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What is a good R value for exterior walls?

Daniel Lee | 2023-05-28 10:30:40 | page views：1441
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Oliver Gonzalez

Works at the World Intellectual Property Organization, Lives in Geneva, Switzerland.
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.
2023-05-31 10:30:40
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Zoe Lee

QuesHub.com delivers expert answers and knowledge to you.
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.
Home Insulation Basics | JM.com
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