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SanSabin8716 Oct 2016 10:18Dear forum members,
We will be receiving a prefabricated house at the end of the year. The floor of the unfinished attic will remain open, meaning the ceiling joist structure will be visible and not yet walkable.
We would like to make the attic floor walkable by installing cross battens and then laying floorboards on top, so that we can store a few items up there.
I hope someone here has experience with this and can advise me on the spacing for the battens and the thickness of the floorboards needed to ensure the floor is safely walkable.
Thank you in advance for all your responses.
We will be receiving a prefabricated house at the end of the year. The floor of the unfinished attic will remain open, meaning the ceiling joist structure will be visible and not yet walkable.
We would like to make the attic floor walkable by installing cross battens and then laying floorboards on top, so that we can store a few items up there.
I hope someone here has experience with this and can advise me on the spacing for the battens and the thickness of the floorboards needed to ensure the floor is safely walkable.
Thank you in advance for all your responses.
K
kkk27272917 Oct 2016 08:36I would use 32-35mm (1.3-1.4 inches) OSB boards with tongue and groove as the surface layer. Battens can then be omitted.
kkk272729 schrieb:
I would use 32-35mm OSB panels with tongue and groove as the surface. Battens can then be omitted.Otherwise, the material will start to rot. Either the area under the OSB panel needs to be ventilated to allow moisture to escape, or you should use tongue and groove boards.
A
alter002917 Oct 2016 10:35Musketier schrieb:
Either there must be ventilation beneath the OSB board to allow moisture to escape, or you use tongue and groove boards. Can I be sure that nothing will mold with tongue and groove boards? I was told it’s best to store the boards upright and wait until I actually need the space before installing the wood (or OSB boards). The insulation and vapor barrier will be placed beneath these floorboards or panels.
The problem is that the OSB boards themselves act as a vapor barrier, meaning that any rising moisture cannot pass through but stays underneath. If the moisture also cannot circulate away sideways, it remains in the insulation and mold starts to develop.
Tongue and groove boards have the advantage that the wood does not act as a vapor barrier, allowing the moisture to pass through.
To be on the safe side, we installed a counter batten and laid tongue and groove boards.
Tongue and groove boards have the advantage that the wood does not act as a vapor barrier, allowing the moisture to pass through.
To be on the safe side, we installed a counter batten and laid tongue and groove boards.
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