| [GMCnet] INSULATION [message #161363] |
Fri, 24 February 2012 08:30  |
Peter Garry
Messages: 138
Registered: July 2011
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As an architect that has designed buildings in Alberta for over 30 years (the GMC is the smallest renovated space i have done) I can tell you that spray foam insulation is by FAR the best way to get the best job done. The heat loss is mostly through air leakage around ill fitting structural members and insulation. The foam gets into all the nooks and crannies and seals tight against the structural members. Now the large single pane windows in the GMC is another matter.
PeterG
Calgary Alberta
1973 23' formerly a 'painted desert'
TZE033V100713
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| Re: [GMCnet] INSULATION [message #161368 is a reply to message #161363] |
Fri, 24 February 2012 08:52  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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The best feasible solution for those large single pane windows is cellular
blinds, lined with aluminum foil, and surrounded by U-shape valences.
JMHO,
Ken H.
On Fri, Feb 24, 2012 at 9:30 AM, Peter Garry wrote:
> As an architect that has designed buildings in Alberta for over 30 years
> (the GMC is the smallest renovated space i have done) I can tell you that
> spray foam insulation is by FAR the best way to get the best job done. The
> heat loss is mostly through air leakage around ill fitting structural
> members and insulation. The foam gets into all the nooks and crannies and
> seals tight against the structural members. Now the large single pane
> windows in the GMC is another matter.
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] INSULATION [message #161420 is a reply to message #161363] |
Fri, 24 February 2012 20:49 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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What about the isocyanates the foam process gives off? Does this totaly stop when it cures. Deadly stuff.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] INSULATION [message #161425 is a reply to message #161363] |
Fri, 24 February 2012 21:26 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
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I drilled holes in my walls and filled them with tons of foam. I used 5 cans just today and that was only for under the drivers side most rear window, and just the area left of that on the lower part of the speaker. I think the foam works super, but it takes a ton.
Speaking of it sealing things I was shocked seeing it leak on to my generator. I hadn't a clue of the large leak there!
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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| Re: [GMCnet] INSULATION [message #161434 is a reply to message #161425] |
Fri, 24 February 2012 21:42 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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| Mr.RadioActive wrote on Fri, 24 February 2012 21:26 |
I drilled holes in my walls and filled them with tons of foam. I used 5 cans just today and that was only for under the drivers side most rear window, and just the area left of that on the lower part of the speaker. I think the foam works super, but it takes a ton.
Speaking of it sealing things I was shocked seeing it leak on to my generator. I hadn't a clue of the large leak there!
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I pity you or anyone else who tries to remove that interior wall in the future. The PO of mine used just a bit of foam in the drivers side interior panel. It was almost a no come out item after that. Still have to do the pass side and hope he used less than the drivers side, or none.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] INSULATION [message #161441 is a reply to message #161363] |
Fri, 24 February 2012 22:10 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
Karma: 0
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Well since theres a wall then the outside world I highly doubt I'll ever have to remove it!
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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| Re: [GMCnet] INSULATION [message #161444 is a reply to message #161441] |
Fri, 24 February 2012 22:24 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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| Mr.RadioActive wrote on Fri, 24 February 2012 22:10 |
Well since theres a wall then the outside world I highly doubt I'll ever have to remove it!
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Radioactive Michael, aka Mickey, aka Frank Lee.
Photo of what is behind that wall....
http://www.gmcmhphotos.com/photos/showphoto.php?photo=42700&title=00513&cat=4620
The wiring to the light in the generator compartment has an access hole through the lower aluminum sheet. The aluminum sheet had old insulation between it and the wall for a seal. Your new foam may have leaked through there.
Dennis
Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] INSULATION [message #161446 is a reply to message #161363] |
Fri, 24 February 2012 22:32 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
Karma: 0
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I appreciate it. There aren't wires behind my wall in my GMC. My generator was replaced in 2001 and the wires aren't routed like that anymore. My seating was also all modifed and wires rerouted. I didn't realize however there was ever a light in that compartment for the onan. Perhaps when it was removed that is the hole that the foam came through. That would make a lot of sense!
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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