SOPRALENE® Flam 250 FR GR (fire retardant, granulated) is an SBS-modified bitumen cap ply for use in approved multi-ply membrane and flashing assemblies. SOPRALENE Flam 250 FR GR is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with a tough, dimensionally stable non-woven polyester mat. The topside is surfaced with ceramic coated granules and underside is surfaced with polyolefin burn-off film to optimize heat welding.
Prior to installation, unroll SOPRALENE Flam 250 FR GR onto the roof surface and allow to relax. Position SOPRALENE Flam 250 FR GR in desired position and back roll the product. SOPRALENE Flam 250 FR GR is then heat welded to approved substrates. Refer to the SOPREMA® SBS Roofing Manual for additional application guidelines.