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Those look like processed timbers, so the joins would be tighter than logs. It's been 16 years since I've done a home energy audit, but I think the walls would be rated around R 15. Biggest potential heat loss might be the windows and skylight, depending upon how well they were caulked. I suspect the cathedral ceiling would have two layers of SM for ~R 20. I did an audit on an identical structure with the exception of the roofing material. They had shingles on their home and snow load had caused structural failure of one of the rafters.
Heat pump should take care of looking after you, and you have the fireplace if the power goes out..it's about 35 years old, no?
Looks good. Go for it.
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Best
Les
My train of thought has been replaced by a bumper car.
Last edited by oldE; 06-25-2026 at 08:58 AM..
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