... Refineries, Cement Plants and Incineration Plants. Fabric expansion joints offer a greater ability to handle axial, lateral, ... plies can vary depending on requirements, although most joints are ¼" thick with two ply fiberglass reinforcement. ... composite expansion joints materials are various layers of TFE (Teflon), fiberglass fabric, TFE impregnated fiberglass fabric, fiberglass insulation, Butyl ...