New answers tagged anchor
I did this fully floating. No screws. Hardwood on top also floating. All is fine so far. I did not like the idea of punching multiple holes in the vapor barrier with all those screws.
I glued 1 inch thick rigid foam board onto the concrete floor which I had previously treated with a 1/16 inch coating of xyprex moisture proofing. Then I glued OSB sheets to the foam board. In both cases I used P-400 foam board glue, which worked very well. This subfloor will support a variety of laminate products in future when I want to have a more ...
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