Q: Our solid oak floors (installed in March 2006) are cupping. We were told to run a dehumidifier which we are doing, but we can’t see or feel any difference.
A: I would purchase a hygrometer from a local electronics store which can tell you what the relative humidity is in the room, or even at floor level. Moisture is the only cause of your problem. Identifying the source can be more difficult. A crawl space under the floor? A leak in the roof or a water pipe? Excess humidity? Wet mopping a floor during cleaning?