{"product_id":"20mm-deck-wall-drainage-membrane-2m-x-10m","title":"UGR 20mm Deck \u0026 Wall Drainage Membrane 2m x 10m","description":"\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHigh-performance drainage for green roofs and landscaped decks\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe two-layer membrane combines a water-impermeable 20mm studded HDPE core with a polypropylene geotextile permanently bonded to its surface. Water passes through the filter fabric into the deep drainage cavity, where it can move freely towards the roof outlets or drainage system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe geotextile helps prevent soil fines and other small particles from entering and obstructing the drainage space, maintaining effective water movement beneath the green roof or landscaping build-up.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eDesigned for demanding loads\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUGR 20mm Deck \u0026amp; Wall Drainage Membrane has a compressive strength of approximately \u003c\/span\u003e\u003cspan\u003e240kN\/m²\u003c\/span\u003e\u003cspan\u003e, equivalent to a pressure resistance of up to approximately 24 tonnes per square metre when correctly installed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIts stud profile distributes loads across the surface beneath it, making the membrane suitable for correctly designed systems incorporating:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eIntensive green roofs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRoof gardens\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eDeep growing substrates\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\n\u003cspan\u003eWalkable decks and patios\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eDrivable deck paving\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eHard landscaping\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eLandscaped roofs above underground car parks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eOther heavily loaded roof build-ups\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe complete structure, surfacing and supporting layers must still be designed for the anticipated loading and traffic.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFast drainage through a 20mm cavity\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe deep studded profile creates approximately \u003c\/span\u003e\u003cspan\u003e14 litres of open air space per square metre\u003c\/span\u003e\u003cspan\u003e beneath the geotextile.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis provides a water-drainage capacity of approximately \u003c\/span\u003e\u003cspan\u003e9.28l\/(s·m) at 20kPa\u003c\/span\u003e\u003cspan\u003e, helping move excess water away from the planted or paved surface.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe product’s drainage capacity is stated as approximately 30 times higher than the requirement of drainage standard DIN 4095.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eIntegrated filtration layer\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe bonded polypropylene geotextile:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAllows water to enter the drainage cavity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFilters soil, substrate fines and other small particles\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eHelps prevent blockage of the drainage space\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eResists significant deformation as working loads increase\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRemains securely positioned during installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRemoves the need for a loose filter fabric directly above the membrane\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor horizontal green roof and landscaping applications, the geotextile faces upwards towards the substrate, gravel or overlying construction.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eSuitable applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUGR 20mm Deck \u0026amp; Wall Drainage Membrane can be used for horizontal drainage within:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eIntensive green roofs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRoof gardens\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eLandscaped podiums and decks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eWalkable and drivable paving systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003ePatios over suitable waterproofed structures\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eEarth-retaining roofs above underground car parks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eOther hard and soft landscaping build-ups\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIt may also be installed vertically as a protection and drainage layer over primary external waterproofing on below-ground walls.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere this membrane fits in a green roof\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA typical horizontal build-up may include:\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eStructural roof deck\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003ePrimary waterproofing and any specified gas or radon barrier\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRoot barrier, where required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eProtection layer, where specified\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003eUGR 20mm Deck \u0026amp; Wall Drainage Membrane\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eGrowing substrate, aggregate or specified landscaping build-up\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eVegetation, paving or another compatible finish\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhere separate root protection is required, install \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/urbangreenroofs.com\/products\/green-roof-root-barrier\"\u003eUGR Green Roof Root Barrier\u003c\/a\u003e.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHorizontal installation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe surface to be drained should have a fall of at least \u003c\/span\u003e\u003cspan\u003e2.2%\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eComplete the primary waterproofing and any required root barrier or protection layers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eBegin at the lowest part of the roof or deck fall.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRoll out UGR 20mm Deck \u0026amp; Wall Drainage Membrane with the bonded geotextile facing upwards.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003ePull back the loose geotextile edge to expose the dimpled membrane.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eApply compatible jointing tape or a bead of membrane adhesive between the first and second rows of studs.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003ePosition the next roll above the first, overlapping approximately three rows of studs.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003ePress the connection firmly together and return the geotextile over the joint.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eAt perimeter walls, rooflights and other upstands, take the membrane up by at least 150mm or to the upper edge of the finished substrate or infill.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eComplete the roof with the specified growing substrate, gravel or landscaping build-up.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor jointing adjoining sheets, use \u003ca href=\"https:\/\/urbangreenroofs.com\/products\/membrane-jointing-tape-50mm-x-10m\"\u003eUGR Membrane Jointing Tape\u003c\/a\u003e. Alternatively, where appropriate, consider \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/urbangreenroofs.com\/products\/high-strength-membrane-adhesive-310ml-cartridge\"\u003eHigh Strength Membrane Adhesive\u003c\/a\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eVertical below-ground installation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUGR 20mm Deck \u0026amp; Wall Drainage Membrane may also protect and drain external below-ground waterproofing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe black drainage core is positioned against the waterproofed wall, with the geotextile facing outwards towards the backfill.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor walls below 2m high, the 2m-wide membrane can potentially be installed horizontally without an intermediate lap. On taller walls, it should be cut into vertical sheets.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAdjoining sheets are overlapped so that the geotextile continues over the preceding drainage core. One to three rows of studs can be interlocked to help keep the rolls aligned, with the flat edge flange sealed using compatible tape.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe membrane should connect to a suitably designed and maintainable land drain or French drain at foundation level. The upper edge must be capped to prevent debris and backfill entering the drainage cavity.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eLong-lasting and resistant\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUGR 20mm Deck \u0026amp; Wall Drainage Membrane is:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eChemically resistant\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eSuitable for temperatures from -30°C to +80°C\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eSafe for contact with drinking water\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFire classified as Class E\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eGuaranteed against deterioration for 30 years\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTested and CE marked to the relevant standard\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe membrane is manufactured from virgin HDPE, with a bonded polypropylene geotextile.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eImportant suitability note\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUGR 20mm Deck \u0026amp; Wall Drainage Membrane is a \u003c\/span\u003e\u003cspan\u003eprotection and drainage membrane\u003c\/span\u003e\u003cspan\u003e, not a primary waterproofing membrane.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIt must be installed above a suitable, fully bonded waterproofing system. For below-ground structures, the complete design should form an appropriate Type A barrier system in accordance with BS 8102:2022.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIt is also primarily designed to drain water rather than retain it for vegetation. For a green roof membrane with dedicated water-storage capacity, consider \u003c\/span\u003e\u003ca href=\"https:\/\/urbangreenroofs.com\/products\/20mm-storage-drainage-membrane-2m-x-10m\" style=\"font-size: 0.875rem;\"\u003eUGR 20mm Storage \u0026amp; Drainage Membrane\u003c\/a\u003e, \u003cspan\u003e\u003ca href=\"https:\/\/urbangreenroofs.com\/products\/40mm-storage-drainage-board-1m-x-2m\"\u003eUGR 40mm Storage \u0026amp; Drainage Board\u003c\/a\u003e or \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/urbangreenroofs.com\/products\/60mm-storage-drainage-board-1m-x-2m\"\u003eUGR 60mm Storage \u0026amp; Drainage Board\u003c\/a\u003e.\u003c\/span\u003e\u003cbr\u003e\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 0px; vertical-align: top;\"\u003e Material\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Virgin HDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Membrane weight\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 1,000g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Geotextile\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Polypropylene, approx. 100g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Total weight\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 1,100g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Stud height\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Number of studs\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 400\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Colour\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Roll dimensions\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e 2m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Coverage\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e 20m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Compressive strength\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 240kN\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Max pressure load\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 24 tonnes\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Water-drainage capacity\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 9.28l\/(s·m) at 20kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Air volume between studs\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 14l\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Temperature resistance\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\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 0px; vertical-align: top;\"\u003e Characteristic opening width\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 170μm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Water permeability\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Approx. 100 × 10⁻³m\/s (EN ISO 11058)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Fire resistance\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Class E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Chemical properties\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Chemically resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Drinking-water safe\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Accreditation\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e Tested and CE marked\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px 6px 0px; vertical-align: top;\"\u003e Guarantee\u003c\/th\u003e\n\u003ctd style=\"padding: 6px 0px;\"\u003e 30 years against deterioration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch6\u003eFAQs\u003c\/h6\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eDoes UGR 20mm Deck \u0026amp; Wall Drainage Membrane waterproof the roof?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNo. It is a protection and drainage layer that must be installed above a suitable primary waterproofing system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eDoes it include a filter layer?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eYes. A polypropylene geotextile is permanently bonded to the studded membrane, helping prevent soil and other small particles from blocking the drainage cavity.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhich way up should the membrane be installed?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eFor horizontal green roof and deck applications, install it with the geotextile facing upwards. On external walls, the black drainage core faces the waterproofed wall and the geotextile faces the backfill.\u003c\/p\u003e\n\u003ch4\u003eCan it be used for both extensive and intensive green roofs?\u003c\/h4\u003e\n\u003cp\u003eYes, subject to overall system design, structural loading and planting requirements.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eDoes UGR 20mm Deck \u0026amp; Wall Drainage Membrane store water for plants?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003eIts primary function is rapid drainage and protection rather than dedicated plant-water storage. For water retention, consider \u003ca href=\"https:\/\/urbangreenroofs.com\/products\/20mm-storage-drainage-membrane-2m-x-10m\"\u003eUGR 20mm Storage \u0026amp; Drainage Membrane\u003c\/a\u003e, \u003ca href=\"https:\/\/urbangreenroofs.com\/products\/40mm-storage-drainage-board-1m-x-2m\"\u003eUGR 40mm Storage \u0026amp; Drainage Board\u003c\/a\u003e or \u003ca href=\"https:\/\/urbangreenroofs.com\/products\/60mm-storage-drainage-board-1m-x-2m\"\u003eUGR 60mm Storage \u0026amp; Drainage Board\u003c\/a\u003e depending on the project build-up.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003eHelp\u003c\/h6\u003e\n\u003ch3\u003eNeed help comparing the drainage membranes?\u003c\/h3\u003e\n\u003cp\u003eNot sure whether the UGR 20mm's 6l\/m² storage capacity is right for your planting, or whether a lower- or higher-capacity membrane would better suit the roof? Our in-house technical team can provide free advice on product selection, roof build-up and compatible supporting layers.\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":54857459695959,"sku":"UGR20DWDM20","price":187.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/0150\/9207\/files\/PermaSEAL_20_Geodrain_Main_Image_1000_x_1000.jpg?v=1788425451","url":"https:\/\/urbangreenroofs.com\/products\/20mm-deck-wall-drainage-membrane-2m-x-10m","provider":"Urban Green Roofs","version":"1.0","type":"link"}