Use as a deadening material to reduce road noise, sound system vibrations, rattles, dash board plastic-to-plastic chafing sounds, and more Adheres to any metal, aluminum, fiberglass, and plastic materials and many types of foam padding and fabrics; Can be used to seal RV roof leaks Fits perfectly in the ribs of van floors or truck beds Easy-to-cut material easily conforms to a variety of shapes 2.5 mm thick butyl rubber with aluminum facing, 1.5 In. wide by 20 Ft. long