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How Long Does a Metal Roof Last? Factors That Affect Durability

how long does a metal roof last

How Long Does a Metal Roof Last? Factors That Affect Durability

Businesses across the US are adopting more and more physical locations. In 2021, businesses with physical sites were up 7% when compared to 2019. Part of owning or renting a brick-and-mortar business is maintaining your property. This includes roof installation when your existing roof needs an upgrade. If you’re considering your options, you might be wondering, “How long does a metal roof last?” and what factors affect how long you’ll benefit from one.

This helpful guide explains the life expectancy of this common commercial roofing material so you’re informed before you make your next purchase.

Different Types of Metal Roofs

A metal roof’s lifespan varies by the roof materials you install. Here are some common materials to consider.

Standing Seam

When you install a standing seam metal roof, you’re utilizing roofing panels with an underlying seam. These panels conceal the seam beneath with trapezoidal, vertical legs. This is how this metal roofing earned its name.

When you opt to install these types of roofs, you’re guaranteeing durability that will last for years. On average, a standing seam metal roof can last upwards of 30 years.

It’s completely common for these roofs to last much longer than 30 years if properly maintained. In this case, you may have your standing seam metal roof for as long as 75 years.

Screw-Down Roofs

Another option is a screw-down panel metal roof. These commercial roofs are made from aluminum or corrugated steel.

They feature a series of exposed screws that hold each panel in place. These panels are screwed into your roof’s decking with the screws remaining exposed. Unfortunately, this means that these roofs are less reliable and don’t last as long as other metal roofs.

Since these roofs are screwed into place, they can’t expand and contract the way other metal roofs can. In short, they won’t perform the same way other roofs will. You’ll only have this type of roof for 20 to 30 years.

Another drawback to this type of roofing material is its appearance. It doesn’t look as clean or modern as other roofs. While standing seam metal roofs might cost more, they last longer and are more durable, saving you money in the long run.

What Affects a Metal Roof’s Lifespan?

When you choose to install a metal roof, several factors play into its lifespan. Here’s what you need to consider.

Installation Process

Installation is arguably the most important part of any metal roof installation. If you opt to install a standing seam roof, you need an installer who takes their time and is meticulous.

This is why you need to work with an experienced roofer who is licensed and insured. No matter what type of metal roof you install, ask your contractor about their experience and only hire them if they’re knowledgeable of standing seam metal roofs.

Painting Your Roof

It’s not uncommon to coat a metal roof with paint. This special paint can work to increase how long you’ll have your roof. It’s frequently used on standing seam metal roofs and adds to the length of time they’ll last.

When you paint your metal roof, it adds a protective layer. This layer can protect your metal roof from the sun’s harmful UV rays, debris, and corrosive moisture.

The best roofing contractor will clean each panel before applying a layer of protective coating. This works to prevent rusting.

Proper Ventilation

No matter what type of commercial roof you install, proper ventilation is key. If you have an attic, for example, it must be properly ventilated. If it isn’t, it can put a strain on your metal roofing materials.

This means the material may expand or contract more than the normal amount. This leads to ice dams and an excessive amount of moisture exposure.

Every so often, look in your attic. Check to see that your insulation is all intact and that no animals or rodents have chewed through it or nested in it. This includes bats, mice, and squirrels in your attic.

Weather Patterns

Weather patterns in your area play a significant role in the life expectancy of your metal roof. Your metal roof will last longer if you have mild weather.

This means you don’t experience high winds and have little snow and a moderate amount of rain. In this scenario, your metal roof can easily last you for 50 years.

If you live in an area with extreme weather, you may need to repair or replace your metal roof after about 30 years.

Metal Roof Maintenance

A good rule of thumb is to inspect your roof once a year, regardless of the type of metal roof you install. Professional inspectors know what to look for and can spot signs of wear and tear long before they become an issue.

Roof maintenance is an essential part of extending the life of your metal roof. You should trim trees so they don’t damage your roof, and keep gutters and downspouts clean.

So…How Long Does a Metal Roof Last?

How long does a metal roof last? The answer varies on the type of roof you install, but a well-maintained standing seam metal roof can last as long as 75 years if you live in an area with mild weather. No matter what type of metal roof you install, always work with a seasoned professional.

Eagle Rivet Roof Service Corporation offers professional commercial and industrial roof installation. We also specialize in leak repair, waterproofing, and flat roof repair. Contact us today to learn more about our roofing services.

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