re: .

roll down two layers of 15 pound roof felt. Then a foam noise barrier. Then 5/8 or 3/4 plywood screwed in. Then 3/4 inch hardwood NAILED. you won't be disappointed..anything else is a crap shoot in my opinion.

I've glued, sanded and finished 20-30k sq ft of white oak on slab on one job alone. It's no big deal.

Should've been more specific. All wood floors will shrink and swell with temperature change. That's why on a lot of floors when it's hot you'll see a lot of gaps and when it's cold it will look tight. This is from moisture/ condensation in the air. Oak is a super solid wood that doesn't shift with climate change good. I've seen upwards of 50+ houses that Sheetrock and baseboard have been replaced from the floor trying to swell and it has nowhere to go so it starts pushing against the wall.

If you want white oak, go with 3/4 Naildown and put plywood and #15 black felt first.

I've been a liscenced, bonded, and insured hardwood flooring company for over a decade. Just offering advice my friend.

finished 20-30k sq ft of white oak on slab on one job alone. It's no big deal.

Me as well, multiple times. It can def be done. But 1 in every 3 or 4 oak floors that have been glued to concrete will have issues. As expensive as they are, is it really worth trying? Why not just nail it down and know for certain it's good for more than your lifetime?

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Loba

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I agree with this. Fantastic product line.