MAPEI’s Mapeguard® UM

MAPEI’s Mapeguard® UM is a lightweight, waterproofing and vapor pressure-equalizing underlayment that provides crack suppression under ceramic tile and stone installations, for both residential and commercial applications. It’s designed for use over challenging substrates, such as young concrete and single-layer 3/4″ (19 mm) plywood subfloors with joist spacing of up to 19.2″ (49 cm) on center. Uniquely engineered, it absorbs lateral stress from the substrate without transferring this force to the tile or stone, maintaining exceptional bonds.www.mapei.com. 

MAPEI Mapeguard UM