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Wallbarn M-Tray Modular Sedum Wildflower Green Roof - 500mm x 500mm

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£31.00 Incl. VAT
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It is getting easier and cheaper to convert flat roofs and podium decks into attractive, useful, environmentally friendly green spaces. But it is Wallbarn's innovative modular solution that has taken the greatest strides in overcoming some of the challenges historically associated with designing and installing green roofs.

Wallbarn's Sedum Wildflower M-Tray - designed to create an instant green roof.

Pre-grown to maturity, the superior vegetation in Wallbarn's M-Trays is pre-grown in specially-designed modules for approximately six months at their dedicated UK nursery. Wallbarn have developed its own specially-designed substrate mix which means there is considerable root growth already in the tray. This ensures that by the time they are delivered the plants are strong, established and provide consistent cover over the intended area.

The modules contain a carefully-selected mixture of flowering sedum and wildflower varieties, providing year-round greening and also different textures and flowers throughout the summer.

The varieties of wildflower used in this green roof system will flower from Spring to late Summer. This means that without a significant amount of sedum in the mix, the green roof can appear sparse and patchy in places, which will affect the aesthetics of the green roof system during Autumn/Winter. For customers wanting all year round full coverage, a sedum only option is also available.

Please note, annual flowers often take 2 to 3 years to germinate and many also require a hard winter frost to crack the seed cases. Perennial flowers will often start to flower at the end of Summer too, so customers are warned not to expect an instant spring meadow replicated on their roof.

How easy is it to install Wallbarn M-Tray's?

The modules are highly portable and simply clip together, meaning they can be installed much faster than roll-out systems without any specialist landscaping or roofing knowledge. The M-Tray's unique design means rainwater gets retained far longer and very little maintenance is required through the seasons.

Prior to installation, a geotextile fleece should be laid under the trays to help prevent soil deposits entering the drainage system. Wallbarn supplies a recycled geotextile fleece for this purpose.

Features & Benefits

  • No loose substrate on the roof
  • Low growing, perennial plants chosen specifically to reduce fire hazard risks
  • No sharp aggregate damaging your waterproof membrane, blowing away or clogging up drains
  • Modules packed onto pallets for easy transportation
  • Ideal for areas with restricted access
  • Faster, easier installation
  • Expert knowledge not required for installation
  • Vegetation fully established with strong, healthy growth
  • Strong root structure reduces dependence on irrigation
  • An instant and sustainable green roof


Size: 500mm x 500mm

Trays per m2: 4

Weight: 20kg (24kg when saturated)

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Questions & Answers


I have a fibreglass roof the water lies on it to a depth of about 10mm along the edge . ( the roofer said this is normal ) would that cause a problem . I live in south lanarkshire. regards steve


I can't this being an issue, if anything the roof will see less water as the M-Trays® will capture a large percentage. Also, with the use of the geotextile underlay - GE-PE-PECT-0300-Z this will help to absorb the standing water and allow the trays to draw from it.


Can these be installed directly onto a rubber roof and cause no damage?


You will need to buy a TNW3000 Protection fleece to lay down first.


My site is 1.35 x 0.85m can the trays be cut to size?


You cant really cut the trays without the soil falling out. You would just leave a stone perimeter around the end of the trays to fill the roof space out.


How high are these trays?


The trays are 100mm in depth.

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Wallbarn M-Tray Modular Sedum Wildflower Green Roof - 500mm x 500mm

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