Went through something like this only no nearly as destroyed. Replaced the door side wall and new ceiling throughout. I wouldn't have nerve to tackle what you have. Hope you don't tire out before your finished. I'm sure you will really appreciate it when done. It eventually becomes a Labor of Love. Hang in there Jack

jjharris - Are you finding any pinholes in the outer wall? I have an
'84 that I've been rebuilding that the corrosion has eaten through the aluminum. I still haven't decided on a solution for this; was wondering if you are seeing this and what your solution is.

I'm putting on a new roof, as well, but will use EDMP, there.

Thx,
Susan

Possible you will have to replace with new aluminum for your exterior walls. Plan B purchase two part epoxy at Walmart or any auto store. Put the Bondo on the interior side of the aluminum. This will seal up holes or pinpoint holes that you can't even see. We did this on our 1990 25ft. Classic HiLo. No holes were visible. Never had a leak after this. Best of luck with your repairs.Have the windows wide open and wear an industrial respirator. Use a disposable paint brush. Air out for several days before you go back in again.

I like to give credit where credit is due. J&R in OHIO told me to use the Bondo. Great advice as it worked. No leaks after that. Can't quite remember it must have been a liquid as it was applied with a disposable paint brush. Look up 3M Bondo on the internet.