Metal Roofing Calculator

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Estimate metal roofing materials for your project including panels, screws, ridge cap, and trim. Enter your roof dimensions and panel specifications to get an accurate materials list.

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Enter Your Measurements

Results

Panels Needed

33

panels

Screws

792

screws

Ridge Cap Pieces

4

pieces

Closure Foam Strips

66

strips

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Formula

Panels = (Roof Area รท Panel Area) ร— 1.05 | Screws = Panels ร— Panel Length ร— 1.5

How to Use This Calculator

How to Use

  1. 1

    Enter the total roof area in square feet.

  2. 2

    Enter the panel coverage width in inches (typically 24-36 inches).

  3. 3

    Enter the panel length from eave to ridge in feet.

  4. 4

    Enter the total ridge length in feet for ridge cap calculation.

Frequently Asked Questions

Frequently Asked Questions

How long does a metal roof last?

A quality metal roof lasts 40 to 70 years depending on the material. Standing seam steel lasts 50+ years, while aluminum and copper can last even longer.

How many screws per metal roofing panel?

Exposed fastener panels typically use 1 to 1.5 screws per linear foot of panel. A 16-foot panel needs approximately 20-24 screws.
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About This Calculator

This calculator uses the formula: Panels = (Roof Area รท Panel Area) ร— 1.05 | Screws = Panels ร— Panel Length ร— 1.5. All calculations follow industry-standard methods. Results are estimates โ€” always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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