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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
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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.
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