Owner Finance Calculator

Professional Roofing Cost Calculator

Include garages and overhangs.
Asphalt Shingles (Standard) Architectural Shingles Metal Roofing Clay or Concrete Tiles Slate Stone Wood Shakes
Flat or Low Slope (0/12 – 3/12) Standard Pitch (4/12 – 7/12) Steep Pitch (8/12 – 12/12) Very Steep (> 12/12)

Estimated Project Cost

Low Estimate $0
High Estimate $0

*Estimates include labor and materials. Prices may vary based on local rates, roof complexity, and specific material brands.

Understanding Your Roofing Estimates

A roof replacement is one of the most significant investments a homeowner will make. The total cost is determined by several factors beyond just the square footage of your home.

Key Factors Influencing Cost:

  • Roof Squares: Roofing is measured in "squares," where 1 square equals 100 square feet.
  • Material Choice: Asphalt shingles are the most affordable, while slate and tile offer the longest lifespan but require significant structural support.
  • Pitch and Complexity: Steeper roofs require more safety equipment and labor hours. Multiple valleys, dormers, and chimneys also increase the price.
  • Removal Costs: Tearing off old layers of shingles usually costs between $1.50 and $3.00 per square foot, depending on the number of layers.

Example Calculation

For a standard 2,000 sq. ft. roof with a standard pitch using architectural shingles:

  1. Base Material + Labor: 2,000 x $8.00 = $16,000
  2. Pitch Multiplier (1.15): $16,000 x 1.15 = $18,400
  3. Tear-off (if selected): Add ~$4,000
  4. Total Estimated Range: $18,400 – $22,400
function calculateRoofCost() { var area = parseFloat(document.getElementById('roofArea').value); var materialRate = parseFloat(document.getElementById('roofMaterial').value); var pitchMultiplier = parseFloat(document.getElementById('roofPitch').value); var removeOld = document.getElementById('removeOld').checked; if (isNaN(area) || area <= 0) { alert("Please enter a valid roof area."); return; } // Base calculation var baseCost = area * materialRate; // Apply pitch multiplier (affects labor and difficulty) var costWithPitch = baseCost * pitchMultiplier; // Add removal costs if applicable ($1.50 – $3.00 per sq ft) var removalLow = 0; var removalHigh = 0; if (removeOld) { removalLow = area * 1.50; removalHigh = area * 3.00; } // Add structural/accessory buffer (10% for low, 25% for high estimate to cover waste/flashing) var lowEstimate = (costWithPitch + removalLow) * 0.95; var highEstimate = (costWithPitch + removalHigh) * 1.20; // Display results document.getElementById('resultArea').style.display = 'block'; document.getElementById('lowPrice').innerHTML = '$' + lowEstimate.toLocaleString(undefined, {minimumFractionDigits: 0, maximumFractionDigits: 0}); document.getElementById('highPrice').innerHTML = '$' + highEstimate.toLocaleString(undefined, {minimumFractionDigits: 0, maximumFractionDigits: 0}); // Smooth scroll to result document.getElementById('resultArea').scrollIntoView({ behavior: 'smooth', block: 'nearest' }); }

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