Granules Collecting in Gutters
Not an emergency, but track for changes
Finding shingle granules in your gutters? Learn when it's normal shedding vs. a sign your roof needs replacement. Cost-saving diagnosis steps inside. Estimated repair cost: $0–$500. For a precise estimate based on your actual roof, get a free satellite quote at RoofVista.
Likely Causes
Normal aging — asphalt shingles lose granules gradually over their lifespan, accelerating after 15-20 years
Hail damage knocks granules off in concentrated impact patterns
Manufacturing defect causes premature granule loss (check warranty)
Foot traffic on the roof dislodges granules from high-traffic areas
Pressure washing or aggressive cleaning strips granules prematurely
How to Diagnose This Problem
- 1
Check gutter quantity — a handful after a storm is normal; cups of granules indicate a problem
- 2
Look at the shingles from the ground — bare black patches where granules are missing signal advanced wear
- 3
Compare granule loss across the roof — uniform loss = age, localized = damage or defect
- 4
Check shingle age — granule loss is expected after 15-20 years for architectural shingles
- 5
After hail, check for circular dents or bruises in the shingle surface alongside granule loss
Estimated Repair Cost
$0 – $500
Typical repair range (varies by location and severity)
When to Replace Instead of Repair
When granule loss exposes the black asphalt substrate across large areas, UV degradation accelerates rapidly. If your shingles are 18+ years old with significant granule loss, plan for replacement within 1-3 years.
Materials Affected
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