Roofing question - How many downspouts do I need for a given area of roof?
I found some sites that allow you to calculate downspout/gutter
requirements.
This is one of the best:
http://www.copper.org/applications/a...uts/intro.html
This Google search came up with several good sites:
http://www.google.com/search?sourcei...spout+syst em
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