Recommended R-Values
Attic: R-49 minimum, R-60 ideal. Walls: R-19 to R-21. Floors over crawl spaces: R-19+. Encapsulated crawl walls: R-15+.
How Much Insulation Do I Need?
Department of Energy recommendations for Climate Zone 4A (Chattanooga) provide the baseline. Going higher pays back fast in our climate.
Frequently asked questions
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