Roof forming element, roof, and method of manufacturing

A roof forming element, a plurality of which may at least partially form a roof which closes an opening of a building, each of said plurality of roof forming elements closing a part of said opening,

• said roof forming element comprising
• a base part comprising an elongate roof plate comprising a polymer, the base part having a length, defining a length direction, and a width, and having an exterior side, and an interior side, opposite the exterior side, facing an inner space of the building, in use,
• a cover for at least substantially covering the exterior side of the roof plate at a distance therefrom, connected to the roof plate, so as to define an interior space of the roof forming element between the cover and the roof plate, and
• coupling means for coupling the roof forming element in use to a further, neighbouring roof forming element of said plurality of roof forming elements extending in parallel to the roof forming element,
• the base part comprising an elongate reinforcement part comprising a strip comprising a polymer and unidirectional fibers, bonded to the base part at the interior side of the base part and extending in the length direction along the length of the base part, the elongate reinforcement part covering at least a part of a width of the base part,
• the strip of the elongate reinforcement part having a higher Young's modulus than the base part, or at least a part of the base part to which the elongate reinforcement part has been bonded.