{"product_id":"watco-concrex-acid-strength","title":"Watco Concrex Acid Strength","description":"\u003cp\u003eWatco Concrex Acid Strength is a two-part epoxy repair mortar for acid-damaged concrete floors, ramps and steps. It is intended for working areas where strong chemicals are handled or stored, and where a patch needs to cope with both traffic and chemical exposure.\u003c\/p\u003e\u003cp\u003eThe mortar is trowelled into local damage and can be feathered around the perimeter. Once cured, it leaves a hard, non-dusting repair. Watco’s resistance table covers a range of acids, including sulphuric acid at 95% concentration. Check the table for the chemical, concentration and exposure period before specifying the repair.\u003c\/p\u003e\u003ch3\u003eSurface Preparation\u003c\/h3\u003e\u003cp\u003eRemove loose concrete, dust, grease and other contamination. Brush or sweep the sides and base of the defect until you reach a sound surface. Rough, dry patch repairs usually need no primer. Use \u003ca href=\"\/products\/watco-tack-coat\"\u003eWatco Tack Coat\u003c\/a\u003e for thin screeds and smooth, non-porous or metal surfaces. Watco also specifies Tack Coat where the substrate is damp.\u003c\/p\u003e\u003ch3\u003eTechnical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCoverage is approximately 1.2m² per 10kg at 5mm thick.\u003c\/li\u003e\n\u003cli\u003eNormal repair depth is 5–50mm. Feather the edge where most of the repair is at least 5mm thick.\u003c\/li\u003e\n\u003cli\u003eMinimum application temperature is 10°C.\u003c\/li\u003e\n\u003cli\u003eWorking life is about 60 minutes at 15°C.\u003c\/li\u003e\n\u003cli\u003eAllow 6 hours for light traffic at 20°C or 8 hours at 15°C. Allow at least 16 hours for heavy traffic at 15–20°C.\u003c\/li\u003e\n\u003cli\u003eAllow 7 days to reach full chemical resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDirections for Use\u003c\/h3\u003e\u003cp\u003eRead the pack instructions and safety sheets before mixing. Tip the resin and aggregate blend onto a clean mixing board or tray. Add the curing agent and work it through the aggregate until the mortar has an even colour and texture. For part packs, follow Watco’s proportions and use whole curing agent containers.\u003c\/p\u003e\u003cp\u003eCompact the mortar into the defect with a steel trowel and finish it flush with the adjacent surface. For a repair deeper than 50mm, apply in layers and allow 6–8 hours between layers. Clean tools before the mortar sets.\u003c\/p\u003e\u003ch3\u003eLimitations\u003c\/h3\u003e\u003cp\u003eRemove food products during application and cure. Keep the finished repair below the manufacturer’s 60°C maximum and avoid steam cleaning. The traffic times and chemical resistance times are separate. Schedule chemical exposure around the seven-day cure.\u003c\/p\u003e\u003ch3\u003eProduct FAQs\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWill it resist sulphuric acid?\u003c\/strong\u003e\u003cbr\u003eWatco rates resistance to 95% sulphuric acid as excellent in its published tests up to 28 days. Check the technical sheet for your exposure conditions and allow seven days for full chemical resistance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen can the floor reopen?\u003c\/strong\u003e\u003cbr\u003eAllow 6 hours for light traffic at 20°C or 8 hours at 15°C. At 15–20°C, allow at least 16 hours before heavy traffic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a primer?\u003c\/strong\u003e\u003cbr\u003eRough, dry patches usually need none. Use Tack Coat for smooth, non-porous, metal or damp surfaces and thin screeds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much will a pack cover?\u003c\/strong\u003e\u003cbr\u003eAbout 1.2m² per 10kg at 5mm. Deeper holes require more material.\u003c\/p\u003e\u003ch3\u003eData Sheets\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-concrex-acid-sheet-5.pdf?v=1794326352\" target=\"_blank\" rel=\"noopener\"\u003eTechnical Data Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-concrex-acid-sheet-1.pdf?v=1794326352\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet – Curing Agent (GB)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-concrex-acid-sheet-2.pdf?v=1794326352\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet – Resin (GB)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-concrex-acid-sheet-3.pdf?v=1794326351\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet – Curing Agent (GBNI)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-concrex-acid-sheet-4.pdf?v=1794326351\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet – Resin (GBNI)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Watco","offers":[{"title":"10kg","offer_id":58249778102612,"sku":"CXAS10","price":156.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-concrex-acid-1.jpg?v=1794326359","url":"https:\/\/andrewscoatings.co.uk\/products\/watco-concrex-acid-strength","provider":"Andrews Coatings Ltd","version":"1.0","type":"link"}