How to Price a Roof Replacement: From Squares to a Quote
The per-square math every roofer uses — and the two add-ons where jobs get under-quoted
Roof pricing looks complicated from the outside and is beautifully simple from the inside: everything is measured in squares (100 sq ft of roof), and everything else is an adjustment on the per-square rate. Here's the system.
Step 1: Measure in squares
Roof area = total roof surface ÷ 100. For a typical 2,000 sq ft single-story home, that's usually 20–25 squares (the roof is bigger than the footprint because of pitch — roughly 1.2–1.5× the floor area for most roofs).
Pro tip: don't estimate from the footprint. Measure each roof plane (length × width) and add them up.
Step 2: Set your per-square rate
This is where your market, material, and labor land:
| Material | Typical installed rate per square |
|----------|----------------------------------|
| 3-tab shingles | $250–$400 |
| Architectural shingles | $350–$600 |
| Metal | $700–$1,200+ |
| Tile/slate | $1,000+ |
Your number should cover: materials, labor, underlayment, flashing, ridge venting, and disposal — plus your overhead and profit margin. If you're not sure your rate covers your costs, run it through the [labor cost calculator](https://prybar.ai/tools/labor-cost-calculator) first.
Step 3: Add the two premiums everyone forgets
This is where under-quoted roofs lose money:
### Tear-off: ~$80 per square
Removing the old roof is real labor — disposal fees alone are significant. Never bury it in your base rate; line-item it so the customer sees the value.
### Steep pitch: +15–25%
8/12 pitch and up means safety equipment, slower work, and more risk. Charge for it. Falls are the #1 injury in the trade — price the risk or don't take the job.
Step 4: Add the extras
Gutters (if included): $5–9 per linear foot
Skylights and vents: per-unit labor
Chimney flashing: per-unit
Overage: order 10% extra material for waste and cuts
Run the numbers
Use the [roof replacement cost calculator](https://prybar.ai/tools/roof-replacement-cost-calculator) — squares, per-square rate, tear-off, and pitch, and you've got a defensible ballpark in seconds. It's the same math you'd do on the tailgate, minus the arithmetic errors.
The quoting workflow that wins jobs
1. Quote fast. Customers text three roofers and the first to reply with a real number gets the walkthrough. Reply within minutes.
2. Give a range on the phone, a firm number after the measure. The site visit turns the ballpark into the signed bid.
3. Follow up at 48 hours. Roof quotes are big-ticket — homeowners think longer. A single warm nudge recovers a lot of "we're still deciding."
That whole front end — instant replies, quote follow-ups — is what [Prybar automates](https://prybar.ai/roofing-software) for roofing crews.
Bottom line: squares × rate + tear-off + pitch = your price. Run it through the [calculator](https://prybar.ai/tools/roof-replacement-cost-calculator), quote fast, and never skip the premiums.
Prybar helps trade businesses never miss a customer text again. Responds instantly, captures leads, books jobs — all while you work. Try it free.
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