What is StrataVault® 

StrataVault® is structural RootCell® module, manufactured from recycled polymers. Designed to provide optimal growth zone for tree roots where high compressive strength is required and needed to withstand heavy traffic loads.

StrataVault® provides a load bearing structure beneath hard landscapes. They allow loading of quality top soil for tree root systems over these areas without the fear of settlement leading to surface subsidence.

StrataVault® units can be quickly and easily assembled and installed and are securely connected together both vertically and laterally with a simple snap feature.

StrataVault® has an ultimate strength in excess of 300 kPa without relying on steel bar reinforcement (subject to corrosion).

  • Carparks
  • Roadways
  • Public Spaces i.e. Footpaths and Plazas
  • Road Medians
  • Linked Treepits
  • Water Harvesting
  • High compressive strength in excess of 30t/m² but lightweight
  • Applied loads are shared evenly and lateral strength maximised
  • In excess of 90% of total soil volume available for tree-root growth
  • Large apertures within cells enable common conduits, service pipes and aeration systems
  • High integral strength allows it to be trimmed around obstacles and unusual services
  • Rapid assembly minimises on-site disruption
  • No steel components required for strength reinforcement
  • Compact module design works well with confined or difficult treepit sizes
  • Made from 100% recycled polymers; ensuring maximum environmental stewardship
  • Can be used to combine urban tree planting with Water Sensitive Urban Design for optimised stormwater management
  • Used to provide healthy trees at paved areas
100% Recycled Polypropylene
Dimensions (L x W x H)
600 mm x 600 mm x 404 mm
Free Volume
Above 90%
Ultimate Load Strength (FEA & Lab Tested)
300 kPa
Important Note:
Request StrataVault® Construction Details for matrix dimensions in plan and elevation.