Installing a garden roof is another way to collect and use rainwater.
How to collect rainwater from roof.
Rainwater for gardening collection is a technique that has been widely practiced over the centuries.
When you look at the numbers it s surprising how much water you can collect every time it rains.
Traditionally this involves harvesting the rain from a roof.
The easiest way to harvest rain is through a rain barrel make your own from a large trash can or an old drum linked to a pipe fitted to collect rainwater from the rooftop and verandah of the house.
Dust smoke and soot from the air can be dissolved in rainwater before it lands on your roof.
To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches.
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.
Not only will the collection system water the plants but it also filters out harmful materials that are typically present in rainwater.
Hence growing a layer of grass.
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.
Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.
Here s a handy little calculator to help you estimate how much rainwater can you harvest from your roof.
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.
If you don t have a roof garden though you can still collect rainwater and use it.
Just lay the tarp out on an elevated area and run a drainpipe from the lowest corner to a collection tank.
Then add some soil on top of the liner to create garden beds.
In most locations today you will find that most people build their houses with roof gardens that will absorb the rainwater.
If you want to collect rainwater without a roof or downspout you can use a tarp instead.
Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use.
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.
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.