Collecting rainwater is a technique that has been practiced for centuries as an environmentally friendly method to collect rain for distribution in gardens and across landscaping.
How to collect rainwater from roof.
Just lay the tarp out on an elevated area and run a drainpipe from the lowest corner to a collection tank.
To prevent the barrel from becoming a mosquito breeding ground fasten a tight fitting top to it and screen the ends of the downspouts leading.
When you look at the numbers it s surprising how much water you can collect every time it rains.
If you don t have a roof garden though you can still collect rainwater and use it.
To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above.
Rain barrel supplies list.
How much rainwater can you harvest from your roof.
If you want to collect rainwater without a roof or downspout you can use a tarp instead.
Dust smoke and soot from the air can be dissolved in rainwater before it lands on your roof.
In most locations today you will find that most people build their houses with roof gardens that will absorb the rainwater.
Not only will the collection system water the plants but it also filters out harmful materials that are typically present in rainwater.
Begin by stalling a heavy duty liner on top of the roof.
Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.
Traditionally this involves harvesting the rain from a roof.
The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.
To collect rainwater you can attach a rain barrel to your home s downspout so when it rains the water flows directly into the barrel.
Then add some soil on top of the liner to create garden beds.
Installing a garden roof is another way to collect and use rainwater.
Hence growing a layer of grass.
Here s a handy little calculator to help you estimate how much rainwater can you harvest from your roof.
Today houses are built with roof gardens that naturally absorb the rain and grow an insulating layer of grass.
To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches.
Rainwater for gardening collection is a technique that has been widely practiced over the centuries.