Roofing squares are units of measurement used to calculate how much roofing material you need. One roofing square equals 100 square feet of roof space. If your roof is 2,000 square feet, you need 20 squares of roofing material. Roofers use this simple math to give you accurate quotes and order the right amount of shingles or other materials. According to the National Association of Home Builders, the average U.S. roof size is 2,647 square feet or 26.47 squares. Understanding squares helps you compare prices and know what contractors are talking about.
How Do Roofers Measure Roofing Squares?
Roofers measure your roof by breaking it into sections. They add up all the sections to get the total square footage. Then they divide by 100 to get the number of squares.
For example, if your roof is 1,700 square feet, that is 17 squares. This helps roofers order materials and calculate labor costs quickly. Most quotes you get will list the price per square.
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Why Do Roofers Use Squares Instead of Square Feet?
Squares make roofing easier to talk about and price. Instead of saying “18,000 square feet,” roofers say “180 squares.” It is simpler and faster for everyone.
Squares also help with ordering. Shingles are bundled and sold in units that cover one square. So if you need 20 squares, you order 20 bundles (usually 3 bundles per square). Roofing material costs range from $4 to $40 per square foot, according to RubyHome (2025), which means a 1,700 square foot roof costs $6,800 to $68,000 total.
How Much Do Roofing Materials Cost Per Square?
Material costs vary a lot by type. Here are common materials and their costs per square.
| Material Type | Cost Per Square Foot | Cost Per Square (100 sq. ft.) |
|---|---|---|
| Basic asphalt shingles | $4.25-$4.95 | $425-$495 |
| Architectural asphalt shingles | $4.50-$8.25 | $450-$825 |
| Metal roofing | $5.50-$17.05 | $550-$1,705 |
| Concrete tiles | $11.00-$19.80 | $1,100-$1,980 |
What About Labor Costs Per Square?
Labor makes up a big part of your roof cost. The average roof replacement cost is $9,526, according to RubyHome (2025). Most roofers charge between $50 to $150 per square for labor alone.
A roofer with high skill and good reviews may charge more. A newer roofer might charge less. Always get multiple quotes to compare prices. The U.S. roofing contractor industry is worth $81.3 billion as of 2025, according to IBISWorld, showing this is a major market.
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Connect with an experienced roofing solutions to discuss your roofing needs and schedule an inspection.