A collapsible roof assembly for a vehicle includes a collapsible roof and a sealing mechanism. The roof has a top rail with a frame element running along a longitudinal side of the roof. The sealing mechanism has a seal configured to receive and seal a window pane inserted therein, wherein the seal runs along the longitudinal side of the roof and is attached to the frame element. The seal has a similar cross-section between front, middle, and rear sections of the roof. The seal is attached to the frame element in a form-fit manner in the front section of the roof and is attached to the frame element in a force-fitted manner in the middle section of the roof.