Thames Tree Grille - GreenBlue Urban
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Designing tree grilles is something GreenBlue Urban have been doing for over 2 decades. Beautiful timeless patterns have been created which add quality and flair to the urban environment. The fundamental critical purpose of tree grilles is to prevent soil compaction around the rootball. We have developed highly engineered design principles and finishing processes to ensure the durability of the structure and the coatings is robust enough to perform under harsh urban environments.


  • Prevents compaction of soil
  • Enables water to freely access rooting area
  • Can be disassembled if needed for major tree maintenance
  • Design and built to be strong enough for light vehicular overrun


  • Heavy duty powder coated mild steel support frame
  • Powder coated mild steel fabricated segments
  • Integrated irrigation system
  • Anti-theft lugs
  • Stainless steel fixings
  • Fully compatible / integrates with GBU below ground systems
  • Integral vertical guard fixing points
Code* Outer Dimensions Central Aperture
THAMES10P 1000mm 500mm
THAMES12P 1200mm 600mm
THAMES15P 1500mm 600mm
THAMES18P 1800mm 600mm

*Suffix P=Powder coated, C=Corten steel, G=Galvanised steel

Product Includes

  • Powder coated steel segments
  • Powder coated steel frame
  • RootRain Hydrogrille irrigation system
  • Stainless Steel fixings
  • Intergral vertical guard fixing points

Vehicle overrun

  • Maximum 1.5 tonne SMWL (Slow Moving Wheel Load)


  • Standard: Mild steel
  • Bespoke options: Stainless Steel grade 304, Stainless Steel grade 316


  • Powder coated to RAL9005 black, other colour finishes available.


  • Spare fixing kit


  • Visual periodic inspection of irrigation/aeration inlets: Remove, clean and replace filter brush periodically.

Bespoke Options

  • Full design and development service available
  • Heel safe / DDA requirements
  • HGV loading requirements
  • Slip resistance requirement
  • Full range of RAL colours available to order

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