Power and Water Corporation provides water and sewerage services across the Northern Territory, an area of more than 1.3 million square kilometres.


The flooring system of the Marrara water tank comprises concrete slabs and joints. The seal system was at the end of its design life and required replacement.

Duratec was engaged to remove the existing floor slab joint system and install a Sikadur-Combiflex® SG joint system.


  • Over 1,500 lineal metres of joints were removed and replaced.
  • The works were completed within the specified time frame.
  • The Duratec work crew exceeded production requirements despite the hot and humid working conditions.


  • Joint Sealing
  • Precision Grouting
  • Waterproofing

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