How Often Should You Clean Your Metal Roof?

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One of the great things about owning a metal roof is that it hardly needs any maintenance. You get a roof that’s built to last, and it doesn’t ask for much in return.

But—and there’s always a but—it still needs a little attention now and then. A quick clean, a check-up, and you’re good to go. Ignore it completely, and you might be shaving years off its life.

So, how often should you clean it? Well, that depends. Where you live, the design of your roof, and even the colour all play a role. Let’s break it down.

First Things First: Get It Inspected

Weather Matters

Roof Design Plays a Role

*Bonus Tip* Watch Out for Other Trades

First Things First: Get It Inspected

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.

Weather Matters

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.

Roof Design Plays a Role

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.

Bonus Tip Watch Out for Other Trades

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.

Bottom line? A little maintenance goes a long way. Keep an eye on it, clean it when needed, and it’ll serve you well for decades.

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