Originally Posted by pejokerst
Also, I assume if I want to put put over the lower portion of the metal (like wanes coating) that would be OK to do as well?
I suppose that would depend on what you intend to use as the wainscoting material, and how you intend to attach it to the wall. Your trailer walls will flex while in transit, so your wainscoting will need to flex with it.
Oh, and welcome to the AirForums! We're glad to have you with us.