Infrastructure Management

Our full range of services can be applied to Infrastructure Works.  Recent projects undertaken by Topcoat Specialist Coatings include the Johnston Hill Tunnel at Puhoi, Grafton Bridge Rectification, and Hobson Bay sewer upgrade.


Johnstone's Hill Tunnel, Puhoi 

Topcoat's team applied the Ceramicoat C Epoxy coating that spans each side of the tunnel to a height of 4 metres.  This coating increases reflectivity, reduces carbon emissions build up, and provides a durable, easy to clean surface.  The coating was spray applied to a total area of 6,200m².


Grafton Bridge Rectification

Working with Brian Perry Civil and Mapei, Topcoat staff applied the Mapelastic anti-carbonation coating to the concrete structures.

This process required the use of specialist spray pump equipment to apply a 2mm coating from swinging stage platforms & full access equipment, with separate teams working day and night shifts.  The Mapelastic coating provides a breathable, waterproof system, and maintains the concrete 'textured look' to this 100 year old structure.

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