moisture

took cover off fifth wheel on weekend and found that a critter had been under during the winter and made a mess of vent stack and antennae wire. Went under trailer to see if they had been anywhere else. Thankfully nothing showed(outside or in). Did notice that the chlorplast material under trailer seemed to have a sag or two. Lifted and water came out the sides. After consulting dealer, since they were booked full for a week, that i drop the chloroplast and remove the insulation to at least get rid of moisture. Dropped the liner and only insulation is aluminized bubble wrap laying directly on liner, over 6" of air above till floor. Moisture is only between liner and wrap, nothing on top of wrap. No signs of moisture anywhere inside. Still going to get dealer to check it all out but thought in my head is could it be condensation? Moistly summer camping with AC full tilt but some spring/fall with heater going pretty good at night. Box temperature difference when compared to outside temps could be upto 30F. Unit is a 3 year old Sunnybrook Raven 2980BH. Any thoughts?