Rainwater collector

Calculate the surface of your roof and the average volume of water you could save, through the use of a rainwater collector, depending on your type of roof.

Choice of roof type

Flat roof covered with gravel

Flat roof covered with synthetic material or bitumen

Flat roof covered with grass or other plants

Sloping roof covered with panels or tiles

Sloped roof covered with synthetic material or bitumen

Sloping roof covered with grass or other plants

Recovery rate of your roof (automatic) %

Length of a roof slope cm

Width of a roof slope cm

Average rainfall per year mm

To know the average rainfall for your country, Click here then enter the average rainfall per year above.

Roof surface and recovered water

Total roof area (2 slopes) m²

Average volume of water recovered in 1 day Liters

Average volume of water recovered in 1 month Liters

Average volume of water recovered in 1 year Liters

Info

Optimal materials for the roof: prefer tiles, natural slates, zinc and glass.
Other materials available: concrete, galvanized iron corrugated iron, plastic.
For good water quality, do not use for roofing: Copper, aluminum, synthetic materials, tar, wood, green roof.