Insurers will usually authorize up to 3 chips per vehicle. If you are going to do chip repair to a windshield, all chips should be fixed. If you leave chips in the windshield you run the risk of a chip turning into a crack. If the chips are deemed repairable and the customer is agreeable, the only thing we need to keep in mind is the cost vs. replacement. here comes a point that the cost to repair a certain number of chips will equal or exceed the cost of replacement.