Understanding Shingle Granule Loss: Should You Be Worried?

If you own a home with an asphalt shingle roof, you might have noticed granules (the tiny, sand-like pieces that coat the shingles) in your gutter or at the base of a downspout. Are these loose granules alarming? Yes and no. Granule loss is expected to a certain extent, but too much of it can indicate potential issues.

Understanding Shingle Granule Loss

It helps to understand granule loss and how it can affect your roof’s performance to avoid hefty repair costs later on. The overall roof repair cost will typically depend on the extent of damage. The Great American Roofing Company shares more insight.

What Are Asphalt Shingle Granules?

Asphalt shingles are covered with tiny granules that not only lend the whole roof its color but also protects against the elements, including wind, fire and UV rays. These granules may be made from various materials, including natural slate, schist, or porcelain.

Normal Granule Loss

Granule loss is a normal occurrence that happens shortly after a new roof installation or a re-roofing job. Extra granules are usually included on shingles to ensure an adequate amount remains after potential loss during packaging, shipping, and installation.

  • Granule Loss in New Roofs. After a new installation, the loose granules might come off the shingles and collect in your gutters or around the downspouts. It’s a benign, expected outcome of settling.

  • Granule Loss in Aged Roofs. Even on a well-aged roof, some granule loss is expected as the shingles experience natural wear and tear from weather exposure. If you’re still worried, there’s no harm in consulting your local roofer for a closer look.

Excessive Granule Loss

Excessive granule loss, however, can signal a problem. It might mean your shingles are nearing the end of their service life or have prematurely failed due to exposure to severe weather, poor attic ventilation, or substandard shingle quality.

  • Harsh Weather Conditions. Hailstorms and other severe weather events can damage shingles and lead to granule loss.

  • Poor Attic Ventilation. If the attic remains hot, it can cause the asphalt to soften, leading to granule loss.

  • Inferior-Quality Shingles. Lower-quality shingles may lose granules faster than higher-quality products.

  • Foot Traffic. Walking on the roof can cause granules to loosen and fall off.

If you experience a significant loss of granules as a result of bad weather or other factors, it’s advisable to have a roofing professional check your roof ASAP.

Call a Trusted Asphalt Shingles Roofer

For top-notch asphalt shingle roof repair, replacement and inspection services, turn to The Great American Roofing Company in Upper Saddle River, NJ. Get a free roof repair estimate by calling (201) 825-2955 today! You may also reach us online and we’ll get back to you. We’re here to help you keep your roof in the best possible condition.