To determine if your metal roof needs re-coating, talk to a roofing professional.
It will all depend on your home’s size and geographic location, as these factors affect how long the initial coating lasts. Generally, you should re-coat 5 to 12 years after your roofing installation. The coating used to maintain your metal roof should have the same qualities as those used in the manufacturing process. The coatings used during manufacturing may eventually lose their protection capacities, and your metal roof may need to be re-coated. How Often Should the Protective Coating be Reapplied? It provides enhanced rust resistant protection, especially for metal roofs in coastal cities where the salty air can wreak havoc on an unprotected roof. Also known as galvalume, it was patented by Bethlehem Steel in 1972. Zinc, Silicon and Aluminum – Rather than using zinc and aluminum on their own to coat steel, these two can be combined with silicon to offer additional benefits. This way, you’ll have a long-lasting roof without worrying about any corrosion. It also requires very little maintenance.Īluminum – Aluminum is highly resistant to rust and by coating steel with it, you’ll have an added layer of protection to prevent the steel roof from rusting. One of the benefits of galvanized steel is that its long lasting, about 25 to 50 years. Zinc – Commonly known as galvanization, steel is coated with a layer of zinc oxide to make it rust-resistant.
There are a number of protecting coatings that will protect your metal roof from rust and corrosion. Since copper and tin doesn’t contain iron they are naturally rust-resistant, but they are susceptible to tarnishing, especially in coastal climates. When considering a steel roof, make sure the roofer uses galvanized steel. The protective galvanized coating prevents oxidation and rust. On the other hand, steel needs to be galvanized in order to prevent corrosion. It’s naturally rust-resistant, durable, lightweight and recyclable which is why Aluminum is one of the most popular metal roofing materials. Aluminum is actually a naturally occurring chemical element that is often considered the world’s most abundant metal. But only metals that contain iron, like steel can rust. There are a lot of different types of metals like steel, copper and aluminum, for example, that are used in roofing materials. However, many homeowners want to know: will my metal roof rust? Rust Resistant Properties It’s fire and pest resistant and is available in a variety of colors and styles, making it ideal for any type of construction project. It offers a wider range of benefits such as a longer lifespan, energy efficiency, and the ability to better withstand extreme weather conditions when compared to traditional roofing materials. Metal roofing has become a preferred choice among homeowners.
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