For example on a 2 000 square foot roof you can collect 2 000 x 0 56 1 120 gallons inch of rain.
Rain off a roof.
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The volume harvestable is dependent upon your roof catchment area but can be quite substantial over the course of a year.
Take the dimensions of the footprint of your roof and convert them to inches.
Allowing the high volume of water to flow over the roof will damage the shingles and cause them to wear prematurely.
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I am thinking a rain diverter would help help with this problem as it would let the water disperse into the rain gutter.
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How far back from the edge of the roof would i need to put the rain diverter.
I have rain water that comes off to fast from the roof and runs right over the gutters.
Wondering how much rainwater you could collect off your roof.
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Even if you turn the spout adjacent to the slope it will still cause damage to the roofing.
Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.
So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall.
This article will help you to know how much rainwater you can capture on your property.
To calculate the runoff from any given rainfall.
Spreading the flow over the roof in this way will not alleviate the damage that is caused.
Use this rainwater harvesting calculator to find the answer.
To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above.
If your average rainfall was 25 inches year your annual collection potential is 1 120 x 25 28 000 gallons year.