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Question:

I bought a one year old home with oak flooring. There is some cupping in a corner of one room, apparently from excess rain water from a dead valley migrating through the roof and exterior brick. The contractor has now installed new exterior step flashing which she said should eliminate penetration. One month later, we're still getting moisture readings in the affected 2 ft sq. area in the 16-20% range. She thinks it will dry out, but I'm concerned that given the time it's been there (up to a year) that rotting damage is inevitable down the road. Would you recommend repairs now (which the seller would be responsible for) or wait and see.

Answer:



Dear David

Well, if you are sure you have the roof problem licked and somene else will pay for the repair of the floor, and you can find a responsible floor contractor, who will only accept payment when his job is done and invisible, by all mean go ahead and repair the floor now. But be warned sometimes the subfloor has to dry out also (6-9%). This can be achieved if the cupped board are removed and it is has several weeks to dry out.

In the mean time keep the heat on a little higher, with no night time set backs, and heat the basement or crawl space under it well, also. If left on it's own most floors will dry out and settle flat somewhat in a few months. You should be looking for a EMC of about 6-9% in the hardwood and the subfloor, before completing the repair or just sanding. Find out the EMC in your area for indoor wood, from a wood floor mechanic or cabinet maker.

Wood generally will not rot as long as it is in the process of drying, not getting continually wet. But as long as someone else is paying for it, I would choose the first option if I were you.

If you found this information helpful, please explore the Wood Floor Doctor.com by visiting the rest of our website.

As always your Most humble servant, Joseph, the Wood Floor Doctor.

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