Not every Windshield crack can be repaired. If a chip is larger than a quarter, it may not be able to be filled. If a crack is larger than the size of a dollar bill, it should not be repaired. If a Windshield crack has been repaired before and continues to grow, it should not be repaired again.

Lastly, some Windshield cracks are not clean. They have other Windshield cracks branching off of the original chips or cracks. These should not be repaired either. If you notice any of these issues, your windshield should be replaced rather than repaired. This involves removing your old windshield and inserting a completely new piece of glass into the area. This is a job that is best left to the professionals and should never be done on your own.