Glossary termRoof Anatomy

Granule Loss

Also called shingle granules, granule shedding

Written byPRE Editorial Team
Last reviewedSep 2026
Reading time2 minutes

Quick definition

Granule loss is the loss of mineral surfacing from asphalt shingles, exposing more asphalt to weathering and ultraviolet light.

Some loose granules are normal on new roofs, but concentrated bare spots, impact marks, or widespread loss can indicate aging, damage, or manufacturing issues.

How It Appears

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What it means for you

Why does granule loss matter?

Some loose granules are normal on new roofs, but concentrated bare spots, impact marks, or widespread loss can indicate aging, damage, or manufacturing issues.

Sources

  1. PRE Editorial Reference Standard. Professional Roofing Encyclopedia.
    Tier 2 authority · industry
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Granule Loss | Roofing Glossary | Professional Roofing Encyclopedia