Symptoms
- Sand-like grit collecting in gutters or downspouts
- Bald or shiny patches visible on shingles
- Granules increasing over recent years
Likely causes
- CommonNormal weatheringNew shingles shed some loose granules in the first year or two after installation.
- CommonAging shingles nearing end of lifeGranules protect the asphalt from UV; heavy loss exposes and speeds up wear.
- PossibleHail impactHail can knock granules loose in bruised spots, which may also need repair.
- PossibleFoot traffic on the roofWalking on shingles, especially in heat, can dislodge granules.
What to do
- Check the age of the roof; heavy granule loss in the first year or two on a new roof is usually not a concern.
- Look at the shingles themselves from a ladder for bald, shiny, or dark patches.
- Check for recent hailstorms in the area and look for small dents or bruises on shingles if so.
- Clean out the gutters regularly since granules can contribute to clogs.
- If loss is heavy or the roof is older, have a roofer assess remaining lifespan.
- Document granule buildup with photos and dates if you plan to file an insurance claim for hail damage.
Tools and parts
- Ladder
- Gutter scoop or trowel
When to call a pro
Call a roofer for an inspection if granule loss is heavy, uneven, or the roof is over 10–15 years old.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.