Quiet Walk?? underlayment is the hallmark product of MP Global Products. Our revolutionary "Quiet Walk??" laminate floor underlayment smoothes out little sub floor imperfections while quieting impact sound and floor to ceiling noise. Not only does it dampen ambient sound in the room it"s installed in, but it also inhibits sound from traveling into the room below. Although it is promoted as an upgrade underlayment taking the place of poly foam, it doesn"t carry a heavy upgrade price when compared to cork or rubber. On the other hand, in recent head-to-head Sound Transmission Loss tests, Quiet Walk?? outperformed both cork and rubber in the majority of test band frequencies. Certified field sound tests were performed on an installation over a standard concrete sub floor, and received an FIIC score of "60". In addition to its sound deadening benefits, the absorbing action of the synthetic fibers together with the attached vapor barrier provides superior moisture protection that is backed by a Limited Lifetime warranty. Another benefit is the increase in R-value to help keep floors warm in the winter, and cool in the summer. Quiet Walk?? is available in 100 square foot do-it-yourself size rolls