| 摘要 |
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. A sloping portion of the water dam extends upwardly and outwardly from the upper horizontal dam portion and then bends to form a vertical dam portion extending in front of the tab portion and the nailer structure and past it. An outwardly sloping drip flange is formed at its lower end. An optional fascia or cover plate configured similar to the water dam can be fitted into place on the water dam. One embodiment of the cover plate has an inward horizontal portion for securing single-ply roofing membranes along the plane of the roof.
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