Mapeguard UM Underlayment Membrane - 54 sq. ft. (5 m²) Roll

$100⁸⁰ USD

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Brand: Mapei | SKU: 2850905 | MPN:

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Mapeguard UM Underlayment Membrane - 54 sq. ft. (5 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 in both commercial and residential applications on the most challenging substrate surfaces, such as young concrete and single-layer 3/4" plywood floors. 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.

Features

Dimensions: 39.4 in x 16.4 ft
Prevents transmission of in-plane substrate cracks up to 1/8" (3 mm)
Recommended for use with polymer-modified mortars
Fast Track Ready - approved for use over young (green) concrete and mortar beds
Time-saving: Embed membrane, then install tile immediately
Engineered cavity design allows easy single-pass filling of the surface core with less mortar
Uncoupling, waterproofing, and water vapor membrane up to 25 lbs. (11,3 kg) MVER and 100% relative humidity
Compression resistance to support rolling loads
Approved for radiant-heating applications
The light green, translucent color shows mortar coverage under the membrane
Reduced “roll memory” and unique tri-layer construction keep the membrane flat
Easy to cut with a standard utility knife
Chalk and laser lines are easily visible on the surface
The mesh-fabric top layer makes it easy to fill cavities with mortar

Suitable Substrates

Concrete
Cement mortar beds, self-leveling underlayment, and leveling coats
Young (green) concrete
Industry-approved exterior-grade plywood and APA Sturd-I-Floor, Exposure 1 OSB (interior, dry areas only)
Approved backer units – see manufacturer’s installation guidelines
Cement terrazzo (adequately prepared interior only)
Existing ceramic tile or stone (adequately prepared interior only)
Radiant-heat systems
Existing, properly prepared vinyl flooring – vinyl composition tile (VCT), non-cushioned paper-backed/felt-backed sheet vinyl, luxury vinyl tile/plank (LVT/LVP)
Epoxy terrazzo (with appropriate bond testing – interior only)
Gypsum underlayment or lightweight concrete