Peak runoff values break during heavy rain events or water retention on the roof instead of expensive retention basins. The choice is yours.e
With the system Contec.retention throttle you accumulate water on the roof or on traffic roofs. It is suitable for slope-free extensive and intensive green roofs.
With Contec.retention Meander you can achieve either runoff retardation or water retention. This system is for extensive green roofs or for gravel roofs.