Estimate complete roofing materials including shingles, synthetic underlayment rolls, roof nails, and drip edge.
🏗️ Roofing Material Calculator
Total Squares
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Underlayment Rolls (10 sq/roll)
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Nails (lbs)
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💡 Pro Tip
Install drip edge along both the eaves and rakes of the roof. This keeps water from curling back under the shingles and rotting the wooden fascia and roof decking.
Frequently Asked Questions
Q: What underlayment is best for roofing?
Synthetic underlayment is stronger, lighter, and more water-resistant than traditional felt paper. Use 15-lb felt for budget jobs and 30-lb felt or synthetic for premium quality.
Q: How many nails are used per shingle?
IRC code requires 4 nails per standard shingle. In high-wind areas, use 6 nails per shingle. This equates to roughly 320–480 nails per square.

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