What Factors Affect Asphalt Roof Lifespan?

Asphalt shingle roofs have a lifespan of 15-25 plus years but there are several factors that determine how long they will last. Some factors are out of a homeowner’s control, such as climate, but others, such as regular maintenance and timely repairs, are up to the homeowner.

Choosing an experienced, reputable roofing contractor to install your roof is also a factor in the homeowner’s control. A good roofing company works with high quality materials and uses proven installation methods to give your roof the best chance of lasting as long as possible.

With that said, let’s dive into the factors that affect the lifespan of asphalt shingle roofs.

What Factors Affect Asphalt Roof Lifespan?

Here are the main factors that affect the lifespan of an asphalt shingle roof:

1. Quality of Shingles and Underlayment

If it’s time to replace your roof, you may be feeling overwhelmed with the variety of shingles options on the market knowing that the type or brand you choose can make a big difference in how long your roof lasts. High-quality shingles like Malarkey shingles, carried by Skyline Roofing, are more durable than other brands because they are made with NEX polymer modified asphalt technology. Malarkey shingles are also algae-resistant and can withstand winds up to 110 miles per hour. The lifespan of a Malarkey shingle roof varies depending on the specific product line but typically ranges between 25 and 50 years. Learn more about the different types of Malarkey shingles.

In addition, the type of underlayment used has an impact on the longevity of a roof. Ask your roofing contractor if they use synthetic felt or peel-and-stick material. What type of roof underlayment is best? Most contractors use synthetic felt because of its superior durability, water resistance, and longevity. Skyline roofing only uses the highest quality materials on our roof installations, including top rated shingles, thick underlayment and metal trim.

2. Installation

The way that your shingles are installed can impact your roof’s ability to withstand Pacific Northwest winds and the overall lifespan of your roof. When shingles aren’t installed properly, water can seep underneath and weaken your roof’s structure over time. A good roofing contractor will nail in patterns, ensure proper ventilation, and select the best venting options for your home.

3. Maintenance & Repairs

Regular maintenance and handling repairs in a timely manner are key to maximizing the lifespan of any shingle roof. In the Pacific Northwest, it’s especially important to keep moss and algae from building up on your roof since our climate is so cool and damp. Any needed repairs should be handled by a licensed roofing contractor as soon as possible to prevent further damage. If maintenance and repairs are not handled appropriately, the roof’s lifespan will be shortened.

4. Climate Conditions

Climate can have a significant impact on the longevity of an asphalt shingle roof. Extreme weather conditions such as high winds, heavy rain, hail, and snow that we experience most years here in Bellingham, Washington can make shingles susceptible to water damage and leaks, especially if the shingles are not properly installed or maintained. Exposure to prolonged periods of sun can also cause shingles to fade and lose their protective coating, which makes them vulnerable to water damage and cracking or curling.

5. Roof Pitch

The roof pitch (or the slope of the roof) can impact the lifespan of an asphalt roof. The reason is that the pitch of a roof affects how water and debris flow off it, which in turn affects how well the shingles protect the roof from moisture damage. Low pitch roofs (typically less than 3:12) can be more prone to water damage because water is more likely to pool on the surface. Low pitch roofs may also not have adequate ventilation, which can cause excess heat and moisture buildup that can damage shingles and shorten the roof’s lifespan. Steeper roofs, therefore, typically have a longer lifespan. It is important to choose the right materials for use on low pitch roofs. Typically, metal or TPO are installed on low pitch roofs. In some cases, a waterproof underlayment can be installed with the asphalt shingles that will prevent leaking associated with the low pitch.

Ensuring Your Asphalt Shingle Roof Lasts as Long as Possible

Now that you understand the factors that impact the lifespan of a shingle roof, you are equipped with the knowledge to make your roof last as long as possible. If it’s time to replace your roof, be sure to invest in high-quality shingles suited to your climate and proper installation by a qualified, reputable contractor. After installation be prepared for regular maintenance to enhance your roof’s lifespan.

Be sure to contact a few experienced roofers in your area for quotes so you know your asphalt shingle roofing options. Click here for more information on what to look for in a roofing estimate.

Trust Skyline Roofing & Construction for Your Roof Maintenance & Installation Needs

At Skyline Roofing & Construction our roofing professionals always strive to add value to your home or business for the long term – that includes installing quality roofing and maintaining your roofing investment. Contact us today to schedule your free consultation for a new roof, roof repair, roof maintenance, or roof cleaning services. Skyline Roofing is located in Bellingham, WA and we presently serve Whatcom, Skagit, and Island Counties.

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