- Recommended R-values for wall insulation12:
- Exterior walls: R-13 to R-23
- Attics: R-30, R-38, or R-49 (best R-value is R-49 or higher)
- Ceilings: R-30, R-38, or R-49 (best R-value is R-49 or higher)
- Floors and basement subfloors: Specific recommendations vary.
- Rigid insulation performs better than other insulation types, with polyiso at R-6 per inch and closed-cell spray foam at R-7 per inch3.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.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.www.jm.com/en/homeowner-insulation/homeowne…We can talk a bit about benchmarks about what is a good r value for insulation:
- Exterior walls should have an R-value ranging from R-13 to R-23. A good R-value for exterior walls is R-23.
learnmetrics.com/insulation-r-value-chart-per-inch/The R value rigid insulation numbers show that rigid insulation performs better than other insulation types in most cases. Polyiso is the top rigid insulation performer at R-6 per inch and closed-cell spray foam is the top performer for non-rigid insulation at R-7 per inch.www.rmax.com/blog/rigid-insulation-r-value - People also ask
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