> I've gone through the exercise of retrofitting insulation.
Based on your experiences what do you recommend? (or what sources do you recommend consulting to learn more about retrofitting older buildings?)
Based on your experiences what do you recommend? (or what sources do you recommend consulting to learn more about retrofitting older buildings?)
Counter-intuitively, air sealing is usually the #1 improvement. A good audit with thermal scans is worthwhile, especially if your muni offers a subsidized audit.
Tough to go into more detail without a little more information.
I think the hard thing for people to think about is that heat transfer is exponential. But we don't measure it that way. In fact R values are really misleading[1].
Meaning transfer coefficients can vary by orders of magnitude. So it's easy for one source like air leakage to totally swamp every other source.
[1] Figure of merit is really 1/R (smaller is better) not R.
> Tough to go into more detail without a little more information.
Have a ~1800 square foot single family Colonial located in Northeast USA built around 1910. It was partially renovated ~2000 but most of it's still uninsulated (afaict, still very new to this!).