House Loan Calculator Income

Asphalt Shingles (Basic) Architectural Shingles Standing Seam Metal Wood Shakes Slate or Clay Tile

Flat or Low Slope (Simple) Standard Slope (Normal) Steep Slope (Complex)

Estimated Replacement Cost

Estimate includes materials, labor, and disposal fees.

function calculateRoofCost() { var area = parseFloat(document.getElementById('roofArea').value); var materialPrice = parseFloat(document.getElementById('materialType').value); var pitchMultiplier = parseFloat(document.getElementById('roofPitch').value); var tearOffNeeded = document.getElementById('tearOff').checked; if (isNaN(area) || area <= 0) { alert("Please enter a valid roof area."); return; } var tearOffRate = 1.75; // Average cost per sq ft for tear off var baseMaterialAndLabor = area * materialPrice; var complexityCost = baseMaterialAndLabor * (pitchMultiplier – 1); var tearOffCost = tearOffNeeded ? (area * tearOffRate) : 0; var total = baseMaterialAndLabor + complexityCost + tearOffCost; // Add 10% for waste/overage var grandTotal = total * 1.10; document.getElementById('totalCost').innerHTML = '$' + Math.round(grandTotal).toLocaleString(); document.getElementById('resultArea').style.display = 'block'; }

Understanding Roof Replacement Costs

Replacing a roof is one of the most significant investments a homeowner will make. The total price is influenced by several key factors including square footage, material choice, and the physical complexity of the structure. Our calculator provides a comprehensive estimate based on current market averages for materials and labor.

Key Factors That Influence Your Quote

• Roof Square Footage: Most roofers calculate costs by the "square" (a 10×10 foot area). Our calculator uses total square footage for higher precision.
• Material Choice: Asphalt shingles are the most affordable, typically ranging from $5 to $9 per square foot installed. Premium materials like slate or clay tile can exceed $25 per square foot due to weight and specialized labor requirements.
• Pitch and Slope: A steep roof requires specialized safety equipment and more labor hours, often increasing costs by 20% to 50% compared to a standard slope.
• Tear-Off Costs: Removing and disposing of old shingles adds significant labor and debris disposal fees, usually averaging $1.50 to $2.00 per square foot.

Realistic Calculation Examples

To help you budget, here are two common scenarios using our calculator's logic:

Example 1: The Standard Suburban Home

• Area: 2,000 sq. ft.
• Material: Architectural Shingles
• Pitch: Standard
• Tear-off: Yes
• Estimated Total: ~$23,500

Example 2: The Modern Metal Roof

• Area: 1,800 sq. ft.
• Material: Standing Seam Metal
• Pitch: Steep
• Tear-off: Yes
• Estimated Total: ~$45,000

Frequently Asked Questions

How long does a roof replacement take?
Most residential roof replacements take 1 to 3 days depending on the size and weather conditions.

Does insurance cover the replacement?
If the damage is caused by a covered peril like hail or a fallen tree, insurance may cover a significant portion. Wear and tear due to age is typically not covered.

Why is there a 10% overage in the calculation?
Standard roofing practice requires ordering 10% more material than the exact square footage to account for cutting shingles to fit valleys, ridges, and edges.