GAF discusses impact damage and the possibility of effects that are not immediately visible. Granule loss alone does not establish every hail claim or repair scope.
GAF technical bulletin: Damage to shingles caused by hail.
What this means for your roof
GAF discusses impact damage and the possibility of effects that are not immediately visible. Granule loss alone does not establish every hail claim or repair scope.
A useful question for your contractor
Ask for an inspection that distinguishes impact damage from wear and other conditions.
Ask for the answer to be tied to the actual roof condition and the exact product being installed. Keep the agreed repair or installation detail with your estimate and project photos.
Bulletin revision: February 1, 2021. This is the date of the manufacturer source, not a claim that this website guide existed on that date.
Read GAF: Damage to shingles caused by hail
This homeowner summary explains the cited bulletin. The complete manufacturer document and current product instructions govern the installation details. A requirement for one manufacturer or product should not be transferred to another without checking.