Permavoid Geocellular System

The Permavoid system comprises of high strength modular cells suitable for sub-base replacement, plus components that incorporate silt / oil treatment and shallow flow controls into the system.

The Permavoid system can be used in place of a traditional aggregate sub-base within trafficked pavements, providing a unique high strength, consistent structural raft in accordance with BS7533-13:2009. The geocellular structures have a void ratio up to 95%, greatly enhancing the pavement's attenuation capacity and reducing aggregate requirements in hydraulic pavements. The system is suitable beneath asphaltic, block-paved or concrete pavements and for the full range of traffic conditions from domestic driveways to highways.


Features & Benefits


  • Designed and tested for retention, attenuation or infiltration at shallower depths
  • Effective source control
  • Can be installed above a high water table
  • Allows water to spread across a site
  • Ideal for brownfield or contaminated sites
  • Can remove silt and hydrocarbon deposits
  • Removed the requirement for pumping stations
  • Oil interception at source, no petrol interceptors
  • Integrates with Polystorm geocellular solutions for deeper applications
  • High compressive and tensile strength under load
  • Suitable beneath both porous and non-porous surfaces
  • Reduces excavation depth and cost
  • No need for trench supports or associated plant
  • Permavoid System Applications

    The Permavoid system is designed to be used in place of traditional aggregate sub-base, providing a unique, high strength, consistent structural raft with all the benefits of a high voided modular geocellular structure.

  • System Components

    The Permavoid System comprises of a number of components which may be utilised within a SuDS design


Literature & Technical info

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