Roof Replacement Cost Calculator
Estimate the total cost to replace your roof based on roof size, material, pitch, and removal of old roof.
Published by:
isCalculator Editorial Team
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How to use this tool?
Follow these steps to estimate your roof replacement cost:
- Enter Roof Area – Input the total square footage of your roof (e.g., 1500). Only positive numbers are accepted.
- Select Roof Pitch – Choose the steepness from the dropdown. This adjusts material and labor costs for slope complexity.
- Choose Material – Pick your desired roofing material (e.g., Asphalt Shingles, Metal). Each has a different cost per square foot.
- Decide on Removal – Select "Yes" to remove the old roof (adds $2/sq ft) or "No" to lay over it.
- Click "Calculate Cost" – The estimated total and a detailed breakdown (including adjusted area, material, removal, and labor costs) will appear below.
All values are in US dollars and square feet. Ensure your roof area is accurate for the best estimate.
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Frequently Asked Questions
This calculator provides a rough estimate based on national average material and labor costs. Actual costs may vary depending on your location, contractor rates, and specific roof conditions. Always consult a professional for a precise quote.
Key factors include roof size, pitch (steepness), material type, whether the old roof is removed, labor rates, and regional pricing. Additional factors like underlayment, flashing, and permits are not included.
Removing the old roof adds cost but allows inspection of the deck and ensures a longer-lasting installation. Laying over is cheaper but may void warranties and can add weight. Consult a roofer for the best option.