A roof system includes a closure that opens a roof opening in a vehicle. An operating mechanism for the closure includes a first device including a lever configured to move the rear edge of the closure towards a raised position above the roof. A second device includes a lever configured to move the front edge of the closure in a vertical direction. At least one of the levers has a first pivotal connection at a first end of the closure, and spaced second and third connections connecting the respective lever at least to a guiding slide. At least one of the levers is pivotally connected to a sliding member at one of said second and third connections. The sliding member is separate from the guiding slide, slides in the longitudinal direction of the guide rail and is supported by the guide rail in directions perpendicularly to the longitudinal sliding direction.