Roof Cost Formula:
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Definition: This calculator estimates the total cost of a new asphalt roof based on roof size, material price per square, and labor costs.
Purpose: It helps homeowners and contractors budget for roof replacement projects.
The calculator uses the formula:
Where:
Explanation: The roof size is multiplied by material cost per square, then labor costs are added to get the total project cost.
Details: Proper cost estimation ensures adequate budgeting, prevents project delays, and allows for comparison of contractor quotes.
Tips: Enter roof size in squares, material price per square (default $150), and labor cost (default $1000). All values must be ≥ 0.
Q1: What is a "square" in roofing terms?
A: One roofing square equals 100 square feet of roof area.
Q2: What's a typical price per square for asphalt shingles?
A: Prices range from $100-$200 per square depending on shingle quality and region.
Q3: How do I calculate my roof size in squares?
A: Measure your roof's square footage (length × width) and divide by 100.
Q4: What affects labor costs?
A: Roof pitch, complexity, location, and contractor rates all impact labor costs.
Q5: Does this include removal of old roofing?
A: No, tear-off costs would be additional. Add 20-30% to labor cost if including removal.