If you’re considering a new roof, there’s one option that consistently stands out for its durability, energy efficiency, and long-term value: the metal roof. Unlike traditional asphalt shingles that degrade over time, metal roofing systems are engineered to withstand extreme weather, resist corrosion, and reflect solar heat—making them one of the most reliable and cost-effective choices for homeowners and contractors alike. In this blog series, I’ll be diving into real-world advice, product knowledge, and insider insights to help you understand why a properly installed metal roof can last 40–70+ years, often with minimal maintenance. Whether you’re building a new home, replacing an old roof, or just curious about roofing options, you’re in the right place to learn how metal roofing can protect your investment for decades to come.
To kick things off, I want to keep it simple and answer a question I get asked a lot:
How Long Will a Metal Roof Last?
To be honest, I’m a little biased when it comes to metal roofing—and I’ve got good reason to be.
I grew up in a house that my grandfather built in 1921. In 1937, he installed a metal roof. One day while I was in high school, we were giving the roof its usual rinse (something we did every couple of years), and my dad said:
“Putting on this metal roof was the best decision your grandfather ever made.”
And he was right. We never had roof problems.
The amazing part?
That same metal roof was still on and performing the last time I saw it in 2002. That’s 65 years of durability!
Why Metal Roofs Are Built to Last
It’s no secret that metal roofs last a long time. That’s why it’s a common question:
“How long will a metal roof last?”
And honestly, it depends on a few factors—mostly the material and finish you choose.
Let’s Talk Materials
At Tri County Metals, we prefer to use Galvalume as our base substrate. You can get it in:
- Mill Finish
- Or painted in any of our 40+ color options
No matter which you choose, Galvalume comes with a 25-year warranty.
Many Galvalume roofs already out there have lasted 40 years or more, so it’s reasonable to expect 40 to 50 years of solid performance.
Metal Roof Overview: Quick Facts
| Feature | Details |
|---|---|
| Lifespan | 40 to 70+ years (depending on material & maintenance) |
| Common Material Used | Galvalume (with mill finish or painted options) |
| Paint Coating | Sherwin-Williams Industrial Cool Roof Paint System |
| Color Options | 40+ colors available |
| Base Warranty | 25 Years (Galvalume – mill finish or painted) |
| Paint Warranty | 35 to 45 Years (based on installation type & paint system used) |
| Energy Efficiency | Reflects solar heat, reduces cooling costs |
| Resistance | High resistance to wind, rain, fire, and corrosion |
| Maintenance | Minimal—only occasional cleaning or rinsing recommended |
| Sustainability | 100% recyclable, environmentally friendly |
| Installation Requirement | Edge Certified Contractor recommended for extended warranties |
What About Painted Metal Roofs?
Our painted metal roofs are finished with Sherwin-Williams industrial cool roof paint systems. These coatings aren’t just beautiful—they’re built to last.
So, how long will they last?
Well over 50 years, based on all current indicators.
Warranties typically cover:
- 35 years
- 40 years
- Or even up to 45 years, if certain installation guidelines are followed (like with our Platinum 45 extended warranty).
Final Thoughts
A metal roof is a long-term investment. With the right material and a trusted manufacturer like Tri County Metals, you’re not just getting a roof—you’re getting decades of peace of mind.
Stay tuned—next time, we’ll talk about the importance of hiring an Edge Certified Contractor for your installation.
How much does a metal roof cost?
Metal roofs typically cost $8 to $16 per square foot installed, depending on material and location.
What are the disadvantages of metal roofs?
Metal roofs can be more expensive upfront, may dent from hail, and require professional installation.
How long does a metal roof last on a house?
A well-installed metal roof can last 40 to 70+ years, depending on the material and coating.
How long does a metal roof cost?
This seems to be a typo—if you mean “how much does it cost”, see Q1; if not, please clarify.
How long does a metal roof last in Florida?
In Florida’s harsh climate, metal roofs typically last 40–50 years or more, thanks to their corrosion resistance.
How long does a shingle roof last?
Asphalt shingle roofs generally last 15 to 30 years, depending on quality and weather exposure.
Do metal roofs attract lightning?
No, metal roofs do not attract lightning—they’re just safer conductors if lightning strikes.
What are the pros and cons of metal roofs vs shingles?
Metal roofs last longer and are more durable, while shingles are cheaper and easier to install initially.
Hello! I’m Abdullah, a passionate professional in the field of construction and roofing. I am the proud owner of SJ Roofing & Venting, a leading construction company based in New York. With years of hands-on experience, I write about various construction methods, techniques, and industry insights to share my knowledge and help others in the field. I’m also the founder and main contributor of this website.
