Mapesonic 2 from MAPEI a sound-reduction productMAPEI said its new Mapesonic 2 sound-reduction membrane reduces transmission of both impact and airborne sound. The membrane, for both residential and commercial environments, also prevents movement up to 3/8” wide from transmitting through flooring assemblies. Mapesonic 2 also offers crack isolation properties. For details, circle 198 on the Reader Inquiry Card.