat welding, cold adhesive and hot asphalt applications.