{"product_id":"watco-sand-additive","title":"Watco Sand Additive","description":"\u003cp\u003eWatco Sand Additive is a dry silica additive for use with Roofite where a thicker repair consistency is needed. Mixing it into the compatible Roofite coating produces a trowellable compound for suitable larger cracks and local depressions.\u003c\/p\u003e\n\u003cp\u003eIt supports the Roofite repair system rather than acting as a separate coating. Use it where the manufacturer's instructions call for additional body, such as cracks wider than 3mm. For a ready-made repair compound, Watco Roofite Repair Mortar is a separate product with its own application and coverage guidance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDry silica additive supplied separately.\u003c\/li\u003e\n\u003cli\u003eIncreases the body of compatible Roofite.\u003c\/li\u003e\n\u003cli\u003eHelps create a trowellable repair mix.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSurface Preparation\u003c\/h3\u003e\u003cp\u003ePrepare the roof and repair according to the Roofite system instructions. The surface must be sound and free of loose material and contamination. The range sheet calls for priming deep pits and cracks with Roofite before placing the Roofite and additive mortar.\u003c\/p\u003e\u003ch3\u003eTechnical Data\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eDry silica sand additive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIntended use\u003c\/th\u003e\n\u003ctd\u003eWith Roofite for thicker repair applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication area\u003c\/th\u003e\n\u003ctd\u003eExterior roof repair system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eCoverage\u003c\/h3\u003e\u003cp\u003eThere is no single standalone spread rate. Material consumption depends on the Roofite mix and the dimensions of the repair. Follow the manufacturer's system guidance for the amount of additive rather than applying a coating coverage figure to the dry sand.\u003c\/p\u003e\u003ch3\u003eDirections for Use\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003ePrepare and prime the defect as specified for the Roofite repair.\u003c\/li\u003e\n\u003cli\u003eMix the additive with the compatible Roofite material to the manufacturer's specified repair consistency.\u003c\/li\u003e\n\u003cli\u003eTrowel the prepared mixture into the primed defect, following the system detail.\u003c\/li\u003e\n\u003cli\u003eAllow the complete Roofite repair to dry before further treatment or access.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eLimitations\u003c\/h3\u003e\u003cp\u003eThis additive is not a waterproof coating by itself. Do not use it to alter unrelated coatings without manufacturer approval, and do not assume that a stronger or drier mix will improve the repair. Follow the Roofite instructions and additive safety sheet, including controls for handling dry material.\u003c\/p\u003e\u003ch3\u003eProduct FAQs\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the additive do?\u003c\/strong\u003e\u003cbr\u003eIt gives compatible Roofite more body so it can form a trowellable repair compound.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it for larger cracks?\u003c\/strong\u003e\u003cbr\u003eThe product page specifies mixing with Roofite for cracks greater than 3mm, following the complete repair system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the sand on its own?\u003c\/strong\u003e\u003cbr\u003eNo. It is an additive for a specified Roofite repair mix, not a standalone waterproofing product.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it have a fixed coverage rate?\u003c\/strong\u003e\u003cbr\u003eNo. Consumption depends on the mix and repair dimensions; use the manufacturer's system guidance.\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-roof-batch-Roofite_Range_2026.pdf?v=1794401452\" target=\"_blank\" rel=\"noopener\"\u003eTechnical Data Sheet – Roofite System\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-roof-batch-roofite_additive_gb.pdf?v=1794401452\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet – Sand Additive (GB)\u003c\/a\u003e\u003c\/p\u003e","brand":"Watco","offers":[{"title":"5kg","offer_id":58282015162708,"sku":"ROOFA5","price":15.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-roof-batch-9-sand_additive.jpg?v=1794401471","url":"https:\/\/andrewscoatings.co.uk\/products\/watco-sand-additive","provider":"Andrews Coatings Ltd","version":"1.0","type":"link"}