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Wooden decking over uneven concrete 3.2m x 2.1m

Discussion in 'In the Garden' started by steveb77, 3 Apr 2012.

  1. steveb77

    steveb77

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    Location:
    Surrey
    Country:
    United Kingdom
    I would like to install some decking over an unsightly concrete slab in my back garden.
    The slab is made up of smaller sections and is uneven with a slight gradient.
    I have lots of spare paving slabs or bricks I can use as piers.

    What is the easiest way to construct the frame?
    Would I need to fix the slabs/bricks to the concrete with mortar?
    Would I need to fix the frame to the bricks/slabs?

    Any help would be much apprciated.

    Many thanks.
     
  2. steveb77

    steveb77

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    Here is a pic of the area:

     
  3. Arthur2shedsJackson

    Arthur2shedsJackson

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    I personally don't like laying on previous surfaces such as this, because there may still be some movement ( You don't know how good the base under the paving is.

    However, if you are going ahead, my advice would be to find the highest point of the existing and shim the frame up to level it to that point.

    There should be no need to fix the frame down to the concrete/paving slabs, as the weight of the deck should keep it in place.

    As for the best way to constuct the frame, see the link below
    http://www.diydeals.com/Assemblyinstructions.htm

    and for fixings

    http://www.awin1.com/awclick.php?aw...-tite-joist-screw-6-5-x-80mm-pack-of-20/95586

    http://redirect.diynot.com/?id=2115...arden/decking-advice-needed-with-pics.315432/

    You will need 120mm long, I would suggest, if you are using 4" x 2" or 6" x 2" joists.
     
  4. DIYnot Local

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