| [GMCnet] Insulating Coach [message #229804] |
Thu, 14 November 2013 12:20  |
Peter Garry
Messages: 138
Registered: July 2011
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I have entirely re-insulated my coach.
All the ceiling and wall linings were stripped out and tossed, and all the "house wiring" was abandoned with new circuits laid out. This took some planning as I had to anticipate all the items, now and future, that would need to be wired. Both 110V and 12V. The 12V circuits fed from the engine (running lights etc.) were left untouched but well checked. Had my grandson climb up and replace the top marker lights with LEDs (thank-you John Heslinger). The side bath module was left in place.
Then had a professional outfit come in and spray-foamed everything. (400 dollars)
Two problems then became apparent.
1. Wiring that was not securely fastened to the outside walls and roof tended to "float" to the inside surface.
2. The applicator was very generous with the amount of foam applied.
So... a little bit of cutting back for the protruding wires and a LOT of scraping to shape the foam to fit. I used large rasps that the trades use when shaping "outsulation" on houses and buildings, worked quite well. But it was laborious.
But it has sure deadened all the exterior panels. However our coaches all have extraordinarily large single paned windows, so that's where most of the heat loss is going occur. Insulated removable panels may help, although this winter a 1500 watt electric heater has made the inside quite conmfortable for the inside jobs I am doing. (It's been down to minus 14 celcius (that's about 7 fahrenheight)
Woiuld I do it again? Most certianly, if the coach was basically stripped out. But I would have the applicator use a lot less foam.
Peter Garry
Calgary Alberta
'73 - 23' (once a painted desert)
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| Re: [GMCnet] Insulating Coach [message #229806 is a reply to message #229804] |
Thu, 14 November 2013 12:31  |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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For the windows many report that cellar blinds, when surrounded by valences, help to insulate from the weather.
Larry Davick
> On Nov 14, 2013, at 10:20 AM, Peter Garry <petergarry@me.com> wrote:
>
> I have entirely re-insulated my coach.
>
> All the ceiling and wall linings were stripped out and tossed, and all the "house wiring" was abandoned with new circuits laid out. This took some planning as I had to anticipate all the items, now and future, that would need to be wired. Both 110V and 12V. The 12V circuits fed from the engine (running lights etc.) were left untouched but well checked. Had my grandson climb up and replace the top marker lights with LEDs (thank-you John Heslinger). The side bath module was left in place.
>
> Then had a professional outfit come in and spray-foamed everything. (400 dollars)
> Two problems then became apparent.
> 1. Wiring that was not securely fastened to the outside walls and roof tended to "float" to the inside surface.
> 2. The applicator was very generous with the amount of foam applied.
> So... a little bit of cutting back for the protruding wires and a LOT of scraping to shape the foam to fit. I used large rasps that the trades use when shaping "outsulation" on houses and buildings, worked quite well. But it was laborious.
>
> But it has sure deadened all the exterior panels. However our coaches all have extraordinarily large single paned windows, so that's where most of the heat loss is going occur. Insulated removable panels may help, although this winter a 1500 watt electric heater has made the inside quite conmfortable for the inside jobs I am doing. (It's been down to minus 14 celcius (that's about 7 fahrenheight)
>
> Woiuld I do it again? Most certianly, if the coach was basically stripped out. But I would have the applicator use a lot less foam.
>
> Peter Garry
> Calgary Alberta
> '73 - 23' (once a painted desert)
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Insulating Coach [message #229829 is a reply to message #229804] |
Thu, 14 November 2013 16:51 |
A Hamilto
Messages: 4508
Registered: April 2011
Karma: 39
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Senior Member |
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| Peter Garry wrote on Thu, 14 November 2013 12:20 |
... a 1500 watt electric heater has made the inside quite conmfortable for the inside jobs I am doing. (It's been down to minus 14 celcius (that's about 7 fahrenheight)...
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For folks that don't know how much difference a good insulation job makes, 1500 watts is a little over 5,000 BTUs. Compare that to not being able to get warm with the 22,000 or 30,000 BTU OEM furnace running and OAT higher than 7F.
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