spot defects
spot defects
spot defects
granule loss
spot defects
spot defects
granule loss
granule loss
blisters (unopened)
granule loss
granule loss
granule loss
granule loss
blisters
blisters
blisters
blisters
Craze cracks
Manufacturing defects
Animal damage

Aerial Photography

Hail Damage

Hail Damage

Defect

Mechanical damage
Wind damage
Damage from Repair

Damage From Repair

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blisters (unopened)

Blisters are caused when volatiles within the coating asphalt or moisture from the shingle felt vaporize when heated. Trapped vapors create bubble-like forms/blisters in the asphalt.