A vacuum blocker for a movable roof panel is provided and moves between an open position and a closed position and between a seated position and a lifted position when in the closed position relative to an opening formed in a fixed roof panel of a vehicle. A seal member is supported by the fixed roof panel and forms a first seal at a junction of the fixed roof panel and the movable roof panel when the movable roof panel is in the seated position. A flap extends between the seal member and the movable roof panel and forms a second seal at a junction of the seal member and the movable roof panel when the movable roof panel is in the closed position and is moved from the seated position to the lifted position.

A sunroof apparatus includes: a movable panel adapted to open and close an opening formed in a roof of a vehicle; a guide rail provided in each edge portion of the opening in a width direction of the vehicle such that the guide rail is positioned below the movable panel in a height direction of the vehicle; an attachment member fixed to the movable panel, including a flange extending toward an interior side in the width direction in each edge portion in the width direction, in which an attachment recessed portion is formed in the flange; and a shielding body including interposing pieces which are provided to extend in a forward and rearward direction of the vehicle, slidably engaged with the guide rail, and extending in the width direction of the vehicle while being spaced away from each other in the height direction of the vehicle.

A sunroof apparatus includes: a movable panel adapted to open and close an opening formed in a roof of a vehicle; a guide rail provided in each edge portion of the opening in a lateral direction, and including upper and lower flanges extending in the lateral direction and a connecting wall through which the respective outside ends of the upper and lower flanges in the lateral direction are connected to each other in the vertical direction; and a shielding body attached to each edge portion of the movable panel in the lateral direction, and including an extending piece that extends to the outside in the lateral direction while being interposed between the upper and lower flanges, wherein the shielding body includes first and second projections which are provided in the extending piece and can be respectively brought into contact with the upper and lower flanges.