Wall Insulation Calculator
R-value and material from climate zone and wall assembly.
Inputs
sq ft
in
$
Results
Insulation R-value
10.99
Insulation material cost
$1,050.00
Total wall R-value12.85
Wall U-factor0.08
Code-required R-value20
Annual wall heat loss cost$149.00
Savings vs uninsulated$522.00
Meets CodeNo
Additional Thickness2.87
How to Use This Calculator
- Enter Total wall area, IECC Climate zone, and Zone 1 (very hot — Miami, Key West).
- Set Zone 2 (hot — Houston, Phoenix), Zone 3 (warm — Atlanta, Dallas), and Zone 4 (mixed — Baltimore, St. Louis).
- Adjust Zone 5 (cool — Chicago, Boston), Zone 6 (cold — Minneapolis, Burlington) as needed.
- Review Insulation R-value and Insulation material cost ($).
- Use Total wall R-value and Wall U-factor to inform your decision.
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