Common Issues That Can Affect Your Metal Roof

Metal roofing has been around for decades, though modern metal roof systems are far more advanced than their predecessors. In the past, metal roofing consisted of overlapping sheets of flat or corrugated galvanized steel. Now, however, metal roofing comes in a wide array of styles, metals, colors, and textures to meet almost every imaginable roofing need. Modern metal roofing in Lawrenceville, GA, also provides many other benefits, such as fire resistance, longer lifespan, wind resistance, low maintenance, variety, and overall durability.

Despite these many advantages, however, some common issues can plague metal roofing. Metal roofs are still susceptible to many of the same conditions that can doom roofs of other types, even though they feature improved durability and longevity. Some of these factors are specific to metal roofing, however. Keep reading to learn more about some of the common issues that can affect your metal roof.

Metal Roof

Corrosion or Rust

Depending on the type of metal roofing you have, you could experience corrosion or rust that could degrade both the appearance of your roofing and impact its long-term viability. Galvanized steel roofing can rust when exposed to excessive moisture for long periods of time, particularly when there may be other chemicals present in the water that speeds the chemical reaction along. Many types of metal roofing feature paint or coatings to protect against rust and corrosion, and when they become scratched or damaged, it can provide a gateway for corrosion or rust to begin. Also, bare metal edges when roofing is cut can provide another entry point for rust-causing moisture to undermine your metal.

Fading and Discoloration

Though many modern metal roof products are treated with UV resistant coatings, there can still be color fading over time that can detract from the appearance of your metal roofing. Even the best metal roofs can be marred by biological growths that set up on their surfaces such as algae or moss, especially if you have trees overhanging your roof. That can turn a typically low maintenance metal roof into a continuing cleaning chore.


Though not inherent in metal roofing under normal circumstances, one common problem that stems from an improper installation is a leaking roof. Poor workmanship can lead to small gaps between metal panels that can cause substantial leaks that undermine the entire roof system. Also, careless handling of metal roofing can lead to punctures that likewise allow water in.

Roofer Working on Metal Roof Blow Offs

Another installation-related issue common with metal roofing is blow offs. Blow offs most frequently occur when the flashing on a metal roof isn’t properly installed, which can open seams and peel back laps. That provides a perfect place for wind to stress the roof, which can eventually lead to blown off panels.

Scratches, Tears, and Punctures

While your metal roofing is incredibly resilient and can withstand the force of hailstorms, there are some environmental and human elements that can cause significant damage that will undermine your entire roof. Punctures and tears can be caused by falling debris or heavy treading upon the roof surface. Both punctures and tears will lead to leaks as water will find a way through to the roof decking and cause problems. Even scratches on some types of metal roofing can be a problem, as they damage the coating on the outside meant to protect the metal from the elements. Scratches create the perfect entry point for moisture, which can lead to rusting and corrosion.

Though modern metal roofing represents one of the most affordable and durable roofing materials on the market today, there are a few issues that commonly come up with metal roofs. To learn more about these common issues, contact Preferred Roofing at (678) 395-6880.