QuietWalk 100 sq. ft. 36 in. W x 33.3 ft. L x 3 mm T Underlayment w/Sound & Moisture Barrier for Laminate & Wood Floors (30Pk) QW100B1LT - The Home Depot
Floating Floor Underlayment – Tesoro Woods
What is flooring underlay?
5mm Sonic Gold Flooring Underlay Available at Leader Trade