The roof Key West was built on
Look out over Old Town and you’ll see it everywhere: the silver, ridged metal roof that has defined Key West for well over a century. That’s the 5V-crimp roof — the island’s iconic “tin roof.” It earned its place the honest way, by shedding tropical downpours, reflecting the sun, and surviving storm after storm on conch houses and Victorian homes alike. It is, quite simply, the classic Key West roof, and it remains one of the best choices you can make for a home down here.
What “5V-crimp” actually means
The name describes the panel. A 5V-crimp panel has a small “V”-shaped rib at each edge and ribs spaced across the face — five V-shaped crimps across a standard panel, which is where the name comes from. The panels overlap at those ribs and fasten through the flat, giving the roof its distinctive ridged silhouette. It’s a simple, time-tested profile, which is part of why it has endured on the island for generations and why it reads as unmistakably Key West.
Why HARC favors it on historic homes
In Old Town’s historic district, exterior changes go before HARC, and the 5V-crimp metal roof is generally well regarded there precisely because it’s authentic to Key West’s history. It’s the profile that belongs on a conch cottage or a Victorian home, the roof these houses wore when they were built. Choosing 5V-crimp on a historic home isn’t just a practical decision — it’s the one most in keeping with the character the district exists to protect. (HARC requirements for your specific property: confirmed through the City of Key West.)
From “tin” to Galvalume and aluminum
The old roofs were genuinely tin-coated steel, and many of the originals served for decades. Today, though, the classic look is built in far better metals. Galvalume — steel coated with an aluminum-zinc alloy — and solid aluminum both deliver the same iconic 5V profile while resisting the salt corrosion that would eventually claim true tin near the ocean. For Key West’s marine environment, that’s a meaningful upgrade: you get the historic appearance Old Town is known for, with modern corrosion resistance built in. On the most exposed homes, aluminum’s natural resistance to salt is especially valuable.
A practical marine and storm roof
The 5V-crimp roof isn’t just handsome — it works. The ridged panels shed water fast, the reflective metal helps with the relentless Key West sun, and properly fastened and detailed, a 5V-crimp metal roof can be engineered to meet Monroe County’s demanding design wind speeds. It’s lighter than tile, kinder to older structures, and built to last for decades when it’s installed correctly. Authentic and durable rarely line up this neatly.
Installed the way it should be
The 5V-crimp roof is straightforward, but doing it right still takes care — proper fastening through the flats, correct overlap at the ribs, and sound flashing at every edge and penetration. We install 5V-crimp roofs in Galvalume and aluminum across Key West, on historic homes and modern ones alike, detailed for the salt and the storms. (Material finishes and warranty coverage: client to confirm.)
Get the classic Key West roof
Call (786) 589-8668 or request a free estimate to talk through a 5V-crimp tin roof for your Key West home.