Wall Construction- OLD trailer, NEW owner

[Agapeace]

Hi All, I have the unit listed in my signature. I am wondering what type of construction I can expect in the walls, wood or metal. I have had the camper for a few years and have not used it. I purchased used. I have been in a battle with some ants that set up shop in the ceiling. I believe I have won. There is some nesting damage that I need to repair. I also have some leaks to be repaired.

What type of construction are the walls? Metal? Wood?

What type of construction is the roof? Metal? Wood?

Where can I find a construction blue print, schematic, drawing, etc.?

I intend to re roof, repair soggy ceiling, damaged members, and minor de- lamination.

Any guidance or heads up on where to find info is appreciated. New to RV and RV repair.