Specifically designed to soundproof under carpet for both footstep noise and airborne noise. At only 3/8" thick you can use our soundproofing carpet underlay as a substitute for regular carpet pad. Whether you are doing a renovation or new construction you can count on remarkable results in your floor soundproofing project. Finally there is a true floor soundproofing product for use under carpet that is ideal to replace plain carpet pad. Our Performance Carpet Underlay is your one step soundproofing solution for any new or existing carpet floors. It's specifically designed to soundproof under carpet for both footstep noise and airborne noise. At only 3/8" thick you can use our soundproofing carpet underlay as a substitute for regular carpet pad.