🧤 Insulation Calculator
Calculate the number of insulation batts or rolls needed for your walls.
How to Calculate Insulation Needed
Measure the total wall area and subtract doors and windows. For batt insulation, the width is determined by stud spacing: 15 inches for 16-inch on-center studs, or 23 inches for 24-inch on-center. Standard batts are 93 inches long (for 8-foot walls). Rolls typically cover about 40 square feet each.
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