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Estimate Your Roof Replacement Cost

Average US home is ~1,700 – 2,200 sq.ft.
Asphalt Shingles (Standard) Architectural Shingles (Premium) Standing Seam Metal Clay/Concrete Tiles Natural Slate Wood Shakes
Flat or Low Slope (Walkable) Medium Slope (Standard) Steep Slope (Hard to walk) Very Steep (Specialized gear required)
Simple (Gable, no dormers) Moderate (A few valleys/dormers) Complex (Many levels, skylights, chimneys)

Estimated Cost: $0.00

Cost Breakdown:

  • Materials & Labor Range: $0
  • Pitch/Complexity Adjustment: 0%
  • Old Roof Removal: Included

*This is an estimate based on national averages. Actual local quotes may vary by 15-20% due to regional labor rates and current supply chain pricing.

function calculateRoofCost() { var area = parseFloat(document.getElementById('roofArea').value); var materialBase = parseFloat(document.getElementById('materialType').value); var pitchFactor = parseFloat(document.getElementById('roofPitch').value); var complexFactor = parseFloat(document.getElementById('complexity').value); if (!area || area <= 0) { alert("Please enter a valid roof area."); return; } // Calculation Logic // materialBase represents cost per sq ft (material + labor) // We adjust by pitch and complexity var totalMultiplier = pitchFactor * complexFactor; var baseTotal = area * materialBase; var finalEstimateLow = baseTotal * totalMultiplier * 0.9; var finalEstimateHigh = baseTotal * totalMultiplier * 1.1; // Removal cost usually ranges from $1.50 to $3.00 per sq ft var removalCost = area * 2.00; var formatter = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD', }); document.getElementById('totalEstimate').innerText = formatter.format(finalEstimateLow) + " – " + formatter.format(finalEstimateHigh); document.getElementById('materialCostDetail').innerText = "Estimated Material & Labor: " + formatter.format(baseTotal); var percentageIncrease = Math.round((totalMultiplier – 1) * 100); document.getElementById('laborMultiplierDetail').innerText = "Pitch/Complexity Adjustment: +" + percentageIncrease + "% difficulty premium"; document.getElementById('resultArea').style.display = "block"; document.getElementById('resultArea').scrollIntoView({ behavior: 'smooth' }); }

Understanding Roof Replacement Costs in 2024

Replacing a roof is one of the most significant investments a homeowner will make. On average, a new roof can cost anywhere from $7,000 to $25,000, depending on various factors like square footage, material quality, and the architectural complexity of your home.

Key Factors Influencing Your Quote

When a roofing contractor provides an estimate, they aren't just looking at the size of your house. They evaluate the "roofing squares"—a term professionals use to describe 100 square feet of roof area. Here is what drives the final price:

  • Material Choice: Asphalt shingles are the most affordable and common. However, metal roofing, while more expensive upfront, can last twice as long (up to 50+ years). Slate and tile are luxury options that require reinforced roof structures due to their weight.
  • Pitch and Slope: A "walkable" roof (low pitch) is cheaper to install because it's safer and easier for crews to move materials. Steep roofs require safety harnesses and specialized equipment, which increases labor costs.
  • Layers of Removal: If your home has two or more layers of old shingles, the contractor must tear them all off before installing the new deck. This adds significant labor and disposal fees.
  • Water Damage: Once the old shingles are removed, contractors may find rotted plywood (decking). Replacing these boards usually costs $75–$100 per sheet.

Common Roofing Material Price Comparison

Material Avg. Cost per Sq. Ft. Lifespan
Asphalt Shingles $4.50 – $7.00 20-25 Years
Metal (Standing Seam) $10.00 – $16.00 50+ Years
Tile / Slate $15.00 – $25.00 75+ Years

Realistic Calculation Example

Let's say you have a standard 2,000 square foot roof with a medium slope and you choose Architectural Shingles.

  1. Base Cost: 2,000 sq. ft. x $8.00 (avg for premium shingles) = $16,000.
  2. Pitch Multiplier: A medium slope might add 15% to labor = $18,400.
  3. Total Range: Depending on your local market, you could expect quotes ranging from $17,500 to $20,000.

Always ensure your contractor is licensed and insured, and provides a written warranty for both materials and workmanship. Using a calculator like the one above helps you set a realistic budget before you start the bidding process.

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