{"product_id":"watco-floor-joint-sealant","title":"Watco Floor Joint Sealant","description":"\u003cp\u003eWatco Floor Joint Sealant is a pourable, two-part polyurea for sealing expansion joints, construction day joints and cracks in concrete floors. It provides a flexible joint with good compression and recovery, helping protect slab edges in regularly trafficked areas.\u003c\/p\u003e\u003cp\u003eUse it for joints up to 25mm wide in factory and warehouse floors, garages, car parks and forecourts. The mid-grey sealant suits indoor and outdoor work. Its wear and chemical resistance make it suitable for working floors where a correctly formed joint needs to accommodate movement.\u003c\/p\u003e\u003ch3\u003eSurface Preparation\u003c\/h3\u003e\u003cp\u003eRemove loose material and contamination and leave the joint sides clean and dry. Repair spalled concrete edges first with a suitable \u003ca href=\"\/products\/watco-concrex-carbon-fibre-epoxy-repair-mortar\"\u003eConcrex repair mortar\u003c\/a\u003e. Use back-up rod to reduce deeper joints to the required depth, and mask the adjoining floor if needed.\u003c\/p\u003e\u003cp\u003eJoint proportions matter. For widths of 5–10mm, depth should equal width. For widths of 10–20mm, use a 10mm depth. Above 20mm wide, make the depth half the width, within the maximum 25mm joint width.\u003c\/p\u003e\u003ch3\u003eTechnical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePack size is 2.5L. Colour is mid-grey.\u003c\/li\u003e\n\u003cli\u003eComposition is a two-part flexible polyurea sealant.\u003c\/li\u003e\n\u003cli\u003eNo primer is required for the specified clean concrete application.\u003c\/li\u003e\n\u003cli\u003eMinimum application temperature is 10°C.\u003c\/li\u003e\n\u003cli\u003eWorking life is approximately one hour at 20°C.\u003c\/li\u003e\n\u003cli\u003eSealed joints can accept traffic after approximately 8–12 hours. Full cure takes seven days.\u003c\/li\u003e\n\u003cli\u003ePublished guide coverage is approximately 12m at 15mm wide and 10mm deep.\u003c\/li\u003e\n\u003cli\u003eMovement accommodation is stated as +15% when sealed at the midpoint of joint movement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDirections for Use\u003c\/h3\u003e\u003cp\u003eAdd the smaller tin to the larger tin and mix thoroughly for approximately three minutes with a wide-bladed tool or suitable slow-speed paddle. Scrape the sides and bottom, then transfer the mix into a clean pouring container. Mix again for one minute to incorporate all the components.\u003c\/p\u003e\u003cp\u003ePour evenly into the prepared joint, keeping the surface just below the surrounding floor. If necessary, use a flat blade to release trapped air. Remove masking tape before the sealant sets, drawing it across the joint so surplus falls into the joint rather than onto the floor.\u003c\/p\u003e\u003ch3\u003eLimitations\u003c\/h3\u003e\u003cp\u003eKeep the pack at 15–25°C for at least eight hours before use and protect from freezing. Allow the stated cure period before opening the area to traffic and distinguish this from the seven-day full cure.\u003c\/p\u003e\u003cp\u003eWatco advises checking compatibility before using on plastics or bituminous surfaces. Follow the technical sheet for the joint profile and application conditions, and remove food products from the area during application and cure.\u003c\/p\u003e\u003ch3\u003eProduct FAQs\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat joint widths can it seal?\u003c\/strong\u003e\u003cbr\u003eUse it in concrete floor joints up to 25mm wide. Choose the depth according to the width guidance in the technical sheet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a primer?\u003c\/strong\u003e\u003cbr\u003eNo primer is required on the specified clean, dry concrete substrate. Repair loose or spalled joint edges before sealing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen can the floor return to use?\u003c\/strong\u003e\u003cbr\u003eSealed joints can accept traffic after approximately 8–12 hours. Full cure takes seven days. Follow the technical sheet for site conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I pour straight from the mixing tin?\u003c\/strong\u003e\u003cbr\u003eWatco recommends transferring the mixed components into a clean pouring container and mixing again for one minute before filling the joint.\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-joints-11nov-sheet-15.pdf?v=1794395437\" 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-joints-11nov-sheet-11.pdf?v=1794395437\" 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-joints-11nov-sheet-12.pdf?v=1794395437\" 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-joints-11nov-sheet-13.pdf?v=1794395437\" 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-joints-11nov-sheet-14.pdf?v=1794395437\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet – Resin (GBNI)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Watco","offers":[{"title":"2.5L","offer_id":58277879644500,"sku":"FJSX1","price":93.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/9017\/6596\/files\/watco-joints-jointseal-1.jpg?v=1794395491","url":"https:\/\/andrewscoatings.co.uk\/products\/watco-floor-joint-sealant","provider":"Andrews Coatings Ltd","version":"1.0","type":"link"}