Mapeguard UM Underlayment Membrane - 323 sq. ft. (30 m²) Roll by Mapei
Mapei's Mapeguard UM is a lightweight uncoupling mat for use under ceramic tile and stone installations and can also work as a waterproofing and vapor-pressure-equalizing underlayment. This versatile underlayment membrane can perform on the most challenging substrate surfaces, such as young concrete and single-layer 3/4" plywood floors, in both commercial and residential applications. The unique engineered tri-layered design of Mapeguard UM absorbs lateral stress from the substrate without transferring this force to the tile or stone, which maintains exceptional bonds.