When it comes to windshields, size and depth are key factors in determining whether a repair is possible or not. Larger, deeper cracks that extend to the edges of the windshield are more likely to need to be replaced than small, shallow chips. Generally, auto glass technicians can repair a splinter with a diameter of an inch or less, and a crack that is no more than three inches long. If the size of the crack is larger than that of a dollar bill, then repair is not an option.
Additionally, if the damage has spread to the inside of the glass to the tempered glass layer, then repair should be done as soon as possible. It is also not possible to repair a cracked windshield if the polyvinyl butyral layer on the windshield is damaged. Furthermore, only two minor chips can be repaired without affecting the structural integrity of the windshield. If there are more than two chips or if the damage is not entirely circular, then replacing the windshield may be the only viable option. As soon as you detect one or more small cracks in the front or rear windshield, you should take your vehicle to a windshield repair shop or ask a mobile windshield repair service for help. High-quality craftsmanship is essential to repair a mixed crack; any quantity lower than that amount can cause more damage to the windshield.