Drainage Cell GrasCell® DC20  is a lightweight flexible, sub-soil drainage module. This mat is manufactured from a UV-stabilised, 100% recycled polypropylene with Singapore Green Label certified. It replaces the traditional use of heavy granite aggregates for sub-soil drainage. It also acts as a protection board for waterproofing membrane. GrasCell DC20 reduces sound transmission and increase heat insulation.

Depending on the requirements of each project can choose the type of height 20mm, 30mm or 50mm.


  • Lightweight
  • High strength and flexible
  • Cost effective
  • Easy handling and  installation
  • Efficient sub-soil drainage
  • Suitable for retrofitting and/or new projects
  • Reusable and recyclable


GrasCell® DC20 applied to areas on roof gardens; Landscape decks; Plaza decks, Planter boxes; Previous pavements; Roadways and carparks; Tunnels, Landfills, Retaining / basement walls; Golf courses; Sports fields and parks, Railways and airports, Under gravel filter systems, Weep hole covers  ...


Product GrasCell DC20
Material Recycled PP
Height (mm) 20
Width (mm) 500
Length (mm) 500
Compression Strength (tonnes/m2) >200
Weight (kg/m2) ~2.6
Water Discharge (l/m.s) 11
Airy surface 65%
Color Black