Roof Replacement Cost Formula:
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Definition: This calculator estimates the total cost to replace an asphalt shingle roof using Homewyse cost data.
Purpose: It helps homeowners and contractors budget for roof replacement projects.
The calculator uses the formula:
Where:
Explanation: The roof quantity is multiplied by price per square, then labor cost is added to get the total project cost.
Details: Accurate cost estimation helps with budgeting, financing, and comparing contractor bids.
Tips: Enter roof quantity in squares (1 square = 100 sq ft), price per square (default $5.56 based on Homewyse average), and labor costs.
Q1: What's included in the price per square?
A: This typically includes materials (shingles, underlayment, flashing) but excludes labor and disposal fees.
Q2: How do I convert roof area to squares?
A: Divide total square footage by 100 (1 square = 100 sq ft).
Q3: What's a typical price range per square?
A: According to Homewyse, $4.83–$6.29 per square for materials (2023 data).
Q4: Should I include tear-off costs?
A: Yes, include tear-off and disposal in labor costs if applicable.
Q5: How accurate is this estimate?
A: It provides a baseline estimate. Actual costs vary by location, roof complexity, and material choices.