If you’re looking into metal roofing, you’ve probably heard of two popular terms: Galvalume and Galvanized steel. Both are widely used in roofing, and both provide corrosion protection. So why do we produce our roofing panels with Galvalume?
In brief: Galvalume lasts longer, performs better, and looks cleaner — especially in high-moisture environments where galvanized steel falls short. In fact, Galvalume was specifically engineered to withstand coastal climates like Southwest Florida, where salt and humidity quickly break down galvanized steel. Another key advantage is warranty coverage: Galvalume typically comes backed by strong warranties, while galvanized steel often does not.
Let’s examine more closely what differentiates the two materials.
What’s the Difference Between Galvalume and Galvanized?
In order to see the benefit of Galvalume, it is helpful to understand how both materials are produced:
- Galvanized steel is coated with zinc, which helps protect the underlying steel from rust and corrosion.
- Galvalume steel is covered with a mixture of zinc, aluminum, and silicon for a higher level of protection.
That aluminum content makes a significant difference, particularly when it comes to long-term durability.
Why Do Galvalume Roofing Panels Outperform Galvanized?
- Better Long-Term Corrosion Resistance
Galvalume provides much better corrosion protection than galvanized steel. Due to the presence of aluminum in the coating, Galvalume creates a tougher barrier that withstands moisture, weathering, and the test of time.
In most roofing applications, Galvalume will last two to four times longer than galvanized steel before it begins to show signs of deterioration.
- A Cleaner Appearance That Lasts
One of the primary concerns with galvanized panels is that they have a propensity to form rust spots, particularly at cut edges, fastener penetrations or where the coating has been scratched.
Galvalume resists rust much better, even at weak spots. That translates to fewer visible imperfections, less upkeep, and a better-looking roof over the years.
- Greater Long-Term Value
Though Galvalume panels may be a bit more expensive initially than galvanized, the long-term savings are genuine. With less repair, longer life, and less visual deterioration, Galvalume roofing panels provide more value for your money.
Why We Build With Galvalume
Choosing Galvalume helps ensure:
- Less hassle for property owners
- Longer-lasting structures
- A cleaner, more professional appearance
Whether you’re a contractor, builder, or homeowner, it’s important to know what you’re using. Galvalume is not necessarily the lowest-cost product available, but it is one of the most cost-effective options when you consider the entire life cycle of your roof.
Contact Sunshine Metal Supply today and speak with one of our metal experts about your next project.
