Abstract: A roof edge assembly having a metal water dam adapted to be fastened at the edge of the roof to the nailer structure thereof to define a raised roof edge. The water dam has a lower horizontal dam portion positionable generally flush with the upper surface of the nailer structure and extending inwardly a distance past the nailer structure and onto the adjacent insulation and then bending onto itself to form an upper horizontal dam portion. Two thicknesses of metal thereby provided decrease the bowing at the mechanical securement points of the water dam. The water dam at the forward edge of the lower horizontal dam portion is bent downwardly for about a half an inch to define a tab portion which provides positive edge securement to the nailer making attachment and alignment thereof easier, and minimizing wind infiltration.