Geonets are typically formed by two bi-planar sets of relatively thick, parallel, polymeric (usually polyethylene) ribs bonded in such a way that the two planes of strands intersect at a constant acute angle, forming a diamond-shaped pattern. They can also be manufactured in Tri-Planar configuration.
Geonets are used extensively in drainage applications and as leak detection systems forming part of a composite lining system with other geomembrane and geosynthetic materials.
Geonets can be modified by the addition of a geotextile to one or both sides to create a Geocomposite. They come in single-sided and double-sided configurations. These hybrid Geocomposites are primarily used for filtration, drainage and gas collection applications.