Deep graffiti scratch

A proposed GlassRenu class for deliberate scratched vandalism whose measured morphology or affected area exceeds the approved light-graffiti route.

Meaning and boundaries

Deep should refer to a measured or defensibly estimated physical condition, not merely visibility, intent, or a Category 4 label.

Why it matters in glass restoration

The class should trigger more rigorous documentation, test-area work, distortion evaluation, and a replacement comparison.

Related terms

• Light graffiti scratch
• Heavy scratch
• Scratch depth
• Scratch field
• Category 4 damage

References

• GlassRenu — Glass Damage Specification Sheets
  Publisher’s original source
• GlassRenu — Before You Begin
  Publisher’s original source
• GlassRenu — Graffiti Scratch II
  Publisher’s original source
• National Institute of Standards and Technology — Fractography of Ceramics and Glasses, 3rd edition
  Publisher’s original source