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maki2 - I put up the polyiso boards with the foil side facing the ceiling. Are you saying that's wrong? It it useless? Like, should I tear it down and re-do it with foil side facing down? Note: I didn't use foam matts or anything else -- just one sheet of polyiso on the fiberglass ceiling, foil...

Next step ... cover the insulation with something to prevent ripping it, and to have a more a finished look. Whatever I use will have to mount/stick to the polyiso and seam tape, since there is nothing in the ceiling to screw into. One thought was to do a collage with laminated cardboard...

Images didn't upload above. Trying a link:  

Follow-up with pics. Materials used: -Polyiso boards. Use half-inch boards if your ceiling is shaped/molded; thicker boards won't bend. -Polyiso crumbs. Keep all the little cuts and shavings as you cut the larger pieces, and press them into the gaps between bigger pieces once the entire...

Thanks for the replies. Gsfish, it may have been an illusion, but I swear those pieces of tape felt like ice packs! Maki2, great info, thanks. Always better to know why in addition to what. I do know the difference between generic duct and Duck brand tapes, but can see why you thought I confused...

I'm applying pieces of polyiso insulation boards to the ceiing, then taping over the seams between the pieces. What's the best tape to use for this? I started using silver metallic Duck Waterproofing Tape (pic below), but noticed it got WAY colder than the insulation and even...

I got the 4x8 polyiso boards yesterday, but the guy at Lowes convinced me to use 3M 90 adhesive spray instead of a hot glue gun. About an hour after installing with the 3M, half the pieces popped off with minimal pressure. So I decided to pull them all off (too easy) and start again with some...

That's interesting...$42 worth covers the ceiling with two 3mm layers.  I was leaning toward those half-inch 4x8 styrofoam boards, but this is cheaper and seems easier to work with. Would 6mm (1/4 inch) do a decent job retaining warmth, with just a tapestry under it? What do you use to adhere...

That's good to hear, thanks. I'm definitely doing the ceiling this week and skipping the walls, and we'll see how it goes.

I've only noticed a few people say they use a camp stove as heater. I was under the impression a Buddy heater was safer and that most people used them for that reason...but if a lot of people just use a camp stove safely, I'll go with that too. I like that it'll save me the minor hassle of...

Thanks for the ideas. I'll look into these and figure out the best combo for budget and doability.

I have a '98 Ford E-350 Club Wagon with windows all around, regular factory interior plastic walls, and an aftermarket fiberglass high top with a smooth ceiling (no ribs or furring strips). I'm doing a budget/unskilled DIY build, and have a question about insulation. I'll be traveling with the...

A lot of the forest roads I travel around Montana have many bumps and dips, often with large rocks sticking out of the top of the bumps. The longer the distance between the front and back axles, the better the chance the center of the van will bottom out on top of the bump. This pic illustrates...

For me the question depended on size and usage. I needed an extended-length van and I drive mostly on unpaved mountain roads that can have deep ruts and mounds. For this, the smaller wheelbase of extended Fords and Dodges works better than the longer wheelbases of extended Chevys and GMCs. Of...

Dennis, it's got 90k miles, and a good one-owner background with mostly highway miles in AZ.

Thanks, all. Headache, I cut out the roll bar because its only use would be to build cabinets and I prefer open space in the middle of the van. I'll build storage above the front seats and up top in the rear, under the half-bed box, under the table/desk, and under the sink cabinet, with room to...

Thanks! I cut out the roll bar because its only use would be to build cabinets, and I prefer open space in the middle of the van. I'll build overhead storage above the front and rear, under a half-bed box, under a table/desk, and under a small sink cabinet. Plus a couple of tied-down bins...

Been looking for a while and finally pulled the trigger on this '98 Ford E350 one ton. Since I'll be living mostly up on the high narrow overgrown forest roads, I needed the lowest-height van with the highest possible ground clearance plus stand-up room inside, with a lot of windows for scenic...

Hypothetically speaking, if every van dweller could blink their eyes and make the change instantly and for free, I would guess that 50 percent of low- and medium-top van-dwellers would convert to high top, while 10 percent of those with high tops would convert to low- or medium-top. I've had a...

Probably move once a week on average. I don't mind the break down and set up. How can I when I think back to family camping ordeals in the seventies where my dad would have to set up those huge canvas multi-room tents with fifty poles and ropes and spikes and whatnot, and usually in the dark and...