Shingle granule loss is a common issue for asphalt roofs. Granules, the small, gravel-like particles on the surface of asphalt shingles, protect your roof from the elements. But they also play a role in heat reduction, fire resistance, algae growth, and curb appeal.
Why Are Shingle Granules Important?
- Protection from UV Rays: Granules protect the asphalt layer of shingles from UV rays. If the asphalt is exposed to sunlight, it can cause the shingles to dry out, crack, and deteriorate over time.
- Durability: Granules provide a rough texture that helps in shedding water during rain. Some granules contain minerals that help prevent algae growth.
- Curb Appeal: Granules give shingles their color and texture, adding to your home’s curb appeal. Excessive granule loss can affect the look of your roof, making it appear worn out and tired.
What Does Shingle Granule Loss Mean for Your Roof?
Shortened Lifespan
Granules protect shingles from the elements. Significant granule loss will shorten the lifespan of your roof by making it more susceptible to damage from the sun, water, and wind.
Increased Risk of Leaks
As shingles lose granules, they also lose their waterproofing ability. Without the granules to help shed water, your roof becomes more prone to leaks, which can lead to water damage inside your home.
Higher Energy Bills
Granules act as a barrier against heat from the sun. Without them, your roof absorbs more heat, making your home warmer in the summer. This can increase your energy bills as your cooling system works harder to keep your home comfortable.
Signs of Granule Loss
- Granules in Gutters: One of the first signs of granule loss is the appearance of granules in your gutters or downspouts. If you notice a significant amount of shingle granules accumulating there after a storm or heavy rain, it’s a sign that your shingles are losing their protective coating.
- Bald Spots on Shingles: Bald spots on your shingles is an obvious sign of granule loss. These areas expose the asphalt layer, making your roof more vulnerable to damage from UV rays and water.
- Color Changes on the Roof: As granules come off, the exposed asphalt underneath may look darker or lighter, depending on the color of your roof. These patches can be a warning that your shingles are wearing out.
- Cracking or Curling Shingles: Granule loss often coincides with other signs of aging, like cracking or curling of the shingles. When shingles lose granules, they become less flexible and more prone to breakage.
What Causes Shingle Granule Loss?
It’s normal for your shingles to shed granules slowly or after a big storm. But a significant loss could damage your roof and make it susceptible to weather.
Normal Aging
Over time, all roofs will experience some level of granule loss. This is part of the natural aging process of asphalt shingles, especially as they reach the end of their lifespan (typically 20-30 years).
Weather Exposure
Harsh weather conditions, such as heavy rain, hail, snow, ice dams, and high winds, can cause granules to loosen and fall off. Clogged gutters, after a storm or from poor maintenance, can make the problem worse.
Poor Installation
If your shingles have been Improperly installed, they may lose shingles more quickly.This could be from insufficient adhesion or improper handling during installation.
Foot Traffic
Walking on the roof frequently or during repairs can loosen granules, especially on older roofs. The pressure from foot traffic can scrape off granules and compromise the shingles’ protective layer.
Ask Our Experts About Your Roof
Granule loss is a common sign of aging for asphalt shingles, and you should look into a roof repair. If you’re worried about shingle granule loss, contact our experienced team today.
