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idonutn0 01-22-2007 11:04 AM

New floor movement...
This weekend I started an install of 5/8 inch wood floor. There are a couple of spots where the floor sags up and down when I step on it. The flooring was laid over the cement slab and an underlay material.
What is the best way to fix this problem?
Thanks for the help.

majakdragon 01-22-2007 11:59 AM

Sounds like the concrete surface has dips in it that are deep enough that even the underlayment cannot fill adequately. The flooring boards are acting as a "bridge" over the gaps and will continue to flex up and down until the voids in the concrete are leveled out. Good luck.

Brik 01-22-2007 01:03 PM

In other words you are out of luck w/o removing the floor from that area and leveling out the concrete. This is precisely why I hate 'floating' floors. I am considering a glue down approach over my concrete in case I missed some small dips. Hopefully the glue approach will minimize the effects of the bridging if I encounter any.

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