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Summerhouse - allowing for future replacement floor sheets?

Discussion in 'Building' started by lct, 28 Dec 2020.

  1. lct

    lct

    Joined:
    25 Nov 2009
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    Location:
    Buckinghamshire
    Country:
    United Kingdom
    Question is about how to lay the floor sheets of a timber summerhouse I am starting to design and whether to 'trap' them below the stud walls.

    One thing I don't like with all the designs I see is that the perimeter stud walls are built on top of the floor sheet. In my mind I prefer the future option of being able to remove the complete floor sheets to allow inspection of the insulation and ground below. Plus it helps if I can get the walls and roof up as soon as possible and then fall back on the insulation - could even use some temporary floor sheets during the build where I am sure they will get wet and swap them out at the end.

    The disadvantages of the 'internal floor sheets':
    • It's probably easy to end up with some gaps between edge of floor sheet and wall.
    • The perimeter of the floor is not supported - at least not with 2"x4" stud walls sitting on doubled up 2"x5" perimeter beams. I would either have to add a third perimeter beam on all sides (cost), or nail in some CLS all around between the joists, which is a lot of short pieces.
    • Harder to drop in solid insulation if using the nailed on edge support.
    Sketch below shows what I am thinking. One on the right is the 'traditional' design i see everywhere. On the left is what I am considering. Please tell me why I am wrong and why I should stick with the traditional - I am pretty sure it will be the easiest build.
    • upload_2020-12-28_18-47-43.png
     

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