Roofing Cost Formula:
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Definition: This calculator estimates the total cost of asphalt roofing based on the number of squares needed, price per square, and labor costs.
Purpose: It helps homeowners and contractors budget for roofing projects by calculating material and labor expenses.
The calculator uses the formula:
Where:
Explanation: The roofing quantity is multiplied by price per square to get material cost, then labor cost is added for the total.
Details: Accurate cost estimation helps with budgeting, comparing contractor quotes, and planning roofing projects.
Tips: Enter the roofing quantity in squares (1 square = 100 sq ft), price per square, and labor cost. All values must be ≥ 0.
Q1: What is a "square" in roofing?
A: One square equals 100 square feet of roof area, the standard measurement unit in roofing.
Q2: What's included in labor costs?
A: Labor covers installation, old roof removal, disposal, and any necessary repairs to the roof deck.
Q3: How do I calculate the number of squares needed?
A: Measure roof area in square feet and divide by 100 to get squares (add 10% for waste).
Q4: What affects price per square?
A: Shingle quality, underlayment, flashing, and regional material costs all influence price.
Q5: Should I include permit costs?
A: No, this calculator covers materials and labor only. Add permit fees separately if required.