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Ian33
Member
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# Posted: 10 Feb 2021 05:18pm
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Is using vapor barrier on insulated cabin floor better than using adhesive when putting down subfloor?
Thanks
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gcrank1
Member
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# Posted: 10 Feb 2021 07:40pm - Edited by: gcrank1
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Vapor barrier and subfloor adhesive, hmmm.
There needs to be a vapor barrier on the warm side before the insulation if insulated, this applies to floor, walls and ceiling/roof.
Is what you are really getting at is how do you make subfloor to joist adhesive work if you put a vapor barrier over the joists?
This is not a case where one is better than another, they are two different things for two different purposes.
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Brettny
Member
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# Posted: 11 Feb 2021 06:16am
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You only need vapor barrier if your useing batt insulation. Use foam and you dont need a vapor barrier and the mice wont have a field day in it.
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toyota_mdt_tech
Member
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# Posted: 11 Feb 2021 06:27pm
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In my area, we use a black vapor barrier over the soil/ground and on the underside of the floor, a breathable barrier such as tyvek etc.
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xinull
Member
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# Posted: 17 Feb 2021 10:25pm
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@toyota_mdt_tech, the vapor barrier you put over the soil/ground, do you put gravel on top? if so, how much, just enough to hide the plastic?
I was thinking of doing just that to prevent moisture from rising under the cabin, but i've already place a layer of gravel down and didn't really want to have to dig it out, my plan was just to add enough gravel on top of the plastic to hide/hold it in place
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