Learn what Galvalume is, why it’s ideal for Florida’s climate, how it compares to other roofing materials, and how Roof Nuts can help you install it right the first time.

What is Galvalume?

Metal Roofing FAQs
September 04, 2025•2 min read

FAQ: What Is Galvalume?

Q: What is Galvalume?
A: Galvalume is steel coated with a corrosion-resistant alloy made of aluminum (55%), zinc (43.5%), and silicon (1.5%). This coating gives Galvalume excellent protection against rust and weathering, especially in coastal and high-humidity areas like Florida.

Why Florida Homeowners Choose Galvalume

  • Built for Humid Climates
    Galvalume performs better than plain galvanized steel in Florida’s wet, salty air. The aluminum helps resist rust, while the zinc protects exposed edges and scratches.

  • Longer Lifespan
    Galvalume roofs can last 40+ years with proper installation and minimal maintenance—especially valuable in hurricane-prone areas.

  • Affordable Alternative to Aluminum
    Galvalume is more cost-effective than pure aluminum roofing, while still delivering solid protection and performance.

  • Energy Efficient
    The light color options reflect sunlight, helping reduce attic heat and air conditioning costs—perfect for hot Florida cities like Jacksonville, Orlando, or Tampa.

  • Versatile for Many Roof Styles
    Whether it’s standing seam, 5V crimp, or corrugated panels, Galvalume fits well with many residential and coastal architectural styles.

Is Galvalume Right for Coastal Homes?

Yes, but with some considerations. While Galvalume is more corrosion-resistant than galvanized steel, homes directly on the coast (within 1,500 feet of salt spray) may benefit more from aluminum roofing, which doesn’t rust. For homes slightly inland, Galvalume is an excellent balance of performance and cost.

Does Galvalume Roofing Rust?

Galvalume resists rust far better than traditional galvanized steel. Over time, it may develop a protective patina, but this doesn’t affect its structural integrity. It holds up well against Florida’s heavy rains and high humidity.

Can Galvalume Be Painted?

Yes, though it usually comes in a factory finish that doesn’t require painting. If painting is desired, be sure to use a coating system designed for metal roofs to ensure adhesion and longevity.

Galvalume Roofing Installed by Roof Nuts

At Roof Nuts, we install Galvalume metal roofs across Florida—especially in areas like Jacksonville, St. Petersburg, and Port St. Lucie. Our team understands the unique challenges of Florida’s climate and builds roofs that last.

✅ Expert installation
✅ Florida code compliance
✅ Fast turnaround times
✅ Free roof estimates

Call Roof Nuts today at 904-694-3426 to schedule your Galvalume metal roofing consultation.

More FAQs:

Q: Is Galvalume more affordable than aluminum?
A: Yes. Galvalume is typically 20–30% less expensive than aluminum and still offers strong corrosion resistance in most Florida environments.

Q: How long does a Galvalume roof last in Florida?
A: Expect 40–50 years with proper maintenance, even in hot, humid conditions.

Q: Can Galvalume withstand hurricanes?
A: Yes. When installed to Florida Building Code standards, Galvalume roofing panels can resist uplift from hurricane-force winds.

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