Which Saves More on Heating & Cooling: Wall Insulation or New Windows?

Answered by Brendan ~ September 15th, 2010 | No Comments » | Respond to this question

50-year old home in Denver, Colorado, is of 2 x 4″ frame construction, and has eight single pane windows. What expenditure will improve my utility costs more–having the walls and attic pumped with insulation or replacing the windows with good vinyl double-pane windows?

Barbara O. ~ Denver, Colorado

Brendan Fowler

Spend your money insulating your walls and attic.   I would go no less than R-38 in your attic and R-19 in the walls if you can.  Windows would be nice, but without wall and attic insulation it would be kind of like putting the carriage in front of the horse.

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