How Long Do Metal Roofs Last: What Homeowners Should Know

December 22, 2025 | Filed under: News

When homeowners such as yourself start thinking about replacing their roof with metal, one of the first questions is, “how long do metal roofs last?” Metal roofing is known for its incredible durability, low maintenance, and long-term value. While traditional asphalt shingle roofs only last 15-18 years on average, a high-quality metal roof can last 50-70+ years; and premium metals can last a century!

As we go deeper into this article, we will learn that there is a lot more to the lifespan of metal roofing than meets the eye; such as: different types of metal, paint coating technologies and roofing styles all have an impact on the lifespan of a metal roof. This guide will break everything down so you know exactly what to expect.

Why Metal Roofs Last So Long

The impressive lifespan of a metal roof comes from 3 core advantages: the natural durability of metal, modern protective coatings, and the engineering for the roofing systems ability to withstand extreme environmental conditions. Unlike asphalt shingles, metal doesn’t rot, curl, or degrade overtime. It’s immune to insects, moisture and mold which all lead to roof replacements. Below is a quick list to sum up how metal roofing is more durable that asphalt shingles:

  • Highly Durable Materials
    • Metal doesn’t rot, absorb moisture, or break down like organic roofing products. The material itself does not decay which leads to the roof holding its strength for a significantly longer period of time.
    • Depending on what metal roof you get, you may experience the metal warping due to poor installation. The warping or oil-canning is caused by installing the metal in such a way that it has no room to expand or contract as the weather changes. With a great contractor that uses great installation methods, this shouldn’t be an issue. The picture below this list is for you to reference to this topic.
  • Advanced Coatings Protect the Metal for Decades
    • Modern coatings such as Galvalume® and Kynar® (PVDF) paint systems protect the metal from rust, fading, and UV damage. This adds decades to the roofs lifespan.
  • Built to Withstand Extreme Weather
    • Metal roofing withstands UV Radiation, high winds, snow loads, hail, and extreme temperatures. It expands and contracts safely using engineered fastening systems
  • Fire Resistance
    • Metal is completely non-combustible, greatly reducing the risk of damage from lightning or airborne embers.
    • Many metal roofs receive a Class A fire rating which is the highest available.
  • Efficient Water and Snow Shedding
    • Because the metal is smooth and is interlocking, water and snow run off quickly; reducing leaks, rot, and structural strain.
A common eye-sore that does not affect the performance or lifespan of a metal roof.

Lifespan by Metal Type

Different metals have different levels and ratings of long-term performance. Here’s a quick comparison of the most popular metals used:

Steel is the most commonly used material for metal roofing.

  • Steel Roofing – Expect 40-70 years depending on the paint system and galvanization.
    • Steel is the most common metal roofing material. Lifespan varies based on thickness (gauge), galvanization, and paint systems. Galvalume Steel typically lasts the longest.
    • Galvanized steel – A steel core that is dipped in zinc
    • Galvalume steel – A steel core that is dipped in zinc and then aluminum for better protection against corrosion and surface rusting.
  • Aluminum Roofing – Expect 50-70+ years
    • Aluminum is the most ideal material for humid and coastal regions because aluminum doesn’t rust. Aluminum roofs have a good chance on exceeding the 70 year life. The only downfall of aluminum is that it’s less durable than steel.
    • If you get an aluminum metal roof, just be sure to not sign away your aesthetic claims with your insurance.
  • Copper Roofing – Expect 75-100+ years
    • Copper is one of, if not the most, long-lasting roofing material on the planet. the protective patina helps the copper last about a century!

Lifespan of Hidden Fastener Standing Seam vs. Exposed Fastener

Hidden fastener standing seam uses concealed fastening systems which allows maximum durability and longevity. It’s important to note that some contractors sell exposed faster systems while giving it the name of standing seam. Exposed fastener is NOT true hidden fastener standing seam. The big differences between the two systems are how the roofing system is fastened to the roof deck and the quality of metal used. Standing seam typically uses 26 or 24 gauge metal. Exposed fastener metal is typically used in 28 or 29 gauge metal; which is thinner than the standing seam metal.

Standing seam metal roofing has an average lifespan of 60-65 years. In some cases, the roof can last longer than 70 years! Exposed fastener however, will only last from 25-40 years. Exposed faster systems stand out to homeowners because of the price point.

What Affects How Long Metal Roofs Last?

The lifespan of a metal roof depends on several factors, regardless of the materials used.

  • Installation Quality
    • A poor or improper installation of a metal roof can cut decades off the roofs lifespan
  • Climate
    • Climates dictate what metal is best to install. For example, Aluminum metal roofing is going to last longer in a coastal climate than a steel roof would because of the salt in the air that would cause steel to rust but not aluminum.
  • Coating Quality
    • The coating quality can be the difference of 10-20 years. The highest quality Kynar® (PVDF) paint coating will maximize the lifespan of your metal roof as it reflects heat and UV rays instead of absorbing them.

Maintenance

The term maintenance in a roofing aspect can be very broad; but with the correct and a truly professional installation method, you won’t have to worry about any shingles or metal panels becoming loose overtime like a regular asphalt roof. The term maintenance gets narrowed down to keeping gutters, drains, and flashings free of debris when related to metal roofing. High-quality installation methods will take care of the flashing problem, but keeping gutters and drains clear should be a regular task, regardless of the type of roof you have. If you notice any debris build up around a flashing, such as the back of a chimney or skylight, then the debris needs cleared regularly to reduce the risk of a leak forming.

How to Maximize the Lifespan of a Metal Roof

To ensure your roof reaches its maximum lifespan:

  • Choose the right metal for your region/climate
    • The biggest one to remember is you want aluminum if you live near the coast
  • Use Kynar® (PVDF) coatings
    • There are other coatings available but PVDF is on almost every high-quality metal roofing product
  • Keep gutters, valleys, and flashings free of debris