How Long Does a Metal Roof Last? 5 Factors That Make or Break Its Lifespan

If you’re wondering how long does a metal roof last, the answer depends on the type of metal, your local climate, and how well the roof is installed and maintained. In general, metal roofs are known for their exceptional durability—lasting 40 to 70 years, sometimes even longer.

But not all metal roofs are created equal. While some will easily outlast traditional asphalt shingles by decades, others may fail early due to common, preventable issues. This post breaks down the 5 most important factors that affect how long your metal roof really lasts—and what you can do to get the most life out of it.

Average Lifespan of a Metal Roof by Type

Not all metal roofs use the same material—and lifespan varies significantly by type:

• Aluminum Roofing: 40–50 years. Lightweight, rust-resistant, and good for coastal climates.
• Steel Roofing: 40–70 years. Galvanized and Galvalume® steel are common options, with coatings that resist corrosion.
• Copper Roofing: 70+ years. Premium material known for beauty and longevity—often lasts over a century.
• Zinc Roofing: 60–100 years. Self-healing surface that resists scratches and corrosion.
• Tin Roofing (rare today): 30–50 years, typically used in historic restorations.

So, if you’re asking how long does a metal roof last, the honest answer is: it depends. But even the lower end of the range often exceeds that of a standard asphalt roof, which typically lasts 15–30 years.

5 Factors That Make or Break a Metal Roof’s Lifespan

1. Installation Quality

Even the best materials won’t last if the roof is poorly installed. Improper fastener placement, underlayment issues, and incorrect flashing can all lead to leaks and premature failure. Always hire a contractor with metal roofing experience.

2. Material Type and Coating

As shown above, different metals last different lengths of time—and protective coatings like Kynar 500® can significantly improve weather resistance and color retention.

3. Local Climate Conditions

Hail, salt air, heavy snow, or high UV exposure can affect how long a metal roof lasts. Coastal areas often require corrosion-resistant options like aluminum or zinc.

4. Roof Pitch and Design

Flatter roofs may allow more water or snow buildup, increasing wear. Steeper pitches help shed moisture and debris faster, reducing long-term damage.

5. Maintenance Habits

While metal roofs are low-maintenance, they’re not zero-maintenance. Keeping gutters clear, checking fasteners, and removing debris can all extend roof life significantly.

If you’re committed to getting the most out of your investment, understanding these factors is just as important as asking how long does a metal roof last in general.

How a Metal Roof Compares to Asphalt

If you’re comparing roofing options, one of the biggest questions is: how much longer does a metal roof last than shingles? On average, a metal roof lasts two to three times longer than a standard asphalt shingle roof.

Asphalt shingles typically last 15 to 30 years, depending on installation quality, attic ventilation, and regional climate. In contrast, a properly installed metal roof can last 40 to 70+ years, with premium materials like copper or zinc pushing well past the 100-year mark.

That means homeowners who choose metal may avoid at least one full replacement cycle, saving tens of thousands of dollars in future materials, labor, and tear-off costs. And while metal roofing comes with a higher upfront price tag, the longevity, energy efficiency, and lower maintenance needs more than make up the difference over time.

So when you ask how long does a metal roof last, you’re not just asking about years—you’re asking how long you can go without the stress and cost of a new roof.

Average lifespan comparison:

• Asphalt shingles: 15–30 years
• Metal roofing: 40–70+ years

So, how long does a metal roof last compared to shingles? Long enough that many homeowners never have to replace it again.

Signs Your Metal Roof May Be Nearing the End

Even with great materials and installation, every roof has a lifespan. Here are signs it may be time to start thinking about replacement:

• Visible rust or corrosion in key areas
• Widespread color fading or chalking
• Loose or missing fasteners
• Leaks or interior water stains
• Warping or separation near seams

If you’re starting to ask yourself how long does a metal roof last because of visible damage, it may be time for a professional inspection.

Final Thoughts

So, how long does a metal roof last? With the right materials, installation, and care, your roof could last 50 years or more—and in many cases, a lifetime. It’s a smart investment for homeowners looking for durability, performance, and long-term value.

If you’re considering a new metal roof or wondering whether your current one is holding up, reach out to BCM Roofing. We’ll give you an honest assessment and expert recommendations tailored to your home and climate.

FAQ: How Long Does a Metal Roof Last?

What’s the longest-lasting type of metal roof?

Copper and zinc roofs can last 70–100 years or more when properly installed.

Does a metal roof need to be replaced?

Eventually, yes—but not for decades. Many metal roofs last 2–3 times longer than asphalt shingles.

Can I make my metal roof last longer?

Yes. Keep it clean, clear of debris, and schedule periodic inspections to catch issues early.

Does metal roofing rust?

It can—especially if the protective coating is damaged or if it’s the wrong type of metal for your environment. Galvanized coatings and proper installation prevent most rust issues.

Is a metal roof worth the extra cost?

Absolutely. When you ask how long does a metal roof last, you’re really asking if it will pay off over time—and the answer is yes, in longevity, energy efficiency, and fewer replacements.