Roof Square

What Is a Roof Square

A roof square is the standard unit of measurement in the roofing industry, equal to 100 square feet of roof area, used to price materials, labor, and insurance estimates consistently across every job. When a contractor says a roof is "25 squares," that means 2,500 square feet of roof surface. Every line item in an Xactimate roofing estimate that involves area, from shingles to underlayment to tear-off, is priced per square.

Converting Measurements to Squares

Divide the total roof area in square feet by 100 to get the number of squares. A roof with 3,200 square feet of surface area is 32 squares. When the measurement includes waste factor (typically 10-15% for a standard roof and up to 20% for complex hip roofs), that waste is added before converting to squares. A 3,200 square foot hip roof with 15% waste is 3,680 square feet, or 36.8 squares.

Why Squares Matter for Claims

Per-square pricing is where estimate discrepancies show up. If the adjuster measures 22 squares and the contractor measures 26, that four-square difference at $350 per square is a $1,400 gap on shingles alone, and the difference compounds across underlayment, tear-off, and other per-square line items. Accurate measurement is the foundation of an accurate estimate. Satellite measurement tools and drone imagery help resolve disputes when the two measurements do not align.