PIAM says a claim made under an applicable windscreen add-on does not affect the policyholder’s NCD. If the driver makes a glass claim under the main comprehensive motor policy without that add-on, the NCD may reset at renewal.
That general distinction does not replace the wording of your own policy. Before authorising work, ask the insurer whether the windscreen benefit is active, how the claim will be processed and whether any excess or limit applies. Keep the insurer’s answer with your claim records.
Winspro Windscreen Specialist