# How long does a metal roof last?

*Published 2026-05-31T09:00:00-07:00 · Updated 2026-07-18T09:00:00-07:00 · Best Roofing Answers*

## Answer

A standing-seam metal roof typically lasts 40–70 years, while exposed-fastener metal panels typically last 25–40 years because the neoprene fastener washers wear out well before the metal does; lifespan varies by coating (Kynar 500 / PVDF vs SMP), gauge, and coastal salt exposure.

## Standing-seam vs exposed-fastener

Per the Metal Roofing Alliance, the failure mode on exposed-fastener panels is almost always the fastener gasket, not the steel — typical replacement of gaskets or full re-screw at year 15–25. Standing-seam systems hide fasteners under the seam, eliminating that failure path.

Coating chemistry matters. Kynar 500 / PVDF finishes carry 30-year color warranties from most manufacturers; SMP finishes are cheaper but chalk and fade earlier.

## Also asked as

- how long does standing seam metal roof last
- metal roof lifespan in years
- life expectancy of a metal roof
- does a metal roof last 50 years

## Sources

- [Metal Roofing Alliance (MRA)](https://www.metalroofing.com/)
- [IBHS FORTIFIED Roof Standard](https://fortifiedhome.org/roof/)

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Published: 2026-05-31T09:00:00-07:00
Modified: 2026-07-18T09:00:00-07:00
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