Ok. 62 tradewind. I have been chasing leaks all week. Sealed from outside with sikaflex 221 around windows seams etc. Do or can AS sweat enough to create condensation to mimic a leak???? I have opened up behind the fiberglass compartment in the rear and exposed the back skin. I it appears it has black rubber coating? it looks like it sweats and runs down the back of the inside. The temps today were very humind and now it has dropped 15 degrees and raining.. Perfect time to look for leaks. (Right!) However windows and skin appears to be condensating enough to drip off glass etc.

Other question about construction of trailer. does the subfloor go under the walls? or does the floor stop just before the wall. Any leak would run down and sit on top of wood?