How Long Does a Metal Roof Last?

Metal roofs are still a common roofing material for residential, commercial, and agricultural buildings. They are not only strong, fashionable, and low-maintenance but also incredibly long-lasting. Metal roofs have an outstanding lifespan and endure much longer than other roofing materials. One of the most usually asked questions is about how long a metal roof will last. 

We’re providing you with all the details on the lifespan of a metal roofing system to give you a better understanding before choosing your next roofing contractor.

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Different Types of Common Metal Roofing Lifespan

1. Steel Roofing (Lifespan: Average of 40 years)

Metal roofing systems are adaptable. There are always options available if you want a steel roof that mimics slate, shingles, or clay.

Did you know some steel roofs built during the 1900s still exist? Steel roofs are that tenacious. Steel roofs can last longer without needing significant repairs if we compare them to asphalt shingles. They are, as you can see, a wise long-term investment.

Manufacturers coat seal roofing to shield it from corrosion. Some homeowners believe that metal roofing creates design issues. The fantastic news is that many metal roofing alternatives are available that mimic kinds of roofs. Slate, shingles, or clay, for instance.

2. Aluminum Roofing (Lifespan: Average of 50 years)

Metal roofing made of aluminium is regarded to be the lightest type. Steel is not the best material if you reside near the coast. Steel is more susceptible to corrosion, but aluminium resists it. Elastomeric coatings must be used to waterproof aluminium roofing.

The energy efficiency of this metal roof is another advantage. It is made to keep your house cool throughout the warmer months and minimize your utility bills. The aluminium metal roof reflects the sun’s heat and light. Due to its weight, an aluminium roof shouldn’t require much time to install.

3. Copper Roofing (Lifespan: 50-100 years)

Many believe a copper roof is simply the best type of roofing material. It excels in terms of both durability and attractiveness. To prevent decay in copper, you don’t have to rely on paint treatments. Additionally, individuals can utilize it for smaller dwellings due to its lightweight nature.

What is the lifespan of a copper-made metal roof? It should last for at least 50 years, if not more. Maximum 100 years. The patina that forms on copper roofing over time shows corrosion. However, the blue-green layer from a worn-out copper roof is also protective because it further waterproofs your roof.

4. Tin Roofing (Lifespan: Average of 50 years)

You might have never heard of a tin roofing system before. The industry does not use it very frequently. Tin existed before people thought of aluminium as the standard for metal roofing.

If the sound of rain on your tin roof worries you, you can reduce the noise by adding roof underlayment materials.

5. Zinc Roofing

As you can see, copper isn’t the most durable roofing material. A zinc roof has a comparable lifespan. However, a clean atmosphere is necessary for long life. A zinc roof resists corrosion. On top of an existing roof, contractors can add zinc roofing.

A zinc roof (architectural grade) is 90–95 per cent recyclable, making it a sustainable material. The ability of a zinc roof to mend itself is, however, what makes it so extraordinary. You don’t have to worry about leaking or hiring a roofing professional if it gets scratched.

Metal Roof vs Other Types of Roof Lifespan Comparison

Metal roof vs Shingles

Metal roofing may have a higher start up cost, but this is more than made up for by how long it lasts and how durable it is. Metal roofs can last for 60 years or more with little to no upkeep. Metal roofs have a 50-year warranty from many roofing vendors because they are durable against the environment and repel insects, mould, and mildew.

Even though it depends on the kind of shingle roof you select, on average, shingle roofs need to be replaced twice every 60 years. Shingle roofs are not the best option for homes in areas with bad weather because they are also quite susceptible to hail and wind damage.

Metal Roof vs Tile Roof

Concrete tiles typically last for 50 years. However, a clay roof tile installation lasting 100 years or longer is not uncommon. Tile roofs require little to no upkeep is one of their best features. Though they might be brittle and break if not handled properly, tile roof materials must be treated with the highest care. Tile roofs can considerably raise a home’s market value because they last very well over time

Factors That Affect Metal Roof Lifespan

1. Roof Color

You might be shocked to learn that the colour of your roof impacts how long it lasts. A darker top often absorbs more heat. Heat is reflected by a lighter-coloured roof, lowering indoor temperatures. Consider acrylic elastomeric roof coatings to keep a dark metal roof cooler.

2. Roof Slope

Roof slope refers to how steep a roofing system is. A roof’s longevity is impacted because a high slope drains water quickly, whereas a low pitch takes longer. Ponding water accelerates deterioration because it absorbs and erodes the roof’s substance.

3. Moss Growth

Roof degeneration is hastened by moss. Despite not being typical on metal roofs, organic material on your roofing surface encourages moss formation.

For example, the northern portion of the roof has gloomy sections that are ideal for moss growth. Additionally vulnerable to moss growth is a roof that is bordered by trees. Physical debris in metal roofs makes them more prone to moss, even though moss is not a common problem with metal roofs.

4. UV Radiation

You should consider nature if you’re wondering how long a metal roof lasts. Character plays a significant role in reducing the useful life of roofs. Over time, UV radiation deteriorates the roof’s substance. The portion of the roof that is exposed to the sun the most quickly deteriorates.

5. Installation

No matter how challenging your metal roof is, if it isn’t put properly, it won’t last. Your roofing contractor must install the roof under the manufacturer’s instructions. They ought to be licensed installers. Additionally, confirm that your contractor has a license and offers warranties on both labour and materials.

6. Maintenance

All roofing systems require maintenance. Homeowners that are busy benefit from metal roofs since they require less maintenance. However, just because something requires little care does not exempt you from inspecting it. Regular certified roofer inspections ensure that issues are fixed quickly before they worsen.

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How Can You Make Your Metal Roof Last Longer?
Cut down trees that are scratching your roof.

Your metal roof may sustain dents, cuts, or other damage when tree branches or shrubs brush against it due to wind. Regularly trim your bushes and trees.

Clean debris stuck on your roof.

Rain and even snowstorms wash debris from your buildings. Rainfall can help in clearing your roof of leaves, branches, and other debris. Soft-bristled conventional window cleaning tools can help remove dirt without damaging your roof. Avoid using water underneath the edge of your roof to prevent water damage.

Do not walk on your roof.

Be careful not to step on your metal roof. Even while it can withstand a few steps, the more you walk on it, the more damage it will sustain if you climb a metal roof; if you do so frequently, check the supplier’s instructions on how to do so safely.

Make sure that your gutters are also clutter-free.

If left unattended, gutter debris can damage even metal roofs. If your gutters are stucked with debris, the standing water could erode or rust your roof instead of giving it a long life.

Avoid paint on your roof.

The worst paint for a metal roof is spray paint. Make sure any painters you hire don’t go near your metal roof. Paint can shorten the lifespan of a metal roof and damage its finish.

Key Takeaway

Overall, metal roofing is a fantastic option for people who want to put on a roof and then not have to worry about it for decades. Although metal roofing has many additional advantages, its lifespan is undoubtedly one of the most significant.

However, it also pays to consider hiring a reputable roofing company for installation and maintenance. This can help you better understand how to keep your roof and serve its purpose for a longer time.