Hardwood over a slab: Is 6 mil plastic or roofing felt best?
Hardwood over a slab: Is 6 mil plastic or roofing felt best? Or is there a better idea?
All the info I have found says felt, glued down with mastic is best, or 6 mil plastic. Both go under the subfloor plywood.
I have done 6 mil under plywood, 15 years ago. I just wondered if that approach still is relevant.
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