| Situation | Action | |-----------|--------| | Spider crack < 1 inch, not in driver’s line of sight, no edge proximity | DIY possible but risky. | | Spider crack 1–2 inches, clean edges, no dirt in legs | Professional repair only. Do not attempt DIY. | | Spider crack > 2 inches OR any leg longer than 4 inches | No. Replace the windshield. | | Any crack within 2 inches of glass edge | No. Replace the windshield. | | Crack directly in driver’s view | Replace the windshield (legal and safety reasons). | | You can feel the crack with your fingernail and see a pit | Still fixable if size is small, but repair will leave a visible mark. |
Several factors determine whether a spider crack in a windshield can be fixed, including:
The short answer is: The long answer involves understanding the anatomy of the damage, the physics of glass stress, and the limits of DIY repair kits. Here is everything you need to know.
