For expansion joints in exterior/interior walls where watertightness, fire-rating, sound attenuation and thermal-efficiency are required. It can be used alone or under any other expansion joint cover, plate or filler where depth of substrate allows. Because it is coated on both sides it can face in either direction from the wall and maintain its performance characteristics within that wall. Emshield WFR2 is installed with tensionless bellows, which when installed with an optional silicone bead on the weather face, maintain a watertight seal. The fire-retardant-impregnated foam, when properly installed, ensures a 2-hour fire protection in accordance with UL-2079. Minimizes sound transfer which often occurs at the expansion gap. There are no hard metal-to-substrate connections with Emshield WFR2. The system is locked to the joint faces by means of the 1) backpressure of the foam; 2) the epoxy adhesive, and 3) the injected sealant bands at the joint face. Movement Capability: Up to 100mm: ±50% (100% total) of nominal material size.