Asphalt Shingles (Basic)
Architectural Shingles
Metal Roofing
Wood Shakes
Clay or Concrete Tile
Natural Slate
Flat or Low Slope (Easy)
Standard Slope (4/12 to 8/12)
Steep Slope (Harder Labor)
Complex (Many Valleys/Gables)
Estimated Replacement Cost
How to Estimate Your Roofing Costs
Planning for a new roof is one of the most significant investments a homeowner will make. Our Roofing Cost Calculator provides a localized estimate based on material choices, labor complexity, and the footprint of your home. To get the most accurate result, you must consider the "roofing square," which is a 10×10 foot area (100 square feet).
Key Factors Influencing Roof Prices
Material Choice: Asphalt shingles are the most common and affordable, while materials like slate and metal offer longevity but at a much higher price point.
Roof Pitch: The steeper the roof, the more difficult the installation. Contractors charge more for safety equipment and slower labor speeds on steep slopes.
Complexity: A simple gable roof with two flat planes is cheaper than a roof with multiple chimneys, skylights, dormers, and valleys.
Tear-off Costs: Removing one or two layers of old shingles adds to the labor and disposal (dumpster) fees.
Typical Material Price Comparison
Material Type
Avg. Cost per Sq. Ft.
Expected Lifespan
Asphalt Shingles
$4.00 – $7.00
15 – 30 Years
Metal Roofing
$10.00 – $16.00
40 – 70 Years
Clay Tile
$15.00 – $22.00
50 – 100 Years
Natural Slate
$20.00 – $35.00
75 – 150 Years
Calculation Example
If you have a 2,000 square foot roof and choose Architectural Shingles ($7.00/sq.ft) with a standard pitch (1.2 multiplier) and require a tear-off ($1.50/sq.ft):
function calculateRoofCost() {
var sqFt = parseFloat(document.getElementById('roofSqFt').value);
var materialRate = parseFloat(document.getElementById('materialType').value);
var pitchMultiplier = parseFloat(document.getElementById('roofPitch').value);
var includeTearOff = document.getElementById('tearOff').checked;
var resultDiv = document.getElementById('resultDisplay');
var totalDisplay = document.getElementById('totalCost');
var breakdownDisplay = document.getElementById('costBreakdown');
if (isNaN(sqFt) || sqFt <= 0) {
alert("Please enter a valid number for the roof area.");
return;
}
// Calculation Logic
var baseInstallCost = sqFt * materialRate * pitchMultiplier;
var tearOffCost = 0;
if (includeTearOff) {
tearOffCost = sqFt * 1.50;
}
var totalCost = baseInstallCost + tearOffCost;
// Display Results
totalDisplay.innerHTML = "$" + totalCost.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
var breakdownText = "Includes: " + sqFt.toLocaleString() + " sq. ft. of coverage, material labor adjustment, and " + (includeTearOff ? "removal of old roofing." : "no removal.");
breakdownDisplay.innerHTML = breakdownText;
resultDiv.style.display = 'block';
// Smooth scroll to result
resultDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}