Interior panels vibrate and generate noise. Boom Mat stops that noise by trapping it between our thick, 4 milaluminum stiffening top skin, and the asphalt free, pure butyl, noise constraining layer. Plus worry-free no sagadhesion to any interior surface, vertical or overhead, even in the most demanding of temperature extremes.Those quality components are what make Boom Mat Vibration Damping Material require only 25-50% coverageto get the job done. This saves weight, material cost and installation time.