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Air_Cooled_Nut
Samba Member
Joined: March 27, 2004
Posts: 3069
Location: Portland, Oregon
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 Posted: Sat Oct 25, 2008 8:43 am Post subject: Insulating, expanding foam for automobiles |
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There was a long, 9-page thread in the Bay Window Bus forum about boosting the heating system of a Bus. There was some talk about insulation (which has it's own, very long thread) and expanding foam. A guy who works with windows said don't use the expanding foam from the hardware store (i.e. The Home Depot, Lowes, Ace, etc.) as it's OPEN CELL. They don't use it because it allows moisture through. He said to get CLOSED CELL, low expansion foam. This will insulate better as well. He gave a link on where to go and this is the stuff I think that should be used:
http://www.crlaurence.com/ProductPages/F/F0M0875_5858.html?Origin=
Here's the author's original post:
| bljones wrote: |
Low emissivity window films are a great idea. they do a great job, as noted, at keeping heat in in the winter time, with the added benefit of taking advantage of solar gain to add heat. In the summer, they keep the vehicle cooler by reflecting heat away from the interior.
Some foam info- DO NOT use the "crap in a can" as we fondly call it in the window industry. The stuff you find at the home improvement type stores is a high expansion open cell foam, which means two problems in one. The high expansion rate means that the stuff will bulge interior panels. The open cell part is the bigger problem. the stuff absorbs and traps moisture, causing big trouble from a rust standpoint. what you want is a professional grade, low expansion closed cell foam, like this stuff (handi seal- the can on the right)
http://www.crlaurence.com/ProductPages/showLine.asp?GroupID=3040&Path=::330::3040 |
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Did I mention that I'm an original Darksider?
'72 VW Squareback, 2007cc, GB 5-speed, rag top; '76 VW Riviera Penthouse Sundowner 2.0L; 2015 Audi S5 Cabby w/Stage II APR; '06 Ducati Sport Classic 1000; '14 Ducati Diavel Strada
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localboy
Samba Longboarder
Joined: December 06, 2003
Posts: 5153
Location: "Mainland", PNW
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| Posted: Sat Oct 25, 2008 9:35 am Post subject: |
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The bigger question is can it be trusted? After all, it's the bay window forum.  JK!
Interesting. If it works as advertized it'd be good in a camper.
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Adriel Rowley
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Joined: October 12, 2006
Posts: 4876
Location: Mesa, Arizona
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 23022
Location: Northwest of Normal
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| Posted: Sat Oct 25, 2008 10:49 am Post subject: |
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The problem with this stuff is it can squeak as you're rolling it down the road and the metal moves against it. Also, if the panel it's behind ever rusts, you have a lot of tearing apart to do because you'll have to get it out before you can weld unless you want a smouldering fire inside.
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Those who can- do.
Those who can't? Subaru. |
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Russ Wolfe
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Joined: October 08, 2004
Posts: 25187
Location: Central Iowa
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| Posted: Sat Oct 25, 2008 10:59 am Post subject: |
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Hey, you can carve and shape it, and paint right over it.
Great for Bay buses.
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localboy
Samba Longboarder
Joined: December 06, 2003
Posts: 5153
Location: "Mainland", PNW
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| Posted: Sat Oct 25, 2008 11:07 am Post subject: |
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| Russ Wolfe wrote: |
Hey, you can carve and shape it, and paint right over it.
Great for Bay buses. |
 Cold...but funny.
IF I ever restore my Westy, I'll probably just stick w/ the plastic bubble wrap stuff. Cheap, functional, doesn't absorb H2O and can easily be removed if need be.
_________________
One man's "patina" is another man's cancer...
Black '65 Resto-Custom S Notch 2110 cc powered
original paint Pearl White '66 Westy SO-42
Allstate single-wheel trailer project |
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Air_Cooled_Nut
Samba Member
Joined: March 27, 2004
Posts: 3069
Location: Portland, Oregon
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| Posted: Sat Oct 25, 2008 1:26 pm Post subject: |
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| localboy wrote: |
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IF I ever restore my Westy, I'll probably just stick w/ the plastic bubble wrap stuff. Cheap, functional, doesn't absorb H2O and can easily be removed if need be. |
Agreed!
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Toby http://www.aircoolednut.com/
Did I mention that I'm an original Darksider?
'72 VW Squareback, 2007cc, GB 5-speed, rag top; '76 VW Riviera Penthouse Sundowner 2.0L; 2015 Audi S5 Cabby w/Stage II APR; '06 Ducati Sport Classic 1000; '14 Ducati Diavel Strada
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abgwin
Samba Member
Joined: August 22, 2004
Posts: 1490
Location: Toledo, oHIo
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| Posted: Sat Oct 25, 2008 2:50 pm Post subject: |
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| what i've always thought would be a great product, yet have never seen, would be a combination of rust-killer and expanding foam. |
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