I have a second floor in a multifamily building with 1.5 inch of
gypcrete over 3/4 OSB. Some parts will be carpeted.
Should there be a vapor barrier or some type of priming over the
gypcrete in order to install carpet over it?
apartments like that, we never did. The gypcrete wasn't in contact with
dirt, so once it was solid, no place to wick moisture from. I think the
'garden apartment' level, on slab, hade vapor barrier under the slab, IIRC.
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