Over the years, metal roofs are becoming popular for all good reasons. They are durable, energy-efficient, and a good investment. Compared to asphalt shingles, concrete tiles, and wood shakes, metal holds up better than other materials. Although it’s highly durable, it might still be prone to rust.

An iron-based metal roofing can suffer from corrosion. When rust and oxidation occur, your roof’s lifespan is likely to shorten. Let’s explore the things you need to know about metal roofs and rust.

Do Metal Roofs Rust?

Yes, steel roofs corrode. As a material, steel is not naturally resistant to rust. Different manufacturing methods, paint systems, and finishes are needed to create a rust-resistant metal roof. With the right protective coating, your roof can fight against oxidation when exposed to the weather. Check out our blog post on how you can avoid rust on your metal roofs.

Examples of Rust-Resistant Technologies

If you’re on the lookout for a metal roof, there are new technologies for corrosion resistance. Here are a few ways to make a rust-resistant roof possible:

Galvalume Steel

A galvalume finish is applied over a steel base sheet. Typically, galvalume roofs are composed of aluminum, zinc, and silicone. Due to its high corrosion resistance, this coating is common in commercial, industrial, and residential applications. 

If you’re living in coastal areas, galvalume is a great option for you. An unprotected roof can easily be damaged by salty air. To protect your investment, apply galvalume and other rust-resistant protection methods. This will slow down the corrosion process in your roofing system.

Galvanized Steel

Also known as zinc coating, galvanized steel is effective in protecting metal roof panels. When you have a galvanized roof, it has a protective alloy coating made of zinc oxide. This coating is what makes the roof surface resistant to rust. 

Aside from rust resistance, galvanized steel isn’t prone to scuffing and scratching. This means your roof can retain its smooth, shiny finish for many years. A galvanized roof can remain intact for about 25 to 50 years, with only minimal maintenance. Its impressive lifespan and mid-level price point are what make galvanized steel popular.

Weathering Steel

Although it looks rustic, weathering steel helps your roof last longer. This finish has a topcoat made of copper, phosphorus, and silicon. When the topcoat gets exposed to elements, the roof panel begins to rust. The good thing is the metal roof only rusts up to a certain point. So, there’s no need to worry about the panel corroding all the way through.

A weathered steel finish is very popular for its unique, gorgeous look. In addition to aesthetics, this finish is durable and extremely resistant to corrosion. The base layer of steel roofing can last between 40 and 70 years. The panels will weather differently according to your area’s climate and environment.

Aluminum Coating

We all know that aluminum is naturally resistant to rust. That’s why aluminum roof coatings are common in the market. When you choose a roof paint option with high aluminum pigment, you’ll have an additional layer of protection. 

A metal roof coated in aluminum is guaranteed to be tough, reflective, and long-lasting. It provides a highly effective barrier against corrosion and rust.

Aside from durability and rust resistance, an aluminum coating can reduce heat transfer through the roof. As a result, this will help decrease your utility costs. 

Why Proper Roof Installation Is Important?

The type of roof and coating method are not the only factors that matter. Another important factor is the roofing company you’ll work with. A properly installed metal roof will not corrode easily. Professional roofers will ensure the panels are attached correctly. In addition, they will apply different anti-rust coatings for added protection. 

Without a doubt, good roofing work will prevent rust and corrosion. Regular roof inspection and repairs are also crucial for long-lasting metal panels. This way, you can expect your metal roof will stay intact for decades to come. 

Hire Our Professional Roofers

To get a galvanized or rust-resistant roof, count on Pittsburgh Metal Roofing today. Our team can install premium metal panels and apply protective coating on the surface. We are experts in dealing with rusty roofs.

If you want to get your project started, feel free to call us! We look forward to working with you soon!