Professional Roofing Cost Estimator
Get a realistic estimate for your roof replacement based on current market rates and material costs.
Asphalt Shingles (Basic)
Architectural Shingles (Premium)
Metal Roofing (Standing Seam)
Clay/Concrete Tile
Natural Slate
Flat or Low Slope (0/12 – 3/12)
Standard Pitch (4/12 – 6/12)
Steep Pitch (7/12 – 9/12)
Very Steep/Dangerous (10/12+)
How to Calculate Your Roofing Costs
Roofing costs are primarily determined by "squares." In the roofing industry, one square is a 10×10 foot area, or 100 square feet. This calculator uses your total square footage to determine the number of squares required, then applies multipliers for material quality and labor complexity.
Key Factors Influencing the Final Quote:
- Material Choice: Asphalt shingles are the most budget-friendly, while slate and tile require specialized labor and heavy-duty structural support, significantly increasing costs.
- Roof Pitch: The steeper the roof, the higher the labor cost. Steep roofs require safety harnesses, scaffolding, and more time for installers to move around.
- Waste Factor: Most contractors add 10-15% to the total square footage to account for shingles cut to fit hips, valleys, and edges.
- Tear-Off Costs: Removing one layer of old shingles is standard, but if you have multiple layers of old roofing, disposal fees and labor time will increase.
Real-Life Example Calculation
Imagine a 2,000 sq. ft. roof using Architectural Shingles with a standard pitch:
- Base Material & Labor: 2,000 sq. ft. x $8.00 = $16,000
- Pitch Multiplier (Standard): $16,000 x 1.15 = $18,400
- Old Roof Removal: $1.50 per sq. ft. x 2,000 = $3,000
- Total Estimated Investment: $21,400
Note: This estimate includes standard flashing and underlayment but excludes unexpected structural repairs to the roof deck.
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