I have a modular home that I'm in litigation regarding water problems. The house wasn't "closed in" and we had rain (New Hampshire). The water came in through the windows and electrical outlets (eg. range hood, fire detector...etc.).
The dealer "rep" has "finished" the house and is making it like there is no problem.
I videotaped frozen insulation (frozen to drywall) as well as water.
Because you can't "see" any damage outwardly it looks ok. However, I think the drywall/insulation needs to be replaced.