Designed specifically for subsoil drainage behind retaining walls, bridge abutments and basement walls, cordrain replace the conventional use of a vertical layer of coarse aggregates which is extremely difficult and costly to construct. Being light-weight, cordrain is also particularly suitable for drainage of landscaped areas over concrete slabs, for instance, roof-top gardens, internal gardens, planter boxes and also tunnel linings. Its high compressive strength and flexibility, easy and fast installation. Key benefits- Fast installation, lightweight, high water flow capacity, high compressive strength, simple joints, flexible, no on-site fabrication and no aggregates required. Nylex Cordrain Certification(s): MS ISO 9001