Major thing that needs to be considered is the location and size of the damage. If damage is at the edge of the windshield then it will spread fast and will destroy the integrity of the glass. If any edge damage is found then front window repair it soon. It will save the life of your windshield.
Some of current techniques do no repair those cracks that directly come into the view of driver's line of sight because a small distortion may still left behind. In that case replacement would be a wise decision. Cost of the repair is entirely depending upon the damage of the windshield. If the cracks are quite long or around 12 inches then charges will be higher.
Next we have the windshield repair kits priced in the middle. They range in price from $600-$2,000. These are the companies that normally offer high-quality repair kits at a an affordable price. But not all of them.
99. Look for the "EnergyStar" logo. This designation from the Environmental Protection Agency means that the appliance exceeds minimum federal energy use standards usually by a fix auto glass repair significant amount.
Unfortunately, not all windshield chips are created equal. There are four main types of chips: star break, combo break, partial bullseye, and bullseye. Each one may spread differently or at different speeds, so it's important to take your car to an expert as soon as possible to determine if you can have windshield chip repair done.
Wash your vehicle. As with dirt or other debris, water in the damaged area can cause your windshield to crack further or even make it impossible to fix using traditional windshield crack repair techniques.
Sometimes, the crack in the Auto Windshield glass is very long and unavoidable. In such cases, its better to replace the glass instead of repairing it. The reason is that in the long run it will be more harmful than the crack itself. It might break in the car itself when you are driving because of the stress.