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New generation Clear Channel bus shelters dressed with M-Tray® wildflower green roofs are rolling out across UK
Pitched against some high-quality roofing products, our M-Tray® modular green roof system beat off all competition to secure the coveted title of Best Roofing System or Product in the 2020 Build It awards.
The M-Tray® has also won the award for ‘Best Green Innovation’ at the 2021 Green Home Awards.
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There is an incredible opportunity to retrofit green roofs on potentially millions of square metres of flat space in urban settings to bring enormous benefits to both the local environmental and to the structure they cover.
Invented by its Director Julian Thurbin, Wallbarn has a vision to overlay lost or forgotten surfaces in the public realm with natural and sustainable solutions so we can, bit by bit, reclaim nature in the high density urban landscape to improve the environment and help the planet.
Because M-Tray® is modular and pre-grown, it is particularly ideal for retrofitting on existing structures. It creates and instant, mature green roof and is easy to estimate and easy to install.
Green roofs absorb rainwater, alleviating storm run-off into drainage systems. They absorb dust, soot and other pollution from the air. They cool flat surfaces by absorbing heat from the sun instead of radiating it back into the atmosphere. They reduce ambient temperature and mitigate the Urban Heat Island Effect. They protect the surface of the structure they dress and of course they attract wildlife as well as being far more attractive that what they are covering.
It is estimated that there are nearly 400,000 bus stops and bus shelters in UK. As well as bus shelters there are thousands of train station roofs, carpark decks, overpasses, substation roofs and a myriad of other concrete flat surfaces which are prime sites for green roofs and living walls.
Imagine the environmental benefit across cities and across the planet if we could turn the grey and black hard surfaces that surround us into soft, beautiful, living areas. M-Tray® is our attempt to help with this crusade.
100mm aluminium edge trims and connectors fit neatly onto the sides of the modules. Fixings are designed to slot together neatly although they are not always necessary.
Access to your green roof is futureproofed.
If there are problems with the deck beneath or inspection is required, one M-Tray® or section can easily be lifted out without disruption to the whole roof, unlike roll-out which often involves the removal of tonnes of soil and vegetation, which then would need to be replaced at an additional cost to the client.
Sedum or other succulent plants grown into low-level substrates for construction on flat roofs and podium decks.
An instant green roof, pre-grown at our farm in specially designed cassettes. They can be hand-carried and click together to form a seamless green roof. They are lifted into place and can be easily removed to give access to the deck.
Speed of installation; accessibility; less mess and disruption; instant results; future proofing
All prices are subject to alteration.
At our farm near Basingstoke, Hampshire
500mm x 500mm x 100mm deep
4 x modules
100kgs/m² – we recommend that you consult an Engineer to advise on loadings (120 kg/m² saturated)
The vegetation is a mix of 11 x Sedum species. We also have a Wildflower/Sedum mix available upon request.
The modules are not designed for foot traffic but can tolerate being stepped on for maintenance purposes.
Yes, however, like any living plant, an element of light is required.
No. However we can produce a layout guide along with estimates for trays, geotextile fleece and border pebbling if required.
Yes. Fire regulations require a hard border between vegetation and the walls of buildings as well as around features such as roof lights and fall arrests (consult GRO code for more details)
Our M-Trays® have been grown at our farm for several months prior to delivery. They will arrive with a minimum 90% cover.
From £80.00 per pallet (max 32 units/pallet). NB The M-Trays® need to be removed from the pallet immediately. Pebbling and geotextile fleece can be delivered separately.
M-Tray® can be laid on a level area and on a slope up to 15°. Ideally, we recommend not going above 10°.
The sedum is very hardy and will tolerate extreme conditions. Watering the sedum in extreme conditions is advisable and we can supply an irrigation kit if required.
At the end of Summer and end of Winter we recommend taking time to remove any dead leaves and vegetation that have accumulated.
Application of a slow release fertiliser is advisable at certain times of the year.
For best year-round results we do recommend installing an irrigation system although this is not absolutely necessary.
This depends on your individual requirements.
Standard:
Optional:
This is our 4th generation of the module, designed and manufactured by Wallbarn here in the UK. The 100mm deep tray with its optimum drainage; our specially mixed substrate and careful choice of mature and hardy sedum species mean the M-Tray® is the best quality modular system on the market.
The M-Tray® modules are delivered stacked onto pallets and must be unpacked within 24hrs of delivery. A crane and forklift may be needed to transfer pallets onto the roof.
Pitched against some high-quality roofing products, our M-Tray® modular green roof system beat off all competition to secure the coveted title of Best Roofing System or Product in the 2020 Build It awards.
The M-Tray® has also won the award for ‘Best Green Innovation’ at the 2021 Green Home Awards.
Our M-Tray® modular green roof system has a B ROOF t4 fire rating classification.
To meet current building regulations for fire stakeholders need to demonstrate that the whole ‘as installed’ roof system has a valid fire certificate, tested in accordance with CEN/TS 1187:2012 Test 4 External Fire Penetration and Spread of Flame and the classifications under BS EN 13501-5:2016 Fire Classification Of Construction Products And Building Elements.
A roof system when tested to CEN/TS 1187:2012 Test 4 Test Methods For External Fire Exposure To Roofs should achieve a European classification rating of B ROOF t(4).
Under Approved Document B only a test report to BS EN 13501-5:2016 for the exact construction or an EXAP report proves compliance; unless the green roof build-up from the deck to the finished surface includes a minimum 80mm of growing medium with less than 50% organic content.
M-Tray® by Wallbarn was tested according to CEN/TS 1187 and has both a Classification of B ROOF t(4) and an EXAP Report carried out in conformity with CEN/TS 16459:2019.
Furthermore, the growing medium is 100mm thick and contains less than 50% organic content. It complies both to BS 8616:2019.
This is construction law in England. Similar laws apply in the building regulations of Wales, the building regulations of Northern Ireland and in the Technical Handbooks for Scotland.
> M-Tray B ROOF t4 Extended Application Report
> M-Tray B ROOF t4 Indicative Test Report
> M-Tray B ROOF t4 Classification Report long form
> M-Tray B ROOF t4 Classification short form
> M-Tray B ROOF t4 Test Report
> J002980 Walbarn Green Roof Module Substrate Specification incl Organics Content
| Product | M-Tray® Modular Green Roof Container |
|---|---|
| Suitable For | Extensive Green Roof Plants With Lightweight, Free-Draining Substrate |
| Type Of Construction | Permanent |
| Width / Breadth | 500mm X 500mm |
| Height | 100mm |
| Shape Of Walls / Sides | Tapered / Angled |
| Units Per M2 | 4 |
| Material | Recycled Polypropylene |
| Thickness Of Material | 3mm |
| Internal Ridge Height / Reservoir Height | 20mm |
| Number Of Internal Drainage Reservoirs | 25 |
| Drainage Holes Per Unit | 8 |
| Distance Between Trays At Base | 20mm |
| Distance Between Trays At 50mm From Base | 10mm |
| Dry Weight (Empty) | 1.1Kg |
| Weight Planted & Saturated * | 25Kg (100kg per m² excluding snow load) |
| Connectors Per Unit | 4 |
| Number Of Handles On Underside | 4 |
| Detail Of Corners / Edges | Smooth / Reinforced |
| UK Registered Design | 6140192 |
| UK Registered Trademark | UK00003041800 |
| UK Registered Cloned EU design post-Brexit | 90029539430001 |
| USA US Patent | D787,186S |
| USA Registered Design Application | 29/802,855 |
| EU Registered Design | 002953943-0001 |
| EU Registered Tradename | 15388523 |
| Canada Registered Design Application | 205094 |
| Argentina Registered Design | Nº100508 |
| UAE Registered Design Application | D6000639/2021 |
M-Tray O&M Manual 2023 with Appendix
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As well as supplying live products for installation on UK green roofs and landscaping spaces, Wallbarn is committed to M-Tray® as an export product.
We can supply the modules as empty trays for local landscapers worldwide to plant up and propagate according to the local climactic conditions and their own markets.
Licensing opportunities are available for both the M-Tray® brand and the mould, which can be granted to specific partner companies across the globe.
M-Tray® has been designed and developed by Wallbarn in the UK and holds registered designs and patents in the following territories:
| Country | IP Right | Status | Registration No. |
| UK | Design | Registered | 6140192 |
| UK | Trademark | Registered | UK00003041800 |
| USA | Design Patent | Registered | D787,186S |
| EU | Design | Registered | 002953943-0001 |
| UK | Cloned EU design | Registered | 90029539430001 |
| EU | Trademark | Registered | 15388523 |
| Argentina | Design | Registered | 100508 |
| UAE | Design | Registered | 7498 |
Our aim is to get more green spaces into urban centres worldwide. With M-Tray® this is a possible and economically viable prospect. Join us in our vision.
