While the average asphalt roof is lucky to last for 20 years, a standard metal roof can hold up for more than three times as long. That doesn't mean these roofs are indestructible, though. Like any building material, metal has its weaknesses. Here are some of the most common issues that can plague steel, aluminum, and copper roofs. 

3 Problems That Often Affect Metal Roofs

1. Corrosion 

Although manufacturers take steps to prevent the corrosion of roofing panels—by painting them with a rust-resistant coating, for example—the metal can still disintegrate in certain circumstances. Cut edges that are exposed to the elements are vulnerable to corrosion, as are the undersides of the panels if moisture gets trapped.

Reactions that speed up corrosion can also occur if the roof is comprised of different kinds of metal that shouldn’t interact with one another. This is why you should only turn to a knowledgeable contractor that’s familiar with metal roofing for installations and repairs. 

2. Leaking 

A professionally installed roof should be watertight. If the contractors attempted to cut corners by leaving gaps or installing the flashing improperly, though, leaks are inevitable. Should you notice any, address them as soon as possible. Otherwise, extensive water damage could result. 

3. Discoloration 

Prolonged UV exposure can deteriorate paint resin, which will produce a whitish residue that gives the roof a chalk-like coating. Fading is also common with metal roofing. And unless every panel is exposed to the same amount of UV exposure, the fading will likely be uneven. Thankfully, reputable paint manufacturers offer warranties that cover excessive discoloration. 

If any of these issues are affecting your metal roof, turn to Lar-Son and Sons Inc. Serving clients within a 50-mile radius of Rhinelander, WI, this 3rd generation family operation has been in business since 1940. Their knowledgeable team is equipped to install, repair, and replace both residential and commercial roofs. They also repair the mistakes that other contractors make. To request a quote for fixing your metal roof, call (715) 362-2769.