Acoustic underlayment membrane

The Mapesonic RM acoustic underlayment from Mapei is a rubber membrane designed to reduce the passage of ambient and impact sound transmissions for ceramic tile and stone installations.

Composed of dense post-consumer rubber, the product is available in thicknesses of 3/16 in. or 5 mm (Mapesonic RM 5), as well as 3/8 in. or 10 mm (Mapesonic RM 10).

The rubber reduces impact noise when used as an underlayment as part of a tile or stone installation system. Impact Insulation Class (IIC) acoustical testing yields results of 50 to 64, depending on floor/ceiling assembly.

In addition to noise reduction, the product helps to prevent existing and future in-plane substrate cracks with movement up to 1/8 in. (3 mm) from transmitting through ceramic tile and natural stone.

The underlayment passes the requirements of ANSI A118.12, Section 5.4. In addition, because it contains 82 percent post-consumer and 1 percent pre-consumer recycled content, it is GreenCircle certified.