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dlewis

11:26AM | 09/14/03
Member Since: 09/13/03
3 lifetime posts
Bvflooring
I laid 5 inch red oak planks on a 1/2 subfloor over a basement (not slab) and had them finished with a water based poly. They were installed in April. After a long, humid Maryland summer with no A/C, I notice that the floor is bowed up at EVERY seam. My questions are:
Is it permanent?
If so, what can I do to relevel the floor?
What caused it (I can only guess)?
What could have prevented it?

Thanks for all of your help, folks.

KD Fisher

04:11PM | 09/14/03
Member Since: 03/17/03
49 lifetime posts
DL:

What you're seeing is called cupping. It's caused by moisture from below. I would suspect the basement is very moist. Do you have any dehumidifier systems going? This will keep the Rh level down and should take care of the problem. It may take quite awhile..be patient.

Ken Fisher
South Florida

yea..I know..what the devil does someone know about basements in Florida? I spent a week doing work in the Philly area in late June and the amount of moisture in the new development(basements) I was working in was amaizing. We had two units going full blast. The other neighbors are probably now seeing what you're dealing with because their installers didn't have a clue. All they bragged about was how slow I was...LOL..and how fast they could slam in 1,000 sf. I'll bet they're worried now.

Hardwood Installer.Com

dlewis

06:21PM | 09/14/03
Member Since: 09/13/03
3 lifetime posts
Thanks for the info. I have an old dehumidifier running and this summer has been VERY wet. Are you fairly confident that the cupping will flatten out if I can relieve the area of moisture? Thanks again.

CLMartin

05:00PM | 02/10/07
Member Since: 02/09/07
1 lifetime posts
I have hard wood floors that warped as a result of a leaking steam radiator. The leak has been fixed and the floor dried, but the boards are still raised. Is there a way to reduce the warp without sanding them? The individual planks are only about 1.25" wide and 0.25" thick.
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