A roofing square is **100 square feet of roof surface** — a 10 ft by 10 ft area. It’s the standard unit every roofer uses to price materials and labor.
The number that surprises most homeowners: your roof is bigger than your house.
– **Slope adds surface area.** A 2,000 sq ft single-story home with a moderate 6/12 pitch has roughly 2,240 sq ft of roof — about 22 squares.
– **Overhangs add more.** Eaves and rake overhangs typically add 8 to 12 percent beyond the footprint.
– **Waste factor is real.** Cuts at valleys, hips, and ridges mean we order 10 to 15 percent more material than the raw measurement, and more on a complex roof.
A typical Houston single-story home lands between 15 and 25 squares. Two-story homes with the same living space often need fewer, because the footprint is smaller.
When you compare bids, check that every roofer measured the same number of squares. A quote based on a low square count will always look cheaper until the material runs short.