Tommy Mac Discussions › Forums › Fix-it Forum: Home Improvement & Do It Yourself Repair Forum › R-values

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    • October 20, 1997 at 2:35 pm #10673
      Jolene B.
      Guest

      What is considered a good R-value for windows. I have
      priced some windows wood interior, clad exterior with an
      R-value of 1.90. We live in Maine, is this suffient?
      Thank you

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