Roofing Cost Formula:
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Definition: This calculator estimates the total cost of an asphalt shingle roofing project based on roof area, material costs, and labor expenses.
Purpose: It helps homeowners and contractors budget for roofing projects by providing accurate cost estimates.
The calculator uses the formula:
Where:
Explanation: The roof area is multiplied by material cost per square, then labor costs are added to get the total project cost.
Details: Accurate cost estimation helps with budgeting, comparing contractor quotes, and planning financing for roofing projects.
Tips: Enter the roof area in squares (divide total sq ft by 100), material price per square (default $150), and labor cost (default $1000).
Q1: What is a "square" in roofing terms?
A: One square equals 100 square feet of roof area, the standard measurement unit in roofing.
Q2: What's a typical price per square for asphalt shingles?
A: Prices range from $100-$400 per square depending on shingle quality and region.
Q3: How do I estimate my roof area in squares?
A: Measure your home's footprint, multiply by roof pitch factor (1.3 for medium pitch), then divide by 100.
Q4: What affects labor costs?
A: Roof complexity, local labor rates, removal of old roofing, and time of year can all impact labor costs.
Q5: Does this include additional costs like underlayment or flashing?
A: No, this is a basic estimate. Add 15-25% for underlayment, flashing, vents, and other accessories.