The composition of a UL-certified fire-rated, preformed, precompressed, foam expansion joint is illustrated here. The single-unit design features a front and rear bellowed silicone facing which acts as a watertight seal and is available in a range of colors. Behind this is an intumescent layer to provide initial fire-proofing. These dual-sided layers surround fire-retardant impregnated foam. The design of this single piece expansion joint in EMSEAL's EMSHIELD line of products provides all of the features that can be installed with a multiple product system.