{"product_id":"60mm-storage-drainage-board-1m-x-2m","title":"UGR 60mm Storage \u0026 Drainage Board 1m x 2m","description":"\u003ch6\u003eDescription\u003c\/h6\u003e\n\u003ch3\u003eMaximum water storage for intensive green roofs\u003c\/h3\u003e\n\u003cp\u003eUGR 60mm Storage \u0026amp; Drainage Board 1m x 2m is a high-capacity water-management layer for demanding intensive green roof and hard landscaping projects.\u003c\/p\u003e\n\u003cp\u003eIts deep 60mm cavities store approximately 20 litres of water per square metre, helping maintain moisture around deeper growing substrates and heavily planted areas between periods of rainfall.\u003c\/p\u003e\n\u003cp\u003eThe membrane is also perforated, allowing excess water to pass into the drainage space below. This balances useful water retention with effective drainage, helping prevent the substrate and plant roots from becoming saturated.\u003c\/p\u003e\n\u003ch3\u003eDesigned for larger planting and complex landscaping\u003c\/h3\u003e\n\u003cp\u003eUGR 60mm Storage \u0026amp; Drainage Boards are specifically designed for intensive green roofs supporting larger shrubs and trees. Its substantial storage capacity also makes it suitable for areas intended to remain without irrigation for extended periods. Typical applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntensive green roofs with large shrubs or trees\u003c\/li\u003e\n\u003cli\u003eHeavily planted commercial roof gardens\u003c\/li\u003e\n\u003cli\u003eResidential and commercial roofs\u003c\/li\u003e\n\u003cli\u003eChildren's playgrounds and recreational spaces\u003c\/li\u003e\n\u003cli\u003eBalconies and terraces\u003c\/li\u003e\n\u003cli\u003eInverted roofs\u003c\/li\u003e\n\u003cli\u003eLandscaped areas above underground car parks\u003c\/li\u003e\n\u003cli\u003eGround-level landscaping above basement accommodation\u003c\/li\u003e\n\u003cli\u003eWalkable decks\u003c\/li\u003e\n\u003cli\u003eDrivable decks\u003c\/li\u003e\n\u003cli\u003ePaving and slab build-ups\u003c\/li\u003e\n\u003cli\u003eOther hard landscaping designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe membrane's high drainage capacity makes it suitable for long drainage runs and low roof slopes within a correctly specified system.\u003c\/p\u003e\n\u003ch3\u003eStrong enough for demanding build-ups\u003c\/h3\u003e\n\u003cp\u003eManufactured from 100% recycled high-density polyethylene, UGR 60mm Storage \u0026amp; Drainage Boards have an approximate compressive strength of 200kN\/m² — equivalent to around 20 tonnes per square metre. This provides the strength needed to support suitable intensive planting and compatible trafficked or paved areas.\u003c\/p\u003e\n\u003cp\u003eUGR 60mm Boards are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtremely tough and durable\u003c\/li\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\u003eResistant to bacteria and fungi\u003c\/li\u003e\n\u003cli\u003eUnaffected by minerals\u003c\/li\u003e\n\u003cli\u003eSuitable for temperatures from -30°C to +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\u003eManaging water within an intensive green roof\u003c\/h3\u003e\n\u003cp\u003eUGR 60mm Storage \u0026amp; Drainage Boards perform two essential functions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater storage:\u003c\/strong\u003e Its 60mm cavities retain approximately 20l\/m² to support intensive planting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrainage:\u003c\/strong\u003e Perforations allow excess rainfall to pass into the drainage space beneath.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen the membrane is used beneath planting substrate, a separate geotextile filter layer must be installed above it. This prevents soil and fine particles from entering and obstructing the storage cavities. Use the \u003ca href=\"\/products\/120g-green-roof-filter-layer-1-5m-x-100m\"\u003eUGR 120g Green Roof Filter Layer 1.5m x 100m\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhere UGR 60mm Storage \u0026amp; Drainage Boards fit in the system\u003c\/h3\u003e\n\u003cp\u003eA typical intensive 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\u003c\/li\u003e\n\u003cli\u003eProtection fleece\u003c\/li\u003e\n\u003cli\u003eUGR 60mm Storage \u0026amp; Drainage Boards\u003c\/li\u003e\n\u003cli\u003eSeparate geotextile filter layer\u003c\/li\u003e\n\u003cli\u003eIntensive green roof substrate\u003c\/li\u003e\n\u003cli\u003eShrubs, trees or other 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 protection fleece may also be required to help protect the waterproofing and root barrier against light mechanical damage — 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 60mm Boards\u003c\/h3\u003e\n\u003cp\u003eThe application surface should have a gradient of at least 2%. Complete the horizontal waterproofing, root barrier and any other specified underlying layers before positioning the membrane.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eLay the 1m x 2m slabs horizontally with the cavity openings facing upwards.\u003c\/li\u003e\n\u003cli\u003ePosition adjoining slabs edge to edge using simple butt joints.\u003c\/li\u003e\n\u003cli\u003eOverlapping is not normally required, although it can be used where necessary.\u003c\/li\u003e\n\u003cli\u003eCut slabs to the required shape with a suitable knife, taking care not to damage the waterproofing or other underlying layers.\u003c\/li\u003e\n\u003cli\u003eFor planted applications, install UGR 120g Green Roof Filter Layer across the completed surface.\u003c\/li\u003e\n\u003cli\u003eApply the specified intensive green roof substrate above the filter layer.\u003c\/li\u003e\n\u003cli\u003eComplete the system with the chosen planting.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe manageable slab format allows individual sections to be positioned and cut without handling a large roll.\u003c\/p\u003e\n\u003ch3\u003eWalkable and drivable applications\u003c\/h3\u003e\n\u003cp\u003eFor walkable areas without vegetation, a geotextile filter layer is not required. The specified base and bedding materials are applied directly onto the membrane and into its cavities before paving or slabs are installed.\u003c\/p\u003e\n\u003cp\u003eDrivable applications require a suitable sub-base and bedding course between UGR 60mm Storage \u0026amp; Drainage Boards and the finished pavement. The complete build-up, drainage and structural loading must be designed for the intended traffic and use.\u003c\/p\u003e\n\u003ch3\u003eImportant suitability note\u003c\/h3\u003e\n\u003cp\u003eUGR 60mm Boards are intended for high-capacity intensive planting and demanding landscaping projects. Where the roof does not require 20l\/m² of water storage or support large shrubs and trees, the shallower \u003ca href=\"\/products\/40mm-storage-drainage-board-1m-x-2m\"\u003eUGR 40mm Storage \u0026amp; Drainage Board 1m x 2m\u003c\/a\u003e may provide a more appropriate solution.\u003c\/p\u003e\n\u003cp\u003eUGR 60mm Storage \u0026amp; Drainage Boards are not a primary waterproofing system 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;\"\u003e Material\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e 100% recycled 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;\"\u003e Stud height\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Approx. 60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003e Membrane weight\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Approx. 2,500g\/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;\"\u003e Number of studs\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e 130\/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;\"\u003e Colour\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003e Slab dimensions\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e 1m x 2m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003e Coverage\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e 2m² per slab\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0; vertical-align: top;\"\u003e Compressive strength\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Approx. 200kN\/m² (~20 tonnes\/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;\"\u003e Water-storage capacity\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Approx. 20l\/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;\"\u003e Water-drainage capacity (i=0.10)\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Approx. 3.86l\/(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;\"\u003e Temperature 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;\"\u003e Fire resistance\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Class 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;\"\u003e Accreditation\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0;\"\u003e Tested 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\u003eHow much water do UGR 60mm Boards store?\u003c\/h4\u003e\n\u003cp\u003eIts 60mm cavities store approximately 20 litres per square metre, suiting deeper substrates and larger planting.\u003c\/p\u003e\n\u003ch4\u003eDo UGR 60mm Boards include a filter layer?\u003c\/h4\u003e\n\u003cp\u003eNo. A separate geotextile filter layer must be installed above it when used beneath substrate.\u003c\/p\u003e\n\u003ch4\u003eWhat is the difference between UGR 40mm Boards and UGR 60mm Boards?\u003c\/h4\u003e\n\u003cp\u003eUGR 60mm Storage \u0026amp; Drainage Boards have deeper 60mm cavities storing ~20l\/m², versus ~15l\/m² for the 40mm UGR Boards. It suits particularly demanding intensive roofs with large shrubs and trees.\u003c\/p\u003e\n\u003ch4\u003eCan UGR 60mm Boards be used beneath paving?\u003c\/h4\u003e\n\u003cp\u003eYes, in compatible walkable or drivable systems. The cavities must receive the specified base\/bedding and the system be designed for the loading.\u003c\/p\u003e\n\u003ch6\u003eHelp\u003c\/h6\u003e\n\u003ch3\u003eFree advice for complex green roof projects\u003c\/h3\u003e\n\u003cp\u003ePlanning a roof garden with deeper substrate, trees, recreational space or paved areas? Our in-house technical team can provide free, practical guidance on whether UGR 60mm Storage \u0026amp; Drainage Boards are appropriate and which waterproofing, protection and filter layers your build-up may require.\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":"Default Title","offer_id":54207510053207,"sku":"UGR60SDB2","price":41.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/0150\/9207\/files\/inside_fw_1.jpg?v=1785811613","url":"https:\/\/urbangreenroofs.com\/products\/60mm-storage-drainage-board-1m-x-2m","provider":"Urban Green Roofs","version":"1.0","type":"link"}