Burdett’s, proudly supplying materials to projects across Australia and the world.

Burdett’s proudly supplies materials to conservation projects across Victoria, including the new Roof Garden on the Reverse Ozmosis (RO) building at the Desalination Plant at Wonthaggi, the largest Green Roof in the Southern Hemisphere, comprising 100,000 indigenous plants & shrubs, making the plant itself more environmentally friendly.


Volume Calculator

Unit Type

“All volumes are loose, no compaction has been allowed for”


  • Location: Docklands, Melbourne, Victoria
  • Architect: N/A
  • Principal Contractor: Bovis Lend Lease
  • Landscape Architect: Tract - Melissa Dunlop
  • Completion: 2005

This semi-intensive roof garden incorporates a Fytogreen lightweight topsoil mix and Hydrocell RG30 sub-topsoil water reservoir layer.

Located on the 4th floor, the 750sqm lawn of tall fescue grass has limited root zone depth due to the engineering design constraints in addition to the requirement to have a limited step down to the surrounding paving. The profile has 25mm Fytonop drain layer, 2mm geofabric layer with a 60mm Hydrocell RG30 sub-topsoil layer, and 80mm Hydrocell 40 podium composite mix layer.

The combination of Hydrocell RG30 and Hydrocell 40 podium soil mix makes this slimline profile possible because it increases the usable media volume of the profile for root growth compared to the use of sand as a sub-topsoil layer.