Hi everyone, looking after some help with decking. We have a split level home with an outdoot section that was I believe used sit a spa. The tiling looked horrible, was raised in some parts, so I wanted to rip it up curious to see what was underneath so I could look at options. It appears to be big sections of sandstone, which they tiled over. The section is boxed in with brickwork. The high side of the brickword does seem very sturdy, though does look rough
This would be a great spot for a deck. Area is approx 3.5 x 3.5 with a view to extend out further in the future.
I've read a heap of the low level deck posts here, which have been awesome.
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@aaronwier is that sandstone of just disintegrated old concrete?
This webpage should answer most of your questions https://www.bunnings.com.au/diy-advice/outdoor/decking/how-to-build-a-deck?gclsrc=aw.ds&&gclid=Cj0KC...
I have never built a deck on concrete, but there are a range of low profile mounting stirrups available at Bunnings.
You may want to chemically anchour some Reo bar into the slab approx 200mm deep instead of using 100mm dynabolt for them though.
That looks like the powdery concrete which is just going to crack and turn into dust when you drill into it though.
I hope others with more knowledge will join in soon for you.
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The surface is sandy but hard. Can be broken up pretty easily though.
An old handyman DIY technique for a small slab was to create a boxed-in area with bricks & then just fill it, or sometimes just skim coat over rubble, with a sand & cement mix. Quite serviceable but not overly strong.
I'm thinking this could be good situation for the Good Times decking system.
You don't have to use their decking but the adjustable supports and sub-frames could make it a lot easier & certainly easier to add on to further down the track.
Thanks @Adam_W i think you are spot on. It is indeed boxed in using bricks. I’ll have a bit of a dig anyhow and see how far it goes down.
Are thinking of putting a spa here so might end up being concrete slab with decking around the spa and extended out too.
Will keep you all posted!