Will Metal Roofing Rust?

Metal roofing is one of the most durable and energy-efficient roofing choices available today. It’s popular for both homes and commercial buildings thanks to its strength, style, and long lifespan. But many homeowners still ask: Will metal roofing rust over time?

In this in-depth guide, we’ll explain how rust forms, what materials are most resistant, and how you can keep your metal roofing protected for decades.

Do Metal Roofs Rust? A Simple Guide

What Is Rust and How Does It Happen?

Rust is a reddish-brown substance that forms when iron or steel reacts with oxygen and water. It weakens metal over time, especially in humid or rainy environments.

If your roof is made from bare steel or iron without a protective coating, it will likely rust. However, most modern metal roofing materials are treated to prevent this from happening.

✅ Quick Fact: Aluminum does not rust. That’s one reason it’s often used in roofing near coastal areas where saltwater speeds up rusting.

Rust vs. Corrosion: What’s the Difference?

While rust is one type of corrosion, not all corrosion is rust. Corrosion is any chemical reaction that breaks down metal—this includes oxidation, rusting, and other types of decay. Understanding this helps you choose the right material and know what signs to look out for.

Which Metal Roofing Materials Resist Rust Best?

Some types of metal roofs are much better at fighting rust. Here’s a quick look at common options:

• Galvanized Steel – Coated with a layer of zinc to stop rust.
  
  
• Galvalume Steel – Has a mix of zinc and aluminum for even better protection.
  
  
• Aluminum – Naturally rust-proof; ideal for coastal areas.
  
  
• Copper and Zinc – Develop a natural patina that protects the metal instead of rusting.
  
  

💡 Tip: When choosing a metal roof, ask your contractor about coatings like Kynar 500® paint systems, which offer top-tier UV and corrosion resistance.

The Secret to Rust-Free Metal Roofing

The real defense against rust is a good protective finish. Factory-applied paint and coatings block moisture and air, helping your roof last 40–70 years or more with very little upkeep.

Common Myths About Metal Roofing

Many homeowners worry about metal roofing rust, noise, or other issues due to common myths. Let’s clear up a few of the biggest misunderstandings:

Myth #1: Metal Roofing Attracts Lightning

No, it doesn’t. Metal roofs do not increase your risk of a lightning strike. In fact, metal is non-combustible, so it can make your home safer during storms.

Myth #2: Metal Roofs Are Always Noisy

With proper insulation and underlayment, metal roofs are just as quiet—sometimes quieter—than asphalt shingles during rain or hail.

Myth #3: All Metal Roofs Get Red Rust

Today’s metal roofing is built to resist rust. Coatings like Galvalume® and baked-on enamel paint help prevent rust even after decades of weather exposure.

Myth #4: Metal Roofs Dent Too Easily

While soft metals like aluminum can dent in extreme hailstorms, most metal roofs are rated to withstand wind and impact. Thicker panels and proper installation make a big difference.

Myth #5: Metal Roofing Gets Too Hot in Summer

Actually, metal reflects solar heat. Light-colored and cool-coated metal roofs can lower cooling costs by up to 25%. That’s why they’re used in hot climates around the world.

Truth About Metal Roofing Rust and Other Myths

If installed properly with quality materials, modern metal roofing rarely rusts and performs extremely well in all climates.

Who Is Fix It Right Metals?

Fix It Right Metals is a leading provider of premium metal roofing solutions. With decades of experience, they focus on craftsmanship, quality materials, and helping customers enjoy worry-free roofs that last a lifetime.

Will My Metal Roof Rust Over Time?

Why Most Metal Roofing Doesn’t Rust

With today’s technology, most metal roofing rust concerns are avoidable. Pre-coated panels, proper installation, and yearly maintenance go a long way.

Plus, many roofing systems come with 30–50 year warranties against rust and corrosion.

Ways to Protect Your Metal Roof

• ✅ Inspect your roof annually
  
  
• ✅ Clean off leaves and debris
  
  
• ✅ Reseal scratched or damaged areas
  
  
• ✅ Keep gutters and downspouts clear
  
  
• ✅ Reapply coatings as needed
  
  

🔧 Maintenance Tip: Use a soft brush or hose to clean dirt off your metal roof. Avoid harsh chemicals or pressure washers, which can wear away the protective finish.

When Should You Reapply the Protective Coating?

Most protective coatings last 20–30 years. If you live near the ocean, in a rainy climate, or under lots of trees, check your roof more often. Early signs of fading, chipping, or exposed metal mean it’s time for a recoat.

Final Thoughts: Will Metal Roofing Rust?

So, will metal roofing rust? Not if you choose the right materials and take care of it.

Modern metal roofing is built to last, with layers of protection to keep rust far away. Whether you’re building new or upgrading an old roof, going metal is a smart choice that’s low maintenance, eco-friendly, and cost-effective over time.

Want a rust-proof metal roof that lasts for decades?
Get in touch with Fix It Right Metals for expert advice, top-quality materials, and professional installation.