A safety system for plastic roof glazing, which balances / improves the weak points of conventional systems. The EVERLITE MFS protects new or existing large-area plastic roof glazing against hailstorms, offers additional protection against break-in and provides people's safety on the roof (anti-rollout). In the case of mechanical damage to external parts, a repair is possible without interfering with the operating sequence inside the hall. The light incidence is not impaired and the fire protection properties are significantly improved. The known hot air system of conventional systems can be prevented by the special back-ventilation of the system.