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Loft boarding with 400mm insulation

Discussion in 'Floors, Stairs and Lofts' started by nacnudus, 20 Sep 2021.

  1. nacnudus

    nacnudus

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    Is it possible to board a loft that has 400mm of insulation? The joists are 120mm high.

    LoftZone would raise the boards to 404mm, leaving only a 4mm air gap instead of 50mm.

    Loft Leg XL would raise it to 425mm, leaving only a 25mm air gap.

    Could I put a block of wood between the joists and the LoftZone/Leg? Or should I lay down whole beams crossways?

    Thanks.
     
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  3. RandomGrinch

    RandomGrinch

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    Hi,
    Theres an interesting thread here:
    https://www.diynot.com/diy/threads/...ed-between-loft-insulation-and-boards.161733/
    suggesting why an air gap is needed.
    I personally have the Loftzone storefloor and found it really straightforward and quick to install. But I have nowhere near 400mm of insulation!
    Blocks to lift up the legs would be quite unstable. I think cross beams would probably do the job better.
     
    Last edited: 21 Sep 2021
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