How Long Do Asphalt Shingle Roofs Last?

When protecting your home, the roof is your first defence against the elements. Asphalt shingle roofs have remained popular among the roofing materials for homeowners in Ottawa andAsphalt Shingle Roofs. Asphalt Shingles Roofing, Construction For New House. surrounding areas. 

We offer affordability, durability, and versatility. However, homeowners often wonder how long asphalt shingle roofs last. 

This informative blog post is brought to you by Stewart Roofing, Ottawa’s leading roofing experts with over 30 years of experience. 

We will delve into the factors that influence the lifespan of asphalt shingle roofs and provide guidance on maximizing your investment in this roofing material.

Asphalt Shingle Roofs Quality of Materials

The quality of the asphalt shingles used plays a significant role in determining their lifespan. 

High-quality shingles sourced from reputable manufacturers, such as Owens Corning and CertainTeed, are designed to withstand the harsh Canadian climate, including temperature extremes, UV radiation, and severe weather conditions. 

These premium shingles often come with specific warranties that indicate their expected lifespan.

Typically, high-quality asphalt shingles last between 20 and 30 years. However, the manufacturer’s warranty period may extend beyond the actual lifespan of the shingles. 

Professional roofing contractors like Stewart Roofing can help you select the best shingles with a proven longevity and durability track record.

Asphalt Shingle Roofs Installation

The installation process is another critical factor in determining the lifespan of asphalt shingle roofs. Hiring a professional roofing contractor with experience installing asphalt shingle roofs isAsphalt Shingle Roofs. Worker Putting Asphalt Roofing shingles With Nail Gun. essential to ensure proper techniques and best practices are followed.

Improper installation can lead to premature wear and tear, compromising the roof’s integrity. Issues such as incorrect nailing, poor ventilation, and inadequate flashing can result in leaks, moisture damage, and reduced lifespan. 

By choosing a reputable roofing company like Stewart Roofing, you can trust that your asphalt shingle roof will be installed correctly, adhering to industry standards and manufacturer guidelines.

Climate and Environmental Factors

The harsh Canadian climate, with its frigid winters and scorching summers, can significantly impact the lifespan of asphalt shingle roofs. 

In Ottawa, where extreme weather conditions are common, choosing a roofing material that can withstand these challenges is important.

Asphalt shingles are designed to withstand a wide range of climates, and their composition includes materials that provide durability and resistance to UV rays. 

However, prolonged exposure to extreme temperatures, rapid temperature fluctuations, and severe weather events can shorten the lifespan of the shingles.

Regular inspections and maintenance are crucial to mitigating environmental factors. Roofs in Ottawa should be inspected at least twice a year in the spring and fall to identify damage or signs of wear. 

Addressing these issues promptly can help prolong the roof’s lifespan and prevent more extensive damage.

Proper Maintenance

Regular maintenance is essential to ensure the longevity of any Asphalt Shingle Roof material. Routine inspections by a professional roofing contractor such as Stewart Roofing can help detect minor issues before they escalate into major problems.

During inspections, the roofer will check for cracked, curled, or missing shingles and any signs of water damage. They will also assess the condition of the flashing, gutters, and ventilation system. 

Addressing these issues early through repairs or replacements can prevent further damage and extend the lifespan of your Asphalt Shingle Roofs.

In addition to professional inspections, homeowners can also perform some maintenance tasks themselves. 

This includes cleaning the roof by removing debris such as leaves and branches, ensuring gutters and downspouts are clear and functioning properly, and trimming overhanging tree branches that can impact the roof’s integrity.

Roofing System Components

An asphalt shingle roof is not just made up of shingles; several other components contribute to its overall durability and lifespan. These components include ridge vents, soffit vents, underlayment, and flashing.

Ridge and soffit vents are crucial in properly ventilating the roofing system. Adequate ventilation helps regulate temperature and moisture levels, preventing mold growth and reducing the risk of premature roof deterioration. 

In combination with proper insulation, a well-ventilated attic can contribute to the longevity of your asphalt shingle roof.

Underlayment is an added layer of protection between the shingles and the roof deck. It helps prevent water infiltration and provides an extra barrier against leaks. 

Choosing a high-quality underlayment can enhance the overall performance of your asphalt shingle roof.

Flashing is an essential component that seals roof areas vulnerable to water penetration, such as around chimneys, skylights, and vent pipes. 

Properly installed flashing ensures these areas are watertight, reducing the risk of leaks and extending the roof’s lifespan.

By paying attention to these roofing system components, seeking professional advice, and ensuring their proper installation, you can maximize the lifespan of your asphalt shingle roof.


In summary, a combination of factors influences the lifespan of an asphalt shingle roof. The quality of the materials, proper installation by skilled professionals, climate conditions, regular maintenance, and the integration of essential roofing system components all play integral roles in determining how long your roof will last.

While a well-installed, high-quality asphalt shingle roof can last between 20 and 30 years, proactive maintenance and care can extend its lifespan even further. 

By partnering with a reputable roofing company like Stewart Roofing for installation, inspections, and maintenance, you can ensure your investment in an asphalt shingle roof provides reliable protection, peace of mind, and long-lasting value for your home. Contact us today to get started.

Leave a Comment