Outdoor Engineering

Ever-better design with installers in mind

Wallbarn has been supplying pedestals and support pads in the UK for over 20 years and are constantly developing new products and designs to help installers of suspended paving and decking systems. They are proud to offer the most comprehensive range of support pads and pedestals in the UK.

In 2017 they launched a range of new products giving greater flexibility and scope to installers.

Clients require higher quality finishes these days and it is important that extremely precise height thresholds are met. They said they wanted a solution for paving or decking at extremely low heights, and existing fixed height pads were not always a good enough solution.

The company started to develop a better solution, spending over a year designing a fully adjustable, telescopic pedestal suitable to hold both paving slabs and timber joists (as part of a decking build-up).

The BALANCE adjustable paving pedestal

Also available are the BALANCE adjustable paving pedestals. Consider roof decks laid on built-up felt membranes, where a sizeable overlap across the roll exists. This leads to ridges being present across the roof and sometimes the pedestal ‘pivoting’ across these ridges.

Although slope connectors and shims are also effective on these areas and areas such as blemishes in concrete screed, for example; Wallbarn felt developing a levelling headpiece would offer a good solution for the client.

The MINI MEGAPAD 10-20mm

The MINI MEGAPAD 10-20mm is fully adjustable so split-millimetre differences in height are achievable. These 100% polypropylene pedestals are strong and load bearing, designed to be in situ long-term. At these very tight height levels adjustment is a problem, so Wallbarn designed the pad with a series of spokes around the circumference and a large handle on one side to allow ‘fat-fingered’ contractors to twist the units whilst the slab is in place.

Each unit has a telescopic thread 5mm high. The ‘pedestal’ comes as a kit with a 5mm thick extension plate which clicks to the underneath of the base. Move the unit from 10-15mm without the plate, add the plate and adjust from 15-20mm. For larger thresholds, users should then move to the Mini Megapad 22-30mm and 28-37mm.

The interface with the paving slab or timber joist is identical to the higher pedestals. The standard 2mm thick lug fittings for the paving pedestals can be clicked into position in the same way as other Megapads. Wider lugs, for a wider gap between slabs, can also be used in conjunction with the MINI MEGAPAD 10-20mm. For timber decking schemes, a large range of joist holder fittings are available.

Why has Wallbarn developed such a low height pedestal? Mainly due to the increasing levels of retro fitting in paving and decking systems. Obviously, its far easier to overlay, rather than take up and replace old terrace surfaces. However, this presents issues such as restricted height thresholds around areas such as existing doors and windows on roof decks and terraces.

The company also supplies a simple but effective metal plate for paving up to walls and parapets. The stainless steel plate is placed on top of the headpiece on pedestals being laid up to the wall. As Wallbarn’s standard baseplates are 200mm in diameter and the headpieces are 150mm in diameter, the end slab can overhang the headpiece slightly, risking that slab tipping if a person was to stand on the very lip. By adding the metal plate for paving, that edge slab is supported completely, creating a safer area on balcony edges.

Wallbarn has led the way in developing new designs of pedestals and continue to innovate and improve methods to install high quality suspended paving and decking on structural surfaces.

CAD images and BIM Objects for all the products mentioned above are available on our website


The BALANCE headpiece auto-levels up to a maximum charge of 5%, so it can arrest a fall up to 5% - or approx. 2 degrees. The headpiece is different to other self-levelling heads on the market. The pedestals will remain stable and the centre of gravity will pass through the centre of the pedestal, eliminating the risk of the pedestal slipping on the ridge areas. For further falls or slopes Wallbarn’s slope correctors can be added to the baseplate, up to a maximum slope of 10%. For roofs with greater than a 10% fall, pedestals are not the recommended solution.

The BALANCE adjustable pedestal range is available in heights from 25mm up to 395mm at the highest point. It is truly a product designed to accommodate unknown problems which arise on site.

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