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-   -   termites (http://www.houserepairtalk.com/f13/termites-8507/)

gamallo 01-28-2010 08:06 PM

termites
 
Would termite damage cause the subfloor under my wood floors to buckle? I had wood flooring installed over a wood subfloor and now the wood is buckling in the center of the room it looks like a huge bubble. I have pulled up a piece of the wood and see that the subfloor is buckling. could this be caused by termites? I had the termite guy in and he says that there are no live termites. Would old termite damage have caused the buckling in my subfloor?

Wuzzat? 01-28-2010 08:13 PM

Quote:

Originally Posted by gamallo (Post 39717)
in the center of the room it looks like a huge bubble.
he says that there are no live termites.
Would old termite damage have caused the buckling in my subfloor?

If you can easily poke a screwdriver into the wood it could be old termite damage. Also if you can peel away huge splinters with your hands.

I assume there is a support post
Lally column - Wikipedia, the free encyclopedia
in the center of this bubble, and the bubble is like an upside down bowl when viewed from above? If so, what you describe shouldn't be possible. :(

If the bubble is the other way round the joists have weakened at the point of maximum bending moment {bottom graph in the link below}
Google Image Result for http://www.mdsolids.com/screenshots/beamdiagram.gif

Can you post pictures?

gamallo 01-28-2010 08:34 PM

thanks. I'll try to post pics.

Wuzzat? 01-28-2010 08:42 PM

And check that opposite foundation walls are still parallel, at top and bottom.

Bud Cline 01-28-2010 08:49 PM

If you have one big dome forming in the center it could be the wood floor was installed incorrectly. Who installed it and when?:) What region of the country are you in?:)

gamallo 01-29-2010 10:28 AM

I live in New Orleans. I am suspecting bad installation, because the bubble is just in one spot. I would expect the floor to cave in if the subfloor or joists below it were termite damaged, I don't think it would buckle.

Wuzzat? 01-29-2010 03:36 PM

Quote:

Originally Posted by gamallo (Post 39759)
I live in New Orleans. I am suspecting bad installation, because the bubble is just in one spot. I would expect the floor to cave in if the subfloor or joists below it were termite damaged, I don't think it would buckle.

Without a photo, I now have to agree with Mr. Cline.

I guess if you stand in the middle of the bubble and it drops some in height, this is add'tl confirmation.

Bud Cline 01-29-2010 05:02 PM

Who installed the floor?
You, or a flooring installer?
How long ago?
Were the products acclimated to the surroundings for a few days before they were installed?

There is still a lot of unanswered questions.:)

I'm betting the floor is crowded against the walls in too many places. Humidity is always high as far as I know in New Orleans and that is enough moisture to cause some issues with a floor expanding. If there is no place for the floor to expand to, something's gotta give. Usually the give results in exactly what you apparently have - a bubble, hump, tent.:)

Wuzzat? 01-29-2010 06:25 PM

Quote:

Originally Posted by gamallo (Post 39759)
. . .the bubble. . .

What is the diameter and height of the bubble?

From this I should be able to tell you how much the material expanded with moisture - for wood, 3% is probably a reasonable value.


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