I live in central NC in a house with a crawlspace. The house had 400 sq ft of white oak flooring installed when it was built in 2003. Prior to moving in, I had the downstairs all converted to white oak flooring (about 870 sq ft). The existing hardwood floors were left untouched (but were sanded, stained, and a finish added).
After two years, I am noticing that the new flooring looks and feels different. I believe it could be characterized as cupping. I run my hand over the flooring and it feels like it has valleys and ridges. It is higher between adjacent boards. It is noticeable in the sunlight at the right angle.
However, the original flooring of the house is not experiencing this problem.
The new flooring was acclimated (at least for 2-3 days) in the house. There was a moisture barrier installed (Aquabar B moisture vapor barrier per the quote).
My crawlspace moisture readings have been around 16-20% during the last 3 months. My internal temperature is around 79degF, with a humidity level of ~50%.
Any idea what could be going on? Will it return back to normal in the Winter?