{"title":"Primers \u0026 Sealants","description":"\u003cp\u003eSchluter® PRIMER-PS and PRIMER-U primers for waterproofing and uncoupling membranes.\u003c\/p\u003e","products":[{"product_id":"schluter-primer-u-universal-primer","title":"Schluter® PRIMER-U Universal Primer","description":"\u003cp\u003ePRIMER-U is Schluter's universal primer — a ready-to-use, water-based formula that improves the bond of thin-set mortar to substrates that resist adhesion. Where PRIMER-PS is specifically for peel-and-stick membranes, PRIMER-U works with standard mortar-set Schluter products (DITRA, KERDI, KERDI-BOARD) and general tile installation.\u003c\/p\u003e\n\n\u003cp\u003eUse it when your substrate is too smooth, too dense, or has residual contamination that would compromise mortar adhesion. It creates a bonding bridge between the substrate and the thin-set.\u003c\/p\u003e\n\n\u003ch4\u003eWhen to use PRIMER-U\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDense concrete:\u003c\/strong\u003e Machine-troweled or power-floated slabs that are too smooth for mortar to grip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExisting tile or stone:\u003c\/strong\u003e When tiling over existing surfaces without removing them\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-porous surfaces:\u003c\/strong\u003e Metal, glass, or coated substrates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContaminated substrates:\u003c\/strong\u003e Surfaces with residual adhesive, paint, or curing compounds that can't be fully removed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen unsure:\u003c\/strong\u003e Primer is cheap insurance — if the substrate feels slick or sealed, prime it\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eApplication\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eStir well — do NOT dilute\u003c\/li\u003e\n\u003cli\u003eApply one thin, even coat with a roller, brush, or sprayer\u003c\/li\u003e\n\u003cli\u003eLet dry to a clear, tacky film (typically 30–60 min depending on conditions)\u003c\/li\u003e\n\u003cli\u003eApply thin-set mortar while primer is still tacky (within the open time window)\u003c\/li\u003e\n\u003cli\u003eRoom temp 40–85°F, humidity below 80%\u003c\/li\u003e\n\u003cli\u003eCoverage: ~200–350 sq ft per gallon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eType: Ready-to-use, water-based universal primer\u003c\/li\u003e\n\u003cli\u003eCompatible with: Standard mortar-set DITRA, KERDI, KERDI-BOARD, general tile\u003c\/li\u003e\n\u003cli\u003eNot for: Peel-and-stick membranes (use PRIMER-PS instead)\u003c\/li\u003e\n\u003cli\u003eCoverage: ~200–350 sq ft\/gallon\u003c\/li\u003e\n\u003cli\u003eShelf life: 12 months from manufacture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003ePRIMER-PS vs. PRIMER-U — which one?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePRIMER-PS:\u003c\/strong\u003e For peel-and-stick (-PS) membranes only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePRIMER-U:\u003c\/strong\u003e For everything else — mortar-set membranes, tile, KERDI-BOARD\u003c\/li\u003e\n\u003cli\u003eThey're not interchangeable. Using the wrong one won't necessarily fail, but it won't perform as tested and may void the Schluter warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003ePairs with\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDITRA, KERDI, KERDI-BOARD — mortar-set membranes\u003c\/li\u003e\n\u003cli\u003eSchluter SET, ALL-SET, or FAST-SET mortar\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Schluter","offers":[{"title":"1 Gallon (3.78 L)","offer_id":48064068616359,"sku":"PRMU1","price":93.65,"currency_code":"CAD","in_stock":true},{"title":"1 Quart (946 mL)","offer_id":48064068649127,"sku":"PRMUQT1","price":35.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0569\/3954\/4743\/files\/PRIMER-U-1-gallon.jpg?v=1773093364"},{"product_id":"schluter-primer-ps-peel-stick-primer","title":"Schluter® PRIMER-PS Peel \u0026 Stick Primer","description":"\u003cp\u003ePRIMER-PS is a ready-to-use primer specifically formulated to improve the bond between Schluter's peel-and-stick membranes (DITRA-PS, DITRA-HEAT-PS, DITRA-HEAT-DUO-PS) and substrates that are harder to stick to. Think OSB, gypsum concrete, vinyl, and plywood — surfaces where the PSA alone might not grab hard enough for a permanent bond.\u003c\/p\u003e\n\n\u003cp\u003eIt's a one-component, solvent-free, water-based formula. No mixing, no additives. Pour it out, roll or brush it on, let it dry to a clear film, then apply your peel-and-stick membrane directly over it.\u003c\/p\u003e\n\n\u003ch4\u003eWhen do you actually need it?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlways use on:\u003c\/strong\u003e OSB (including Advantech), gypsum concrete, existing vinyl or VCT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended on:\u003c\/strong\u003e Plywood in humid environments, older concrete with surface contamination\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot needed on:\u003c\/strong\u003e Clean, smooth concrete — DITRA-PS sticks directly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRule of thumb:\u003c\/strong\u003e If the substrate is porous, textured, or you're unsure — prime it. A $30 bottle of primer is cheap insurance against a membrane that lifts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eApplication\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eStir thoroughly before use (settling is normal) — do NOT dilute\u003c\/li\u003e\n\u003cli\u003eApply with a paint roller, brush, or pour from container onto substrate\u003c\/li\u003e\n\u003cli\u003eOne even coat — avoid puddling (excess primer = longer dry time, weaker bond)\u003c\/li\u003e\n\u003cli\u003eLet dry completely to a clear, tacky film before applying membrane\u003c\/li\u003e\n\u003cli\u003eRoom temp between 40–85°F (5–30°C), humidity 35–55%\u003c\/li\u003e\n\u003cli\u003eCoverage: approximately 200–350 sq ft per gallon depending on substrate porosity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eStorage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShelf life: 12 months from manufacture date (check label)\u003c\/li\u003e\n\u003cli\u003eStore between 50–90°F (10–32°C)\u003c\/li\u003e\n\u003cli\u003eSurvives 1 freeze-thaw cycle at 0°F (-18°C) — thaw at room temp before use\u003c\/li\u003e\n\u003cli\u003eKeep container sealed when not in use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eType: Ready-to-use, water-based primer\u003c\/li\u003e\n\u003cli\u003eCompatible with: DITRA-PS, DITRA-HEAT-PS, DITRA-HEAT-DUO-PS\u003c\/li\u003e\n\u003cli\u003eSubstrates: OSB, plywood, gypsum concrete, vinyl, concrete\u003c\/li\u003e\n\u003cli\u003eCoverage: ~200–350 sq ft\/gallon\u003c\/li\u003e\n\u003cli\u003eDry time: Varies by conditions — clear film indicates readiness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003ePairs with\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAll Schluter peel-and-stick (-PS) membranes\u003c\/li\u003e\n\u003cli\u003eDITRA-ROLLER — for embedding membrane after primer dries\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Schluter","offers":[{"title":"1 Quart (946 mL)","offer_id":48064074154151,"sku":"PRMPSQT1","price":27.65,"currency_code":"CAD","in_stock":true},{"title":"1 Gallon (3.78 L)","offer_id":48064074186919,"sku":"PRMPS1","price":77.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0569\/3954\/4743\/files\/prod_PRIMER-PS_1_20Qt_web.jpg?v=1773093379"}],"url":"https:\/\/www.yourfloors.ca\/collections\/schluter-primers-sealants.oembed","provider":"yourfloors","version":"1.0","type":"link"}