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Attic Insulation R-Value Houston Homes Need: R-49 Guide
The attic insulation R-value Houston homes need is R-49 if you are re-insulating, and never less than R-30. Houston sits in climate zone 2, where ENERGY STAR and the U.S. Department of Energy recommend R-30 to R-60 for an uninsulated attic. The 2021 International Energy Conservation Code (IECC) also sets R-49 for ceilings in new […]