DuoFoam 40 In. W x 30.3 Ft. L Self-Seal Underlayment, 100 Sq. Ft./Roll

A underlayment designed for floating laminate and wood floors over a concrete slab or any surface that requires moisture resistance. Duofoam features heat laminated polythylene film layers on both sides of PolyFoam padding and an extended poly lip with self-seal tape for ease of installation. Roll size: 40" W. x 30.03' L. x .080" T. (100 sq. ft. per roll).