{"product_id":"sika-everbuild-aquaseal-liquid-roof-7-21kg-two-coat-polyurethane-based-waterproofing","title":"Sika Everbuild Aquaseal Liquid Roof - 7\/21kg - Two-Coat Polyurethane-Based Waterproofing","description":"\u003ch3\u003eFast-Curing, Seamless Waterproofing Membrane for Flat \u0026amp; Pitched Roofs\u003c\/h3\u003e\n\u003cp\u003eSika Everbuild Aquaseal Liquid Roof is a high-performance, moisture-triggered, polyurethane-based waterproofing membrane. Designed for both new roofs and refurbishment projects, it provides instant waterproofing even in damp conditions. Its fast-curing formulation allows application in changing weather, forming a seamless, elastic membrane that adheres to most common substrates. Ideal for long-lasting protection of flat and pitched roofs, balconies, and detailing work.\u003c\/p\u003e\n\u003ch4\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Curing:\u003c\/strong\u003e Rain-resistant in just 10 minutes after application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture Activated:\u003c\/strong\u003e Cures using atmospheric moisture without need for catalysts or accelerators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible \u0026amp; Seamless:\u003c\/strong\u003e Forms a fully bonded, joint-free membrane that accommodates structural movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e Suitable for use on concrete, bitumen, asphalt, felt, metal, tiles, timber, and more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV \u0026amp; Weather Resistant:\u003c\/strong\u003e Long-term protection against environmental exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforceable:\u003c\/strong\u003e Can be reinforced with fleece where additional strength is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Details\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Solvent-based, one-part liquid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase:\u003c\/strong\u003e Polyurethane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Grey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDensity:\u003c\/strong\u003e Approx. 1.42 kg\/L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Content:\u003c\/strong\u003e Approx. 80%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes Available:\u003c\/strong\u003e 7kg and 21kg tins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e Approx. 0.7kg\/m² per coat (2 coats recommended)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Temperature:\u003c\/strong\u003e +5°C and rising\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrying Time:\u003c\/strong\u003e Rainproof in 10 minutes; fully cured in 24 hours (temperature dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Performance\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e ~4.5 N\/mm² (unreinforced)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElongation at Break:\u003c\/strong\u003e ~180% (unreinforced), ~50% (reinforced)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Vapour Diffusion (Sd):\u003c\/strong\u003e 3.47m\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Fire Performance:\u003c\/strong\u003e BROOF(t1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReaction to Fire:\u003c\/strong\u003e Euroclass E\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance to Wind Loads:\u003c\/strong\u003e \u0026gt;50 kPa\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eApplication Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Prep:\u003c\/strong\u003e Ensure the substrate is clean, dry (or damp, but not wet), and free from contaminants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePriming:\u003c\/strong\u003e May be required on porous or complex surfaces – refer to manufacturer guidance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply First Coat:\u003c\/strong\u003e Use brush or roller to apply at approx. 1kg\/m². Reinforce with fleece where necessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecond Coat:\u003c\/strong\u003e Once touch dry, apply second coat to achieve full waterproof protection.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eLimitations\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNot suitable for permanent water immersion.\u003c\/li\u003e\n\u003cli\u003eDo not apply during rain or when rain is expected within curing time.\u003c\/li\u003e\n\u003cli\u003eUse reinforcement fleece over bitumen, asphalt, and felt substrates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHealth \u0026amp; Safety\u003c\/h4\u003e\n\u003cp\u003eContains isocyanates. Flammable liquid and vapour. May cause allergic skin reactions and respiratory irritation. Always use appropriate PPE, including gloves and eye protection. Refer to the product Safety Data Sheet (SDS) for detailed safety guidance.\u003c\/p\u003e","brand":"DIY Refurb","offers":[{"title":"7kg","offer_id":62002184094083,"sku":"881237","price":58.86,"currency_code":"GBP","in_stock":true},{"title":"21kg","offer_id":62002184126851,"sku":"881238","price":157.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0222\/7290\/1216\/files\/Liquid-Roof.png?v=1784111631","url":"https:\/\/build4less.co.uk\/products\/sika-everbuild-aquaseal-liquid-roof-7-21kg-two-coat-polyurethane-based-waterproofing","provider":"Build4less","version":"1.0","type":"link"}