Mixing Metals on a Metal Roof? How Galvanic Reaction Causes Roof Failure
What is galvanic reaction, how does it relate to dissimilar metals, and what does it have to do with metal construction?
Galvanic reaction, also called galvanic corrosion, happens when dissimilar metals touch in the presence of moisture. On a metal roof, that can lead to corrosion, rust, fastener failure, staining, and premature system breakdown.
In this video, metal roofing expert Thad Barnette explains:
- What galvanic reaction and galvanic corrosion are
- Why dissimilar metals create problems on metal roofing systems
- Common examples, including copper, steel, aluminum, and fasteners
- How mixed metals can shorten the life of a metal roof
- How to prevent galvanic corrosion during installation and material selection
If you’re wondering whether different metals can touch on a metal roof, or why corrosion is forming around fasteners, trim, gutters, or panels, this video breaks down the cause and the best ways to avoid roof failure. Today on the Metal Roofing Channel, Thad Barnette dives into the science behind galvanic reaction, gives real world examples of dissimilar metals, and explains how to apply this knowledge to metal roofing.
Learn more about which material is best for your project by downloading your free metal roofing materials pros and cons guide.
