A rainwater system is an effective solution for collecting and disposing of rainwater from flat roofs. In these types of roofs, due to the lack of sufficient slope as in pitched roofs, rainwater does not flow naturally and may cause water accumulation and structural problems. A rainwater system directs water to the outlet ducts by creating specific paths.
Main Components of a Flat Roof Rainwater System
- Roof Drains: Roof drains are mesh pieces that are installed at specific points on the roof and collect rainwater. These pieces usually have a filter to prevent leaves and other particles from entering the system.
- Collection Pipes: Collection pipes direct rainwater collected by the gutters to the main pipes. These pipes are usually placed under the roof insulation to protect them from freezing and possible damage.
- Downspouts: The main pipes direct rainwater from the collection pipes to the bottom of the building. These pipes can be run vertically or at a gentle slope.
- Outlet: Outlets direct rainwater from the main pipes to a water disposal system (such as a septic tank, irrigation system, or municipal sewer).
How the rainwater system works
After hitting the roof surface, rainwater is collected by gutters. It is then directed through collection pipes to the main pipes and finally to the outlet ducts. If there is a storage tank, rainwater is collected in the storage tank and used for various purposes. Otherwise, rainwater is directed to the water disposal system and away from the building.
Benefits of using a rainwater system
- Preventing water accumulation on the roof and the problems caused by it
- Protecting the roof insulation and increasing its lifespan
- Reducing the additional load on the roof structure
- Possibility of reusing rainwater for various purposes
- Reducing water consumption costs
- Protecting the environment
Electrofusion rainwater system
In this system, it will be possible to use 16-bar polyethylene pipes, and as a result, it is possible to test the water column up to 160 meters high. This system, using electrofusion connections, practically creates an integrated welded system that no longer has any muffs or O-ring connections in the network, reducing the possibility of leakage to zero.
Also, this polymer system is certified by the Building Research Center due to the use of flame retardant materials in polyethylene pipes in class E and above, and there are no restrictions on its use.