Drainage Cell

Delta NP

Delta NP content required


  • Large thin sheets
  • High flow rate
  • Light weight & Flexible
  • High void ratio
  • Benefits
  • Cost effective transport and installation
  • Reduces hydrostatic pressure behind walls
  • Easy to handle, quick to install
  • Provides airlock between drainage layer and wall (double cuspated only)


Basement flooding is a major problem for many property owners this occurs when water collects and builds up behind the walls and below floors causing hydrostatic pressure, water is then forced through joints and cracks in the structure. The incorporation of Geosheet® will prevent the build-up of hydrostatic pressure by draining away excess water.

Retaining walls
Over a number of years, the Geosheet® geosynthetic drainage systems have established themselves as reliable alternatives to traditional granular drainage systems behind retaining walls.

The compact Geosheet® drainage material represents a real cost saving to contractors and clients in terms of low transportation and installation costs.