Chips in your windshield can be formed by a variety of processes such as leaving your car out during a hail storm or parking your vehicle under a large tree. Windshield glass can also be chipped by pebbles or other small debris that may be kicked up by the vehicle in front of yours on the road.
In some cases, the glass itself may be defective, which makes it more susceptible to chipping or cracking no matter how carefully you drive. You may also notice chips or cracks in your windshield glass when the temperature surges or falls rapidly during over a short period of time.
Regardless of why a chip or crack appears, it is important to have it repaired as quickly as possible. This will help to ensure that the damage is contained and that you can drive your vehicle safely.