Insulation Calculator
Area to insulate (sq ft)
Waste Factor (%)
Insulation type
Blown-in fiberglass
Blown-in cellulose
Fiberglass batts
Spray foam (open-cell)
Desired R-value
R-11
R-13
R-15
R-19
R-21
R-30
R-38
R-49
R-60
Bags / rolls needed
—
bags
Area with waste
—
ft²
Thickness needed
—
in
Coverage per unit
—
ft²
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