Mapei Mapeguard UM Uncoupling Membrane Underlayment

Original price was: $1.39.Current price is: $1.29.


Mapeguard UM is a high-performance, lightweight waterproofing and vaporpressure-equalizing underlayment membrane that provides crack suppression for ceramic tile and stone installations in both residential and commercial settings. It is engineered to withstand tough 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. Mapeguard UM’s unique engineered tri-layered architecture absorbs lateral tension from the substrate without passing this force to the tile or stone, ensuring an outstanding connection.


  • Thickness: 1/8 Inch
  • Square Feet per roll : 323


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