The step van had some sheet aluminum riveted onto the metal ribs along the walls and ceiling. The first order of business is to gut and power wash the inside and the outside of the van. There was a bit of old insulation behind the walls as well as a plywood divider between the drivers compartment and the rear of the van.
It was all taken out. I added the aluminum sheeting pulled from the van to a little aluminum pile I had been saving. I got about $60 for it when I recycled it at the scrap yard $$
Condensation on the metal walls and ceiling can be a problem in a van. Once I pulled off the riveted paneling I could see some mold behind the walls. I mixed a spray bottle with 50% bleach 50% water and sprayed all the mold. After letting it sit for awhile I power washed the entire van inside and out. I am going to glue 2” foam sheets to the walls and seal it up real good with spray foam to prevent condensation on the inside of the van.