Re: Wild Blue
Are you concerned at all about condensation forming behind those foil backed panels? Is there a gap between the insulation panels and metal skin of the bus? I'm not sure, maybe someone else can weigh in on that... just something I'd keep an eye on before putting the walls on. Run some tests of having exterior/interior temperature differences to see if any condensation develops. You don't want mold/rust/wiring problems/etc. in there. Also any gaps inbetween the insulation panels reduces the R-value of the entire wall, so perhaps consider foam filler (cans of spray foam) for the gaps? The other thing is, don't try too hard to air-seal the bus up (like caulking all the windows 100%, tight fitting door, etc.) if you plan to use a woodstove or other combustion appliance, due to CO concerns (even if they are properly vented).
I hope to get a bus similar to yours ASAP, so I'm trying to think out all this stuff as well. I'm starting to think insulation is the most important consideration of the entire project. Anyway, good progress! Keep posting lots of pictures!