Geocomposites for Drainage

Geocomposites for Drainage

Geocomposite Drains

Application Function

Drainage | Ground Stabilisation

Market Sectors

Highways | Landfill


1A1, 1B, 1B1, 1C1 & 1E1

Conventional granular layer drains can be replaced by higher performing, easier to install, geocomposite alternatives.

TERRAM geocomposite drains are created by bonding together textiles, membranes and nets in different combinations to suit a specific application, each layer providing a specific performance or function.

The textile layer provides the filter function, allowing liquids and gases to pass into the net core but preventing soil particles from washing into and clogging the core. 

The net layer collects the liquids and gases which can then be conveyed to collection points. 

The membrane layers are used to provide the barrier function and prevent the passage of liquids and the majority of gases.

The benefits of using Terram composite drains include:

  • high-volume flow paths for liquids and gases
  • lightweight and easy to handle
  • quick and easy to install
  • cost-effective replacement for primary natural resources
  • manufactured with high standards using state-of-the-art lines
  • reduced environmental impact by avoiding the use of natural-occurring minerals
  • lower haulage costs, lower material costs and lower installation costs

A composite must:
  • be robust to survive installation and service life
  • be stable under load to resist deformation that could ultimately restrict flow
  • have good chemical resistance

It\'s filter must:

  • possess an apparent pore size to suit the soil and prevent the ingress of fines
  • provide sustained performance without blocking

Terram composite drains have established an impressive track record in building and construction projects across the world for over forty years and are proven to satisfy these criteria and stand the test of time.


Roll Width (m)2.02.0

Roll Length (m)100100100