{"product_id":"modular-pre-grown-sedum-green-roof-tray-500-x-500mm","title":"Modular Pre-Grown Sedum Green Roof Tray – 500 x 500mm","description":"\u003cp\u003eA green roof usually means weeks of waiting for a sedum blanket to knit together, or a loose-lay build-up of membrane, substrate and plug plants assembled layer by layer on site. This modular pre-grown sedum tray skips both: each tray arrives already planted with an established mix of drought-tolerant sedum species, complete with its own drainage layer and growing substrate built in, and simply clips together with the next tray to form a continuous, instantly green roof.\u003c\/p\u003e\n\n\u003cp\u003eIt suits a garden room, garage, home office, bin store or extension roof where you want a finished, vegetated roof on the day of installation rather than a roof that needs a growing season to fill in – and because each tray is a fixed, known unit, you can order exactly the quantity your roof area needs.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eArrives fully pre-grown – an established sedum roof from day one, not a bare blanket that fills in over a season\u003c\/li\u003e\n\u003cli\u003eDrainage, growing substrate and vegetation all integrated into one module – no separate loose-lay build-up needed\u003c\/li\u003e\n\u003cli\u003eTrays clip together for a fast, low-disruption install with minimal on-site cutting\u003c\/li\u003e\n\u003cli\u003eGenuinely low-maintenance, drought-tolerant sedum mix once established\u003c\/li\u003e\n\u003cli\u003eSold per tray so you can order the exact number your roof area requires\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse\" border=\"1\" cellpadding=\"6\"\u003e\n\u003ctr\u003e\n\u003cth\u003eTray size\u003c\/th\u003e\n\u003ctd\u003e500mm x 500mm x 100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoverage\u003c\/th\u003e\n\u003ctd\u003e0.25m² per tray (4 trays per m²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (dry)\u003c\/th\u003e\n\u003ctd\u003eApprox. 20kg per tray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (saturated)\u003c\/th\u003e\n\u003ctd\u003eApprox. 25kg per tray (100kg\/m²) – confirm your roof structure can carry this loading before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanting\u003c\/th\u003e\n\u003ctd\u003ePre-grown mixed sedum groundcover with integrated substrate and drainage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack options\u003c\/th\u003e\n\u003ctd\u003eSingle tray \/ Pack of 20 (5m²) \/ Pack of 40 (10m²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eOrdering \u0026amp; installation guidance\u003c\/h3\u003e\n\u003cp\u003eMeasure your flat roof area in m² and multiply by 4 to calculate the number of trays needed, then round up to the nearest pack option below. A root barrier membrane laid beneath the modules is strongly recommended to protect your waterproofing – see our \u003ca href=\"\/products\/green-roof-root-barrier-membrane\"\u003egreen roof root barrier membrane\u003c\/a\u003e. For a loose-lay alternative build-up rather than modular trays, see our \u003ca href=\"\/products\/sedum-green-roof-system-complete-blanket-kit\"\u003esedum green roof blanket kit\u003c\/a\u003e, and for the drainage layer used in a built-up specification see our \u003ca href=\"\/products\/green-roof-drainage-water-reservoir-board\"\u003egreen roof drainage \u0026amp; water reservoir board\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I still need a separate substrate or drainage layer?\u003c\/strong\u003e\u003cbr\u003eNo – each tray is a complete, self-contained module with drainage and growing substrate already built in. A root barrier membrane beneath the trays is still recommended to protect the roof's waterproofing layer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill my roof take the weight?\u003c\/strong\u003e\u003cbr\u003eA saturated tray weighs roughly 100kg\/m² – always confirm this loading (plus your own build-up and any snow load) with a structural engineer or your roof kit supplier before installing a green roof.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much maintenance does it need?\u003c\/strong\u003e\u003cbr\u003eSedum is drought-tolerant and low-maintenance once established, but an occasional light feed, weed removal and a check of the drainage outlets is recommended, particularly in the first year.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this go on a pitched roof?\u003c\/strong\u003e\u003cbr\u003eModular sedum trays are primarily designed for flat and low-pitch roofs; for anything beyond a shallow pitch, additional battens or restraint may be required – check with a specialist installer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow quickly does it need to be installed after delivery?\u003c\/strong\u003e\u003cbr\u003eAs a pre-grown, living product, trays should be installed as soon as possible after delivery – ideally within 48 hours – to keep the sedum in good condition.\u003c\/p\u003e\n","brand":"Rubber Roof UK","offers":[{"title":"Single Tray (0.25m²)","offer_id":50493288284351,"sku":"RRUK-SEDUMTRAY-1","price":59.0,"currency_code":"GBP","in_stock":true},{"title":"Pack of 20 (5m²)","offer_id":50493288317119,"sku":"RRUK-SEDUMTRAY-20","price":1125.0,"currency_code":"GBP","in_stock":true},{"title":"Pack of 40 (10m²)","offer_id":50493288349887,"sku":"RRUK-SEDUMTRAY-40","price":2245.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/1804\/9727\/files\/modular-sedum-green-roof-tray-installed-roof.jpg?v=1790240050","url":"https:\/\/rubberroofuk.uk\/products\/modular-pre-grown-sedum-green-roof-tray-500-x-500mm","provider":"Rubber Roof UK","version":"1.0","type":"link"}