Bouncy floorboards and no subfloor


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Old 05-25-07, 12:33 AM
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Question Bouncy floorboards and no subfloor

I'm looking for some suggestions on securing some of the oak hardwood floorboards that are bowed upwards and bouncy. The house is over 100 years old and there is no subfloor. The floorboards are in good shape (other than not being flat) and are about 3/4-1 " above the joist. This is only affecting an area of about 5' square and is more toward the center of the room which is 14' x 27'. The rest of the boards are pretty solid. Any suggestions?
 
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Old 05-25-07, 05:22 AM
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If you have access to the joists, you could cross brace them to stiffen the floor system.
 
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Old 05-25-07, 11:10 AM
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Thank you for the suggestion, but would that help the floorboards that are above the joist (3/4-1") lay (and stay) back down? There is no subfloor to secure them to.
 
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Old 05-25-07, 09:35 PM
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So there's a space between the floorboards and the joists?
 
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Old 05-26-07, 06:21 AM
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Yes , in that section of the floor. It's about a 1" deflection upward. You can see from below as someone walks across that area that the boards flatten back to the joist. I think that this would be way too much of a space to shim. Muchless that would keep the boards more bowed and cause a slight hump.
 
 

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