*This is an estimate. Local labor rates and permits may vary final pricing.
Understanding Roof Replacement Costs
A new roof is one of the most significant investments a homeowner will make. The average cost for a professional roof replacement in the United States ranges from $7,000 to $15,000, though high-end materials like slate or specialized metal can exceed $40,000.
Key Factors Affecting Your Estimate
Square Footage: Roofing is measured in "squares." One square equals 100 square feet. This calculator uses total square footage for higher precision.
Material Choice: Asphalt shingles are the most common and affordable, while metal and tile offer longevity but require a higher upfront investment.
Roof Pitch: Steeper roofs are more dangerous and difficult to work on, requiring specialized safety equipment and more labor time.
Layers: Removing existing layers of shingles adds labor and disposal fees. Some local codes allow for an overlay, but a full tear-off is usually recommended.
Typical Material Pricing Guide
Material
Average Cost per Sq. Ft.
Lifespan
Asphalt Shingles
$4.00 – $7.00
20 – 30 Years
Standing Seam Metal
$10.00 – $16.00
50+ Years
Concrete Tile
$12.00 – $20.00
50+ Years
Natural Slate
$20.00 – $35.00
100+ Years
Frequently Asked Questions
How do I measure my roof area?
While the ground-level square footage of your home provides a baseline, you must account for the roof's pitch and overhangs. Usually, the roof area is 1.3x to 1.5x the footprint of the home.
Does insurance cover roof replacement?
If your roof was damaged by a covered peril—such as hail, wind, or a fallen tree—insurance may cover the cost. However, replacement due to "wear and tear" or age is typically not covered.
function calculateRoofingCost() {
var area = parseFloat(document.getElementById("roofArea").value);
var materialRate = parseFloat(document.getElementById("roofMaterial").value);
var pitchMultiplier = parseFloat(document.getElementById("roofPitch").value);
var tearOffRate = parseFloat(document.getElementById("tearOff").value);
var complexity = parseFloat(document.getElementById("locationFactor").value);
if (isNaN(area) || area <= 0) {
alert("Please enter a valid roof area.");
return;
}
// Calculations
// Base material cost
var materialTotal = area * materialRate;
// Labor cost (Base labor is roughly $3.00 per sq ft adjusted by pitch and complexity)
var baseLaborRate = 3.50;
var laborTotal = area * baseLaborRate * pitchMultiplier * complexity;
// Removal/Disposal cost
var removalTotal = area * tearOffRate;
// Total
var grandTotal = materialTotal + laborTotal + removalTotal;
// Display Results
document.getElementById("resMaterial").innerText = "$" + materialTotal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resLabor").innerText = "$" + laborTotal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resTearOff").innerText = "$" + removalTotal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resTotal").innerText = "$" + grandTotal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("roofResult").style.display = "block";
}