Known for its durability, quick installation, and design versatility, metal is one of the most popular roofing options. However, though it has many benefits, a metal roof is susceptible to a few problems, especially if it’s poorly maintained. One such issue is rust. Commonly characterized by a reddish-brown color, rust is a typical problem for most metal surfaces. To better understand how it forms and how to prevent it, here are a few things you should know. 

Basics

Before diving into how to avoid it, it’s essential to understand how it starts. Rust is the corrosion we see from a reaction between moisture, oxygen, and iron or iron alloys. Its formation depends on how much moisture is present and how long the metal piece is exposed to the air. Once it appears, it will slowly start to break down the metal, making it brittle and fragile. 

How to Stop Rust from Forming on Metal Roofs

1. Coating

Since rust is caused by exposure to air and moisture, sealing up the surface is critical. New metal roofs usually have rust-resistant coating at the time of installation; however, if not, there are many options available such as elastomeric coating, galvanized coating, and zinc-based paint. Depending on the exact product, these sealants can also protect from excessive heat, snow, and hail.

2. Regular Cleaning

As beneficial as those coatings can be, too much grime and debris can still scratch the surface or cause it to peel off. Furthermore, when there are leaves or twigs piled up in certain areas, it’s easy for moisture to accumulate, which increases the likelihood of rust forming. If your metal roof is beginning to look dirty, have it professionally cleaned. 

3. Repair Rust ASAP

Finally, if you notice some rust forming on your roof, don’t neglect it. If it’s small, professionals can usually clean it up and cover it with a new layer of coating or paint. However, if the damage is widespread, they may need to replace the section entirely. 

Whether you currently have a metal roof that needs to be replaced or you’re interested in having one installed for the first time, get in touch with Stor All Custom Metal Buildings and Roofing. Based in Dothan, AL, they offer a wide variety of high-quality options that will look great with any exterior. You can see examples of their previous projects online, and if you have any questions, don’t hesitate to call them at (334) 685-0175.