{"product_id":"mapei-mapeguard-um-35-uncoupling-crack-isolation-waterproofing-vapor-management-membrane-323-sq-ft-roll","title":"Mapei Mapeguard UM 35 Uncoupling Crack Isolation Membrane, 323 Sq Ft Roll (3.3 Ft x 98.5 Ft) for Ceramic Tile And Stone Tile, 1\/8 Inch Thick HDPE Waterproofing Flooring Underlayment","description":"\u003cp\u003e\u003cstrong\u003eProduct Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"39\" data-start=\"2\"\u003eHigh-Performance Crack Isolation: \u003c\/strong\u003eHigh-performance uncoupling membrane controls substrate cracks up to 1\/8″ (3 mm) for reliable tile or stone installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"197\" data-start=\"165\"\u003eWaterproof Vapor Protection: \u003c\/strong\u003eWaterproof and vapor-management layer enables up to 25 lb MVER and 100% relative humidity control via air-channel design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"351\" data-start=\"322\"\u003eLow-Profile Tile Support: \u003c\/strong\u003eLow-profile 1\/8″ thickness reduces floor build-up while offering robust support for large-format tile, porcelain, stone, ceramic, and mosaic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"532\" data-start=\"496\"\u003eExtra-Heavy Commercial Strength: \u003c\/strong\u003eExtra-heavy commercial rating certified ASTM C627 for heavy traffic use in residential, commercial, hotel, hospital, spa, and gallery settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"709\" data-start=\"679\"\u003eHeavy-Duty Honeycomb Core: \u003c\/strong\u003eHDPE honeycomb structure with polypropylene backing enhances mechanical strength, compression resistance, and support for heated, underfloor heating or LVT systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"905\" data-start=\"877\"\u003eSuperior Mortar Bonding: \u003c\/strong\u003eUniform coverage for direct tile adhesion with built-in fleece backing that improves mortar bonding for ceramic tile, porcelain tile, natural stone, granite, marble, and travertine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1126\" data-start=\"1090\"\u003eSemi-Transparent Surface Design: \u003c\/strong\u003eSemi-transparent surface allows visual inspection of adhesive coverage and accurate placement over drains or penetrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1281\" data-start=\"1252\"\u003eFast \u0026amp; Easy Installation: \u003c\/strong\u003eEasy to cut, roll out, and install holds chalk lines, lies flat, quick to trim—ideal for contractors and DIY projects alike.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1443\" data-start=\"1410\"\u003eAdvanced Moisture Management: \u003c\/strong\u003eVapor-release channels manage moisture from green concrete or plywood substrates, preventing mold, delamination, and grout cracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-is-only-node=\"\" data-end=\"1612\" data-start=\"1579\"\u003eIndoor \u0026amp; Outdoor Versatility: \u003c\/strong\u003eSuitable for interior and exterior use approved for balconies, terraces, showers, bathrooms, and steam rooms with proper waterproof tape integration.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Description:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMapeguard UM 35 is a premium HDPE uncoupling, crack-isolation, waterproofing, and vapor-control membrane designed for ceramic tile, porcelain tile, natural stone, and large-format tile installations on challenging substrates. Its honeycomb structure and low-profile design make it ideal for commercial, residential, hospital, hotel, spa, and retail settings. At just 1\/8″ (3 mm) thick, this membrane delivers ASTM-certified extra-heavy duty support, distributing point loads while isolating substrate movement. Its waterproof nature and 25 lb MVER vapor control protect floors from moisture intrusion, even on newly poured concrete or un-cured plywood. The semi-transparent design helps installers ensure complete thin-set adhesive coverage beneath stone tile or mosaic.\u003c\/p\u003e\n\u003cp\u003eMade for efficiency, UM 35 holds chalk lines, lies flat without curling, and cuts easily—streamlining tile installation in kitchens, bathrooms, showers, and terraces. It supports heated floor systems, with perforated channels that evenly distribute heat and allow air and vapor to escape. With mechanical strength suitable for heavy foot traffic, commercial kitchens, hospital floors, and outdoor balconies, UM 35 is versatile and built to last. It installs easily with standard polymer-modified thin-set mortar (C2) and seals, such as Mapeband Easy, to create a fully waterproof underlayment. When paired with proper grout (e.g., Ultracolor Plus) and adhesives, UM 35 ensures long-term durability, moisture resistance, crack prevention, and freeze-thaw protection.\u003c\/p\u003e\n\u003cp\u003eMapeguard UM 35 supports tile-over-tile, resilient flooring, and heated-slab installations while providing uncoupling, anti-fracture protection, waterproofing, and vapor management all in one roll. If you're looking for a single product to simplify installation, prevent cracks, and prolong the lifespan of ceramic, porcelain, stone, or marble floors—whether for DIY home use or professional commercial projects—UM 35 is the solution. This roll covers approximately 323 square feet and meets guidelines for interior, exterior, wet-room, and steam-room applications (check local use approvals). Elevate your next tile flooring or renovation project with Mapei’s high-performance Mapeguard UM 35.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ciframe style=\"font-size: 0.875rem;\" src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/28d18b65f1804be8b85d744fdef05236.mp4\" height=\"440\" width=\"100%\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Mapei","offers":[{"title":"Default Title","offer_id":43919758393561,"sku":"MAPEI_MEMB_06","price":364.07,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/4676\/8089\/files\/Listing_Pics_5_6f0ec0a7-211f-4490-a53e-353902911073.png?v=1781878085","url":"https:\/\/gtdsupply.com\/products\/mapei-mapeguard-um-35-uncoupling-crack-isolation-waterproofing-vapor-management-membrane-323-sq-ft-roll","provider":"Global Trade \u0026 Distribution Inc.","version":"1.0","type":"link"}