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That which protects also
collects... What we're talking about here is rooftops being multi-functional. The same roof surface that is keeping the rain off of your head or your stuff is a tool for gathering rainwater as well. A roof which is under clear air and without overhanging vegitation is well set to be a rainwater harvesting surface. In general the debris present on a well set roof are |
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A 6-inch seamless gutter can be made of
copper, steel or aluminum by an installer in many locals. Gutters fitted continuous, without coupled sections make for smooth, leak free function and larger size/capacity allows for fewer downspouts. The ogee style can be fitted with heavy duty screens. |
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no major concern, certainly when compared with the potential contaminants
on or in the ground. Certain types of roofing will work better than others for rainharvesting. Seamed sheet metal looks to be the best choice at this point. There are no shingling layers to trap debris. After many years of use, water tests have shown no concerning residuals from metal roofs. The amount of roof needed varies as to the annual rainfall and seasonal patterns. How much you can collect from any roof is always the same: 0.6 gallons per square foot per inch of rain. You can gather 600 gallons of rainwater from a one inch rain on 1000 square feet of roof. The square feet of a collection surface is measured flatly from edge to edge, so be sure to add the overhangs and not add for pitch. |
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If you would like to know more on
rainwater see: Did You Know ? |
