OmniChoice acoustical underlayment is a patented high-density polyurethane acoustic foam that significantly reduces unwanted noise by up to 22 dB. It meets or exceeds acoustical code requirements for residential and commercial flooring applications. Works great beneath vinyl plank, laminate, engineered wood, solid hardwood, ceramic tile and stone tile flooring. It is suitable for use over subfloor substrates such as plywood, concrete, OSB and cement board. And it can be used in floating, nail down and glue down installation methods.