| [GMCnet] Insulating Coach [message #229804] |
Thu, 14 November 2013 12:20  |
Peter Garry
Messages: 138
Registered: July 2011
Karma:
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Senior Member |
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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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