US Patent 7997027 Modular roof system with border secured without fastener

A roof system includes modular trays placed side-by-side on a roof, and a border along the boundaries of the system. The border includes side members with walls that extend from the roof to the top of the modules, along the length of the outer sides of the modules, to conceal the otherwise exposed sides of the modules. The side members include feet that extend along the roof line, from the base of the sidewalls to below the outer perimeter of the modules such that the weight of the trays holds the feet against the roof. The feet are formed with upward projections that are gravitationally engaged into voids formed in the bottoms of the modules to lock the side members in position at the sides of the modules.