One of the best things i've come across for making a building energy
efficient is a thin layer of insulating foam sprayed on, then added
fiberglass or stabilized cellulose in the remaining space. Seals out
bugs, generally mice, drafts, etc and also makes a vapor barrier. Also
good sprayed on roof sheeting.
Randy Bennell via Mercedes <mailto:mercedes@okiebenz.com>
February 26, 2020 at 11:47 AM
Winnipeg is probably at least as bad as Anchorage for cold weather.
My house was built in 1981 so is not state of the art in terms of
insulation etc. However, it is a jump ahead of what was being built in
the 60s and into the 70s. We have 2X6 stud walls with fiberglass bats
that are 6 (well 5 1/2") thick and at least a foot of blown in
cellulose insulation in the attic. It has a plastic vapor barrier
installed but not one as good as the builders currently use. They use
heavier plastic now and make more of an effort to avoid punctures etc.
We have double pane windows for the most part in the original house.
They do fine except in very cold days when we sometimes get a bit of
moisture condensing on the inside glass. We put an addition on in 1987
and used triple pane windows in it. I think that was a mistake as I do
not think they are much better and the seals have failed in all of
them while the double pane windows are still good and they are older.
That might be an issue of who built the windows I suppose.
I guess if I were to build a new house, I would likely make it more
efficient but our existing house has been pretty good.
It is also possible to upgrade a house. One could add on more
insulation on the exterior walls etc. There is lots of available
information on how to do so.
RB
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