Project Details

Project Name: Harewood Underpass

Applicator: Absolute Waterproofing

Products Used: Volclay product range

Completed: June 2016

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The Project 

Project Overview: 

The Harewood Underpass is a pivotal infrastructure development located at the intersection of Russley and Harewood Roads in Christchurch. This 80-meter enclosed section facilitates pedestrian and cyclist movement and enhances safety en route to the expanding Christchurch International Airport precinct. 

Challenges: 

The primary requirement for the underpass was to achieve robust, long-lasting waterproofing to preserve the integrity of its profiled panel façades and architectural coatings. Ensuring a watertight environment was crucial to maintain the structural integrity under varying environmental conditions. 

Solutions Implemented: 

To meet these challenges, Allco’s Volclay tanking range was selected for its superior waterproofing capabilities and resilience. The project utilized: 

Voltex: Applied to the underpass slab, ensuring a durable and effective moisture barrier.Swelltite and Aquadrain: Used on the walls and roof, providing added layers of protection. Swelltite’s high-swelling, self-sealing sodium bentonite offers both passive and active water ingress barriers, while Aquadrain assists in collecting and redirecting water away from the structure to designated drainage outlets. 

Execution and Results: 

The installation of these waterproofing systems was expertly carried out by Absolute Waterproofing Solutions, an Allco-approved applicator. Their meticulous application not only met but exceeded project specifications, resulting in a robust, watertight underpass that promises longevity and durability.