{"product_id":"premium-liquid-tanking-biokil-crown","title":"Premium Liquid Tanking - Biokil Crown","description":"\u003ch3\u003eFlexible Liquid-Applied Waterproof Membrane for Internal Tanking Applications\u003c\/h3\u003e\n\u003cp\u003eBiokil Crown Premium Liquid Tanking is a high-performance, single-component, liquid-applied waterproofing membrane designed for use in internal tanking and damp-proofing systems. It forms a seamless, highly elastic barrier that prevents water ingress in below-ground structures such as basements, lift pits, and retaining walls. Applied by brush, roller, or spray, the membrane cures to form a tough, flexible coating suitable for concrete, masonry, blockwork, and render surfaces.\u003c\/p\u003e\n\u003ch4\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Protection:\u003c\/strong\u003e Forms a continuous, joint-free waterproof membrane with excellent flexibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Elastic:\u003c\/strong\u003e Accommodates minor substrate movement and bridges hairline cracks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Application:\u003c\/strong\u003e Ready-to-use formula for brush, roller, or spray application — no mixing required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Use:\u003c\/strong\u003e Suitable for internal tanking in basements, cellars, lift shafts, and retaining structures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow VOC \u0026amp; Solvent-Free:\u003c\/strong\u003e Safe for use in enclosed spaces with minimal odour and environmental impact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Details\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Liquid-applied waterproofing membrane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Single-component, ready to use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Grey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e Approx. 1.5–2.0 kg\/m² per coat (depending on substrate and application thickness)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Method:\u003c\/strong\u003e Brush, roller, or airless spray\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrying Time:\u003c\/strong\u003e Touch dry in 2–4 hours; full cure in 24–48 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Size:\u003c\/strong\u003e 20kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePerformance \u0026amp; Technical Details\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasion Resistance:\u003c\/strong\u003e Not suitable as a final surface finish on floors subject to foot or vehicle traffic. Protect with a suitable floor covering such as Mapei Latexplan, tiles, carpet, or linoleum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePositive Water Pressure Resistance:\u003c\/strong\u003e Resists pressure equivalent to a 20-metre head of water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNegative Water Pressure Resistance:\u003c\/strong\u003e When applied in basements, the membrane should be overcoated with a render — Biokil Crown Renovating Render is recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Vapour Permeability:\u003c\/strong\u003e Less than 4g\/m²\/24h at 25ºC \/ 75% RH (to BS 3177, Payne Cups, 0.6mm dry film thickness).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon Dioxide Resistance:\u003c\/strong\u003e A 0.6mm dry film offers resistance equivalent to 100 metres of still air, exceeding the 50-metre requirement for anti-carbonation coatings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethane Resistance:\u003c\/strong\u003e RAPRA report CT 26076 shows a permeability of 79 mL\/m²\/day under 1 bar partial pressure — approximately 10 times more resistant than low-density polyethylene film.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eApplication Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare Surface:\u003c\/strong\u003e Ensure the substrate is clean, stable, and free from oil, dust, or contaminants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime if Required:\u003c\/strong\u003e Apply a compatible primer to porous surfaces for better adhesion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst Coat:\u003c\/strong\u003e Apply a consistent layer using a brush, roller, or airless spray.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecond Coat:\u003c\/strong\u003e Apply a second coat once the first is dry (typically after 2–4 hours), in a perpendicular direction for best coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuring:\u003c\/strong\u003e Allow 24–48 hours for full cure before backfilling, overcoating, or applying final finishes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eLimitations\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNot suitable for surfaces with active water ingress without proper drainage provision.\u003c\/li\u003e\n\u003cli\u003eDo not apply at temperatures below 5°C or onto wet, frozen, or contaminated surfaces.\u003c\/li\u003e\n\u003cli\u003eNot designed for external applications unless fully protected from UV exposure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHealth \u0026amp; Safety\u003c\/h4\u003e\n\u003cp\u003eAlways wear suitable PPE during use, including gloves and eye protection. Avoid inhalation of vapours and contact with skin or eyes. Refer to the Safety Data Sheet (SDS) for comprehensive guidance.\u003c\/p\u003e","brand":"DIY Refurb","offers":[{"title":"5 Litre","offer_id":56839340720393,"sku":"1108","price":46.8,"currency_code":"GBP","in_stock":false},{"title":"10 Litre","offer_id":56839340753161,"sku":"1101","price":94.8,"currency_code":"GBP","in_stock":false},{"title":"20 Litre","offer_id":56839340785929,"sku":"1100","price":166.8,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/4040\/2697\/files\/Premium-Liquid-Tanking-RTU-Pic.webp?v=1771854528","url":"https:\/\/instock.net\/products\/premium-liquid-tanking-biokil-crown","provider":"InStock","version":"1.0","type":"link"}