Rain Collection Roofs

Rain barrel supplies list.

Rain collection roofs.

There s just a short list of rooftop surfaces that rainwater harvesters should avoid. Research indicates rainwater is safe for irrigating vegetables read the recent research from australia and wa dept. This means you can capture about 62 gallons per sq ft. Example for every 1 of rain.

50 sq ft 31 gallons. To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above. The medium sized rain water collection system. For every 1 of rain and 100 square feet of impermeable surface about 62 gallons are generated.

A metal roof for rainwater collection is a prime choice especially when the appropriate paint system is incorporated. For every square foot of collection roof or the lid of the guzzler. While metal roofing or plastic sheeting e g. Did you know the average roof collects 600 gallons 2 271 2 l of water for every inch of rainfall.

Don t let all that water go to waste. Your roof needs to be able to withstand the weight of heavy snow and rain. Metal roofs for rainwater collection. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.

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. Read down the list for info on roofing materials for rainwater harvesting. 100 sq ft 62 gallons. Sample rainwater harvesting formula.

Here s a handy little calculator to help you estimate how much rainwater can you harvest from your roof. Traditionally this involves harvesting the rain from a roof. Collecting the rainwater that runs off your roof is a great way to conserve an important natural resource. Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.

You can make a rainwater collection system for under a hundred dollars and store hundreds of gallons of water to use for your garden or other purposes. Rainwater collection calculation formulas and equations roof area ft 2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. Greenhouse roof has the highest collection efficiency most surfaces are a ok. When designing a rainwater collection you have to consider its durability.

When you look at the numbers it s surprising how much water you can collect every time it rains. 1 of rain on 1 000 sf roof will yield 623 gallons.