How Long Does a Roof Last: 5 Factors That Affect Roof Lifespan

How long does a professionally-installed roof last? If you're considering installing a brand new roof and want to know how long you can expect it to last, you're not alone. Follow our guide to learn more. 

A recent study shows that 85% of homeowners indicate durability as the top consideration when investing in a new roof. 

And while prioritizing durability might mean spending a bit more up-front, investing in a reliable roof and top-quality roofing installation team is best for your wallet in the long run. 

How long does a roof last in Canada?

Canada's harsh weather conditions can take a toll on your roof. While excellent quality roofing is built to last, you're much better to be proactive, not reactive, when thinking about your replacement options. One harsh winter storm can be enough to wipe out a weakened roof!

If your home is relatively new, you might not need to consider replacing a roof for the next 15+ years. Still, understanding the average lifetime roofs offer can help you weigh your options and start budgeting for a new roof as the time to replace starts ticking down - you'll thank yourself later.

Read this guide to learn about every crucial factor in roof longevity and learn what is the normal lifespan of a roof. 

Factors That Impact How Long Your Roof Lasts

Factor #1: Materials Used

Roofing comes in all shapes and sizes, from slate to tile to traditional asphalt, and each material has its own average lifespan. Figuring out how long can a roof last greatly depends on which roof you want to invest in and install. 

Typically, more expensive roofing materials cost more, but they also last longer or look more attractive, though there are a few exceptions. 

More importantly, different roofing materials aren't all made the same, so you get variations in quality for each. A high-quality version will last longer than a lower-quality option - the prices you pay reflect that, too. It's almost always better to choose a superior product, regardless of the type of roofing material you choose to install - choosing quality over price will help you get the most out of your roof. 

Even the colour of your roof impacts how often to replace your roof. A dark roof absorbs more heat than lighter colours, which wears down your shingles faster and negatively affects ventilation. 

Factor #2: The Roof's Slope

Your roof's slope, also called the "pitch," impacts how well water, dirt, and debris drain away from your roof. Thanks to the natural force of gravity, a higher pitch allows moisture to roll down and away from your roof more easily than a flat or low-slant pitch, leading to puddling and accumulation if drainage isn't addressed. 

Moisture accumulation spells trouble for homeowners over time, leading to leaks or mold and fungus overgrowth that can significantly shorten your roof's lifespan. 

Factor #3: Natural Elements

How many years does a roof last? It typically depends on where you live as much as your roof's quality. 

No matter which type of roof you install, the elements play a big part in how often to replace roof. If you live in a local region with plenty of winter storms, flooding, hurricanes, hail, and other extreme conditions, your roof's health can be regularly threatened. Falling ice, tree limbs, or debris can leave divots, cracked or lost shingles, clogged gutters, and a moisture build-up that slowly weakens your roof. While you can't protect your roof from every element, clearing your roof regularly, cutting tree limbs that have grown too close, and replacing any damaged or missing shingles ASAP can help minimize the effects.

Even without significant storms, dramatic shifts in temperature, like we see in Hamilton, Burlington, and many other parts of Canada, can shorten the average roof replacement time compared to climates that are relatively stable and warm year-round.

Factor #4: Installation Quality

When hiring roofers in Hamilton, Ontario, and beyond, choosing an installer that's qualified and adequately insured is critical. An inexperienced roofer or a home DIYer often doesn't take all the necessary precautions during the installation process to ensure you get the longevity you deserve out of costly roofing materials. 

Don't just Google a "roofer contractor near me," but find a team with proven experience and a long list of happy customers who give a good reference. Using the cheapest installers for a costly roof is like buying a Ferrari and parking it at a Costco - investing in top-quality materials won't do you much good if they're not securely installed on a roof that's built to last. 

Factor #5: Proper Maintenance

Roofs are relatively resilient, but that doesn't mean you can ignore them for 20 years until they're ready for a new roof installation. Performing regular roof maintenance can help you prevent moisture build-up and leaks caused by clogged gutters and rotting debris. 

An annual inspection helps you keep an eye on any potential problem areas, so you can perform smaller repairs as needed rather than letting the problem snowball until you need to replace your roof prematurely. 

How Long Does a Roof Last On a House?

The life you get out of your roof depends greatly on the factors above and the type of roof you choose to install. 

How Long Does an Asphalt Roof Last?

• 3-Tab Asphalt Shingles last 15 - 20 years.

• Architectural Asphalt Shingles last 30 - 50 years. 

How Long Does the Average Roof Last?

Besides asphalt, we're seeing home and property owners choose alternative roofing types, which all come with different lifespans. 

Here's how long you can expect these roofs to last:

• Wood Shingles last 30 - 50 years.

• Metal Roofing lasts 20-50 years, depending on the thickness of the metal.

• Composite Shingles last 40 - 50+ years. 

• Slate Tiles last 50 - 90+ years.

• Clay or Concrete Tiles last 50+ years.

The Verdict: How Often Do You Need to Replace Your Roof?

The average roof and asphalt shingles lifespan can range between 15-50 years, with some other alternatives lasting even longer (and costing more up-front).

Vetting roofing companies in Burlington, Hamilton, and the GHA for a roof repair or replacement? Our team of experts is happy to assess your roof's health and discuss your options further. Get a free cost estimate - call (905) 544-4667 today.