Roof Cost Formula:
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Definition: This calculator estimates the total cost of an asphalt shingle roof based on quantity in squares, 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 roof quantity is multiplied by price per square to get material cost, then labor cost is added for the total.
Details: Accurate cost estimation ensures proper budgeting, avoids material shortages, and helps compare contractor bids.
Tips: Enter the roof quantity in squares (1 square = 100 sq ft), price per square, and labor cost. Quantity 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 a typical price per square?
A: Asphalt shingles typically cost $90-$150 per square for materials, but prices vary by quality and location.
Q3: How do I estimate labor costs?
A: Labor typically adds $50-$100 per square, or get quotes from local contractors for accurate pricing.
Q4: Does this include underlayment or other materials?
A: No, this calculates shingle costs only. Add 10-20% for underlayment, flashing, and other components.
Q5: How do I measure my roof in squares?
A: Calculate your roof's total square footage (length × width for each plane) and divide by 100.