On asphalt shingles
- Soft bruises or dark spots where granules are missing
- Random damage pattern — not uniform wear
- Dents on roof vents, pipe boots, or flashing
- Granules collecting in gutters after a storm
On metal and trim
Check AC condenser fins, mailbox, and car hoods in the driveway — if they are dented, the roof may have taken hits too.
Document with photos and timestamps before cleanup hides evidence.