Rain Collection Roofs

Rainwater collection systems can be as simple as collecting rain in a rain barrel or as elaborate as harvesting rainwater into large cisterns to supply your entire.

Rain collection roofs.

Your roof needs to be able to withstand the weight of heavy snow and rain. Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water. Rain barrel supplies list. Read down the list for info on roofing materials for rainwater harvesting.

There s just a short list of rooftop surfaces that rainwater harvesters should avoid. Traditionally this involves harvesting the rain from a roof. Research indicates rainwater is safe for irrigating vegetables read the recent research from australia and wa dept. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.

Metal roofs for rainwater collection. Example for every 1 of rain. The medium sized rain water collection system. Don t let all that water go to waste.

When you look at the numbers it s surprising how much water you can collect every time it rains. Rainwater collection in washington state outlines the department of ecology s 2009 policy decision allowing rainwater collection and reuse systems and has many useful links. Did you know the average roof collects 600 gallons 2 271 2 l of water for every inch of rainfall. Collecting the rainwater that runs off your roof is a great way to conserve an important natural resource.

Greenhouse roof has the highest collection efficiency most surfaces are a ok. To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches. This means you can capture about 62 gallons per sq ft. A metal roof for rainwater collection is a prime choice especially when the appropriate paint system is incorporated.

1 of rain on 1 000 sf roof will yield 623 gallons. While metal roofing or plastic sheeting e g. To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above. For every 1 of rain and 100 square feet of impermeable surface about 62 gallons are generated.

100 sq ft 62 gallons. Sample rainwater harvesting formula. Water is often in short supply in the heat of summer so it s tempting to use roof runoff. For every square foot of collection roof or the lid of the guzzler.

When designing a rainwater collection you have to consider its durability. Rainwater collection calculation formulas and equations roof area ft 2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember.