The Reality of Window Replacement

May 21, 2010 Economics, Sustainability, Technology Comments (0) 1297

they could even last for twenty if you don’t mind fog

Ugh. There it is again. A newspaper article in the home section advising you to replace your windows: “The days of painting exterior wood windows are gone. Look for low-maintenance vinyl or aluminum windows that come with a factory finish that should last for years.” Heck, they might even last for 10 whole years.

The article does not address the issue of energy savings, since the article is about low maintenance, but it is worthwhile to review the four pillars of replacement window mythology:

Energy Savings: Heat rises, it doesn’t go sideways. Insulate your roof and you have saved 80% of all the possible energy savings. Replace your windows with brick walls and you only have 20% to play with.

Oh, but they are double-glazed, you say. LIKE EVERY WINDOW DESIGNED FROM 1860 to 1928. Every Victorian and early modern building constructed in a climate that includes winter was double-glazed. We just got rid of a lot of those storm windows because we didn’t like the maintenance. Continue Reading

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