Glass Scratch Repair
Glass scratch damage can be categorized into 3 different types of damages: Light Surface Scratch, Surface Damage, and Deep Scratch. These categories can be defined as follows:
Light Surface Damage
If you can run your fingernail across the damage without being able to feel the damage it would be considered light surface damage. This is generally caused by poor maintenance and is almost always incidental.
This type of damage can be felt with your fingernail; however it will not stop your nail from passing over the scratch. This is commonly caused by window scrapers, high abrasives, or poor installation.
These scratches are usually caused by vandals with some kind of etching tool or rocks. When running your fingernail across the damaged glass, the scratch will catch or stop your finger.