Your technician should discuss with you the adhesive used and the time it takes for it to properly bond the auto glass to your vehicle. This lets you make an informed decision as to when you feel the car is automobile windshield chip repair safe to drive.
I have seen this procedure first hand and walked away shaking my head wondering why anyone would want to do this to their windshield. Plus, if you haven't had a new windshield in a while it becomes pitted and is very difficult to see in the sun light or at night. If you have picked up a crack, more than likely it's been hit many times already and is probably pitted.
Warranties may not seem important, but they really are when it comes to windshields and front window repair. A reputable company will certainly stand behind their work and have no problem guaranteeing that work. Any future incident could be the result of work that was not done well and you want to make sure that you have a recourse that will not have additional costs.
As a windshield installer for the past thirty five years, let me give you three good reasons not to repair your windshield. As windshield repair is a gimmick in my opinion.
Paint doesn't bond well with rust, so keep touch-up paint nearby to immediately apply over small scratches and nicks. If you wait too long to apply the touch-up paint, the scratch will have already began to rust and you the paint won't stick. Apply the paint quickly and cover the spot to prevent the rust from accumulating.
Not all chips and cracks can be repaired when windshield damage occurs. It is definitely worth the time to have any damage evaluated by a professional to avoid further cracking and damage and eventual replacement.