Roofing Replacement Cost Calculator
Asphalt Shingles (Basic)
Architectural Shingles
Metal Roofing
Clay or Slate Tile
Flat or Low Slope (0/12 – 3/12)
Standard Pitch (4/12 – 6/12)
Steep Pitch (7/12 – 9/12)
Very Steep (10/12+)
No (Install over existing)
Yes (Single Layer Removal)
Yes (Multiple Layer Removal)
Estimated Project Total:
Includes materials, labor, and pitch adjustments. This is an estimate; actual quotes may vary based on local labor rates.
How to Use the Roofing Cost Calculator
Replacing a roof is one of the most significant investments a homeowner will make. Our Roofing Replacement Cost Calculator is designed to provide a realistic baseline estimate by accounting for the three primary drivers of roofing expenses: square footage, material choice, and architectural complexity (pitch).
Key Factors Influencing Your Estimate
- Square Footage: Roofing is measured in "squares," where one square equals 100 square feet. The larger the footprint of your home, the more materials and labor are required.
- Material Selection: Asphalt shingles are the most common and cost-effective, while materials like metal or slate offer longer lifespans but come at a significant premium.
- Roof Pitch: Steeper roofs are more dangerous and difficult to work on. Contractors charge a "steep charge" because workers move slower and require additional safety harnesses and scaffolding.
- Tear-off Expenses: Removing one or more layers of old shingles adds labor time and disposal fees (dumpsters). Installing a new roof over an old one is cheaper but often not recommended for long-term durability.
Example Calculation
If you have a 2,000 sq. ft. roof with a standard pitch (1.15 multiplier) choosing Architectural Shingles ($7.00/sq. ft.) and you need a single-layer tear-off ($1.50/sq. ft.), the math works as follows:
- Base Cost: 2,000 sq. ft. × 1.15 pitch × $7.00 = $16,100
- Removal Cost: 2,000 sq. ft. × $1.50 = $3,000
- Total Estimated Cost: $19,100
Additional Costs to Consider
While this calculator provides a strong starting point, remember that other variables can impact the final quote from a roofing contractor:
- Decking Repair: If the wood underneath your shingles is rotted, it must be replaced at an additional cost per sheet of plywood.
- Flashing and Vents: Chimney flashing, ridge vents, and pipe boots are essential for a leak-free roof and usually add a few hundred dollars to the project.
- Local Labor Rates: Labor costs vary significantly by region. A roof in a high-cost-of-living metropolitan area will naturally cost more than in a rural setting.
Disclaimer: This tool provides an estimate for educational purposes. We recommend getting at least three quotes from licensed and insured local roofing professionals before beginning your project.