{"product_id":"8mm-deck-wall-drainage-membrane","title":"UGR 8mm Deck \u0026 Wall Drainage Membrane","description":"\u003ch6\u003eDescription\u003c\/h6\u003e\n\u003ch3\u003eReliable drainage for extensive green roofs\u003c\/h3\u003e\n\u003cp\u003eUGR 8mm Deck \u0026amp; Wall Drainage Membrane is a tough, high-strength drainage layer designed to help excess water move safely through a green roof system.\u003c\/p\u003e\n\u003cp\u003eIts 8mm studded recycled HDPE profile creates a clear drainage cavity above the primary waterproofing. A high-quality polypropylene geotextile is permanently bonded to the upper face, filtering soil fines and growing medium while allowing water to drain freely.\u003c\/p\u003e\n\u003cp\u003eThis combined drainage and filtration design saves installation time because there is no need to lay a separate loose filter fabric directly above the membrane.\u003c\/p\u003e\n\u003ch3\u003eBonded geotextile for easier installation\u003c\/h3\u003e\n\u003cp\u003eThe integrated geotextile performs several useful functions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHelps stop soil and substrate fines blocking the drainage cavity\u003c\/li\u003e\n\u003cli\u003eAllows water to flow through quickly\u003c\/li\u003e\n\u003cli\u003ePrevents the filter fabric from slipping during installation\u003c\/li\u003e\n\u003cli\u003eReduces compression of the fabric into the studded profile\u003c\/li\u003e\n\u003cli\u003eRemoves the need for a separate loose filter layer\u003c\/li\u003e\n\u003cli\u003eHelps keep the green roof build-up stable and correctly layered\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith a drainage capacity of approximately 2.24l\/(s·m), UGR 8mm Deck \u0026amp; Wall Drainage Membrane provides effective water movement without adding a dedicated water-storage layer.\u003c\/p\u003e\n\u003ch3\u003eSuitable applications\u003c\/h3\u003e\n\u003cp\u003eUGR 8mm Membrane can be used within:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtensive green roofs\u003c\/li\u003e\n\u003cli\u003eFlat roofs and low-pitched roofs\u003c\/li\u003e\n\u003cli\u003eHouses and residential extensions\u003c\/li\u003e\n\u003cli\u003eSheds, garages and garden buildings\u003c\/li\u003e\n\u003cli\u003eConservatories\u003c\/li\u003e\n\u003cli\u003eLarger commercial roof projects\u003c\/li\u003e\n\u003cli\u003eSelected intensive green roof build-ups\u003c\/li\u003e\n\u003cli\u003eWalkable landscaping areas\u003c\/li\u003e\n\u003cli\u003eDrivable landscaping systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts approximate compressive strength of 250kN\/m² makes it suitable for build-ups where green roof planting and trafficable surfaces may be combined, provided that the full system is correctly designed for the anticipated loads.\u003c\/p\u003e\n\u003ch3\u003eAvailable sizes\u003c\/h3\u003e\n\u003cp\u003eChoose from two roll sizes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2m x 10m: covers 20m²\u003c\/li\u003e\n\u003cli\u003e2m x 20m: covers 40m²\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 20m² version may be more manageable for smaller roofs, DIY installations or sites with restricted access. The 40m² version reduces the number of roll changes and adjoining sections on larger areas.\u003c\/p\u003e\n\u003ch3\u003eStrong, durable and long-lasting\u003c\/h3\u003e\n\u003cp\u003eUGR 8mm Deck \u0026amp; Wall Drainage Membrane is designed to provide reliable performance throughout the life of the green roof system. The membrane is:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResistant to water\u003c\/li\u003e\n\u003cli\u003eResistant to alkalis and saline solutions\u003c\/li\u003e\n\u003cli\u003eResistant to organic acids\u003c\/li\u003e\n\u003cli\u003eUnaffected by minerals\u003c\/li\u003e\n\u003cli\u003eResistant to bacteria, fungi and other small organisms\u003c\/li\u003e\n\u003cli\u003eChemically resistant\u003c\/li\u003e\n\u003cli\u003eSuitable for temperatures between -30°C and +80°C\u003c\/li\u003e\n\u003cli\u003eGuaranteed against deterioration for 30 years\u003c\/li\u003e\n\u003cli\u003eTested and CE marked to the relevant standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere UGR 8mm Membrane fits in the system\u003c\/h3\u003e\n\u003cp\u003eA typical extensive green roof build-up may include:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eStructural roof deck\u003c\/li\u003e\n\u003cli\u003ePrimary waterproofing layer\u003c\/li\u003e\n\u003cli\u003eRoot barrier, where required\u003c\/li\u003e\n\u003cli\u003eProtection fleece, where required\u003c\/li\u003e\n\u003cli\u003eUGR 8mm Deck \u0026amp; Wall Drainage Membrane\u003c\/li\u003e\n\u003cli\u003eBonded geotextile filter layer\u003c\/li\u003e\n\u003cli\u003eExtensive green roof substrate\u003c\/li\u003e\n\u003cli\u003eSedum, grasses, mosses or other suitable planting\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFor dedicated root protection, install the \u003ca href=\"\/products\/green-roof-root-barrier\"\u003eUGR Green Roof Root Barrier\u003c\/a\u003e beneath the drainage membrane. A protective fleece can also help reduce the risk of light mechanical damage to the waterproofing and root barrier — see the \u003ca href=\"\/products\/green-roof-protection-fleece-300\"\u003eUGR Green Roof Protection Fleece 300\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstalling UGR 8mm Membrane\u003c\/h3\u003e\n\u003cp\u003eThe application surface should have a gradient of at least 2%. Complete the horizontal waterproofing and install any specified root barrier or protection fleece before laying the membrane.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eRoll UGR 8mm Deck \u0026amp; Wall Drainage Membrane out over the prepared surface with the bonded geotextile facing upwards.\u003c\/li\u003e\n\u003cli\u003eCut the dimpled membrane to the required length, taking care not to damage the waterproofing or other layers beneath.\u003c\/li\u003e\n\u003cli\u003eOverlap adjoining rolls by approximately 100mm.\u003c\/li\u003e\n\u003cli\u003eLift the loose geotextile edge and position it over the adjoining section.\u003c\/li\u003e\n\u003cli\u003eWhere additional joint protection is required, seal the connection using a compatible jointing tape or sealant.\u003c\/li\u003e\n\u003cli\u003eOnce installed, the membrane can immediately receive the specified extensive green roof substrate or compatible paving build-up.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe bonded geotextile remains on the upper face beneath green roof substrate.\u003c\/p\u003e\n\u003ch3\u003eWalkable and drivable applications\u003c\/h3\u003e\n\u003cp\u003eUGR 8mm Membrane can also form part of compatible walkable and drivable landscaping systems.\u003c\/p\u003e\n\u003cp\u003eFor walkable areas, a suitable bedding course of sand, gravel or chippings is installed between the membrane and the finished paving.\u003c\/p\u003e\n\u003cp\u003eDrivable applications require a properly specified sub-base and bedding course between UGR 8mm Membrane and the finished pavement. Structural loading, drainage and the complete system build-up must be designed for the intended traffic.\u003c\/p\u003e\n\u003ch3\u003eImportant suitability note\u003c\/h3\u003e\n\u003cp\u003eUGR 8mm Deck \u0026amp; Wall Drainage Membrane is not suitable for inverted warm roof applications. For an inverted warm roof or a project requiring meaningful water storage as well as drainage, consider the \u003ca href=\"\/products\/20mm-storage-drainage-membrane-2m-x-10m\"\u003eUGR 20mm\u003c\/a\u003e or \u003ca href=\"\/products\/25mm-storage-drainage-membrane\"\u003eUGR 25mm\u003c\/a\u003e Storage \u0026amp; Drainage Membranes.\u003c\/p\u003e\n\u003cp\u003eUGR 8mm Membrane is also not a primary waterproofing membrane and must be installed above a suitable waterproofing system.\u003c\/p\u003e\n\u003ch6\u003eSpecifications\u003c\/h6\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eRecycled HDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eGeotextile\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003ePolypropylene, approx. 100g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eMembrane weight\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eApprox. 550g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eTotal weight\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eApprox. 650g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eStud height\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eApprox. 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eNumber of studs\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e1,710\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eColour\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eRoll width\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e2m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eRoll lengths\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e10m or 20m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eCoverage\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e20m² or 40m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eCompressive strength\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eApprox. 250kN\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eWater-drainage capacity\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eApprox. 2.24l\/(s·m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eTemperature resistance\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e-30°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eFire resistance\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eClass E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003eAccreditation\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003eTested and CE marked\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch6\u003eFAQs\u003c\/h6\u003e\n\u003ch4\u003eDoes UGR 8mm Membrane store water?\u003c\/h4\u003e\n\u003cp\u003eIt primarily provides drainage and filtration rather than dedicated storage. For water retention, consider UGR 20mm or UGR 25mm Storage \u0026amp; Drainage Membrane.\u003c\/p\u003e\n\u003ch4\u003eDoes it need a separate filter fabric?\u003c\/h4\u003e\n\u003cp\u003eNo. A polypropylene geotextile is permanently bonded to its upper surface.\u003c\/p\u003e\n\u003ch4\u003eWhich way up should the membrane be installed?\u003c\/h4\u003e\n\u003cp\u003eBonded geotextile facing upwards towards the substrate or landscaping build-up.\u003c\/p\u003e\n\u003ch4\u003eCan UGR 8mm Membrane be used on an inverted warm roof?\u003c\/h4\u003e\n\u003cp\u003eNo. UGR 20mm or UGR 25mm Storage \u0026amp; Drainage Membrane may be more appropriate, subject to the overall specification.\u003c\/p\u003e\n\u003ch6\u003eHelp\u003c\/h6\u003e\n\u003ch3\u003eNeed help selecting the right drainage membrane?\u003c\/h3\u003e\n\u003cp\u003eUnsure whether your project needs straightforward drainage or a membrane that also stores water for the vegetation? Our in-house technical team can provide free, practical advice on choosing between UGR 8mm Membrane and the higher-capacity drainage and storage membranes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmail:\u003c\/strong\u003e \u003ca href=\"mailto:info@urbangreenroofs.com\" title=\"mailto:info@urbangreenroofs.com\"\u003einfo@urbangreenroofs.com\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTelephone:\u003c\/strong\u003e \u003ca href=\"tel:+44%20117%20370%204018\" title=\"tel:+44 117 370 4018\"\u003e+44 117 370 4018\u003c\/a\u003e\u003c\/p\u003e","brand":"Urban Green Roofs","offers":[{"title":"2m x 10m (20m²)","offer_id":54207510544727,"sku":"UGR8DWDM20","price":143.25,"currency_code":"GBP","in_stock":true},{"title":"2m x 20m (40m²)","offer_id":54207510577495,"sku":"UGR8DWDM40","price":243.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/0150\/9207\/files\/PermaSEAL_PRO_8_Main_Image_1000_x_1000.jpg?v=1788432256","url":"https:\/\/urbangreenroofs.com\/products\/8mm-deck-wall-drainage-membrane","provider":"Urban Green Roofs","version":"1.0","type":"link"}