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Old 01-10-2017, 07:14 PM   #51
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Location: Cheyenne wy
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Originally Posted by superdave View Post
come on down to florida in feb. we'll raise your roof also
Heck yeah. Deal . Long long drive from Wyoming though.

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Old 01-10-2017, 07:48 PM   #52
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Originally Posted by Adventure Bus View Post
Im going to resurrect this old thread because it seems there are some pretty knowledgeable people on it.

I am trying very hard not to do a roof raise. Im at 6'5" now before removing stock flooring. Im going to try and see if there is a way I can stay there (or even gain a little). Im 6'4" so very close.

My thought was, what if I did 1/2" of rigid foam on the floor, glue down 1/2 of tongue and groove plywood, then use some sort of sheeting for flooring? like linoleum or vinyl. Then later down the road if we notice its just too much cold or heat coming through the floor doing an exterior bottom spray layer of closed cell foam. Under my bus doesn't seem too much that I would need access to, before spraying I would drop down wires ect and clear it down as much as possible to bare metal then do about 2 inches of spray foam. My main concern with spray foam on the outside is that I have not seen it done, many here speak of it but its just conjecture and hard to find real world examples.

This plan would put the ceiling height within 1/4 inch of where it is now and save me from having to do a roof raise. Or should I just suck it up and do the 18" roof raise and not have to worry about space and do the full 3" of foam... Wonder which of these options would be cheaper.

Lots to ponder, thanks for any input you can give.
6'3" not as knowledgeable as the other wizards on here.

If you want to do it right, you should probably do the full 18" roof raise. You're gonna be pouring thousands of dollars into your bus I still feel this heavy weight in my heart for not doing the roof raise. My original plans were a lot less ambitious than what it's evolved to be, and I had to draw a firm line somewhere (Spray foam and roof raise). But it's behind me and my bus has taught me a lot. If/when I do it again, roof raise and spray foam for sure.

I have a 1/2" in my floor, it's not the best but I'm pretty pleased with it. I ended up impulsively putting an extra inch in the ceiling and can only stand up 95% straight, but that's okay. I can stand on my floor barefoot semi comfortably when it's 30 degrees out and I have a 1500watt heater running. I'm planning to have slippers for the bus/guests. Later down the line I like the idea of applying some rigid foam beneath the bus. But logistically I think a lot of thermal bridging would bypass the insulation beneath the bus and kind of defeat the purpose. Since my wife is 4'8" she's happy with the height, any discomforts I have vanish after a few beers anyway.
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Old 01-10-2017, 07:52 PM   #53
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EI added 5/8 inch of insulation to roof, walls and floor. BIG difference, especially from covering the side windows.

Before I added it, a 12k btu rooftop AC couldnt keep up wih either heating or cooling (especially cooling). With the insulation, parked on a 100f Texas day it will cool down almost 20 degrees. Note that my bus has a door in the middle that separates the rear cargo area from the living area, so we are really only talking about the front half of the bus.

Bottom line: 5/8 of R-Max made a WHOPPING big difference. I'd start there and see what ya got. YMMV
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Old 01-10-2017, 09:15 PM   #54
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I'm real late to the party but, you do really need to insulate the floor. Not just against cold but against heat if only from the road. I put 2" of foam insulation under the floor and it makes a huge difference in the temp inside. At 6'2" I'm not as tall as you but I feel the pain. I did a compromise on the roof raise and added a "pop top" to allow me to walk in my bus without slouching or continuously banging my head.
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Old 01-10-2017, 10:21 PM   #55
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My current bus floor is ~1/2" poly and 3/4" plywood... when it's 32F outside, the floor is 45... when it's 0F outside the floor is 25. With the heater at 70. Snow from my shoes never melts on the floor. Condensation from the ceiling drops onto the floor and freezes into stalagmites.

I didnt do the floor in this bus, bought it this way. Bus 2.0 is getting several inches of insulation floor ceiling walls, basically everywhere I can get it!
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Old 01-11-2017, 04:32 PM   #56
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Rigid Foam Board

How do you best handle the curvature of the ceiling? Several layers of 1/4", is 1/2" flexible enough? What type of adhesive?

My plan for the floor was to pull up everything to bare metal and map out all the framework for future build out. Fix any rust, prime and paint. 1/2" foam board, 1/2" tongue and grove, then laminate.

And, if I'm not going to cover my windows at all is there any point at all? I don't see us winter/cold weather camping but we will be out west and in the southwest this summer, efficient cooling would be nice. The plan now (cheap and fast) is a portable unit hooked to a honda generator. The living area of the bus is 20x8 - so I don't need a lot of BTU's.

Speaking of the southwest and the heat will spray foam cause fumes and be an issue?

Thank you.
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Old 01-11-2017, 06:23 PM   #57
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I can tell you from experience in Oklahoma and Texas: a single portable AC wont put a DENT in an uninsulated bus.

My bedroom area is 7x9ft of the bus, insulated everywhere, and a 5000BTU does it ok with the door shut. Ceiling covered in 3/4" polyboard. Windows covered by 3/4" polyboard and plastic sheeting.

The front 20 feet... not so good. Half the windows covered like the rear, half the ceiling with a single layer of 3/4" on it... A 5000BTU up there running together with the one in the rear brings the front temps down from 105F to 95F on a 90F day. At best. It really only works at night. You want a snowball's chance in Texas July of cooling the bus, you're gonna have to cover them windows in insulation., as well as the ceiling and walls. And windshield. Good luck.

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Old 01-11-2017, 06:52 PM   #58
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Dalez sings the truth.

There is Hell, and there is Texas Summers. You'd need a physicist to tell the difference.
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Old 01-11-2017, 09:00 PM   #59
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just keep moving until the temp is just right. summer in Texas? C'mon head north come back south in the winter. WE build this freedom to travel to the best places and YOU ALL DRIVE INTO FROZEN AND BURNING TEMPS.
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Old 01-11-2017, 09:23 PM   #60
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just keep moving until the temp is just right. summer in Texas? C'mon head north come back south in the winter. WE build this freedom to travel to the best places and YOU ALL DRIVE INTO FROZEN AND BURNING TEMPS.
Haha. Some of us have obligations and jobs that are location bound. I can't wait to retire and have that freedom though

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