Terrain Underground Drainage

Terrain below ground drainage systems for Commercial and Public Buildings

Using the latest plastics manufacturing technology to satisfy the requirements of today’s installers, our below ground drainage range offers both rigid and foam core pipes and a comprehensive range of fittings to suit all applications.


All of our below ground systems are manufactured to the Underground Drainage (EN 1401:1998) and Plastic Inspection Chambers for Drains and Sewers (EN 7158:2001) standards.

Features & Benefits


  • Easy to lay
  • Flexible - accommodates normal ground movement
  • Adaptable - can be connected to existing drainage systems
  • Fully accredited
  • Speak to one of our business development team about your product requirement


Literature & Technical info