This is one of the very best!
Quietwalk's revolutionary underlayment smooths out minor sub floor imperfections while quieting impact sound and floor to ceiling noise. 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.
Warranted for all floating floor brands
Indoor air quality certified
Disperses moisture away from the floor
Sound transmission class 54
Field impact insulation class 60
Adds an R-Value of .50 to the floor system.