Acoustical Decoupler nine/64" Stops sound transfer through CARPETING, wood flooring, laminate flooring, tile flooring and vinyl flooring. Also use on concrete as a dampness barrier and to stop cold transfer to the item has an R worth of .5. This 9/sixty four" thick mobile reinforced rubber with fiberglass cellulose backing https://joshuao754vou5.nytechwiki.com/user