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🧰 Metal Roof Cost Calculator

Estimate materials + trim/flashing + fasteners + labor. Planning tool only β€” not a formal bid.

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πŸ”§ Recommended Roofing Tools & Supplies

Disclosure: This section contains affiliate links. As an Amazon Associate, we earn a small commission from qualifying purchases β€” helping us keep SmartRoofingCalculator free to use.

Golden Rule Retrofit Flashing
Flexible retrofit flashing with EPDM material for shingle roofs and pipes.
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Titebond Metal Roof Sealant
Professional-grade sealant for metal roofs that resists UV and temperature extremes.
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Hillman Roofing Nails
Durable galvanized nails ideal for shingle installation and general roof fastening.
View on Amazon

βœ… Best Practices:
β€’ Use step flashing where roof meets vertical walls.
β€’ Counterflashing required for chimneys.
β€’ Continuous valley flashing improves water shedding.
β€’ Overlap flashing pieces at least 2–4 inches.
β€’ Nail only at top edge to allow water runoff.
β€’ Use corrosion-resistant metals (galvanized, aluminum, or copper).
β€’ Seal all joints with roofing cement.
β€’ Check code for required flashing around penetrations.
β€’ Skylights and dormers demand custom flashing kits.
β€’ Replace damaged flashing immediately β€” leaks spread fast.

❓ FAQ - Roof Flashing Cost & Use

Q: What is roof flashing?
Thin metal pieces installed to prevent water intrusion at joints, valleys, and penetrations.

Q: How much does roof flashing cost per linear foot?
Basic galvanized flashing runs ~$1–$2/lf, aluminum ~$2–$3/lf, and copper can be $5+/lf.

Q: Which material is best?
Aluminum is cost-effective, galvanized steel is durable, copper lasts longest but is expensive.

Q: How much overlap is needed?
Typically 2–4 inches (check manufacturer instructions).

Q: Do chimneys need special flashing?
Yes β€” use step + counterflashing for a watertight seal.

Related: Roof Area Calculator β€’ Underlayment Roll Estimator β€’ Waste Calculator