Geosynthetic liners are factory manufactured hydraulic barriers consisting either of a layer of bentonite, polymers, or other very low-permeability materials such as concrete. Many of these liners are supported by geotextiles and/or geomembranes, mechanically held together by needling, stitching, or chemical adhesives.
Geosynthetic liner benefits include easy installation, better hydraulic performance and resistance to varying weather conditions. They are often times used in containment applications to prevent seepage of toxins in spill events outside of a specified zone. For detention or retention applications, they function as a stop gap between permeable soils and the contained water, so that it’s volume can be properly managed through a pump or drainage system.