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Hardwood on concrete

Posted by Bruce M on June 29th, 1998 11:09 PM
In reply to Hardwoods on slab coming loose! by Charles A. Bissell on June 29th, 1998 03:32 PM [Go to top of thread]

Hi Charles
Unfortunately, slabs poured in the early 70's rarely had a vapor barrier installed under them, allowing moisture, however slight, to rise to the surface. With a continuous adhesive applied to the surface and a wood surface over that with a water impermiable finish (urethane?), the moisture found itself trapped. As is always the case, the moisture is winning, and in all liklihood, will eventually lift the entire floor.

Perhaps someone else may have another idea for you, but I can't think of anyway to readhere the wood to the concrete. The only correct fix I can think of is to take up the old wood floor, remove the adhesive (yuk), then put down a vapor barrier sheet designed to be impervious to moisture, then put down 2X sleepers on which you can build your new floor.


Bruce M

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