Cupping of wood floor

[gardenia7654]

Hello. I have had a solid wood floor down for about 2 months. In the last 10 days the boards have become cupped all over. It was laid over a new concrete subfloor. The fitter says it is due to moisture levels in the room and advised us to get a dehumidifier and there is nothing they can do about it. Does this sound plausible? Is it worth getting the moisture level in the subfloor checked?
Thanks.

 

[gardenia7654]

Hi I think it was about 3 months

 

[tony1851]

Cupping of timber boards is partly a function of how they are cut from the log, and how they are seasoned. Tangentially-cut timber is more prone than radially-cut.
Probably just cheaper timber.
At three months, your floor would probably have dried out sufficiently

 

[lymmranger]

Whilst wooden floors are not my expertise.....

...if your floor was "bought and fitted" from a supplier, in other words you walked into a shop picked a floor and they supplied and fitted it for you, then I suggest you complain (your within 12months!). The fitter or the shop should have checked the moisture levels before he started. IMHO a dehumidifier isn't going to sort out "cupping" - it will now always be like that