Reduces both reflective sound noise and through the floor sound transmission Exceeds recommended moisture permeability ratings for installation over concrete slabs Helps to eliminate minor subfloor imperfections Manufactured by SilentPadTM Thickness: 3mm Sq. ft. per roll: 200 Color: blueSuitable for use over both concrete and wood subfloors and for all commercial applications.Underlayment comes with Limited Lifetime Warranty!