RTH: anybody knows about fixing leaks and damage in a glued skin trailer body?

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e9999

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may buy a trailer very shortly. It has some problems. There are leaks in the roof (at vent?) that show on the inside, with apparent damage to the board under the skin (this is a Carson, so likely not the best materials. I suppose the leaks could conceivably be eliminated with ample use of caulking, rubber paint and the like on the outside, but what about the damage to the wood underlayment? Which I think is probably OSB. It appears to be damaged and even maybe rotten in some leaky places that I can see.
What I can see on the outside is a smooth Alum (or plastic?) white skin with no screws or rivets visible and only two vertical seams on the side. It appears to be glued. On the inside I see metal ribs that are innermost, then a white covering of sorts -likely vinyl, likely not Al- and under that what seems to be some sort of wood sheet, presumably sandwiched and possibly glued between the 2 outermost layers.

So main question: How difficult is it to repair wood damage under a glued skin? Nightmare?
Could I pump some strengthening compound under the skin without removing it? Peel it off? General thoughts about dealing with this type of construction?
Avoid at all cost?
TIA


added: well, I talked to the manufacturer. According to the person I got, it is very difficult to deal with glued skin. Likely the whole panel(s) would have to come off and it's a major job. He basically said to fix the leaks and not try to fix the wood. I take that to mean that the latter does not play much of a role in the strength of the body.
Sounds right?
 
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Two thoughts come to mind here.

You talk about pushing some type of glue/adhesive in the gap. Could you use spray foam? The non expanding one might work best. The foam does act like an adhesive when dried IIRC.

I would try to stop any mold/rot round the vent area then look at making it water tight at the roof. You could then use a 1/4 or 3/8 plywood piece and cut out a hole for your vent. Then glue it over the damaged area to strengthen the area without loosing much head room.

Just some ideas with out seeing any pictures.
 

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