Christchurch Botanical Gardens

Challenge

The iconic Christchurch Botanical Gardens visitor centre has a complex roof - a 1,000m2 saw tooth design with termination points featuring glass. As the self-proclaimed ‘Garden City’, it was important to create a comfortable environment for both the plants and the 1.4 million visitors per annum; particularly during the colder months.

The new building was designed by award winning Auckland Architect Pattersons; with design and installation of the roof taking 4 years from start to finish due to the interruption of earthquakes.

Solution

Viking Roofspec recommended installation of a WarmRoof adhered over 75mm-thick polyiso.

White Enviroclad was used as it provides 92% solar reflectivity, (which provides numerous energy savings benefits), while the R-Value (measure of thermal resistance) of the WarmRoof system is the highest in the construction industry.

There were a number of challenges that came to Viking’s attention during the project:

Multiple redesigns from the glass manufacturers required changes to the roof design at the termination points;

Winter weather;
Substandard plywood had to be replaced before Viking's Warm Roof solution could be installed.

Result

With the Viking Warm Roof System installed, the Christchurch Botanical gardens visitors centre was able to acquire a great-looking roof incorporated into the overall aesthetics of the building. More importantly, a watertight roof finish was achieved that protects the building and inhabitants from the elements.

Christchurch Botanical Gardens also achieved the ultimate in quality assurance with the acquisition of a Viking Full System Warranty. This allows for greater risk minimisation as the warranty covers both the product and installation under one process.