For a roof with no gutters position your barrel under the valley of the roof where two sloped planes meet use a decorative rain chain to get water into your barrel.
How to harvest rainwater from roof.
Generally the bigger the better as more square footage will allow you to store more rainwater.
You will need 7 basic components to harvest rainwater.
If you re thinking about rainwater harvesting also known as roof water harvesting you may be wondering about the best roofing materials for rainwater collection.
Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use.
Harvesting rainwater from your home is easier than you might think.
Make a rain barrel if you have gutters and downspouts on your house or garage you have a fantastic system for harvesting soft clear rainwater for the garden.
Whether you re working with existing conditions or spec ing out a brand new roof we ve got expert advice for you.
Modify an existing downspout to divert water into your rain barrel.
The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.
Try harvested rainwater for any non potable application.
The only missing piece is a collection reservoir otherwise known as a rain barrel.
Annual rainfall in millimetres x roof surface area in square metres roof catchment capacity.
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.
Traditionally this involves harvesting the rain from a roof.
To find one check with companies that buy food ingredients in bulk.
Catchment surface the catchment surface refers to the roof which will collect rainwater.
To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches.
This capacity can be calculated using the following formula.
The catchment surface is one of the most important parts of harvesting rainwater.
Here s a handy little calculator to help you estimate how much rainwater can you harvest from your roof.
How to harvest rainwater from your home.
Just lay the tarp out on an elevated area and run a drainpipe from the lowest corner to a collection tank.