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Shed base/platform - mould concerns

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  1. #1
    Apprentice (new member)
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    Jun 2020
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    Default Shed base/platform - mould concerns

    Hi everyone,

    I've got a tiny back yard in a house I've just moved into, so I'm just putting up a temporary metal shed to store most of my tools until I get the chance to build a proper one. Whole area is unevenly paved so I've built a wood platform to put the thing on to keep things level. The platform is maybe 10mm wider on each side than the shed itself, which means water ingress is an issue. If water seeps into the MDF/plywood substrate I'm going to get mould. Unfortunately I had a friend have this same issue recently.

    Does anyone know a good way to seal this? Should I just cover the whole thing in epoxy or paint? Or will flashing be necessary?

    Any help would be much appreciated!


    shed-sketch.jpg
    shed-sketch-overhang.jpg

  2. #2
    Seasoned DIY droog's Avatar
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    Sep 2005
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    Bendigo
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    58
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    Default

    Have the floor cut in, so the shed walls sit in a rebate on the frame.
    Also install metal or pvc flashing in the rebate to keep water from the flooring, however some will still get in as you cannot run run the flashing higher up the wall at the doorways.

    A timber platform will always have this issue with cheap sheds, solution is non timber floor sheet or concrete slab.

  3. #3
    Golden Member
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    Oct 2017
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    Melbourne - Yarra Ranges
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    what size is it at the base?

    Could throw down some pavers on a compacted sand base. Is temporary enough to easily rip up.
    bead of silicone around the base should keep most of the water out for this temp arrangement.

  4. #4
    1K Club Member havabeer's Avatar
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    Nov 2011
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    nsw
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    go buy a roll of damp course flashing and attach it to the inside of your shed and run it over the outside of the platform

    https://www.bunnings.com.au/plascour...ourse_p1090523
    Remember if you don't sin, then Jesus died for nothing

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