How to Prevent Galvanic Corrosion in Metal Roofing

Metal is durable, versatile and energy-efficient, making it one of the most popular commercial roofing systems available today. But it is not without a downside. A metal roof, for instance, can be prone to galvanized corrosion. So, you can gain a better understanding about this issue and how to deal with it, we explain more here.

How Does Galvanized Corrosion Occur in Metal Roofing?

Galvanized corrosion refers to an electrochemical process that happens when one metal comes into contact with a different metal. If you’re investing in a new metal roof this season, make sure the system comes with the proper metal combinations. This avoids galvanized corrosion and ensures your metal roof can deliver the reliable, long-lasting performance weather performance you expect.

How Can You Prevent Galvanized Corrosion?

Avoiding galvanized corrosion starts with your choice of metal roofing. You should consider getting steel panels with a zinc-aluminum, or galvalume®, coating. By replacing the galvanizing process in metal roofs, galvalume allows for a better, more effective protective layer that eliminates the potential for corrosion. However, if you still want to go for galvanized metal panels, you’ll want to make sure they don’t come into contact with lead and copper.

Avoid using lead roof jacks for pipe penetrations because they increase the risk for corrosion. Contact between copper and galvanized metal panels will also cause a negative reaction because copper can eat through metal when exposed to condensation. Learning more about galvanic reactions between dissimilar metals goes a long way in ensuring your new roofing remains durable and corrosion-free.

Working with Scro’s Roofing Company, one of the area’s premier roofing and gutter companies, for your metal roof installation can help you with this. Aside from being fully licensed, insured and certified, we have the necessary knowledge about galvanized corrosion in metal roofing, along with ways to avoid it. And, when you choose us to handle the job, expect your commercial metal roof installation to run smoothly from start to finish. We proudly serve Clayton and Raleigh, NC, and their nearby areas. Call us today at (919) 461-0937, or fill out this contact form to schedule your roof evaluation.

We had significant hail damage due to the May 2016 hail storm in Cary, and warded off all the storm chasers that came through our area for 2 months after. I called Scro’s Roofing after the insurance adjusted had written off the roof, and they worked us into their busy schedule. Amazing job done by an amazing and hard-working crew. I was impressed by the way they used tarps to protect the landscaping around the house, and Patricia was pretty particular about cleaning up after the crew. Danny was a pleasure to work with, and he provided several improvements to our roof like a installing a chimney cricket and ridge vents. We used Moire black shingles and the roof looks...

Larry O. | Cary, NC

In life you get what you pay for and this is certainly true with Scro’s Roofing. There are so many “fly be night” roofing companies out there who do not have the long standing customer service and support that a local roofing company can offer. Everyone should take the time to educate themselves about the roofing process and the track record of the company, as this is a very larger investment and an area where you don’t want to cut corners. The team at Scro’s Roofing provided me with many educational links and never pressured me into a sale. They wanted to ensure that I fully understood the process and trusted that I would make an intelligent decision. This sharing...

Kevin A. | Wake Forest, NC

Scro’s Roofing installed a new roof on our home and everything went exactly as planned and scheduled. The installation crew covered all our plants and deck when removing the roof and then cleaned up perfectly when the job was done. We were kept informed all along the job from start to finish so we knew how and when everything would be done. I’ve never experienced a contractor, a company or an owner like Danny who worked with us on every detail. Further, we had gotten several other quotes with Scro’s being the best. This project couldn’t have been done more smoothly… We greatly appreciate Danny the owner and Sarah our scheduling contact. They both were there for all and every...

Joe V. | Cary, NC

We just had our roof done by Scro’s Roofing, and we are very happy with the results. Danny and his office were very helpful in answering all of my questions. I did a good bit of research beforehand, and after talking with Danny, I had a lot of confidence that they are up to date on best practices and latest materials. In particular, I liked that they hand nail the shingles, use a synthetic underlayment instead of tar paper, install a drip edge, and provide a 10-year labor warranty. The thing about getting a new roof is that most people may not find out whether the installer did a bad job or used inferior materials for 5-10 years when they...

Matt B. | Cary, NC

The big hail storm of May 2, 2016 did extensive damage to our roof (and Leaf-Guard gutters as well). Our insurance company appraised the roof and said it all needed to be replaced. My first choice was again Scro’s Roofing. I was not about to use one of the “storm chasers” that descended on our neighborhood like carpetbaggers from who knows where. Danny, the owner of Scro’s Roofing looked up my record from seven years ago and was able to give me an estimate almost immediately from the information he already had on file. Their estimate was within a couple percent of what our insurance had already written a check which made the decision to go with Scro’s Roofing again...

David C. | Cary, NC

I had a great experience working with Danny and his team. Danny even recommended a less expensive roofing product based on our needs. Sarah was so helpful and accommodating throughout the process. I wish all home repairs/renovations were this easy and professional. A wonderful company to work with!

Kate L. | Cary, NC