Collecting and efficiently removing the water which percolates through permeable surfaces can be a problem.
The Elena Collection System is the answer.
Shown before permeable surface has been laid
Water percolates down until it reaches an impermeable layer. It then travels along this surface until it encounters the duct. Slots in the side faces of the duct allow the water to enter when it is carried to a suitable drain and discharged.
Depending on the water volumes single or twin ducts can be used. Other sections are available to address differing volumes.
The ducts are set into the impermeable surface level with the inlet slots. The entire duct and the surrounding area is then covered in bonded aggregate.
Access covers are incorporated to permit inspection and maintenance. These are securely fitted and have an attractive appearance.