About 3 yrs ago I bought a 61 yr-old home. Shortly after moving in when walking barefoot on the floor, I noticed that the hardwoods were a little 'wavy' near the front door.
Last October 2003, the floors buckled up about 2 inches in a matter of a few weeks. I installed gutters and gutter helmet to minimize water running under my home in the crawl space. I then re-sided the home and discovered a leak which I thought fixed the problem. The floor relaxed a little then popped back up higher than before. The moisture meter reads '21' and the floor guy thinks water standing under my pier & beam home is the culprit. I then hired a guy to install a drain under my home to drain off excess water. He tells me that there isn't any water standing under my home. I am totally clue-less as to why my floors are buckling....
It may provide a clue to know that the previous seller made some kind of repair to the hardwoods and subfloor. I know this because when we ripped up a few pieces of hardwood, you could see where the original plywood subfloor ends and the new begins.
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