{"product_id":"larsen-acrylic-primer","title":"Larsen Acrylic Primer for Tiling \u0026 Screeding 1L \u0026 5L","description":"\u003cp\u003e\u003cstrong\u003eLarsen Acrylic Primer\u003c\/strong\u003e is a ready-to-use, water-based primer for porous and difficult surfaces before tiling or screeding. It also seals gypsum plaster and screeds before cement-based tile adhesive goes on. Use it neat to seal, or diluted 1:1 with clean water for general priming.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to use\u003c\/strong\u003e: water-based polymer emulsion, supplied ready for use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimes or seals\u003c\/strong\u003e: dilute 1:1 for general priming, or use neat to seal gypsum plaster and screeds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproves adhesion\u003c\/strong\u003e for Larsen tile adhesives and Larsen flooring products\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePink colour\u003c\/strong\u003e shows where it has been applied\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouch dry in under 1 hour\u003c\/strong\u003e on porous surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderfloor heating\u003c\/strong\u003e: suitable for heated concrete and cement screeds up to a maximum surface temperature of 35°C\u003c\/li\u003e\n\u003cli\u003eTools clean up with warm water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specification\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack sizes\u003c\/td\u003e\n\u003ctd\u003e1 litre, 5 litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\u003c\/td\u003e\n\u003ctd\u003eWater-based liquid (polymer emulsion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003ePink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoverage (neat)\u003c\/td\u003e\n\u003ctd\u003eapprox. 7–10 m² per litre (approx. 35–50 m² per 5 litre)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoverage (diluted 1:1)\u003c\/td\u003e\n\u003ctd\u003eapprox. 14–20 m² per litre (approx. 70–100 m² per 5 litre)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilution\u003c\/td\u003e\n\u003ctd\u003eNeat to seal; 1:1 with clean water for general priming\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTouch dry\u003c\/td\u003e\n\u003ctd\u003eLess than 1 hour on porous substrates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercoat\u003c\/td\u003e\n\u003ctd\u003e2–4 hours at 20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReady for adhesive or screed\u003c\/td\u003e\n\u003ctd\u003eWhen dried clear, typically within 1–2 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication temperature\u003c\/td\u003e\n\u003ctd\u003e+5°C to +30°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnderfloor heating\u003c\/td\u003e\n\u003ctd\u003eHeated concrete and cement screeds, max. surface temperature 35°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e1.01–1.03 g\/cm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH\u003c\/td\u003e\n\u003ctd\u003e7.0–9.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDry matter content\u003c\/td\u003e\n\u003ctd\u003eApprox. 20% by weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShelf life\u003c\/td\u003e\n\u003ctd\u003eTypically up to 18 months in good storage conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eSealed containers, dry conditions, protected from extremes of temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003ePer-5-litre coverage is simply Larsen's per-litre figure multiplied by five.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhere to use it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePorous and difficult substrates before tiling or screeding (see our \u003ca href=\"\/collections\/floor-levelling-preparation\"\u003efloor levelling and preparation\u003c\/a\u003e range)\u003c\/li\u003e\n\u003cli\u003eGypsum plasters and screeds, sealed before cement-based tile adhesives\u003c\/li\u003e\n\u003cli\u003eDense and porous surfaces before any Larsen \u003ca href=\"\/collections\/tile-adhesives\"\u003etile adhesive\u003c\/a\u003e or Larsen flooring product, such as \u003ca href=\"\/collections\/self-levelling-compound\"\u003eself-levelling compound\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeated concrete and cement screeds (underfloor heating) up to a maximum surface temperature of 35°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to dilute\u003c\/h3\u003e\n\u003cp\u003eAcrylic Primer comes ready to use but may need diluting with an equal volume of clean water (1:1), depending on the job. Diluted primer should stay usable for several days; just mix well before use.\u003c\/p\u003e\n\u003ch3\u003eHow to apply\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the surface.\u003c\/strong\u003e It should be hard, structurally sound and stable, surface dry, and free from significant laitance, dust or other contamination that could affect adhesion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral priming of porous surfaces (not sealing):\u003c\/strong\u003e dilute 1:1 with clean water and apply. Very porous substrates may need a second coat once the first has dried.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealing surfaces such as gypsum plaster:\u003c\/strong\u003e apply a first coat diluted 1:1 and let it dry, then apply a second coat neat. Don't let neat primer pond. Two or more neat coats may be needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTile or screed once the primer has dried clear\u003c\/strong\u003e, typically within 1–2 hours. For two coats, the usual practice is the first coat in the evening and the second the next morning, before tiling or screeding.\u003c\/li\u003e\n\u003cli\u003eProtect primed surfaces from traffic and contamination until the final product is applied. If the primer has been left to fully dry and cure for several days, adhesion may be impaired and a further coat of primer may be needed.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eWork to current best practice, including BS 8203 and BS 8204 and TTA, CFA and FeRFA guidance. Priming should never be used to try to improve a poor or failing substrate. When applying neat, take care that the primer doesn't skin, which can lead to delamination.\u003c\/p\u003e\n\u003ch3\u003eDelivery \u0026amp; support\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFree UK delivery on orders over £499 including VAT\u003c\/li\u003e\n\u003cli\u003e14-day returns\u003c\/li\u003e\n\u003cli\u003eVisit our showroom: Unit B2, Stag Industrial Estate, Endemere Road, Coventry CV6 5PY. Open Mon–Fri 9am–6pm, Sat 10am–5pm, closed Sunday.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSource: \u003ca href=\"https:\/\/larsenbuildingproducts.com\/?jet_download=37151a3d7787ce6bfcff6ef2a9a58086e3abe6e0\" target=\"_blank\" rel=\"noopener\"\u003eLarsen Acrylic Primer technical data sheet\u003c\/a\u003e (Version 02, Nov 2024) and the \u003ca href=\"https:\/\/larsenbuildingproducts.com\/product\/acrylic-primer\/\" target=\"_blank\" rel=\"noopener\"\u003eLarsen Acrylic Primer product page\u003c\/a\u003e. Always follow the current Larsen technical data sheet.\u003c\/p\u003e\n","brand":"Larsen","offers":[{"title":"1 litre","offer_id":59609282314585,"sku":"LAR-ACRPRIMER-1L","price":8.95,"currency_code":"GBP","in_stock":true},{"title":"5 litre","offer_id":59609282347353,"sku":"LAR-ACRPRIMER-5L","price":22.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1055\/1142\/0249\/files\/larsen-acrylic-primer-5-litre.webp?v=1790606570","url":"https:\/\/arktiles.co.uk\/products\/larsen-acrylic-primer","provider":"Ark Tiles","version":"1.0","type":"link"}