MAPEI’s Mapesonic 2 offers next-generation technology, combining sound reduction and crack isolation in a thin, flexible, lightweight, load-bearing, fabric-reinforced peel-and-stick membrane approved for ceramic tile, stone and wood flooring. Mapesonic 2 is ideal for sound reduction in both residential and light commercial environments. The membrane also helps prevent movement up to 3/8" wide from transmitting through flooring assemblies.