Apart from standard geotextiles Terram also has some specialized drainage composites (Geocomposites) where is a ready made solution to the sub soil drainage and for vertical drains.Drainage composites normally cosists: a two or more different components : a three dimensional polymer core, which acts as the water transport medium, a geotextile filters and sometimes impervious geomembrane. This allows water to pass through in to the polymer core but prevents the soil from watering through i.e. This combines the level function of filtration and drainage in a single flexible sheet.

Drainage composites are designed for structures requiring vertical drainage. Sub Surface Drainage, Protection of the waterproofing system from mechanical damage and puncturing. Drainage composites can be used alongside structured such as bridge abutments and building walls, replacing porous concrete block, no-fines concrete and other conventional materials.

Drainage composites can be used alongside structured such as bridge abutments and building walls, replacing porous concrete block, no-fines concrete and other conventional materials.

Furthermore, because composites can be installed prior to back filing, that work can be done free of interruption.