Zurich said the company would offer a seamless approach to insuring PPPs and PFIs throughout the life of a deal.
It said there were "grey areas" between the end of the construction phase and the start of the operational phase when the contractor took responsibility for the day-to-day running of the service.
Zurich warned that when the two stages were treated separately, risks peculiar to public services might be neglected. It claimed, for example, that schools faced a higher risk of arson than private buildings.
A spokesperson said: "PPPs have to manage different types of risk throughout the life of a contract."