Roof For Rainwater Harvesting

Roof material the material of the roof is not as important as contaminants that may be on the roof.

Roof for rainwater harvesting.

The good news is most roofing materials are suitable for rainwater harvesting. Asphalt shingles are the most common material used on roofs and luckily they are also a very good option when it comes to rainwater harvesting. The problem is that some shingles can leach off certain contaminants into the water causing the rainwater system to fail even for irrigation only. There is very little water loss with tin around 5 and no worries of contaminants leaching out from the tin with an approved nsf 61 coating.

For the vast majority of tank based rainwater harvesting systems the catchment area is the roof surface. For landscape purposes the common asphalt shingle will work fine. There are some important factors about the roof to consider when planning for a rwh system. Your roof surface area is the size of your roof expressed in square metres or feet.

Specifically this is set up for my rainwater garden area but c. There s just a short list of rooftop surfaces that rainwater harvesters should avoid. Tin tin is one of the best rainwater harvesting roof materials to have on a project. Greenhouse roof has the highest collection efficiency most surfaces are a ok.

As your roof surface is the catchment area for harvesting rainwater it s important to know how large or small it is so you can calculate how much rainwater you can expect to harvest. While metal roofing or plastic sheeting e g. And this is when it is operating at its least efficient rate of purification at 32 degrees f. New information is available about rainwater harvesting from composition roofs.

The quality of water coming off of a roof during a rain tends to improve as the rain continues. One of the main reasons is their uneven surface it makes it harder for soot and other pollutants and dirt to gather on top of it. If done with care and maintenance roof catchment of rainwater is a very good source of drinking water. Asphalt shingles many shingles work with rainwater harvesting.

For single storey homes your roof surface area will often be greater than your floor area unless you have a flat roof. The rooftop rainwater harvesting is a method from which rainwater is captured from the roof catchments which is then stored in reservoirs and by adopting artificial recharge techniques to meet the household needs through storage in tanks harvested rainwater can be stored in the sub surface groundwater reservoir. Fecal coliform can be well above guidelines all government guidelines regardless of roofing material.