Patent ID: 8671639

Claim:
A roof panel comprising a panel portion bounded along a support edge by a support edge section and along an opposed cover edge by a cover edge section; the support edge section and the cover edge section bent out of opposed edges of the panel portion; the support edge section comprises: a flange element located at a distal end of the support edge section, the flange element adapted for receiving fasteners for securing the roof panel to a roof structure, and a support element located between the flange element and the panel portion; the support element comprising a support ledge resiliently supported at a first end by an upwardly standing wall, said upwardly standing wall supported by the flange element, a second end of the support ledge defining a projection extending towards the panel portion, the second end of the support ledge resiliently supported by an angular portion of a second upwardly standing wall, said second upwardly standing wall supported by the panel portion, thus the support element forms a double-walled, hollow, generally P-shaped structure that connects the panel portion to the flange element, and that is adapted to provide resilient support and locking engagement with the cover edge section of an adjacent panel; and, the cover edge section comprises a cover element and a lock element: the cover element comprising a portion of the roof panel proximate to the cover edge adapted to rest on the support ledge of the second adjacent panel, a depending leg extending from the portion of the roof panel adapted to extend around and below the projection of the second adjacent panel when in locking engagement; the lock element adapted to locate a lock segment in resilient contact with the angular portion of the support element of the second adjacent panel when in locking engagement and, when in locking engagement the lock segment making planar contact with the angular portion, imparting a torque to the support element of the second adjacent panel in the direction of the support element of the roof panel when the flange element is secured to the roof section, the cover edge section thus adapted to rest upon and provide resilient sealing and locking engagement with the support edge section of a second adjacent panel.