A broken or scratched windscreen is a source of annoyance as well as a safety risk.
Stone chip on the windscreen
Stone chips can normally be repaired in 1 hour. If the car is insured against glass damage normally it costs between 100:- 200:- in risk. The rest of the costs are covered by the insurance company. It is important to come with the car as early as possible so the stone chip does not crack further and dampness filtrates the damaged area.
Further scratches on the windscreen can be polished away. It can be irritating and affect the drivers view because the light may break in different directions.