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RootDirector Riser

Root control building block system.

Fast, light, strong. The RD Riser from GreenBlue Urban. Root control building block system for deeper surface and subbase layerworks designs eliminating the need for concrete. Providing high vertical and lateral support, the interlocking single component is modular, designed to be built up to multiple configurations and any depth. A reinforced option is available for maximum lateral and vertical loading requirements. Can be used with or without a GBU RootDirector on the top.


  • Instant structure – no waiting for concrete curing
  • No concrete required
  • Low carbon – UK manufacture from 100% recycled and 100% recyclable material
  • Low cost and safe, single-person installation – no equipment necessary
  • Multiple configurations possible


  • Single interlocking component
  • Root deflecting ribs
  • Locks into RootSpace tree opening
  • High strength, minimum material, honeycomb structural design


Material100% recycled polypropylene
Manufacture locationInjection moulded in UK


Product CodeDescription
RDR100RootDirector Riser Modular and Structural Root Director System 500x100x100mm


RD Riser ConfigurationNumber of units per 100mm layer


RD Riser ConfigurationMinimum tree grille frame sizeSuitable RootDirector


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