I have a 2006 Coachmen Class C. The graphics were faded beyond repair so I decided to strip them and re-paint the fiberglass body. I had the one side completely removed (not fun) and when I got to the back corner I noticed the corner trim pulling away on the bottom. I removed the trim and started to find wet wood. It appears to have come in from the rear tail light. So I replaced the back bottom with pressure treated plywood 1/2 inch and 3/4 inch to equal the 1.25 inch thickness. Overkill and a bit heavy but it wont rot and it was a perfect fit
. I plan to put a thin aluminum diamond plate to finish it. So far so good -- BUT I also pulled off the bottom molding "L" strips off the rest of the MH body all the way around and I am finding water or wet luan under the plastic woven membrane that is tucked under the bottom trim piece. Various places and varying degrees of wet: behind the cab on the driver side (will have to replace wood here also), back corner driver side, by the MH door, and passenger side back side - rather random to think it all came in from a bad tail light. Roof looks great, cab over looks good (thank goodness). I wonder if the water just came in from the trim screws that go up into an aluminum tubing frame? I have cut away the woven plastic so everything can dry out but here is the question: Do I just let it all dry out and seal it all back up (with spray glue for the luan, eternabond and or a sealant?). Or do I leave it open to monitor if it stays dry (don't drive in rain?) or leave drain holes or vents somewhere? Other ideas/ thoughts? Any and all advice or similar stories/repairs welcome. Attached are also some pics that show the situation.