I agree that insulation is important, but do a heat loss on an average older
home. Then change the R-value of the attic. Then go back and change the
infiltration value. I think you'll see why windows can be a better
investment.

wrote in message
oups.com...
I would take the $$$ savings and invest in upgraded insulation FIRST!
then windows and finally walls. Our home iss from 1950 adding more
attic insulation REALLY helped a LOT!