Granule Loss on a New Asphalt Roof: What Homeowners Need to Know
If you've recently had a new asphalt roof installed, you might be noticing granule loss on your new roof. Seeing small granules collecting in your gutters or on the ground near downspouts can be concerning, but in most cases, it’s completely normal. Understanding why granule loss happens, when it's a problem, and what you can do about it can give you peace of mind and help you maintain your roof’s longevity.
How Do Granules Protect Your Roof?
Granules are more than just a protective layer—they play a crucial role in your roof’s durability and performance. These tiny mineral particles help:
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Protect Against UV Damage: Granules shield shingles from the sun’s rays, preventing premature deterioration
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Enhance Fire Resistance: Some granules contain fire-resistant materials, adding an extra layer of safety
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Improve Aesthetic Appeal: They give asphalt shingles their color and texture, enhancing your home’s curb appeal
Because granules are such an essential part of your roof’s protection, monitoring their loss can help you gauge the health of your shingles over time.
Why Does Granule Loss Happen on a New Roof?
Granule loss on a new roof is a common and natural occurrence. Asphalt shingles are manufactured with a layer of protective granules, some of which may loosen during production, packaging, transportation, and installation. It’s especially normal to see some shedding in the first few weeks after installation as the roof settles.
In fact, most manufacturers intentionally apply more granules than the shingles need to ensure long-term durability. A small amount of excess is expected to come off, especially after installers walk the roof or as rain and wind begin to interact with the surface.
While roofing professionals take care to install shingles in a way that minimizes scuffing and premature granule loss, some shedding is inevitable. In some cases, roofers may use a leaf blower to clear loose granules after installation—this helps prevent clogging in gutters and leaves only the firmly embedded granules behind.
It’s also worth noting that some production runs of shingles may shed more than others, particularly if bundles stick together during packaging. In those instances, manufacturers typically stand behind their product and address any legitimate issues through documentation, credits, or replacements. However, this level of granule loss is rare and not indicative of a broader defect.
When Should You Be Concerned About Granule Loss?
While granule loss on a new roof is normal, excessive or persistent shedding may indicate a problem. Here are some signs that warrant a closer look:
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Continuous granule loss after rain, wind and hail (not just in the initial weeks)
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Bald spots or exposed asphalt on shingles instead of an even granule coating
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Granule loss that continues for months beyond the installation period
If you notice any of these issues, it’s best to contact a trusted Colorado roofer for an inspection to ensure your shingles are still in good condition.
Need a Roof Inspection?
If you’re concerned about granule loss on your new roof, Colorado Roofing Association can connect you with trusted, licensed roofing professionals in your area. A quick inspection can ensure your roof is performing as expected and give you peace of mind.