Rainwater Collection Off Roof

Rainwater harvesting is the process of collecting run off rainwater from a building in order to store it for later use.

Rainwater collection off roof.

Rainwater collection calculation formulas and equations. Today houses are built with roof gardens that naturally absorb the rain and grow an insulating layer of grass. Rain barrels for example do not provide any type of disinfection or filtration. Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.

Dirt and germs can be washed into collected rainwater from the roof especially when rain follows several days of dry weather 3 4 9. Typically a roof acts as the main collection source. And this is when it is operating at its least efficient rate of purification at 32 degrees f. Roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember.

Roof area m2 x precipitation amount mm amount collected liters. Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use. What is rainwater collection. When you look at the numbers it s surprising how much water you can collect every time it rains.

Around 600 gallons of rainwater can be harvested from about one inch of rain if it falls from a thousand square foot roof. It can also allow you to keep your expenses down and even reduce your carbon footprint. That is why my husband and i began harvesting our rainwater. If you re installing a new roof for the purpose of collecting rainwater standing seam metal may very well be your best choice.

1 of rain on 1 000 sf roof will yield 623 gallons. Rain barrel supplies list. To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above. New information is available about rainwater harvesting from composition roofs.

Doesn t that sound like a lot of water that you could harvest and use for free. Traditionally this involves harvesting the rain from a roof. Rainwater collection in off grid systems is one way to feed your supply. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.

A high quality enameled roofing material that is easy to clean standing seam metal offers the highest collection efficiency available.