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  • What is a good R value for exterior walls 2024?

    exterior walls R R

    Questioner:Mia Adams 2023-05-28 10:30:40
The most authoritative answer in 2024
  • Noah Davis——Works at the International Finance Corporation, Lives in Washington, D.C., USA.

    Typical recommendations for exterior walls are R-13 to R-23, while R-30, R-38 and R-49 are common for ceilings and attic spaces. See the Department of Energy's (DOE) ranges for recommended levels of insulation below.read more >>
    +119962023-06-06 10:30:40

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