Decking wall plate

pompeyjim · Post by **pompeyjim** » Mon Jul 05, 2021 11:10 am

Going to be putting some decking over an existing concrete slab which covers the whole back of the garden from side to side. I need it to be as low as possible to keep up the privacy.

Digging out the slab would be best option but there will be tons of concrete and no rear access to garden.

Going to use 2 x 4 instead of 2 x 6 to keep it low. I know that could have some bounce so will support accordingly.

My question is, has anyone ever fitted wall plates to a garden brick wall in the way you would to a house? Not sure if it's a good idea or not, but would make it easier as I could fit a plate to 3 walls and use brackets or posts for the 4th side.

Cheers

Someone-Else · Post by **Someone-Else** » Mon Jul 05, 2021 6:56 pm

I am NOT a builder, just my opinion.
A house wall also has the remainder of the house weight on the wall, a garden wall doesn't, I would not fit a wall plate to it. My own garden wall (not built by me) collapsed some years ago for no obvious reason, lucky no one was sitting there.

Scotty001 · Post by **Scotty001** » Mon Jul 05, 2021 8:52 pm

How large is the decking area? Last year I went down the decking route (onto patio slabs) and was going to fix a wall plate, in the end I didn't bother, the shear weight of the decking 3mx3m keeps it well planted without needing to affix to any wall. it is NOT and has NOT shifted a mm and is walked on and played on several times daily

viewtopic.php?f=1&t=101310 is a link to when I did mine, the plastic risers I used to lift the frame from the ground and create the slope required for rain run off were from https://www.roofingsuperstore.co.uk/pro ... gLKjfD_BwE and were very reasonably priced compared to others. £1.54 each.

pompeyjim · Post by **pompeyjim** » Tue Jul 06, 2021 10:18 am

Someone-Else wrote: ↑Mon Jul 05, 2021 6:56 pm I am NOT a builder, just my opinion.
A house wall also has the remainder of the house weight on the wall, a garden wall doesn't, I would not fit a wall plate to it. My own garden wall (not built by me) collapsed some years ago for no obvious reason, lucky no one was sitting there.

I think you might be right!

pompeyjim · Post by **pompeyjim** » Tue Jul 06, 2021 10:22 am

Scotty001 wrote: ↑Mon Jul 05, 2021 8:52 pm How large is the decking area? Last year I went down the decking route (onto patio slabs) and was going to fix a wall plate, in the end I didn't bother, the shear weight of the decking 3mx3m keeps it well planted without needing to affix to any wall. it is NOT and has NOT shifted a mm and is walked on and played on several times daily

viewtopic.php?f=1&t=101310 is a link to when I did mine, the plastic risers I used to lift the frame from the ground and create the slope required for rain run off were from <a href="https://www.roofingsuperstore.co.uk/pro ... gLKjfD_BwE" class="skimlinks-unlinked" data-skimwords-word="https%3A%2F%2Fwww.roofingsuperstore.co.uk%2Fproduct%2Feurodec-adjustable-decking-cradle.html%3Fgclid%3DEAIaIQobChMIvvnyiKOx6wIVW-ztCh1I_guJEAQYASABEgLKjfD_BwE" data-skim-creative="500005" title="" style="">https://www.roofingsuperstore.co.uk/pro ... jfD_BwE</a> and were very reasonably priced compared to others. £1.54 each.

roughly 4m x 2m. It's not so much for fear of it moving around, it's more about keeping it low to the ground. I guess supporting it on cut down 4 x 4 posts will have the same result

Scotty001 · Post by **Scotty001** » Tue Jul 06, 2021 10:29 am

The supports I linked to will help with that too, they are fully adjustable from 2/3mm to about 20mm, you want the frame off the ground so you don't get woodrot (frame sat on a wet damp surface soaking up the water) , you also want a slope so rain water runs off the decking, it doesn't need to be a big gradiant,

PompeyJim, just spotted your username, presuming your in pompey, if it helps I found that wicks in Waterlooville was best place (price) for all deck screws, brackets and wood screws, countersink and fixings, covers was not fantastic with info on base plates for leveling the decking (they had the same plates that I linked to above but when asked if they were OK to use with wood decking they jut said try it and find out, and the cost was pretty much double) their prices for timber wasn't too great either, build base had decent prices on timber, I ordered c16 treated wood for the frame but they delivered c24

and the decking boards were also a decent price compared to covers and wickes including delivery. (delivery was on a 16wheel hiab so some access will be needed) my garden was a short way from the road side and they offloaded all the timber road side and helped me carry it to the garden.

pompeyjim · Post by **pompeyjim** » Tue Jul 06, 2021 12:51 pm

Scotty001 wrote: ↑Tue Jul 06, 2021 10:29 am The supports I linked to will help with that too, they are fully adjustable from 2/3mm to about 20mm, you want the frame off the ground so you don't get woodrot (frame sat on a wet damp surface soaking up the water) , you also want a slope so rain water runs off the decking, it doesn't need to be a big gradiant,

PompeyJim, just spotted your username, presuming your in pompey, if it helps I found that wicks in Waterlooville was best place (price) for all deck screws, brackets and wood screws, countersink and fixings, covers was not fantastic with info on base plates for leveling the decking (they had the same plates that I linked to above but when asked if they were OK to use with wood decking they jut said try it and find out, and the cost was pretty much double) their prices for timber wasn't too great either, build base had decent prices on timber, I ordered c16 treated wood for the frame but they delivered c24 and the decking boards were also a decent price compared to covers and <a href="http://www.wickes.co.uk" class="skimwords-link" target="_blank" data-skimwords-id="12589" data-skimwords-word="Wickes" data-group-id="0" data-skim-creative="300001" title="" occurrence="1" data-skim-node-id="904:PompeyJim,justspotte_1" style="">wickes</a> including delivery. (delivery was on a 16wheel hiab so some access will be needed) my garden was a short way from the road side and they offloaded all the timber road side and helped me carry it to the garden.

Cheers Scottie. Yes in pompey! I know wickes prices aren't great. I bought some fence posts in there about a month ago for 18 quid and they are now 23! I'll check out the brackets. Already got all the timber for the frame and all the screws.

wine~o · Post by **wine~o** » Tue Jul 06, 2021 2:17 pm

pompeyjim wrote: ↑Mon Jul 05, 2021 11:10 am Going to be putting some decking over an existing concrete slab which covers the whole back of the garden from side to side.

Cheers

Just to be clear if the decking is covering more than 25% of the outdoor space you'll need planning permission. (I think 25% may be 33%, a long time since I built a deck.)

wine~o · Post by **wine~o** » Tue Jul 06, 2021 2:20 pm

Just checked, It's 50%

The decking is no more than 30cm above the ground
Together with other extensions, outbuildings etc, the decking or platforms cover no more than 50 per cent of the garden area.
None of the decking or platform is on land forward of a wall forming the principal elevation.