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Unread 06-15-2020, 04:39 PM   #1
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Join Date: Oct 2017
Location: North Texas
Posts: 920
Gluing hardwood planks directly to slab?

Just learned that one of my colleagues is having hardwood floors installed directly to their slab on grade foundation. This just doesn't seem right to me, does it? I see no vapor retarder, just the bare slab (with some typical hairline cracks) onto which the installer is applying an adhesive with a notched trowel and then sticking the planks on top.

I thought a quality install would include vapor management and possible a subfloor/sleepers on top of a slab before the finished material goes on. Or am I wrong here? Just curious if this is an accepted practice.
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