How to Calculate an Hourly Rate from Annual Salary

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Roofing Estimate Calculator

Include overhangs and garage.
Asphalt Shingles (Economy) Architectural Shingles (Mid-range) Metal Roofing Clay or Concrete Tile Slate or Wood Shakes
Flat or Low Slope (0/12 – 3/12) Standard Pitch (4/12 – 6/12) Steep Pitch (7/12 – 12/12) Extremely Steep (>12/12)

Estimated Project Cost:

*This is a ballpark estimate. Local labor rates and permits may vary.
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; var tearOffRate = tearOffNeeded ? 1.50 : 0; if (isNaN(area) || area <= 0) { alert("Please enter a valid roof area."); return; } // Calculation Logic // Base Cost = Area * Material Price * Pitch Multiplier // Removal Cost = Area * Tear Off Rate var materialTotal = area * materialPrice * pitchMultiplier; var removalTotal = area * tearOffRate; var total = materialTotal + removalTotal; // Formatting output var formatter = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD', }); document.getElementById('totalCost').innerText = formatter.format(total); document.getElementById('costBreakdown').innerHTML = "Material & Installation: " + formatter.format(materialTotal) + "" + "Removal & Disposal: " + formatter.format(removalTotal); document.getElementById('roofResult').style.display = 'block'; }

Roofing Cost Guide: Understanding Your Estimate

Replacing a roof is one of the most significant investments a homeowner can make. Using a roofing estimate calculator helps you budget effectively and provides a baseline when comparing quotes from local contractors. Below is a breakdown of the primary factors that influence the final price tag.

Key Factors in Roofing Costs

  • Roof Square Footage: Roofing contractors measure in "squares." One square equals 100 square feet. This calculator uses total square footage for more precision.
  • Material Type: Asphalt shingles are the most common and affordable. However, materials like metal or slate offer longer lifespans (50+ years) but come at a significantly higher upfront cost.
  • Roof Pitch: The steeper the roof, the higher the cost. Steep roofs require extra safety equipment, specialized labor, and more time for technicians to navigate the surface safely.
  • Tear-off vs. Overlay: While you can sometimes install new shingles over old ones (overlay), most building codes and manufacturers recommend a full tear-off to inspect the decking underneath.

Real-World Pricing Example

If you have a 2,000 square foot roof and choose Architectural Shingles ($8.00/sq ft including labor) with a Standard Pitch (1.15 multiplier), your base installation cost would be approximately $18,400. If you also need to remove the existing shingles ($1.50/sq ft), you would add $3,000, bringing the total estimated project cost to $21,400.

Maintenance Tips to Extend Roof Life

Once your new roof is installed, maximize your investment with these simple steps:

  1. Clean Your Gutters: Clogged gutters cause water to back up under the eaves, leading to rot and shingle damage.
  2. Trim Overhanging Branches: Prevent branches from scraping the roof surface or falling during storms.
  3. Annual Inspections: Check for missing shingles, cracked flashing, or moss growth every spring or fall.

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