The honest answer: decades, not years
A properly installed metal roof in Florida lasts 40 to 70-plus years — three to five times longer than asphalt shingles, which struggle to make it 15 years in our heat and storms. For most Palm Beach County homeowners, a metal roof is the last roof they'll ever buy for that house.
How salt air and sun actually affect metal
Coastal homeowners worry about salt air, and they're right to think about it — but modern metal roofing systems use marine-grade finishes and coatings built specifically for environments like Jupiter Island, Manalapan, and the oceanfront stretches of Palm Beach. Choose the right system and finish, and salt air is a manageable factor, not a dealbreaker.
What shortens a metal roof's life (and how to avoid it)
The fastest way to cut a metal roof's lifespan is poor installation — wrong fasteners, bad flashing, incompatible metals that corrode where they touch. This is why who installs your roof matters as much as what it's made of. Four decades of doing it right is the difference between a 50-year roof and a 20-year headache.
Low maintenance, long life
Metal roofs need little upkeep — periodic inspection, keeping debris out of valleys, and addressing any sealant at penetrations over time. Compared to the repair-and-replace cycle of asphalt in South Florida, a metal roof is genuinely install-it-and-forget-it for most of its life.
Build a roof that outlasts the mortgage
If you intend to keep your home, metal is the roof that keeps up. Ametco has been installing roofs that last across Palm Beach County since 1984 — request a free estimate and we'll spec the system and finish that will give your home the longest life.