Repair results can be significantly enhanced by reporting and scheduling an appointment immediately after damage has occurred. When a rock from the road hits the windshield a small piece of the top layer of glass is literally sheared off. At the same time, some of the glass directly under the point of impact is propelled inward. From that point on, as you are driving, the small opening into the middle layer of glass is collecting and compacting dirt, debris and moisture in the break. The longer you wait before having the windshield repaired, the more difficult it will be to remove what ever has accumulated in the damaged area. In short, the sooner the repair the better the result.