Canyon Star compartment door gets water in between door skin and insulation?

[Tetonchief]

So, I have a Canyon Star, and the compartment door over my generator (pax side right behind rear wheels below the bedroom slideout) tends to get water in it between the other skin and the insulation foam panel. I can't figure out where it comes from so I am asking if anyone else has experienced this? I am almost sure it must come from an outside source (not internal leak) as I have been parked in my daughter's driveway for nearly 2 weeks and not hooked up or using the coach. I did wash the roof and the outside of the coach. My roof seals look good. Any ideas?

["007"]

Do you have a metal frame around the fiber glass door possibly the paint has dried and cracked so water is getting behind metal frame.
The floor level trim above doors has been known to dry out also and a sealant needs to be applied on top of trim and sidewall, water can get behind the trim into compartment behind the door.