Yeah, there's no recourse after all these years. I can't even remember the name of the place I bought it! I lived in it the first year I bought it, then had it towed into storage where it has been till I brought it home last week.
Well, it's a "project" whether I wanted one or not. I had planned on reupholstery, carpet, shades, retopping the counters and tables, new bed and such. Now, I will have to add reskinning the inside and probably a new stove, refer and who knows what else in addition to having the roof all sealed up.
I will say this - thank goodness these are all aluminum frames. The inside once you get down to the bones looks fine. In fact, it looks new. I am hoping I don't have to replace any of the floor, which is ONE piece of OSB. So far, it looks pretty good. I think if it had been plywood it would have rotted, but the OSB looks stained in areas, but remains firm.
And of course, the damage is my own fault for neglecting this thing for 10 years. Had I been on the ball, I would have inspected it throughly ever couple years and probably could have detected this leaking a long time ago.