Loner- re: building on the road- here's how my box truck looked when I hit the road from Portland:

Spent the better part of 3 days in Nor Cal Home Depot parking lot installing the propane shower.
Here's my trailer today:

Under the paneling is Reflectix insulation installed perpendicular to the foam board underneath.
The panel is to hold it all in place.
Tricky doing it alone so used double-sticky duct tape to hold Reflectix, then those adjustable poles to help hold panel while screwing into beams with self-tapping screws.
Have fun and keep us posted with photos!
