Cavidrain Protector - geocomposite drain tunnel linings

Cavidrain Protector is used as a drainage layer to collect infiltration water from behind tunnel linings. It may be used alone or form part of a system incorporating geomembranes. Typically Cavidrain Protector is fixed to the excavated face of the tunnel and covered with shotcrete which will adhere to the back of the Cavidrain sheet: road tunnels