{"product_id":"riw-heviseal","title":"RIW Heviseal","description":"\u003ch2 dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003eRIW Heviseal – 20L\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eRIW Heviseal is a \u003cstrong\u003ecold-applied, heavy-bodied bituminous damp proof membrane\u003c\/strong\u003e formulated from natural and petroleum bitumens with fibre and mineral fillers in white spirit. It cures to a uniform black finish and provides a durable barrier against both water and water vapour. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eSuitable for use on \u003cstrong\u003econcrete, masonry and steel\u003c\/strong\u003e, Heviseal is designed for a wide range of waterproofing, tanking and protective coating applications, including basements, sub-structures, flat roofs, gutters, parapet walls, planters, ponds and water storage tanks.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/RIWHeviseal.jpg?v=1789477827\" alt=\"RIW Heviseal 20L bituminous damp proof membrane\"\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCold-applied damp proof membrane\u003c\/li\u003e\n\u003cli\u003eProvides a barrier against water and water vapour\u003c\/li\u003e\n\u003cli\u003eUV resistant\u003c\/li\u003e\n\u003cli\u003eTough yet flexible with \u003cstrong\u003e100% elongation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasily applied by stiff brush or medium-pile roller\u003c\/li\u003e\n\u003cli\u003eCan be adapted around difficult details\u003c\/li\u003e\n\u003cli\u003eCannot be leached or washed away\u003c\/li\u003e\n\u003cli\u003eRemains undamaged by frost after application\u003c\/li\u003e\n\u003cli\u003eGood resistance to UV exposure\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e50,000 ppm sulphate resistance\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eSuitable for concrete, masonry and steel\u003c\/li\u003e\n\u003cli\u003eSuitable for exposed applications and applications where the membrane will subsequently be covered \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eApplications\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eRIW Heviseal can be used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBasement waterproofing and sub-structures\u003c\/li\u003e\n\u003cli\u003eAbove-ground superstructures\u003c\/li\u003e\n\u003cli\u003eRetaining walls\u003c\/li\u003e\n\u003cli\u003eFlat roof waterproofing and refurbishment\u003c\/li\u003e\n\u003cli\u003eGutters and gutter repairs\u003c\/li\u003e\n\u003cli\u003eParapet walls and plinths\u003c\/li\u003e\n\u003cli\u003ePlanters\u003c\/li\u003e\n\u003cli\u003ePonds and pond lining\u003c\/li\u003e\n\u003cli\u003eWater storage tanks\u003c\/li\u003e\n\u003cli\u003eProtective coating for concrete and steel structures\u003c\/li\u003e\n\u003cli\u003eTemporary waterproof membranes on new or existing flat roofs \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eTechnical Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Fibre and mineral-filled bitumen solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecific gravity:\u003c\/strong\u003e 0.95 g\/ml\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolids content:\u003c\/strong\u003e 70% w\/w\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlash point:\u003c\/strong\u003e 39°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater vapour resistance:\u003c\/strong\u003e 590 MN s\/g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater vapour permeability:\u003c\/strong\u003e 0.43 g\/m² per 24 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e 1.5 m² per litre per coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of coats:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry film thickness:\u003c\/strong\u003e 1mm for two coats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuring time:\u003c\/strong\u003e Touch dry in approximately 24 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvercoating:\u003c\/strong\u003e Minimum when touch dry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElongation:\u003c\/strong\u003e 100%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulphate resistance:\u003c\/strong\u003e 50,000 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV resistance:\u003c\/strong\u003e Good, minimum 5–7 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e 12 months in a temperate climate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e 20 litre container \u003cspan class=\"contents\"\u003e\u003c\/span\u003e \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eApplication \u0026amp; Preparation\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eSurfaces should be \u003cstrong\u003esmooth, clean, dry to a depth of 1–2mm, sound and free from frost, oil, grease, condensation and other contamination\u003c\/strong\u003e. Voids and hollows should be repaired before application, while sharp edges and high points should be removed. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eHeviseal should be applied at temperatures of \u003cstrong\u003e5°C or above\u003c\/strong\u003e. Apply \u003cstrong\u003etwo coats at a minimum rate of 1.5m² per litre per coat\u003c\/strong\u003e. The product should be thoroughly stirred to ensure even distribution of the fibres. It can be applied using a stiff brush or medium-pile roller and should not be allowed to pool in depressions. Good ventilation is required for proper curing. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eFor metal substrates, surfaces should be wire brushed or sand blasted and pre-treated with a suitable steel primer. Heviseal is compatible with commonly encountered steel primers, including alkyd, chlorinated rubber and epoxy-based primers. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat is RIW Heviseal used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eRIW Heviseal is a heavy-bodied bituminous damp proof membrane used to provide water and water vapour protection to applications including basements, flat roofs, gutters, retaining walls, planters, ponds and water storage tanks. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eHow many coats of RIW Heviseal are required?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe technical data specifies \u003cstrong\u003etwo coats\u003c\/strong\u003e, applied at a minimum coverage rate of 1.5m² per litre per coat. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat coverage does RIW Heviseal provide?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe theoretical coverage is \u003cstrong\u003e1.5m² per litre per coat\u003c\/strong\u003e. Actual coverage may vary depending on the nature and condition of the substrate. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eCan Heviseal be used on damp surfaces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe technical datasheet specifies that surfaces should be clean and dry to a depth of 1–2mm before application. Therefore, the substrate preparation requirements should be followed rather than applying the product to a wet surface. \u003cspan class=\"contents\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eCan RIW Heviseal be used for pond lining?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eYes. Heviseal is suitable for pond lining. The datasheet specifies three coats at internal angles with 0.13mm bitumen-coated glassfibre fabric between the second and third coats for reinforcement. Once fully cured, the membrane must be washed down 2–3 times with water to remove remaining solvent traces.\u003c\/p\u003e\n\u003cp\u003eDownloads\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/aBr9jgKQPF9Ys3I7AKSSAIvIuVNerQmGWBkabYW8.pdf?v=1789477865\" title=\"RIW Heviseal Data Sheet\"\u003eData Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"RIW","offers":[{"title":"20L","offer_id":57457082827127,"sku":"HEVISEAL20L","price":289.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0321\/5320\/6920\/files\/RIWHeviseal.jpg?v=1789477827","url":"https:\/\/clevershieldcoatings.co.uk\/products\/riw-heviseal","provider":"Clever Shield - Asset Protection","version":"1.0","type":"link"}