{"title":"Underlayment \u0026 Waterproofing","description":"\u003cp\u003eLiquid waterproofing membranes and underlayment for tile and stone. Roll, brush or trowel on for a seamless, crack-resistant waterproof barrier.\u003c\/p\u003e","products":[{"product_id":"greenseel-waterproofing-membrane-1-gallon","title":"GreenSeel Liquid Waterproofing Membrane – 1 Gallon Pail","description":"\u003cp\u003e\u003cstrong\u003eGreenSeel Liquid Waterproofing Membrane\u003c\/strong\u003e is a single-component, ready-to-use liquid rubber membrane that rolls, brushes, or trowels on to create a seamless, crack-resistant, waterproof barrier under tile and stone — no mixing, no sheet seams, no sealing tape across the field of the installation. This 1 gallon pail covers approximately 50 sq ft — sized right for a single shower or small bathroom floor.\u003c\/p\u003e\n\u003ch3\u003eWhy installers use it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless, liquid-applied barrier.\u003c\/strong\u003e No cutting or fitting sheet membrane around drains, corners, or pipe penetrations — it flows into every gap and cures as one continuous waterproof layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI A118.10 \/ A118.12 approved.\u003c\/strong\u003e Meets the industry standard for waterproofing membranes and for crack-isolation membranes used under ceramic tile and stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrack prevention up to 3\/8″.\u003c\/strong\u003e Bridges hairline and moderate substrate cracks so they don’t telegraph up through the finished tile or grout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents mold and mildew growth\u003c\/strong\u003e in wet areas like showers, steam rooms, and pool decks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply with a brush, roller, or trowel\u003c\/strong\u003e — whatever tool fits the job and the surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoubles as a shower pan liner\u003c\/strong\u003e when built up to spec over a properly sloped mortar bed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere to use it\u003c\/h3\u003e\n\u003cp\u003eShower and tub surrounds, shower pans, steam rooms, swimming pool decks and interiors, water features, laundry and mudroom floors, kitchen and bath floors before tile, and floors with electric or hydronic radiant heating systems. Rated for both interior and exterior tile and stone installations.\u003c\/p\u003e\n\u003ch3\u003eWhat it bonds to\u003c\/h3\u003e\n\u003cp\u003eConcrete (porous and non-porous), lightweight concrete, gypcrete\/gypsum underlayments, OSB, plywood, existing vinyl, epoxy coatings, existing glazed or unglazed tile, natural stone, terrazzo, PVC, steel\/aluminum\/stainless steel, adhesive residue, cement backer board, and polystyrene foam products.\u003c\/p\u003e\n\u003ch3\u003eHow to apply GreenSeel Waterproofing Membrane\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrep the substrate.\u003c\/strong\u003e Surface should be clean, sound, and free of dust, grease, and loose debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforce the details.\u003c\/strong\u003e At inside corners, outside corners, seams, and pipe penetrations, embed a reinforcing fabric strip into a wet coat of membrane before proceeding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply the first coat.\u003c\/strong\u003e Brush, roll, or trowel an even coat over the full field of the substrate, working the membrane into any texture or minor imperfections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLet it dry, then recoat.\u003c\/strong\u003e Allow the first coat to dry to the touch, then apply a second coat at a 90° angle to the first for full, even coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCure before tiling.\u003c\/strong\u003e Let the membrane cure fully per the current technical data sheet before setting tile or stone.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFull cure times, coverage rates, and installation details are on the manufacturer’s technical data sheet — ask us if you’d like a copy before you start a job.\u003c\/p\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1 gallon pail\u003c\/li\u003e\n\u003cli\u003eCoverage: approximately 50 sq ft\u003c\/li\u003e\n\u003cli\u003eColor: green liquid, cures to a seamless membrane\u003c\/li\u003e\n\u003cli\u003eMaterial: rubber-based liquid membrane\u003c\/li\u003e\n\u003cli\u003eApplication tools: brush, roller, or trowel\u003c\/li\u003e\n\u003cli\u003eStandards: ANSI A118.10, ANSI A118.12\u003c\/li\u003e\n\u003cli\u003eCountry of origin: United States\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a second coat?\u003c\/strong\u003e Yes — two coats, applied cross-directionally, is the standard install for full waterproofing coverage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this outdoors?\u003c\/strong\u003e Yes, GreenSeel is rated for both interior and exterior tile and stone installations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it bridge cracks in my subfloor?\u003c\/strong\u003e It’s rated to bridge substrate cracks up to 3\/8″ wide.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it as a shower pan liner?\u003c\/strong\u003e Yes, when built up over a properly sloped mortar bed per standard shower pan practice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs 1 gallon enough for my project?\u003c\/strong\u003e A 1 gallon pail covers about 50 sq ft — typically enough for one shower or a small bathroom floor. For larger bathrooms or multiple rooms, size up to the 2 gallon pail (~100 sq ft).\u003c\/p\u003e","brand":"GreenSeel","offers":[{"title":"Default Title","offer_id":40935422558337,"sku":"GS-WPM-1GAL","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/0951\/7953\/files\/200greenseelwaterproofingmembrane1gallonpail.jpg?v=1790453155"},{"product_id":"greenseel-waterproofing-membrane-2-gallon","title":"GreenSeel Liquid Waterproofing Membrane – 2 Gallon Pail","description":"\u003cp\u003e\u003cstrong\u003eGreenSeel Liquid Waterproofing Membrane\u003c\/strong\u003e is a single-component, ready-to-use liquid rubber membrane that rolls, brushes, or trowels on to create a seamless, crack-resistant, waterproof barrier under tile and stone — no mixing, no sheet seams, no sealing tape across the field of the installation. This 2 gallon pail covers approximately 100 sq ft.\u003c\/p\u003e\n\u003ch3\u003eWhy installers use it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless, liquid-applied barrier.\u003c\/strong\u003e No cutting or fitting sheet membrane around drains, corners, or pipe penetrations — it flows into every gap and cures as one continuous waterproof layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI A118.10 \/ A118.12 approved.\u003c\/strong\u003e Meets the industry standard for waterproofing membranes and for crack-isolation membranes used under ceramic tile and stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrack prevention up to 3\/8″.\u003c\/strong\u003e Bridges hairline and moderate substrate cracks so they don’t telegraph up through the finished tile or grout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevents mold and mildew growth\u003c\/strong\u003e in wet areas like showers, steam rooms, and pool decks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply with a brush, roller, or trowel\u003c\/strong\u003e — whatever tool fits the job and the surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoubles as a shower pan liner\u003c\/strong\u003e when built up to spec over a properly sloped mortar bed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere to use it\u003c\/h3\u003e\n\u003cp\u003eShower and tub surrounds, shower pans, steam rooms, swimming pool decks and interiors, water features, laundry and mudroom floors, kitchen and bath floors before tile, and floors with electric or hydronic radiant heating systems. Rated for both interior and exterior tile and stone installations.\u003c\/p\u003e\n\u003ch3\u003eWhat it bonds to\u003c\/h3\u003e\n\u003cp\u003eConcrete (porous and non-porous), lightweight concrete, gypcrete\/gypsum underlayments, OSB, plywood, existing vinyl, epoxy coatings, existing glazed or unglazed tile, natural stone, terrazzo, PVC, steel\/aluminum\/stainless steel, adhesive residue, cement backer board, and polystyrene foam products.\u003c\/p\u003e\n\u003ch3\u003eHow to apply GreenSeel Waterproofing Membrane\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrep the substrate.\u003c\/strong\u003e Surface should be clean, sound, and free of dust, grease, and loose debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforce the details.\u003c\/strong\u003e At inside corners, outside corners, seams, and pipe penetrations, embed a reinforcing fabric strip into a wet coat of membrane before proceeding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply the first coat.\u003c\/strong\u003e Brush, roll, or trowel an even coat over the full field of the substrate, working the membrane into any texture or minor imperfections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLet it dry, then recoat.\u003c\/strong\u003e Allow the first coat to dry to the touch, then apply a second coat at a 90° angle to the first for full, even coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCure before tiling.\u003c\/strong\u003e Let the membrane cure fully per the current technical data sheet before setting tile or stone.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFull cure times, coverage rates, and installation details are on the manufacturer’s technical data sheet — ask us if you’d like a copy before you start a job.\u003c\/p\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 2 gallon pail\u003c\/li\u003e\n\u003cli\u003eCoverage: approximately 100 sq ft\u003c\/li\u003e\n\u003cli\u003eColor: green liquid, cures to a seamless membrane\u003c\/li\u003e\n\u003cli\u003eMaterial: rubber-based liquid membrane\u003c\/li\u003e\n\u003cli\u003eApplication tools: brush, roller, or trowel\u003c\/li\u003e\n\u003cli\u003eStandards: ANSI A118.10, ANSI A118.12\u003c\/li\u003e\n\u003cli\u003eCountry of origin: United States\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a second coat?\u003c\/strong\u003e Yes — two coats, applied cross-directionally, is the standard install for full waterproofing coverage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this outdoors?\u003c\/strong\u003e Yes, GreenSeel is rated for both interior and exterior tile and stone installations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it bridge cracks in my subfloor?\u003c\/strong\u003e It’s rated to bridge substrate cracks up to 3\/8″ wide.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it as a shower pan liner?\u003c\/strong\u003e Yes, when built up over a properly sloped mortar bed per standard shower pan practice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size should I buy?\u003c\/strong\u003e A 2 gallon pail covers about 100 sq ft; a 1 gallon pail covers about 50 sq ft. Measure your square footage and add extra for a second coat and any waste at edges and corners.\u003c\/p\u003e","brand":"GreenSeel","offers":[{"title":"Default Title","offer_id":40935422591105,"sku":"GS-WPM-2GAL","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/0951\/7953\/files\/199greenseelwaterproofingmembrane2gallonpail.jpg?v=1790453156"}],"url":"https:\/\/besthomegoods.com\/collections\/underlayment-waterproofing.oembed","provider":"Best Home Goods","version":"1.0","type":"link"}