it is not normal to lose your no claims bonus when you make a claim for a new windscreen ,
Chips and other damage which is repairable will normally be done free for you on most ins policies however they are starting to charge a �10 fee on some newer policies,
you do however have to follow the insurance company's instructions when making a claim as they normally use a glass helpline number who will put you in touch with there
prefered glass company Failure to follow there procedure could leave you out of pocket !!
Best advice is to call them and ask them for your peace of mind.