This ripoff stuff is the same as plastidip and ten times the cost! You can brush it on in multiple coats, depending on how thick you want it. It will waterproof anything and is non-conductive. If you want powerful sound proofing, brush it on then apply 3/8-1/2" foam of any kind. I like the "memory" foam and it's cheap! You can use this for your car or hot rod if the rattle trap makes too much racket for ya! Especially in those doors that sound like a tin box when you close them!! Try it, you'll like it!!