Blow-In Insulation Calculator
Area (sq ft)
Please enter a positive number.
Desired R-Value
R-30
R-38
R-49
R-60
Common attic R-values: R-30 to R-60.
Bag Coverage (sq ft @ R-value)
Default for fiberglass at R-38. Adjust if needed.
Calculate
Results
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Enter values and click Calculate.