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It depends on the quality of installation, but on average exposed fastener metal roofs (which do, indeed, use EDPM washers if not of very low quality and life-expectancy) are a 15-25 year roof, while a quality standing seam job is a 50 year roof. The EDPM washer is not a band-aid - it's a part of this roofing system design (and most of the fasteners are ...


Maybe. Generally, the number and size of the downspouts is sized to handle a certain water volume. So if two downspouts were installed, then they probably can't handle just two. Also, the gutters have to be pitched at down 1/2 inch for every 10 feet. If your facia board isn't tall enough to handle that slope for the entire length, then you need two ...

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