The First Metal Roof... and the Pope Who Melted It Down for Cannons

Hey friends — Ben here from Iron Brothers Contracting.

So here’s something I think about more than a guy probably should: the Pantheon in Rome. Not just because it’s one of the most badass buildings ever built, but because it had what many consider the first major metal roof in history. And it stood strong for over 1,300 years... until a Pope took it down and melted it into cannons.

Yeah. You read that right.

The Pantheon was built around 126 AD, and it had this massive bronze roof covering the portico—the part with those giant stone columns. The Romans weren’t just throwing up sheet metal either. We’re talking thick, heavy bronze panels forged with craftsmanship we’d still admire today.

That thing lasted over a thousand years, untouched by time or weather.

And then in the 1600s, along comes Pope Urban VIII.

He looked at this architectural masterpiece and thought: “You know what? I could really use some artillery.” So, he stripped that bronze off the roof and melted it down—to make cannons for the Castel Sant’Angelo (his personal fortress).

Let that sink in: the world’s first great metal roof didn’t fail because of time or decay... it got repurposed by the Pope for war. You can’t make this stuff up.

As someone who builds metal roofs every day, I’ve gotta respect that kind of durability. We’re out here trying to give folks roofs that will last 50+ years, but the Romans were already setting that standard nearly 2,000 years ago.

I think about that when we’re installing standing seam, stone-coated steel, or accent roofs. Sure, we’re not using bronze anymore—but the idea is the same: build something strong, beautiful, and lasting.

And unlike Urban VIII, we don’t plan on melting your roof down to make anything explosive. (Although, it might blow your mind how great it looks when it’s done.)

So, if you’ve ever wanted to upgrade to a material with a legacy this epic, let’s talk metal. Roofing that stands the test of time—and hopefully stays on your house, not on the battlefield.