What Causes Asphalt Roofing Shingles to Lose Granules?

You should not take it lightly if you find a significant amount of shingle granules on the ground or in your gutters. If this occurs, you should contact a local contractor as soon as possible to have your roof checked. It may not seem like a major issue, but it can indicate that something’s not right with your roof. 

asphalt roof

Read on as a residential roof installation expert shares some of the most common causes of granule loss in asphalt shingle roofs. 

Normal Wear and Tear

Roofs that are nearing the end of their life are more likely to experience granule loss. The more fragile the shingles become, the more they can break into smaller pieces. If your roof is decades old and is losing a large amount of shingles, it may be time to have the system replaced. 

Granule Loss on New Roofs

It’s just not aging roofs that can experience granule loss. After roof installation, shingles can lose granules, but it’s typically not a concern. Shingles have excess granules that fall off during transport and installation. However, if the granule loss persists, immediately contact the contractor who installed your roof. It can be a sign that the product is defective. 

Hail Damage

Extreme weather events, such as hailstorms can harm your roof and cause granule loss. Make sure to have your roof checked by a professional after a storm. Keep in mind that not all signs of damage are apparent until they have spread or progressed. 


Blisters may be a cosmetic manufacturing defect, but they can also be a sign of wear and tear. They can occur due to foot traffic, where you can typically see tiny round dots of missing granules on the upper surface of shingles. 

Let an experienced contractor handle your roofing concerns like State Roofing. We specialize in asphalt shingles, metal roofing and more. Call us at (360) 794-7164 or fill out our contact form to get a free estimate. We work with homeowners in Seattle, WA, and nearby communities. 

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