Skip to main content
Mapeguard UM Underlayment Membrane, 323 sq-ft Coverage Area, 98.4 ft L, 39.4 in W, 1/64 in Thick Green/White

Roll over image to zoom in

  • Product Features

  • Product Overview

  • Related Videos

  • Reviews

  • Questions & Answers

MAPEI 2850930 Mapeguard UM Underlayment Membrane, 323 sq-ft Coverage Area, 98.4 ft L, 39.4 in W, 1/64 in Thick Green/White

Item #: 2850930 by MAPEI

UPC #: 093994285034

See reviews See reviews
HURRY! Low in stock

$661.55

/roll
SAVE UP TO 66.16

Buying in bulk

QUICK SHIPPING*Usually ships in 1 business day
QTY
–
+
+ Add to Wishlist
Buy in Bulk & Save - See How Watch Now
Large Order Quote

Shop with Confidence

30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.

Safe Payment
  • Prevents transmission of in-plane substrate cracks up to 1/8 in
  • 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 surface core with less mortar
  • Uncoupling, waterproofing and water vapor membrane up to 25 lb MVER and 100% relative humidity
  • Compression resistance to support rolling loads
  • Approved for radiant-heating applications
  • Light green, translucent color shows mortar coverage under membrane
  • Reduced roll memory and unique tri-layer construction keep membrane flat

Nomenclature

2850930 MEMBRANE TILE 323SQ FT

Color

Green/White

Width

39.4

Length

98.4

Thickness

1/64"

Material

Polypropylene

MEMBRANE UNDERLAYMENT 323SQ FT
Specifications:

Application: For apartments and condominiums, galleries and malls, homes, office buildings, restaurants

Underlayment membrane for ceramic tile and stone. Mapeguard UM is a premium-performance, lightweight, waterproofing and vapor-pressure-equalizing underlayment membrane that provides crack suppression for use under ceramic tile and stone installations, for both residential and commercial applications. It is designed to perform over challenging substrates, such as young concrete and single-layer 3/4 in plywood subfloors with joist spacing of up to 19.2 in on center. 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.