Updated October 21, 2026
The reliable way to learn how to price roofing jobs is to stop thinking in total dollars and start thinking in squares (100 square feet of roof). Every line of a residential reroof, from shingles to tear-off to the dumpster, can be priced per square or as a fixed add, and the total falls out of the math.
Quick answer: Measure the roof in squares, add a waste factor that matches its complexity, and price materials per square. Add tear-off per layer, install labor per square with a steep-pitch adder, then dumpster, permit and flashing details. Divide total direct cost by one minus your target gross margin to get the price.
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Roof area is larger than the footprint because of pitch and overhangs. Use aerial measurement reports or measure on the roof, then convert to squares. Note the pitch of each plane, the number of valleys, hips and penetrations, and how many layers are coming off. Those details are where the price is made.
| Roof shape | Typical waste allowance to start from |
|---|---|
| Simple gable, few penetrations | about 10% |
| Hip roof or several valleys | about 12 to 15% |
| Cut-up roof with dormers and turrets | 15% or more |
Starting points only. Track your actual leftover material on every job and adjust.
A 26-square hip roof, one layer of shingles to tear off, 8/12 pitch, architectural shingles. All unit costs below are assumptions to show the method; use your supplier invoices and crew rates.
| Line | Calculation | Cost |
|---|---|---|
| Materials (shingles, underlayment, starter, ridge, drip edge, ice and water at eaves) | 29 squares ordered (26 + 12% waste, rounded) × $135 | $3,915 |
| Tear-off, one layer | 26 × $70 | $1,820 |
| Install labor | 26 × $95 | $2,470 |
| Steep-pitch adder on install labor | 15% × $2,470 | $371 |
| Dumpster and disposal | fixed | $550 |
| Permit | fixed | $200 |
| Direct cost | $9,326 | |
| Price at 35% gross margin | $9,326 ÷ 0.65 | $14,348 |
That works out to about $552 per square of roof. If you quote a competitor-style "$X per square" without doing the build-up, you will be right on simple roofs and badly wrong on steep, cut-up ones.
On a retail job, your price is your price. On an insurance claim, the carrier's estimate drives the scope, and the conversation is about matching line items and documenting supplements. Keep the two workflows separate in your head: a retail price built from your costs, and a claim file built from documented scope. Damage assessment and scope discussions with adjusters stay with a qualified roofer.
A small leak repair can take as long to set up as a day of tear-off: ladder, safety gear, drive time, materials run. Set a minimum repair charge that covers a half day of a two-person crew, and quote it before you roll the truck.
Not every call is a full reroof. Small repairs, flashing work and inspections need their own prices so they do not quietly lose money. Price an inspection as a flat fee and credit it toward a repair or replacement if the customer proceeds within a set time. Price common repairs (pipe boot, a few shingles, a section of flashing) as flat rates that include setup, safety equipment and the drive. Anything larger becomes a measured estimate using the per-square method above.
The estimate above takes ten minutes at a desk, and a roofer on a roof does not have ten minutes. Unmanually is a 24/7 AI Office Manager you talk to from the job: read it the squares, pitch and layers, and it builds the estimate from your price list, sends it, follows up two days later and chases the invoice when the job is done. It asks you before anything that spends money. See what it does for roofers, or run the calculator to see how many hours of office work turn into minutes of talking.
Add materials (with waste), tear-off, install labor, pitch adders, disposal and permit for the whole roof, divide by your margin, then divide by the number of squares. Quoting a flat per-square number without the build-up misprices steep and complex roofs.
Start around 10% for a simple gable roof and 12 to 15% or more for hips, valleys and dormers, then adjust from what is actually left over on your jobs.
Quote a price per sheet replaced, since decking condition is only known after tear-off, and get the homeowner to approve that unit price before work starts.
Home service businesses answer only about half their calls (Invoca, July 2026), and owners spend about 11 to 16 hours/week on admin. Knowing what to do is the easy part; the money leaks out in the calls you can't take, the quotes nobody chases and the invoices that sit unpaid. Unmanually is a 24/7 AI Office Manager for roofers that you run by voice from your phone:
Sources: Invoca, July 2026 (52% of home-service calls answered by a person, 60M+ calls); admin hours: Time etc / Censuswide 2023 and Amex SME Barometer 2026.
Unmanually is an AI Office Manager that works 24/7 and that you run by voice from your phone. Leave your mobile number and the AI Office Manager calls you right away, the same way it would call back one of your customers. That call is the demo: it answers, books you a 15-minute time with the founder and follows up.
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