We have a new wood floor installed in a new addition, over a newly built crawl space. The floor was installed during a very wet period of the summer (historic floods took place near that time). The floor was flat after finishing. We covered it with drop cloths for a few weeks while trim work was done. When we removed the drop cloths, the floors had cupped. There had also been a problem with drainage that the builder had fixed, but not before it flooded the new crawl space. Now we are stumped – the job is done, we are about to have it inspected, and the builder is saying to wait until winter for the floor to flatten out with the heat. What if it doesn’t? What if it still needs to be resanded and refinished? Whose responsibility is this? We are reluctant to move into the space before this issue is resolved, but how long can/should we wait?