All cities have buildings that are recognized as local landmarks. These structures have been around for decades and are common points of reference on city maps.

This eight level building, situated at the entry to the Viaduct Basin, is well known to many Aucklanders. Previously home to a number of organizations including an oil company and a radio station, the renamed Microsoft House is also highly visible from some of the city's major traffic corridors.

Taking into consideration the building's central location and proximity to the America's Cup Village, developer Ab Initio Investments decided to upgrade it. Having also secured a tenant to lease a significant part of the building, it was vital that the building program was completed on time.

It took approximately six months to refurbish the building - a relatively tight-time frame, says director Cam Hadlow. The other challenge was to give the building a new lease of life, which included replacing all the services.

"Another floor was added and the weather-proofing and maintenance factor of the building's exterior improved. The interior was also upgraded, more tenant car parking built and building access improved," he says.

Developing another level on the existing roof, adding balconies to the external corners and expressing the buildings strong structural grid all helped to create a modern office, says architect Ian Kohler of Ignite.

"The existing services were modified and upgraded and the ceilings on each level raised by 300mm. A Pacific-theme  foyer completes the buildings contemporary feel," he says.

"As a result of the extensive upgrading, the building has made a significant contribution to the architectural fabric of Auckland's Viaduct Basin."

The addition of another level while tenants were still in the building was a major challenge for main contractor Argon Construction. Cantilevered scaffolding was erected around the top of the building while the roof and plant were removed. Temporary air conditioning then had to be installed to keep tenants cool while work was in progress, says Argon's project manager Pat Carmine.

"One of the great things about this project was everyone's high morale on site. From the subcontractors to the developers and consultants, we all pulled together to get the job completed," he says.

Although the existing skin of the building was "past its use-by-date", the building's structure and base services were very good, says the architect.

"Case studies revealed that applying a light weight cladding to the existing external skin was the most economical way to refurbish the building," says Kohler.

As a result, Symonite was specified. This aluminum composite material is manufactured in flat sheet form, made into panels and custom shaped to fit by specialised installers.

Not only does it have an extremely high fire rating but it is also light and durable, says Wayne Sullivan of Symonite NZ.

"It is often used for refurbishment projects such as Microsoft House because it can be laid straight over the top of most materials," he says. Because all the fabrication is done in the factory, the panels can be installed on site quickly and easily. The envelope cladding was done in conjunction with Framerite Installation who supplied and installed the aluminum joinery.

As well as facades, Symonite can also be used on certain walls, awnings, signage, elevators, fascias and linings.

... - Trends Magazine, Vol 17 No. 3

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