Designed specifically for subsoil drainage behind retaining walls, planter boxes, bridge abutments and basement walls. Nylex Cordrain™ replaced the conventional use of a vertical layer of coarse aggregates which is extremely difficult and costly to construct. Being lightweight, Nylex Cordrain™ is also particularly suitable for drainage of landscaped areas, over concrete slabs. For instance, like roof-top gardens, internal gardens, and planter boxes. At the same time, it can also function as a root barrier. Its high compressive strength and flexibility ensures long term performance, easy and fast installation.