Yea, since the floor is out of the sun, even on warm days it stays fairly cool to the touch. Great when it's warm out, helps regulate interior temp... however, at night it sucks the heat out of the space real quick. I've had mine raw for over a year, did that three month trip in it, and have decided to insulate it.
I probably wouldn't mind so much if it was just me, but I've got the wife and baby and they want to be warm at night without have to load up on down jackets If you're normally in a warm area, I probably wouldn't bother with insulating.
Subscribed to your build, looking great!
Yeah, HD carries Owens Corning "FOAMULAR" XPS. Pink Stuff. It is SCORED, SQUARE EDGE
If they do not have it on hand, they can certainly order it for you.
I am probably going to lay wood flooring over the aluminum. I figure since it's so small I can go with something exotic and it won't break the bank. I'm going to park my motorcycle in there so it has to be somewhat water proof. The roof on the other hand gets so hot on even a cloudy day that you can't touch it. I was thinking of a shade covering the roof outside and insulation inside. Thanks for sharing your build. The wealth of knowledge on this site is awesome.
Definitely know how that roof goes. I ended up putting panels of 3/4" polyiso in between the roof aluminum cross-members, and then just screwing 1/8" luan panels over everything. Just doing that significantly improved the heat transfer through the roof. However, there was still a lot coming through those cross-members/luan, and condensation build-up on the cross-members at night would soak into the luan. So I'm adding 3/4" furring strips down the length of the vehicle, screwed onto the cross-members, putting another round of 3/4" insulation between those (most-likely XPS, per conversation with idasho above), and then putting new panels on top of that. With the two roof vent fans I've installed, that should make it tolerable even on the warmest days.
Picture of the additional roof insulation progress below. Additional 3/4" insulation to go in between furring strips, down the length of the box. 1/8" panels to screw into furring strips.
There's one in Santa Maria. I've used the one down here in 91355 and it is like a contractor's Home Depot but gladly sells small items to the average Joe.