Oh boy...if you're sure it's not from the water system on the TT you're right to be concerned!
- was the overhead vent closed all the way? Could the wind have brought some moisture in?
- I'm not familiar with that model, but my old TT had a leak from one of the outdoor marker lights...water came in, went down the wall and saturated the floor. By the time I saw 'water' it was too late...damage was done! Check seals top to bottom....a good caulk job may be in order...((and on inspection, the seal around the light looked good until I took it apart and saw where the water was working its way into the trailer))
- I also experienced a leak from underneath, caused by spray while driving. Possible?? or were you parked the whole time it rained?
- If you think it's the roof, check for tears...that would be the obvious...then check the whole perimeter of the roof. No guarantee the water is coming in from directly above the bathroom...it could be coming in from one area, travelling the length of the trailer to an area it can get through.
Good luck - I feel for you...mysterious leaks are NOT FUN.
3 kids and Buddy the Dog;)
2010 JayFeather 23K
05 GMC Envoy XL