Insulation Calculator

Calculate insulation requirements, R-values, and energy efficiency for walls and attics

Insulation Analysis

Calculation Type

Enter insulation specifications to calculate requirements

Fiberglass Batt: R-3.2 per inch
Most common residential insulation

Cellulose: R-3.5 per inch
Recycled paper, excellent performance

Spray Foam: R-6.5 per inch
Highest R-value, air sealing

Zones 1-2: R-13 to R-19
Hot climates, minimal insulation

Zones 3-4: R-19 to R-30
Mixed climates, moderate insulation

Zones 5-8: R-30 to R-49
Cold climates, maximum insulation

R-13 to R-19: 15-20% savings
Basic upgrade from minimum

R-19 to R-30: 25-35% savings
Standard to good insulation

R-30 to R-49: 40-50% savings
Maximum energy efficiency