DIY Home Improvement, Remodeling & Repair Forum

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chr1s 05-24-2011 02:48 PM

Hi there,

Looked around forever and cant seem to get a satisfying answer so here goes.

I have a large concrete slab that I am wanting to Deck over, it used to be a garage base. It slopes down in total from top to bottom around 20cm.

I have read about installing posts set in concrete (if laying over soil) to support the framework but as this is over concrete can someone please tell me the best way to slightly raise/support the deck frame at one end. Can I simply lay some breeze blocks/bricks for the joists/frame to rest on. The deck will be 3.6m square so will the weight simple hold the decking in place?

If I have missed out any info you may need to answer my question properly then just ask.

Thanks in advance,


jnacc 08-20-2011 05:11 AM

We would put a 24x24x3.5 cottage pad down on the concrete, build up your height with cinder block, cut the last block to the height you want, then fill in the blocks with concrete mix. paverdeck.

Patiosclotures 09-27-2011 12:38 AM

I agree with you and your ideas. And I suggest you that you should do your own way.

Roque Valente 01-02-2012 04:37 AM

how to build deck
4 Attachment(s)
Maybe this can be of any help, it has a video on similar questions as you have and tells you step by step on how to install your decking:

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