I'm looking for advice on insulating a 1950's bungalow. We've done renovations and additions over the years but not touched many of the existing walls. Turns out have maybe 1" insulation in 4" walls. I'm considering blown in insulation as a quick fix for at least the coldest room (master bedroom), but the people I've talked to so far won't fill finished walls because of inconsistent results (which I can understand). I'm not in position to do a major reno at the moment (time nor energy).
My wife has brought up external insulation as another option - I'm not sure the pros and cons of that.
Has anyone who has gone the blown in route offering any advice? Other suggestions?
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