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Plain stackable support pads can only be altered in height by doubling, tripling in size or by adding shims of a few millimetres.
For roofs built to falls where there are changes in levels by a very small or irregular amount, where there is a continuous fall over a large area, or where there are multiple and complicated changes in the fall and levels across the roof – then the ASP range of Adjustable Support Pads are the perfect tools.
Wallbarn’s ASP adjustable support pads are ideal as the stems pieces can be wound up and down to create level paving, saving a great deal of time and labour. |
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| ASP support pads are available
from 35mm to 220mm high, and Wallbarn can also offer
smaller adjustable supports at 22-30mm and 28-37mm
in the form of our new Megapads. Please see our Megapad
page for more details. |
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More roof and balcony designs incorporate a completely flat upper surface in order to utilise them more effectively as leisure areas. More attractive paving with spirit-level-flat finishes can be achieved using a much larger variety of different stone and slab shapes using our ASP supports.
Useful, practical areas can be created on decks for leisure or services and maintenance which would have previously been left as exposed waterproofing membranes. Not only does this help protect potentially vulnerable areas, but it increases the yield of the building footprint. |
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Since this is a suspended system, the slabs can simply be lifted up should the roof deck need to be inspected for damage or leaks.
There is also the opportunity to hide unsightly objects such as cables, water pipes and drainage outlets underneath the paving slabs, which could be lifted even just to access items such as hidden electric points or water taps on a regular basis if required. |
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| The rainwater runs between and under the slabs and can be collected in small water storage tanks placed in the cavity where roof gardens or planters are present. This helps the SUDS design concept (although this will lead to much greater weight on the roof of course). |
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These robust support pads can withstand concentrated loads of 400kg each, and the 200mm diameter base plate allows the weight to be evenly spread to avoid point loading onto the deck beneath.
The supports are available in fixed heights of 25mm and 35mm, and in adjustable heights sizes ranging from 35mm up to 220mm. |
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| EDGES, CORNERS AND END OF RUNS |
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| Paving up to walls and around corners and particular details can be achieved with two additional steps: |
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1. Cut the base plate with a saw into a semi-circle shape, taking care not to cut into the central core which
houses the stem. Slide the base plate up to the wall or parapet. |
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2. Remove two of the positioning lugs so that the support can be slid beneath the inside edge of the slab. The
paving slab will sit on the support with its edge supported by half of the headpiece, and be butted up to the
wall. The outer edge of the headpiece will be in line with the (now cut) base plate. |
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3. Lay support pads into the corners of the slabs as normal and pave out from the wall, adjusting the heights
where necessary. |
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Alternatively a border edge of washed pebbles can be installed around the edge of the paving up to the wall or parapet. This is a design favoured by many installers and can be useful around details where direct access is to be discouraged, such as delicate plant or exposed ledges. |
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| SLOPE CORRECTORS |
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| And with the new base level slope corrector, contractors can be assured of completely flat, stable paving. |
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These wedge shaped levellers clip into the base plate and ensure the slabs do not rock or tilt as the slope is corrected at the bottom, so the force of gravity is still going directly vertical. Therefore the top of the pad is totally flat. This eliminates the often time consuming process of snapping levelling shims into quadrants and trying to get the levels correct. |
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They are available in 3 sizes;
1% (1 in 100 slope , 0.57 °) ;
2% (1 in 50 slope, 1.11 °)
and
3% (1 in 33 slope , 1.71 °) |
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| Please note these slope correctors are available for support pads 50-70mm and higher |
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| HEAD PIECES |
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| Wallbarn can supply a number of headpieces for the ASP range, including: |
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Also available are lugs for timber joist, used for fixing suspended timber decking. Please see our page marked support pads for timber decking for further details. |
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SHIMS
A plastic 3mm shim can also be placed on top of these support pads for additional adjustment or settlement, should this be required, although most adjustment is done by way of the stem and the slope correctors. |
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T E C H N I C A L D A T A |
| Code |
Support height |
Head diameter |
Base plate diameter |
Standard lug width |
Lug height |
Weight tolerance |
Slope corrector? |
| ASP25F |
25mm fixed |
120mm |
208mm |
2.2mm |
18.5mm |
400kg |
No |
| ASP35F |
35mm fixed |
120mm |
200mm |
2.2mm |
18.5mm |
400kg |
Yes |
| MEG22 |
22-30mm |
150mm |
150mm |
No lugs |
No lugs |
800kg |
No |
| MEG28 |
28-37mm |
150mm |
150mm |
No lugs |
No lugs |
800kg |
No |
| ASP35 |
35-50mm |
120mm |
208mm |
2.2mm |
18.5mm |
400kg |
No |
| ASP50 |
50-70mm |
120mm |
200mm |
2.2mm |
18.5mm |
400kg |
Yes |
| ASP65 |
65-100mm |
120mm |
200mm |
2.2mm |
18.5mm |
400kg |
Yes |
| ASP95 |
95-130mm |
120mm |
200mm |
2.2mm |
18.5mm |
400kg |
Yes |
| ASP125 |
125-160mm |
120mm |
200mm |
2.2mm |
18.5mm |
400kg |
Yes |
| ASP155 |
155-190mm |
120mm |
200mm |
2.2mm |
18.5mm |
400kg |
Yes |
| ASP185 |
185-220mm |
120mm |
200mm |
2.2mm |
18.5mm |
400kg |
Yes |
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