When Should I Replace My Home’s Roof?


How do you know when it’s time to replace your home’s roof? There are a lot of factors that will go into making this decision. For this blog, we’re going to talk about the most common roofing material, asphalt shingles. We’ll discuss the lifetime of an asphalt shingle roof, as well as signs that it needs to be repaired or replaced.


When Should I Replace My Home’s Roof?


The Lifetime of an Asphalt Roof


First things first, there’s no set number of years that an asphalt roof will last. Manufacturers usually provide a warranty of 15-40 years, which is fine as a general estimate of the lifespan of an asphalt roof. Real world results of course will vary.

Over the course of its lifetime, an asphalt roof bears the brunt of the elements head on to keep your house dry and protected. Here in the Mid-Atlantic region where we see all four seasons, roofs are exposed to everything from blistering heat, to summer storms, to ice and snow in the winter. This continuous process of UV exposure and expansion and contraction slowly wears the roof down.

Research has shown that during the early years of its life, a roof goes through a rapid aging process as it goes through initial curing. After this is over, the roof goes through the longest period of its life, a mid-life stage where aging is slow and does not occur at a noticeable rate. In the final years of its life, the roof again begins to age rapidly, and deterioration will be noticeable and significant. It’s at this stage of your roof’s life that it’s time to replace it.

Signs that Your Roof Needs to Be Replaced


There are a number of signs that suggest a roof that has entered the final stage of its life. Before we continue, please note that while many examples of roof deterioration are either best seen or only visible from the vantage point of the roof itself, however it is dangerous to climb onto your roof at any time. You can spot all of the following problems from the ground or from the inside of your home. For a more detailed inspection of your roof, consider a professional roof inspection service.

Damaged or Missing Shingles


Shingles develop curled edges, cracks, blisters, and stains over time. These are part of the natural aging process of a roof, but if they are severe, these problems indicate the roof needs to be replaced. This is because as the shingles suffer more damage, they become more vulnerable to the elements, and your roof is less able to protect your home. If your shingles are missing or severely damaged, it’s time to start thinking about replacement.

Dark Spots on the Roof


As asphalt ages, it loses the granules that protect it from the sun. When it loses a lot of granules, exposure to UV rays will cause damage to accelerate quickly. This creates dark spots on the roof that you will be able to see from the ground.

Water Damage in the Attic


If water has leaked through the roof, you’ll see dark spots in the attic from water damage.

Are you noticing some of these problems on your roof? A professional roofer can tell you if your roof needs to be repaired or replaced. Schaefer Siding and Exteriors has been installing and repairing roofing in Maryland since 1977. To learn more, contact us today at 410-781-4028 or email us. You can also visit our website for more information.