Roof Price Calculator

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Roof Replacement Price Calculator

Asphalt Shingles (Basic) Architectural Shingles Metal (Standing Seam) Clay/Concrete Tiles Natural Slate Wood Shakes
Simple (Flat/Low Slope) Moderate (Standard Pitch) Complex (High Pitch/Multiple Valleys)

Estimated Project Total:

function calculateRoofPrice() { var area = parseFloat(document.getElementById('roofArea').value); var materialRate = parseFloat(document.getElementById('materialType').value); var complexityMultiplier = parseFloat(document.getElementById('complexity').value); var isTearOff = document.getElementById('tearOff').checked; if (isNaN(area) || area <= 0) { alert("Please enter a valid roof area."); return; } var tearOffRate = isTearOff ? 1.75 : 0; // Cost per sq ft for removal // Logic: (Area * (Material Cost + Removal Cost)) * Complexity // This accounts for labor increases on difficult roofs for both material and removal var baseCost = area * materialRate; var removalCost = area * tearOffRate; var total = (baseCost + removalCost) * complexityMultiplier; // Format result var formattedTotal = total.toLocaleString('en-US', { style: 'currency', currency: 'USD' }); document.getElementById('roofResult').style.display = 'block'; document.getElementById('finalPrice').innerHTML = formattedTotal; document.getElementById('priceBreakdown').innerHTML = "Based on " + area + " sq. ft. at approx. " + ((total / area).toFixed(2)) + " per sq. ft. (including labor and complexity factors)."; }

Understanding Roof Replacement Costs

Replacing a roof is one of the most significant investments a homeowner will make. The total cost isn't just about the materials you see on the surface; it involves professional labor, disposal fees, structural integrity checks, and local building permits. Use our roof price calculator above to get a baseline estimate for your project.

Key Factors Influencing Your Estimate

  • Roof Square Footage: In the roofing industry, "squares" are the standard unit of measurement. One square equals 100 square feet. A 2,000 sq. ft. roof translates to 20 squares.
  • Material Choice: This is usually the largest variable. While 3-tab asphalt shingles are the most budget-friendly, architectural shingles offer better durability. High-end options like slate or standing seam metal can last 50+ years but come with a premium price tag.
  • Complexity and Pitch: A flat roof or a simple gable roof is much easier to install than a roof with a steep pitch, multiple dormers, or complicated valleys. Steeper roofs require specialized safety equipment and more time to navigate, increasing labor costs.
  • Removal (Tear-off): If your existing roof has only one layer, you might be tempted to "overlay" a new one. However, most contractors recommend a full tear-off to inspect the decking underneath for rot. This process adds labor and disposal costs.

Typical Pricing by Material (Per Square Foot)

Material Avg. Cost (Installed)
Asphalt Shingles $4.50 – $7.00
Architectural Shingles $6.00 – $11.00
Metal Roofing $9.00 – $16.00
Tile / Slate $15.00 – $30.00+

Real-World Example Calculation

If you have a 1,800 square foot roof with a standard pitch (Moderate complexity) and you choose architectural shingles ($9/sq ft) and require a tear-off ($1.75/sq ft):

  1. Base Material & Labor: 1,800 x $9.00 = $16,200
  2. Removal Cost: 1,800 x $1.75 = $3,150
  3. Subtotal: $19,350
  4. Complexity Adjustment: $19,350 x 1.2 = $23,220 Total Estimate

Note: This calculator provides a rough estimate. Actual quotes may vary based on your geographic location, current supply chain fluctuations, and specific site conditions like accessibility or required structural repairs.

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