Roofing Cost Formulas:
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Definition: This calculator compares the total costs of installing asphalt shingle roofing versus metal roofing.
Purpose: It helps homeowners and contractors make informed decisions about roofing materials based on cost comparisons.
The calculator uses these formulas:
Where:
Explanation: The calculator multiplies roof size by material cost per square, then adds labor costs for each material type.
Details: Comparing costs helps budget planning and considers long-term value (metal typically lasts longer but costs more upfront).
Tips: Enter roof size in squares, material prices per square, and labor costs for both materials. Default values reflect typical ranges.
Q1: What's a "square" in roofing terms?
A: 1 square = 100 square feet of roof area, the standard measurement unit in roofing.
Q2: Why is metal roofing more expensive?
A: Metal costs more per square but lasts 2-3 times longer than asphalt (40-70 years vs 15-30 years).
Q3: What affects labor costs?
A: Roof complexity, location, and metal roofing typically requires more specialized installation.
Q4: Should I always choose the cheaper option?
A: Consider lifespan, maintenance, and energy efficiency - metal may save money long-term despite higher upfront cost.
Q5: How do I estimate my roof size?
A: Measure length × width of each roof plane, sum all areas, then divide by 100 to get squares.