{"product_id":"watco-universal-sealer-dustproofer","title":"Watco Universal Sealer Dustproofer","description":"\u003cp\u003eWatco Universal Sealer Dustproofer penetrates porous concrete and masonry to strengthen dusty surfaces and reduce ongoing dusting. Its clear, water based micronised acrylic formulation works within the substrate, making it useful where a simple dustproofing treatment is needed without a conventional coloured floor coating.\u003c\/p\u003e\n\u003cp\u003eUse it on suitable bare concrete floors, sand and cement screeds, brickwork, blockwork, plaster and block paving. It is suitable indoors and outdoors, including factories, warehouses and machine shops. The microporous treatment allows the substrate to breathe and is normally applied in one coat with a soft broom. It may slightly darken some materials, so test an inconspicuous area where appearance matters.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePenetrating treatment for weak, dusty porous surfaces.\u003c\/li\u003e\n\u003cli\u003eClear, low odour, water based acrylic.\u003c\/li\u003e\n\u003cli\u003eSimple broom application; no two component mixing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSurface Preparation\u003c\/h3\u003e\u003cp\u003eSweep and vacuum away loose dust and material. The substrate must be dry, clean and absorbent: a small water-drop test should show water readily soaking in. Remove oil or grease with a suitable cleaner, rinse thoroughly and allow complete drying. Remove laitance mechanically; do not acid etch. The technical sheet guides four weeks drying for new concrete in summer or six in winter, with moisture below 75% RH.\u003c\/p\u003e\u003ch3\u003eTechnical Data\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes\u003c\/th\u003e\n\u003ctd\u003e5L and 25L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eSingle pack, water based micronised acrylic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eClear; may slightly darken the substrate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eInterior and exterior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum conditions\u003c\/th\u003e\n\u003ctd\u003eAir 15°C; floor 10°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShelf life\u003c\/th\u003e\n\u003ctd\u003e24 months unopened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eCoverage\u003c\/h3\u003e\u003cp\u003eAllow approximately 30m² per 5L or 150m² per 25L (6m²\/L), depending on absorption. One coat is usually sufficient, but very porous, open-textured surfaces may need further coats.\u003c\/p\u003e\u003ch3\u003eDirections for Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eShake the container well before use.\u003c\/li\u003e\n\u003cli\u003eDistribute with a soft broom and work the liquid into the surface so it is absorbed.\u003c\/li\u003e\n\u003cli\u003eSweep surplus onto adjacent areas. Do not leave puddles or unabsorbed liquid to dry on the floor.\u003c\/li\u003e\n\u003cli\u003eAt 20°C, touch dry is approximately four hours and light traffic can resume after twelve hours. If another coat is required, allow at least eight hours at 20°C or sixteen hours at 10°C.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eLimitations\u003c\/h3\u003e\u003cp\u003eDo not apply to painted, sealed, power floated or other non-porous surfaces: the product relies on penetration. Damp concrete reduces absorption and is unsuitable. Protect from rain and avoid washing for 24–48 hours after application. Condition stored material at 15–25°C for at least eight hours before use and prevent freezing. A dusty but structurally unsound floor still needs appropriate repair.\u003c\/p\u003e\u003ch3\u003eProduct FAQs\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWill it leave a coloured coating?\u003c\/strong\u003e\u003cbr\u003eNo. It is a clear penetrating dustproofer rather than a coloured floor paint. It can slightly darken some substrates.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it on power floated concrete?\u003c\/strong\u003e\u003cbr\u003eNo. Dense power floated, painted, sealed or non-porous surfaces prevent the penetration needed for this treatment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does a container cover?\u003c\/strong\u003e\u003cbr\u003eApproximately 30m² per 5L or 150m² per 25L. Very porous surfaces can absorb more material and need further coats.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen can the floor be used?\u003c\/strong\u003e\u003cbr\u003eAt 20°C, allow approximately twelve hours before light traffic. At 10°C allow twenty-four hours. Protect from rain and washing for 24–48 hours.\u003c\/p\u003e\u003ch3\u003eData Sheets\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-UK_TDS_Universal_Sealer_Dustproofer.pdf?v=1794397455\" target=\"_blank\" rel=\"noopener\"\u003eTechnical Data Sheet\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-Universal_Sealer_Dustproofer__GB_EN__6_00__18_06_2026.pdf?v=1794397455\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet (GB)\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-Universal_Sealer_Dustproofer__GBNI_EN__6_00__18_06_2026.pdf?v=1794397455\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet (GBNI)\u003c\/a\u003e\u003c\/p\u003e","brand":"Watco","offers":[{"title":"5L","offer_id":58279561199956,"sku":"UNISEAL05","price":84.6,"currency_code":"GBP","in_stock":true},{"title":"25L","offer_id":58279561232724,"sku":"UNISEAL25","price":343.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-uni-universal_sealer_dustproofer.jpg?v=1794397517","url":"https:\/\/andrewscoatings.co.uk\/products\/watco-universal-sealer-dustproofer","provider":"Andrews Coatings Ltd","version":"1.0","type":"link"}