ELASTOPHENE Stick FR GR (fire retardant, granules) is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with a tough, high quality random glass fiber mat. The topside is surfaced with ceramic coated granules and underside is surfaced with a protective polyolefin release film that is removed during application. ELASTOPHENE Stick FR GR is a SBS-modified bitumen cap ply for use in approved multi-ply membrane and flashing assemblies.