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      How Long Does A Metal Roof Last? (Complete Guide)

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      how long does a metal roof last
      • February 1, 2024
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      How Long Does A Metal Roof Last? Metal roofs in Australia typically last 40-70 years, with variations based on material. Aluminum lasts 40-60 years, copper 50-100 years, and zinc can endure 100 years or more.

      MaterialAverage Lifespan
      Aluminum40–60 years
      Tin 40-70 Years
      Steel 40-50 Years
      Copper50–100 years
      ZincUp to 100 years or more

      When you think about roofing in Melbourne or Canberra, you might immediately conjure up images of our classic terracotta tiles or traditional fibro shingles. But have you ever considered metal roofing

      Not only does it look sleek and modern, but it can also be a fantastic long-term investment for your Aussie home. So, just how long can a metal roof last in Australia? Let’s dive in!

      black metal roof sheets

      How Long Does A Metal Roof Last In Australia?

      On average, homeowners can expect their metal roofs to last anywhere between 40–70 years. But, as with everything, the devil is in the details:

      • Quality of Material: Not all metal roofs are created equal. Materials like zinc or copper tend to have a longer lifespan, sometimes even surpassing the century mark.
      • Installation: A correctly installed roof ensures longevity and minimizes potential issues down the track.
      • Maintenance: Periodic roof inspection and timely repairs can significantly extend a roof’s lifespan.
      How Long Does A Metal Roof Last

      What Are The Top 5 Metal Roof And How Long Do They Last?

      Steel Roofing

      With proper installation and routine maintenance, a steel roof is not just a short-term home improvement—it’s a long-term investment. Homeowners can confidently anticipate their steel roof to stand tall and protective for over 50 years.

      Tin Roofing 

      At its core, a tin roof is built to endure. Typically, manufacturers offer warranties spanning around 40 years. However, when maintained properly and depending on various factors like installation and local climate, a tin roof can stand strong and protective for 40–70 years.

      Copper Roofing

      The natural properties of copper make it resistant to many elements that degrade other materials. With proper installation and care, a copper roof will easily shield your home for over 50 years. And here’s where it gets impressive: in ideal conditions, and with the gentle touch of time, some copper roofs have been known to last for more than 200 years.

      Corrugated Metal Roofing

      When it comes down to corrugated metal roofs, how long can we expect these roofs to stand the test of time? At the heart of the matter, corrugated metal roofs have been designed to last, and with proper care, they can serve your structure for up to 50 years or even more. 

      Aluminium Roofing

      One of the standout qualities of an aluminium roof is its impressive longevity. On average, homeowners can expect an aluminium roof to protect their home for up to 50 years. That’s half a century of dependable coverage!

      Aluminium roofing, with its blend of durability, energy efficiency, and quick installation, offers homeowners a roofing solution that’s hard to overlook. If you’re looking for a long-term roofing investment, especially if you’re near the coast, aluminium might just be the shining choice.

      How Long Does A Corrugated Metal Roof Last

      The typical corrugated metal roof can serve diligently for 30-45 years. Yet, don’t be surprised if with some tender loving care, they outlast their predicted shelf-life. High-quality corrugated roof panels, depending on the metal type, can shield a structure for a solid 50 to 60 years. 

      Corrugated metal roofs, with their rugged charm, offer decades of protection. Their lifespan isn’t just a testament to their build but also to the care they receive. With the right steps and conditions, they might just surpass their expected tenure, proving to be both a practical and aesthetically pleasing choice.

      Do Metal Roofs Rust Over Time?

      Absolutely, metal roofs can exhibit rust over time. The presence of iron in the metal, when it comes into contact with moisture, can produce those telltale reddish rust stains. Such rusting doesn’t just mar the visual appeal of the roof but can compromise its structural integrity, potentially jeopardizing the safety of your property and loved ones.

      While metal roofs can indeed rust over time, proper care, maintenance, and the right preventive measures can significantly extend their life and keep them looking pristine. Remember, with the right approach, your metal roof can remain both a protective shield and an aesthetic asset for your home.

      Factors That Can Decrease The Longevity Of A Metal Roof?

      Factors That Can Decrease The Longevity Of A Metal Roof

      Low-Grade Coatings 

      Not all coatings are created equal. A subpar coating can expose the metal underneath to moisture, leading to potential rust and corrosion. High-quality coatings, on the other hand, offer enhanced protection, ensuring the roof’s longevity.

      Roof Slope and Water Drainage

      The slope of a roof directly influences its ability to drain water. A steep slope ensures rapid drainage, preventing water accumulation. In contrast, a flatter slope might result in ponding, which can hasten deterioration.

      Moss and Metal Roofs

      While moss growth isn’t typically synonymous with metal roofs, they’re not entirely immune. Organic debris can foster moss formation. Especially in shaded areas or parts of the roof facing north, moss finds a conducive environment. Close proximity to trees can further amplify this problem.

      Impact of Temperature

      Metal expands and contracts with temperature variations. Consistent fluctuations can potentially impact the integrity of the metal over time, leading to wear and tear.


      The best of metals can falter if not installed correctly. Adhering to manufacturer’s guidelines is paramount. Furthermore, ensure your roofing contractor holds the necessary certifications and provides warranties, covering both workmanship and materials.

      Upkeep and Inspections

      Even the mightiest of roofs benefit from regular check-ups. While metal roofs are relatively low-maintenance, this doesn’t equate to no-maintenance. Periodic inspections by certified roofers can nip potential problems in the bud, ensuring your roof remains in optimal condition.

      What Is The Life Expectancy Of A Roof In Australia?

      Corrugated metal is very common in Australia and is often used for building houses. It is easy to see why metal roofs are so popular. Metals like steel and aluminum last 50 years, while zinc and copper can last up to 70 years.

      Metal Roof40-70 Years
      Colorbond Roof30-40 Years
      Asphalt Shingle Roof20-30 Years
      Terracotta Roof Tiles 30-60 Years
      Concrete Roof Tiles40-60 Years
      Slate Tile Roof100-150 years
      Clay Tiles100-150 Years
      Flat Roof40-50 Years

      Why Do Australian Houses Have Metal Roofs?

      In Australia, metal roofs are a common sight. Australia’s climate can be harsh, with blazing sun, heavy rain, and even hail. Metal roofs stand up well against these extremes, offering longevity and durability.

      Also, metal roofs reflect sunlight, which means homes stay cooler. This can reduce the need for air conditioning, leading to lower energy bills.

      So, when you spot a metal roof in Australia, know it’s chosen both for its toughness and its eco-friendliness!

      What Are The Two Biggest Concerns To A Metal Roof?

      Metal roofing, while celebrated for its resilience and longevity, is not without its challenges. Two of the most prominent concerns are;

      • Water seepage
      • Corrosion

      Water Seepage

      Water accumulation often traces back to a fault in installation. If the roof isn’t correctly laid out, it can lead to pooling and subsequent damage. Also, with temperature changes, metal roofs naturally expand and contract. Over time, this movement can stress the seams, potentially leading to leaks.


      When metals with different chemical compositions are put together, corrosion can happen. This could happen between the metal walls and the parts that hold them to the building.

      Final Thoughts

      The life expectancy of a roof in Australia varies significantly based on its material. While some offer short-term solutions, others are built to protect generations. When choosing a roof, consider the long-term benefits and costs to make an informed decision suitable for your needs and the Aussie climate.

      Remember: Regular maintenance can often extend the lifespan of any roof beyond its typical expectancy!

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