Patent ID: 8215082

Claim:
A substantially flat roof comprising: a plurality of generally log-shaped members made of a material selected from the group consisting of metal and plastic, elongated along respective axes and arranged in adjacent, side-by-side relation with the axes extending horizontally, each log-shaped member having an upwardly convex contoured upper surface, the contoured upper surfaces of adjacent members defining between them a space that tapers from a maximum width at the highest elevation of the contoured upper surfaces to a minimum width where the contoured upper surfaces of adjacent log-shaped members are closest together; and a plurality of inserts respectively arranged in said spaces between said contoured upper surfaces, each insert being elongated in said axial direction, having a wide portion that abuts an adjacent pair of said contoured upper surfaces at a relatively high elevation, and tapering in abutting relation to said adjacent pair of contoured upper surfaces to a narrow portion that abuts said contoured upper surfaces at a relatively low elevation substantially at the ends of said adjacent pair of log-shaped members; so that rain falling on the substantially flat roof drains down from the respective contoured upper surfaces to the respective inserts and from the inserts down towards the respective narrow portions of the inserts and falls from the roof.