Professional, Sound-Reduction and Crack-Isolation Sheet Membrane

Mapesound 90 is a flexible, thin, 90-mil, lightweight, load-bearing, fabric-reinforced “peel-and-stick” sound-reduction and crack-isolation membrane. After application, ceramic tile or stone can be installed immediately with a recommended MAPEI polymer-modified cement-based mortar, or glue-down wood flooring can be immediately installed with any MAPEI urethane or hybrid-polymer-based wood adhesive.

Mapesound 90 reduces transmission of impact sound (footsteps, dropped objects, etc.) and airborne sound (voice, TV, etc.) through floors when installed under ceramic tile, stone or wood floor coverings. It also helps to prevent existing or future in-plane floor cracks (with movement up to 3/8" [10 mm] wide) from transmitting through grout, ceramic tile or natural-stone assemblies.