Curbsend
Free tool for roofing contractors

Roofing Estimate Calculator (Shingle Replacement)

Enter the roof area, pitch, stories and layers to tear off, plus ridge and eave lengths. The calculator adds waste, works out squares, shingles, underlayment, ice and water shield, ridge cap and drip edge, and prices tear-off, install, decking repairs and dumpsters.

Job details

Your pricing
Estimate
before sales tax
$9,828.30
Squares with waste: 24.3Shingle bundles: 73
Labor
Tear off 1 layer and dry-in18 hr × $65.00$1,170.00
Install underlayment, flashing and shingles (22 sq)35.5 hr × $65.00$2,307.50
Replace damaged decking (4 sheets)2 hr × $65.00$130.00
Materials
Architectural shingles73 bundle × $45.60$3,328.80
Synthetic underlayment3 roll × $114.00$342.00
Ice and water shield, eaves and valleys3 roll × $138.00$414.00
Ridge cap shingles2 bundle × $81.60$163.20
Drip edge18 piece × $14.40$259.20
Nails, vents and flashing allowance25 square × $10.80$270.00
Decking, 7/16 OSB4 sheet × $38.40$153.60
Disposal
Dumpster and disposal2 load × $570.00$1,140.00
Permits
Roofing permit1 ea × $150.00$150.00
Total before tax$9,828.30
  • Check local code for ice and water shield and ventilation requirements.

Labor at $65/hr, 20% markup on materials, equipment and disposal. Material prices and crew speeds are starting values; set your own in the app.

Send this as a quote from the driveway

In Curbsend, this calculator runs with your own prices and speeds, turns the result into an itemized quote with good, better and best options, and texts it to the customer to approve and pay a deposit from their phone.

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Pricing tips for roofing

  • Steeper pitches slow the crew and need more staging. Confirm the pitch on site before you send.
  • Each extra layer to tear off adds labor and dumpster weight. Ask, or check at the eave, before you quote.
  • Curbsend can pull roof area and pitch from satellite data for the job address, so you can quote before you climb.

Starting values this calculator uses

Material costs and crew speeds vary by market and by crew. These are the defaults; in the app you replace them with your own, and every estimate uses your numbers.

  • Architectural shingles$38/bundle
  • Synthetic underlayment (10 sq roll)$95/roll
  • Ice and water shield (2 sq roll)$115/roll
  • Ridge cap$68/bundle
  • Drip edge, 10 ft$12/piece
  • Coil nails and vents allowance$9/square
  • Decking sheet, 7/16 OSB$32/sheet
  • Tear-off hours per square per layer0.8 hr
  • Install hours per square1.6 hr
  • Dumpster (about 15 sq per load)$475/load
  • Permit fee$150

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