How Often Should You Clean Your Metal Roof?

Think of it like a health check-up. You might feel fine, but a professional can spot things you’d miss. A bit of mildew, a scratch here, some standing water there—small problems that, if ignored, could turn into big expenses.

A rule of thumb? Twice a year is ideal—once in the spring, once in the fall. But if you live in an area with extreme weather— heavy snowfall, or just lots of trees dropping debris—you might want to check it more often.

Live near the coast? Salt in the air can cause corrosion if left unchecked. Got trees nearby? Leaves and branches can pile up, trap moisture, and lead to damage.

After a big storm, don’t assume your roof is fine just because it looks okay from the ground. Get someone up there to check. Catching problems early means you won’t be dealing with leaks or costly repairs down the line.

Flatter roofs collect more debris. Steeper ones shed water better but might still need a check-up after heavy weather.

And here’s something you might not have considered—colour. A white roof will show dirt and streaks more than a black one. If you want it looking spotless, you may need to clean it more often.

Ever had work done on your home? Plumbers, electricians, HVAC installers—they’re all great at what they do, but they don’t always think about your metal roof.

Scratches, scuffs, even the wrong materials touching your roof can cause corrosion. If you’re having work done, make sure your contractor knows how to protect your metal roof.