Boom Mat Moldable(TM) Barrier is a highly flexible .5lb/ft2 sound and moisture barrier designed for those applications where a budget conscious, simple noise control solution is needed. Conforms to the shape of your chassis, or for more intricate areas, can be molded with a heat gun. Even becomes quite flexible by simply warming the BM-MD outside on a sunny day. Easily installs with scissors and a heat gun and bonds itself where seaming is necessary. It's waterproof properties, along with its thin profile, make it perfect for a sound and moisture barrier behind door panels. Can also be used with a decoupler such as the Boom Mat Lite for increased acoustical efficiency, an important consideration especially in the firewall area, or to control exhaust noise in the cabin. Easy installation Cost effective sound and moisture barrier Custom molded fit with heat application Easy removal for repairs or service Perfect for replacing kraft paper or plastic door moisture barriers Only 1/16 in. thick