If you have comprehensive coverage and your glass claim is covered, then chances are you are covered for a cracked windshield. 

Insurers are often willing to cover glass repairs, and for good reason.

The windshield is one of your car's primary safety features, right up there with seat belts and airbags. If you notice a ding - or worse, a long crack -it's worth taking care of it right away!!

Your car insurance company will likely be happy to pick up the tab for repairs just to prevent the break from getting worse, which it will. Without raising your rates. No deductibles required.