Manufacturing method for roof module

A manufacturing method for a roof module comprising:

• a roof panel to be disposed on a roof of a vehicle;
• a pair of guide rails extending in a front-rear direction of the vehicle along an inner surface of the roof panel and mounted on the roof panel via a mounting member;
• a shade sheet guided by the guide rails;
• and
• a winding device supported by the guide rails and configured to wind up the shade sheet, the method comprising:
• a step of fixing the mounting member to the inner surface of the roof panel;
• a step of assembling a shade unit provided with the guide rails, the shade sheet, and the winding device;
• a step of attaching a jig for keeping the guide rails parallel to each other to the shade unit;
• a step of fixing the shade unit to which the jig is attached to the mounting member;
• and
• a step of detaching the jig from the shade unit mounted to the inner surface of the roof panel,
• wherein the jig comprises a pair of parallel retention members extending in a width direction of the vehicle to be parallel to each other and retaining the guide rails, and a spacing retention part that connects the parallel retention members to each other and keeps the spacing between the parallel retention members constant.