Metal Roofing Calculator — Panels & Screws

How does the metal roofing calculator work?

Panel coverage = panel width (ft) × panel length. Divide sloped roof area by panel coverage and add ~10% for cuts. Plan ~0.8 fasteners per ft² and one 10-ft ridge cap piece per 10 ft of ridge.

Which guide explains this in more depth?

Panel roofs waste differently from shingles: ribs, hips and valleys all change the number you order. Read the metal roofing calculator waste factor guide for the full worked example.

What else do people ask about this calculator?

How many metal panels for a 2000 ft² roof?

With 36 in × 12 ft panels (36 ft² coverage each), about 61 panels including 10% waste.

How many screws per metal roofing panel?

Roughly 30 fasteners per 3 ft × 12 ft panel (screws every 12–24 in on ribs and eaves).

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