regarding paint. thoughts on using something like linex or als liner? excellant bonding, abrasion and uv resistant. repairable.
something else i thought of while reading through this thread, it might give you a chuckle, but here it is.
i've been doing a lot of research lately on how passive solar houses work, it seems the primary concern when heating a passive solar house is having mass that can be heated from inside the house and insulating the mass from the outside of the house to keep the heat in.
so the thought occurred to me that you have done the best you can to keep the cold out, what could be done with thermal mass type objects to keep the heat in and what could you use.
just brainstorming here, so bear with me.
-plywood floor with 1" foam slab on top,with concrete board and a black tile. the concrete board and tile would add mass.
-using concrete board to duct your forced air heat.
-using concrete board on the lower half of your walls.
the downsides obviously would be the added weight. the idea being that the concrete board and tile are very dense, creating a slow heat sink, that releases just as slow. allowing you to burn less fuel to keep your camper warm. if you could place your windows so the sun hit the tile that would help as well.
maybe you would have to do all of these to see some performance gains. dunno never done it before. just an interesting thought i wanted to pass along.
and keeping mind the more windows you have the more heat loss you have. windows are horrible insulators.
let me know if you think these are unreasonable ideas or not. i am curious.