IT IS A GIVEN I should not have to say that you should go in dressed nicely with some sort automobile windshield chip repair of logo on your shirt or hat that shows you are serious and you are a professional.
Insurance companies are more susceptible to cover the windshield if it is on the driver's side or if it is a more intense crack because it is more important to get it done in that case. They do not want any obstructions of view in the line of vision for the driver.
The main question when you are seeking to fix a cracked windshield is whether to replace or repair the glass. Most auto glass shops will opt to repair a crack or chip, as long as it is not directly in front of the driver. They will use a clear resin that is dropped onto the crack and then fixed with an ultra-violet light. The clear resin will then cure and the crack will no longer be visible to the human eye. Most cracks or chips can be effectively fixed in this manner. This method can fix small cracks as well as larger spiderweb style cracks. If an actual hole is formed in the windshield or the crack has traveled too far, your best bet is windshield repair.
If your windshield is cracked or chipped you need to get windshield repair. Most times people think they will need to replace the whole windshield. However if you get the repair completed soon after the crack or chip occurred, it can easily be repaired. It really takes no time for a repair specialist to repair, and sometimes auto body shops offer a mobile service where they will come to you and repair your windshield. As for cost, it is affordable, and most times your car insurance provider will pay for most of or the entire repair.
If the crack looks exactly the same when completed, it's very likely the technician didn't inject the resin properly. A properly completed repair with cause each area of the damage to disappear from at least from one angle of vision (ex: looking from one side, looking from below, looking from above, etc.).
To further strengthen the windshield, the auto glass is subjected to a tempering phase. The sheet is heated to a temperature of 1565 degrees Fahrenheit or 850 degrees Celsius. It is then subjected to blasts of cold air. A piece of PVB plastic is sandwiched between two pieces of auto glass. The sandwich is heated inside an autoclave. This bonds the components together tightly and removes any trapped air.