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Roofing Cost Calculator

Compare material and install costs for shingle, metal, tile, and slate roofing.

This roofing cost calculator for contractors generates material and installation cost ranges for nine different roofing materials, and can be customized by adding pitch/slope, number of stories, and regional labor rates. It also calculates tear-off costs.With Houzz Pro’s material Cost Catalog, you can speed up your estimate process by pre-programming material and labor costs. You can also use our Clipper tool to link costs directly to your preferred vendors’ websites.

How to calculate roofing costs for contractors

To calculate how much it will cost to install a residential roof, you’ll need to know the roof size, material selection, pitch or slope, labor cost, and any additional costs, such as tear-off, underlayment, barriers, flashings, and ventilation. Here’s how to calculate roofing costs based on this data:
  • Calculate the area of the roof.
  • Determine the waste factor (usually 10-15% for standard roofs, 15-20% for complex or high-pitch roofs).
  • Calculate the number of squares needed by dividing the total square footage, including waste, by 100.
  • Determine material costs by multiplying the number of squares needed by the cost per square. Include costs for underlayment, ice/water shield, flashings, and nails.
  • Determine labor costs by multiplying the number of squares needed by the cost per square.
  • Add additional costs, such as dumpster fees, permits (if needed), equipment rentals, etc.
  • Add on overhead and profit.
Our roofing cost calculator lets you customize your costs based on the following selections:
  • Roofing material type
  • 3-tab asphalt shingles
  • Architectural shingles
  • Standing seam metal
  • Corrugated metal
  • Clay tile
  • Concrete tile
  • Slate
  • Wood shakes
  • Synthetic shingles
  • Roof pitch
  • Low (1:12 to 3:12)
  • Moderate (4:12 to 7:12)
  • Steep (8:12+)
  • Stories (1, 2, 3+)
  • Region
  • Low-cost region
  • Mid-cost region
  • High-cost region
  • Tear-off included
  • Yes
  • No
Be sure to include ice and water shield in the first two rows and at all valleys, as insurance claims from ice dams are common callbacks.Check local codes for the number of allowable layers before adding a second shingle layer. Some jurisdictions require a full tear-off.Example: How much does it cost to replace a roof on a 2,200 square foot house?Here’s an example showing how our roofing cost calculator determines the cost for a 2,200-square-foot home.Calculator inputs:
  • Roof area: 2,200 square feet
  • Roofing material: Architectural shingles
  • Roof pitch: Moderate (4:12-7:12)
  • Number of stories: 1
  • Region: Mid-cost
  • Include tear-off: No
Based on the inputs above, the calculator provides a range for material and installation costs. Here’s the breakdown:
  • Roofing squares: 22
  • Material cost range: $3,300-$5,500
  • Installation cost range: $8,800-13,200
For greater estimate accuracy and time savings, Houzz Pro’s Cost Catalog and Clipper tools can help when estimating roofing projects. They help ensure your pricing is consistent and based on real-time data.

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