What to Do About Runaway Floorboards

Danny and Joe welcome callers’ questions each week on the Today’s Homeowner Radio Show.

Here’s a question from our Sept. 14 broadcast:

Billie in Texas says, “We have an older home with beautiful oak hardwood floors. They are buckling throughout the house.

We have 12-mm plastic sheet under the entire house to create a moisture barrier, yet the floors continue to buckle. In some parts of the house, the floors are actually tripping hazards they buckle so much.

Any suggestions on how to stop the buckling and then repair the floor?”

We tell Billie to place some hygrometers around the house. The buckling is no doubt a moisture problem and the humidity level should be no higher than 50 percent. 

If moisture is being pumped through the air conditioner, then she should check with the installer to see they can make any adjustments. 

If the moisture is migrating through the crawlspace, then Billie needs to put at least 6-mil plastic over the dirt floor in her crawlspace.

Listen to the embedded audio clip above for the answer!
Read the blog from the Sept. 14 show and listen to the full broadcast here.


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