Acoustical Decoupler nine/64" Stops sounds transfer by means of CARPETING, Wooden flooring, laminate flooring, tile flooring and vinyl flooring. Also use on concrete for a moisture barrier and to prevent cold transfer with the product has an R worth of .5. This nine/64" thick cellular bolstered rubber with fiberglass cellulose https://wardo876xfn4.wikilinksnews.com/user