Metal roofs are some of the most durable types of roofing materials available, but even those are not completely impervious to roofing damage. Among the most common problems that plague metal roofs is galvanic corrosion. What is galvanic corrosion and how does it affect the roof? Our team of roofing experts shed some light on the matter.
Galvanic Corrosion In a Nutshell
Galvanic corrosion is a chemical process that causes metal to corrode when it comes in contact with another metal and an electrolyte, which in most cases is water. This corrosion is often seen in its most common form: rusting around screws or along the flashing.
Effects of Galvanic Corrosion
Galvanic corrosion is one of the most significant issues that affect metal roofing. As the corrosion gets worse, the metal weakens, compromising the roof’s resistance against harsh weather conditions. Roof replacement experts strongly recommend getting new roof panels to replace ones that are showing severe signs of galvanic corrosion ASAP.
Preventing Galvanic Corrosion
The damage caused by galvanic corrosion is difficult to repair, with affected metal panels often better off replaced. Still, you can reduce the risk of having this kind of roofing problem by using metal screws with the same corrosion potential as the roof panels. Switching to non-metallic flashing is also a good idea, as well as protecting the roof with weather-resistant coating to keep water away from the metal.
Get Professional Help
Instead of guessing what options to take in order to prevent galvanic corrosion, our experts recommend working with professionals to get better results. Reputable roofing companies that specialize in metal roof repairs and replacement will be more than happy to get you a corrosion-free metal roof.
Prevent galvanic corrosion with help from our team. Roofer Chicks® is the leading roofing company in San Antonio, TX. You can call us at (830) 627-7663 or fill out this contact form to request a quote.