Insulation R-Value Calculator
Calculate insulation R-value requirements by climate zone.
Thickness Needed
11.9"
R per Inch
R-3.2
Target R-Value
R-38
Est. Cost
$1696
Recommended R-Values by Climate Zone:
| Zone | Attic | Wall | Floor |
|---|---|---|---|
| 1 (Hot-Humid) | R-30 | R-13 | R-13 |
| 2 (Hot) | R-38 | R-13 | R-13 |
| 3 (Warm) | R-38 | R-20 | R-19 |
| 4 (Mixed) | R-49 | R-20 | R-19 |
| 5 (Cold) | R-49 | R-20 | R-30 |
| 6 (Cold) | R-49 | R-20 | R-30 |
| 7-8 (Very Cold) | R-60 | R-21 | R-38 |