Not sure if you've discovered, but those rails on rear are only used to hold up the rear air conditioner. My buses only rust was under these. I think the aluminum to galvanized roof caused a whole bunch of corrosion.
I'm also going to cover the top of my bus with solar panels, but going to build a small walkway down the center of the bus for panel maintenance and washing.
Not sure if you've discovered, but those rails on rear are only used to hold up the rear air conditioner. My buses only rust was under these. I think the aluminum to galvanized roof caused a whole bunch of corrosion.
Thanks!!! Makes total sense now that I think about it!
I'm also going to cover the top of my bus with solar panels, but going to build a small walkway down the center of the bus for panel maintenance and washing.
That's a great idea too! In my case I'll have to wash and maintain from a ladder at the sides...