Super SAM® 125  is a thin (approx.1/8" thick), self-adhering, sound deadening sheet membrane chemically formulated to reduce airborne (STC) and impact (IIC) sound transmission when used under stone, ceramic and porcelain tile, wood and other hard surface flooring. Super SAM® 125 is composed of modified elastomers, sound deadening resins and reinforced woven fibers and is designed for use in applications without a sound rated ceiling assembly.