Roof Cost Calculator
Estimate roof replacement cost by material, pitch, and location
Ground-level footprint of the roof (use home floor plan area)
Select roofing material type
Higher pitch = more surface area and labor
Affects scaffolding and labor difficulty
Remove old roofing material before installing new
Labor and material costs vary by region
Estimated Total Cost
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USD
Actual Roof Area
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sq ft
Cost per Sq Ft
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USD
Low Estimate
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USD
High Estimate
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USD
Material Cost (est.)
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USD
Labor & Install (est.)
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USD
Tear-Off (est.)
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USD
Disclaimer: Results are estimates based on 2026 national averages and may vary significantly by contractor, roof complexity, and site conditions. Always get multiple quotes from licensed roofing contractors.
How to Use This Calculator
Roof replacement costs depend heavily on material choice, roof pitch, tear-off needs, and your location. This calculator uses 2026 national cost data adjusted for regional labor rates.
- Enter your roof footprint in square feet (use the ground-level area of your home)
- Select the roofing material you want installed
- Choose your roof pitch — steeper roofs cost more to install
- Select the number of stories (affects labor difficulty)
- Indicate whether old roofing needs to be torn off
- Choose your regional cost factor
Expert Insights
Smart analysis for your roof project
Pitch Multiplies Material
Roof pitch increases actual surface area above the footprint. A 1,800 sq ft home with a steep 12/12 pitch needs ~2,430 sq ft of roofing material.
Material Lifespan ROI
Asphalt lasts 15-25 years. Metal lasts 40-70 years. Slate lasts 75-150 years. The higher upfront cost of premium materials often pays off in fewer replacements.
Overlay Limit
Most building codes allow only 2 layers of shingles. If you already have 2 layers, a tear-off is required. Overlaying also hides deck damage and shortens roof life.
Calculation Methodology
Actual Roof Area = Footprint x Pitch Factor
Material Cost = Actual Area x Material Price per Sq Ft
Labor & Install = Material Cost x 0.60 (labor ~40% of total installed)
Tear-Off = Actual Area x $1.50-$3.00/sq ft (if selected)
Location Adjustment = Subtotal x Location Factor
Stories Factor = Subtotal x Stories Multiplier
Total = Material + Labor + Tear-Off, adjusted for location and stories
Average Roof Costs by Material (2026)
| Material | Cost / Sq Ft (Installed) | Lifespan |
|---|---|---|
| Asphalt 3-Tab | $4.50 - $6.50 | 15-20 years |
| Asphalt Architectural | $5.50 - $8.00 | 20-30 years |
| Standing Seam Metal | $10.00 - $16.00 | 40-70 years |
| Corrugated Metal | $7.00 - $12.00 | 30-50 years |
| Clay / Concrete Tile | $12.00 - $20.00 | 50-100 years |
| Natural Slate | $18.00 - $30.00 | 75-150 years |
| Flat (EPDM/TPO) | $6.00 - $12.00 | 15-25 years |
Authority References
- NRCA — National Roofing Contractors Association. Learn more
- RSMeans — Construction Cost Database 2026. Learn more
- Remodeling Magazine — Cost vs. Value Report 2026. Learn more
Frequently Asked Questions
How much does it cost to replace a roof?
The national average roof replacement cost is $8,500 for asphalt shingles on a 2,000 sq ft home, with most projects ranging from $5,500 to $14,000. Metal roofs cost $12,000-$24,000, tile $15,000-$30,000, and slate $25,000-$50,000.
How much does a new roof cost per square foot?
Asphalt shingles: $4.50-$8.00 per sq ft installed. Metal: $7-$16 per sq ft. Tile: $12-$20 per sq ft. Slate: $18-$30 per sq ft. Flat (EPDM/TPO): $6-$12 per sq ft. Steeper roofs and multi-story homes add 10-35%.
Does roof pitch affect cost?
Yes. Steeper roofs require more materials and are more dangerous to install. A steep roof (9/12 or higher) costs roughly 35% more than a flat or low-pitch roof for the same footprint.