Our Pedestals Offer Proven Durability

An image of an adjustable pedestal|An image of a construction project in Montreal|Megapad 22-30mm|Megapad 75-120mm

Any product used as part of a construction project needs to offer a guarantee of quality and durability.

With potentially catastrophic safety issues should any product fail to function once installed, it is absolutely essential that before purchasing a product, you are certain of its qualities.

Did You Know?

Inferior plastic will crack in sub-zero temperatures. So if your project requires the installation of decking supports or paving supports, what steps are you taking to ensure that you have a quality product?

Some manufacturers use fillers in order to save money – this can weaken the structural integrity of the pedestals but this is not the case with anything available from the Wallbarn product range. We do not cut corners and it is very important that you do not either when creating or retro-fitting a raised deck.

Our Megapads offer outstanding qualities and durability and are available in sizes ranging from 22mm to 1-20mm.

Safety Test Documentation

Do you have the required access to the safety test documentation for your required products? Our customers can request access to all the independently-verified technical data relating to any of our products.

High-Quality Decking Support Pedestals

The Wallbarn range of paving and decking supports are lightweight and easy to handle, helping to ensure a smooth installation but there has been no compromise in strength or durability to achieve this.

Amongst many other tests*, our products are temperature tested by an independent testing laboratory to ensure their continued functionality from temperatures ranging between -40°C and as high as +75°C.

Our robust range of decking and paving pedestals/supports are manufactured from injection moulded polypropylene and can tolerate loads of 683kg per unit Normal Weight Tolerance (end of linear behaviour) with a Maximum Load of 1171kg.

Offering proven durability, a project utilising our paving supports in Montreal in 2014 offers the perfect example. Exposed to extreme cold since their installation in 2014 and still working perfectly.

Offering Key Advantages

Our range of support pedestals share common features and benefits ensuring their quality and durability:

  • Achieve stunning finishes
  • Suspended system
  • Fully adjustable
  • Superior quality
  • Suitable for paving slabs and timber decking

*tests completed by an independent testing laboratory

Combating Stormwater Threat with Green Roofs

An image of a green roof installation on a house

A fascinating article in the Huffington Post recently highlighted the positive impact the installation of a green roofing system can have in regards to effectively combating excess rainfall.

Southern California has been exposed to one of the worse droughts on record and despite a little respite with rain beginning to fall, thoughts have turned towards implementing long term measures designed to help limit the negative impact of extreme weather.

The article stated that:

“One of the best strategies for improving the city’s resilience and water efficiency is to mimic the way undisturbed environments receive rain and adjust the built landscape to reflect qualities found in nature. Prior to urbanization, the land that is now Los Angeles could easily absorb 95% of the rain that fell. Today, stormwater floods the city with polluted water–wreaks expensive havoc–and then disappears into the ocean.”

“Living roofs (aka green roofs) contribute to resilience in many other ways. Not only do they absorb and filter rainwater during storms, but they also reduce ambient temperatures during heat waves (which are projected to increase over the coming decades), through the process of natural evaporation.  Drought tolerant plants grown on the roof provide insulation in summer and winter, keeping living spaces comfortable and reducing energy costs. Green roofs also pull carbon dioxide out of the air; they actively absorb one of the agents driving climate change in the first place.”

To read the full article, please click here.

Wallbarn Green Roofing Systems

Wallbarn have specialised in the growth and installation of green roofing systems for many years and have actively promoted the wide-ranging benefits to our customers.

For more on the benefits of installing a green roofing system, please visit the dedicated area on our website by clicking here.

Along with offering wide ranging environmental benefits, the green roofing products available from Wallbarn are also incredibly easy to install.


The Dangers of Using Recycled Plastics in Decking Supports

An image of an adjustable pedestal|An image of an adjustable pedestal

Modern day society places a strong focus on sustainability and utilising renewable resources. This can make it difficult for some people to understand why the choice is made to make certain products from virgin material.

Depending on how materials are re-processed, it can be impossible for recycled materials to replicate 100% of properties of virgin materials. As such, the degradation of these properties can play a detrimental role with regard to safety factors and durability.

This is not to say recycled plastics cannot be used in certain applications if the product is structural, a lower strength or safety rating can have very serious implications and this goes a long way towards explaining why some recycled materials often have lower safety ratings.

No Recycled Plastic Used In Our Paving & Decking Supports

With potential long-term viability issues relating to construction products such as decking supports constructed using recycled plastic fibres, we do not believe that there is any margin for error and therefore our range of decking support pedestals are made of virgin fibre injection moulded polypropylene.

Click Here To View Our Range of Balance Pedestals For Decking & Paving

Because we cannot guarantee or be assured in any way that the weight tolerances we require of our adjustable pedestals can be achieved by using recycled plastic, we simply cannot use this material.

Our range of decking and paving supports have all been subjected to testing by an independent testing laboratory, some of the most stringent testing available to ensure their qualities.

They are extremely tough and durable. Each support pad (at 35mm and above) able to tolerate a weight of 1,171 kg and tolerate temperatures as low as -40°C and as high as +75°C.

These tests are fully independent and have been created to assess the safety, the strength and the durability of a particular product.

Weight Tolerance* 683kg
Maximum Load* 1,171kg
Max Temperature Plus 75 ° C
Min Temperature Minus 40 °C

Take No Chances

Wherever weight tolerance and temperature exposure are of extreme importance, we strongly believe that no risks should be taken with the quality of the products used in the build.

Our products are designed to offer outstanding quality and our range of paving and decking supports offer a variety of key advantages, including:

  • Cost-effective entry-level support pads
  • Separate paving and decking from the base structure
  • Improve drainage
  • Protect surface beneath
  • Avoid the need for sand and cement
  • Easy maintenance – slabs can be removed for inspection or repair
  • Can take up surface easily for inspection
  • Fast & easy installation

* Weight tolerance = the point at which the pedestal ends its normal behaviour and starts to deform (according to an independent testing laboratory test 179112/1)
* Maximum load = the point at which pedestals start to collapse in laboratory tests (according to an independent testing laboratory test 179112/1)

4 Myths About Green Roofs

A close-up of completed M-Tray green roof installation in Hammersmith

Green roofs have dramatically increased in popularity in recent history. Popping up in areas ranging from the top of bus shelters all the way to the roofs of large corporations, the increase in visibility has also led to a significant increase in incorrect assumptions and misinformation.

To help put some of these myths to bed, we have outlined 4 of the most common and offer reasons why these myths are simply not true.

Myth No. 1: Green Roofs Are Ultra-High Maintenance

If you have to mow your lawn every couple of weeks in the summer, imagine how often you will have to maintain your green roof!

This is simply not the case at all. Whilst it is true that green roofs require some type of periodic maintenance, this is not an area that should raise any type of concern with regards to workload.

However, it must be remembered that ALL plants, even sedum species, require water. During extreme periods, the very hot British summer of 2018 is an example, extra irrigation will be needed. The basic rule of thumb is that if the sedum is turning red, it is in distress.

Because all commercial properties are required to have a twice-yearly roof and gutter checks, green roof maintenance can be factored into this requirement.

For more on maintaining green roofs, please click here

Myth No. 2: Green Roofs Are Just A Passing Trend

One of the original wonders of the world, the Hanging Gardens of Babylon, offers possibly the very first example of how flora can be used to make a building more appealing.

There are records showing that in the early 1900s, Germany was building flat green roofs in urban areas. They continued to do so throughout the century.

With a proven history and undeniable environmental and financial benefits, green roofs have stood the test of time and are now going from strength to strength.

A key environmental benefit has been highlighted by a recent study which discovered that one square metre of the green roof removed the equivalent pollution of an average car for an entire year.

Please click here for more information on this study

Myth No. 3: Green Roofs Can Cause Structural Damage And Leakage

One of the most common misconceptions relates to the damage that can be caused to a roof by the installation of a green roof.

Whether you have a standard roof or a green roof, the installation of an effective waterproofing membrane is essential.

There is absolutely no evidence which suggests that any type of green roof is susceptible to leaking. In fact, some studies* suggest that because green roofs cover the waterproofing membrane, protecting it from UV rays and extreme daily temperature fluctuations. This protection extends the lifespan of the waterproofing twice as long as conventional roofing, meaning that membranes under green roofs last twice as long as those on traditional roofs.

*Please click here for more information.

Myth No. 4: Adding a Green Roof Is Too Complicated/Too Expensive

Ensuring that your green roof is well designed and installed correctly is absolutely crucial. Many people over-complicate the process involved in choosing the perfect green roof because they don’t know where to start or how much it will cost them.

Choosing the right team of professionals will ensure that the process is done correctly, with a long-term view in mind whilst keeping costs to a minimum at all times

On the other end of the scale, there are some people who can oversimplify the process. Just putting some soil on top of your roof and adding some plants will be enough to create your very own bespoke green roof. This is definitely not a good idea!

What is the M-Tray®?

A green roof system consisting of modular trays containing superior substrate and established sedum plants nurtured from seed at our own UK nurseries.

What makes the M-Tray® unique?

Our M-Tray® has been specifically designed to make sedum roof installation quick and easy – with minimum disruption to the plants and the structure they are going onto – and to provide a seamless, verdant finish – an instant and sustainable green roof.

  • deep cavities for healthy roots
  • optimum drainage means stronger plants
  • established vegetation at point of installation
  • 100mm deep, specially-mixed substrate for the longevity of plant life
  • no sharp edges or mess, less risk to membrane
  • click-together trays create a seamless connection
  • easy to transport and install

Please Note – We only supply fully established, mature sedum plants contained within our easy-to-carry M-Trays® which click together to form an almost invisible join.

For more information on the M-Tray®, please visit the dedicated area of our website by clicking here.

Introducing The Pedestals Rail System

An image of the pedestal rail system with Megapads

With the sustained move towards the use of porcelain tiles rather than concrete tiles, finding a suitable framework to lay the tiles onto has taken on increased importance.

By using a framework created from our pedestal rail system and laying the tiles using pedestals and rails, extra support will be provided to the structure.

Innovative New Modular System

This new innovative modular system will allow you to lay ceramic planks, even long ones, with the minimum of effort allowing for aesthetic solutions which were not previously achievable with this new format.

Benefits of the rail system include:

  • Creates lateral stability across the deck by reducing movement
  • Bespoke headpiece clips onto profiled aluminium joist
  • Can support very thin tiles across the whole edge
  • Grid framework results in faster installation because flat levels can be achieved easier
  • Aluminium rail clicks securely onto Megapad pedestal
  • The modular system ensures that repairs are easier
  • Timber decking can also fix directly into rail for low height thresholds

Install Boards of Any Shape And Size

This new type of pedestal rail system is suitable to help install decking boards and stonewares or slabs made of stone and ceramics, of any shape and size.‎

However, the introduction of the pedestal rail system to the market ensures that outdoor raised floors can be created with boards and a mixed top finish.‎

Ideal for set-ups with large-sized stoneware tiles, the pedestals rail system provides stability and finishes that have not been thought of so far with ceramic stonewares.‎

Constructed from lightweight, resistant aluminium, together with the pedestals, it guarantees a capacity and solidity that cannot be compared to that without the joist.‎

Why Are Porcelain Tiles Becoming More Popular?

Known for their strength, durability and outstanding aesthetics, porcelain tiles are generally regarding as offering a significant upgrade over standard tiles.

  • Resists wear
  • Low maintenance
  • They look great!
  • Suitable for areas of high traffic
  • Diverse range of styles available
  • Outstanding durability
  • Easy to clean

For more information about our pedestal rail system, please click here.

The Wallbarn M-Tray® Sedum Wildflower Green Roof Module

The advances made in the design of the new M-Tray® model have created a number of key advantages including:

  • deeper cavities for extra root growth
  • optimum drainage leading to stronger plant growth
  • more established vegetation at point of installation
  • more efficient transport and packaging
  • exactly 4 units per m2
  • easier to carry trays with smooth handles

  • a closer connection between trays for more seamless plant growth
  • no sharp edges, less risk to the membrane
  • nothing spills out, less mess
  • made from recycled plastic with a recycled substrate
  • less packaging, less waste
  • UK designed and manufactured in the UK

M-Tray® With Wildflower

As well as the sedum trays, Wallbarn plants up a wildflower mix into the M-Tray®. A varied mix of at least six different native species has been selected. All these flowers and herbs are low growing, hardy species, chosen to be pollinators for butterflies and bees.

Why Modular?

The main advantages of modular over roll-out green roof systems include convenience and speed of installation, futureproofing, and the delivery of instant results.

All the elements required for a successful green roof have been measured and installed into the M-Tray® modules at the nursery.

Users can feel confident that the plants, growing medium and filtration components are suitable and compatible, and at the correct level to give strong, healthy growth over the long term.

The trays are grown for a period of at least 6 months and all will have been through at least one spring growing season; so the plants are well established, healthy and strong, and fully integrated into the substrate (unlike sedum blankets, which are not).

Mess and disruption are big issues with roll-out systems.

Moving bags of aggregate-based substrate onto rooftops is fraught with risk – the aggregate goes everywhere and as it is so granular, it can damage waterproofing membranes very easily. Sedum blankets are also supplied rolled up, so the plants get damaged during the transport and installation process.

This is not the case with the M-Tray® modules.

Enhanced Accessibility

Another key benefit is accessibility. As each module is 500 x 500mm, one M-Tray® can be carried by one operative. For areas which are very difficult to access, such as single-storey extensions, domestic projects and other completed structures, roll-out is simply not possible. M-Tray® can be hand-balled into even the most awkward areas, even carried through a window (pictured) if necessary. They are the perfect retro-fit product.

Speed is also a major factor. It has been proven that green roofs constructed using Wallbarn M-Tray® are installed much faster than in traditional roll-out methods.

It is also an instant green roof. Since the sedum is less shocked by the installation process, as soon as the trays are connected together the whole area is filled with well-established plants. They will start to grow straight away, forming a seamless layer of vegetation much faster.

Access to the roof is future-proofed. 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.

The modular green roof panels are packaged and delivered in the most convenient manner.

By being palletised, the plants can get to the roof quickly and without the risk of damage.

Contact Us

For more information, please visit the dedicated area of our website via the following link – https://www.wallbarn.com/products/m-tray/

If you have any questions or want to make an enquiry, please call 0208 916 2222 / sales@wallbarn.com

Currently Browsing: The Wallbarn M-Tray® Sedum Wildflower Green Roof Module

Installing green roofs: some planning tips

Wallbarn Green Roof System shoot in Wimbledon and Heathrow - 1



Key planning considerations
for installing a green roof

If you are thinking of installing a green roof, there are a few things you need to think about prior to starting….from budget to maintenance.


Read our guidance here


Can we help you with a green roof project?

Our team is ready to answer your questions:


020 8916 2222



Online chat



Can a ‘green roof’ strategy could reduce the impact of excess rainfall?

A close up image of a green roof installation

A green roof strategy could help cut the negative impact caused by severe storms and flooding, studies have shown.

Effective Protection Against Excess Rainfall

A study by the United States Environmental Protection Agency has taken a closer look at the way green roofs can effectively combat the threat posed by annual rainfall.

“Results indicate that the green roofs are capable of removing 50% of the annual rainfall volume from a roof through retention and evapotranspiration. Rainfall not retained by green roofs is detained, effectively increasing the time to peak, and slowing peak flows for a watershed.”

“There are seasonal considerations as more runoff is generated during winter and for many summer storms, there was no runoff. Green roof runoff does contain concentrations of some nutrients and other parameters, but values are in line with other planted systems. Due to the volume reduction, actual nutrient loadings from green roofs are less than asphalt roofing runoff or otherwise manageable at the downspout.”

Click here to view the full study.

Amazing Results

Researchers at Newcastle University compared the effectiveness of urban green infrastructures such as green roofs, ponds, and water channels with traditional engineering measures such as culverts or flood walls in reducing disruption during extreme rainfall events such as ‘Thunder Thursday’.They found that greening every roof in the city could reduce travel disruption by over 25%.

Green infrastructure uses natural processes to store rainwater and decrease the amount released on roads and pavements.

As a result, the depth of flooding is reduced which can make its impact more manageable.

Richard Dawson, professor of earth systems engineering at Newcastle University, said: “We saw on Thunder Thursday the massive amount of damage and disruption that flooding can have on our transport networks.”

For more on this story, please click here.

Additional Benefits of Green Roof

Along with this huge benefit, the installation of a green roof also offers the following benefits to the property and the surrounding area.

The benefits of constructing a green roof include:

  • Improving the local environment by providing wildlife habitats
  • Absorbing CO2, pollution and particulates from the atmosphere
  • Improving sound and vibration insulation
  • Improving thermal insulation
  • Reducing the amount and speed of rainwater run-off by around 50% and forming part of a SUDS design
  • Reducing the “heat island” effect in built-up areas and helping to improve air quality and environment
  • Protecting the structure and waterproofing membrane from:
    • UV light and heat from the sun
    • impact and abrasion
    • environmental elements including extremes of temperature
    • plant and bird infestation
  • Ballasting inverted waterproofing systems
  • Optimising the structural footprint by:
    • Increasing space – providing new and attractive natural amenity areas
    • Adding floor space in often high-density developments
    • Adding focal points
    • Decreasing energy costs
    • The increasing value of the development
    • Properties with green roofs sell/rent faster rate than naked buildings
  • Making the planning process easier
  • Money saving

Innovation in Green Roofing Systems

Wallbarn has developed a new, improved design for the M-Tray® modular green roof system for 2019. This pre-grown sedum green roof product is supplied in easy-to-handle plastic tray units.

For more on this, please click here.

Currently Browsing: Can a ‘green roof’ strategy could cut storm traffic delays

Wallbarn Timber Tiles – Reaching The Parts Other Tiles Cannot Reach

An image of a completed timber decking tiles installation|An image of a completed timber decking tiles installation

The installation of timber decking to a roof can pose a number of problems with accessibility being a significant issue for many decking projects.

The range of hardwood timber tiles available from Wallbarn is absolutely ideal for installations with very limited height thresholds and are perfect for areas which are inaccessible for other decking products (longer planks).

Key Attributes

All our timber possesses the following qualities:-

  • Are ultra-hard and dense.
  • Are long lasting.
  • Are resistant to moisture ingress and rotting.
  • Have smooth grains that are unlikely to splinter or scratch on the surface.
  • Are resistant to insect and mildew damage.
  • Are strong and weight bearing.

Many projects face issues relating to accessibility and time constraints but because our timber decking tiles measure just 500 x 500mm they can easily be carried by hand to ensure their suitability for even the most inaccessible of areas.

The perfect example of how these can be utilised can be found in the following case study

Wide Ranging Benefits

Hardwood timber tiles offer an easy way to lay attractive decking onto rooftops and terraces.

The key benefits include:

  • By using suspended timber tiles, installers can combine the natural, attractive finish of timber decking with the speed and ease of laying paving slabs.
  • Traditionally, laying decking directly onto surfaces means employing a specialist carpenter, this is not necessary with our range.
  • Laying timber joists directly onto a waterproofing membrane also risks damage over time.
  • The weight of the tiles holds them in place.
  • Suspending the tiles on our support pedestals avoids having to fix anything to the deck and lifts the timber away from standing water.
  • As everything is free-standing, the tiles can be taken up and replaced without disrupting the whole area, should the deck need to be inspected.
  • Unsightly items such as drainage outlets, cables and pipes are hidden beneath the tiles.

Offering The Ideal Solution

Whilst traditionally laying timber decking directly onto these deck surfaces led to additional costs of employing specialist carpenters and laying timber joists directly onto the waterproofing membrane also risked damage over time, our timber paving tiles have been specifically designed to offer the perfect solution as the weight of the tile will hold the system in place.

This suspended system avoids having to fix anything onto the deck and lifts all the timber away from any standing water, avoiding the dangers of a slippery surface.

Because everything is free standing, the tiles can be taken up and replaced without disrupting the whole area, should the deck need to be inspected. Unsightly items such as drainage outlets, cables and pipes can be hidden beneath the tiles and accessed easily.

Stunning finishes can be achieved. The tiles can be laid in a straight line pattern or in a “chess board” style, depending on the client’s wishes. We have a range of different timber available sourced from South America, chosen for their beauty and durability.


Click here for more information about our range of hardwood timber decking tiles

What Makes The M-Tray® Perfect For Retro-Fitting

Retro-fitting is a very common practice amongst many industries. Thanks to the modular nature of the M-Tray®, we offer the ideal solution for anyone looking to add a green roof to an existing open space and one that is significantly more cost-effective than the construction of new facilities.

Our M-Tray® has been specifically designed to make sedum roof installation quick and easy – with minimum disruption to the plants and the structure they are going onto – and to provide a seamless, verdant finish – an instant and sustainable green roof.

Not only this, once installed, access to the roof is future-proofed. 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.

The Perfect Solution For ‘Hard to Access’ Areas

Perceived accessibility issues and concerns relating to potential disruption during installation are common reasons for property owners assuming that the installation of a green roof may not be possible for their building. This is true when it comes to retro-fitting a green roof onto a rooftop area.

However, thanks to the modular nature of the M-Tray®, we are able to provide a viable option for areas which are simply not suitable for other types of green roof installation.

Moving bags of aggregate-based substrate onto rooftops is fraught with risk – the aggregate goes everywhere and as it is so granular, it can damage waterproofing membranes very easily. Sedum blankets are also supplied rolled up, so the plants get damaged during the transport and installation process.

This is not the case with the M-Tray® modules.

Fast and Effective Installation

Not only are our M-Trays® easy to install and transport, but they will also last in the long term. Every now and again throughout the year, you will need to do some maintenance e.g. weeding but apart from that, our trays are designed to be as self-sufficient as possible (they are designed to capture rainwater, releasing it gradually, feeding the species set into our special substrate).

The modular units clip together allowing the plants to blend into a seamless, established and sustainable green roof.

The benefits of a modular green roof include:

  • Convenience and speed of installation
  • Future-proofing your roof
  • Instant results

The Perfect Example

The perfect example of how the M-Tray® offers the perfect solution for any almost area was a recent installation at the May Fair Hotel, Mayfair, London.

Because the M-Tray® is completely self-contained, we were able to carry them through the hotel on luggage trolleys up to the rooftop balcony without creating any mess with minimal disruption to complete the installation.

This allowed us to transform what was previously a fairly unsightly bitumen rooftop at a Mayfair hotel into a beautiful green space for guests to enjoy.

To find out more about the M-Tray®, please click here to visit the dedicated area of the site or call us at Tel. No. 020 8916 2222.