Rainwater Harvesting Roofs

For the majority of rainwater collection a roof acts as the primary catchment area.

Rainwater harvesting roofs.

How much rainwater can you harvest from your roof. Rainwater harvesting is collecting the run off from a structure or other impervious surface in order to store it for later use. There s just a short list of rooftop surfaces that rainwater harvesters should avoid. Rainwater is collected from a roof like surface and redirected to a tank cistern deep pit well shaft or borehole aquifer or a reservoir with percolation.

The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel. To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches. Furthermore it is possible utilise rainwater harvesting of a green roof contrary to claims from other industries. For the vast majority of tank based rainwater harvesting systems the catchment area is the roof surface.

However there are two issues. While metal roofing or plastic sheeting e g. Rainwater harvesting or rainwater collection is the process of collecting the run off water from a structure in order to store it for later use. Roof types for rainwater harvesting.

Traditionally this involves harvesting the rain from a roof. There are some important factors about the roof to consider when planning for a rwh system. Roof material the material of the roof is not as important as contaminants that may be on the roof. Here is a list of the most common roof types and if they can be used for rainwater harvesting.

The texas manual on rainwater harvesting recommends using between 75 and 90 depending on how efficiently the rainwater harvesting system collects rainfall conversion factor is a factor of 0 62 used to convert the total amount of rain in inches that falls onto the roof area to total monthly gallons of harvesting potential. Tin tin is one of the best rainwater harvesting roof materials to have on a project there is very little water loss with tin around 5 and no. Typically rainwater will collect in the gutters move into the downspouts and finally collect in a storage. Greenhouse roof has the highest collection efficiency most surfaces are a ok.

Dew and fog can also be collected with nets or other tools. Rainwater harvesting rwh is the collection and storage of rain rather than allowing it to run off. The good news is most roofing materials are suitable for rainwater harvesting. In fact it is quite common to harvest water from green roofs in germany and switzerland.