Sauvarins First Glass Services

3/31 Princes Street, Onehunga, Auckland 1061
PO Box 84087, Westgate, Auckland 0657
Ph: 09 846 2154


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Sauvarins Case Studies

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Auckland Art Gallery Heat & Noise Reduction

The main Gallery building was originally designed by Melbourne architects Grainger & D'Ebro to house not only the art gallery but also the City Council offices, lecture theatre and public library. It is constructed of brick and plaster in an early French Renaissance style and was completed in 1887, with an extension built in 1916. It is three storeys high, with an attic in the steep pitched roofs, and a six storey clock tower. The building was registered as a Category I heritage item by the New Zealand Historic Places Trust on 24 November 1983.

The new building eventually proved too small to house all the Council departments and overflow space in the Customs House in Customs Street was found to be necessary. Following the completion of the Auckland Town Hall in 1911, all Council departments left the Gallery building allowing expansion of Gallery facilities, including extra workshop space for art classes.

The Details

Sauvarins First Glass Services Limited was approached by Regional Facilities Auckland to provide a solution to address issues that they had in the main office area.

Located in the old part of the Gallery building, the key problems were:

  • Heat – Even with the air conditioning unit operating at maximum capacity, it was still too hot in the offices for seven months of the year
  • Noise – Being located on a busy road with inner-city buses going past every 5 to 7 minutes cause the windows to rattle nonstop
  • Draughts – Thermal blinds moving on windy days

The Solution

Knowing that the Auckland City Art Gallery was a Category 1 Listed Historic place meant we needed to meet special criteria for work to be done.

Step 1:

Non-invasive testing - we asked the office staff questions as per the Thermawood Check Sheet.

Observed for visible signs as per the Thermawood Check Sheet.

Assess common areas as per the Thermawood Check Sheet.

Cracking in cladding and/or staining and discoloration are often reliable signs of moisture ingress and subsequent timber decay

Step 2:

Set up equipment to record humidity, noise and temperature

Observing timber hardness when visually inspected (specialised tooling) as per the Thermawood Check Sheet.

Probing timber with specialised tooling as per the Thermawood Check Sheet.

We also used several other methods that would indicate decay.

Step 3:

Contact the Heritage New Zealand office in Auckland and set up a meeting with one of their Senior Architects.

Go over the process of the Thermawood System and how it works.

Emphasis was placed on the long term sustainability of the Thermawood system: the Drainage Adapter is made from recycled milk bottles, the timber products used are sourced from FSC and PEFC certified companies and the system complies with NZS 4211: 2008 Extra High Wind Zone.

Step 4:

Contact the Heritage arm of Auckland City Council and demonstrate what we would do and how the Thermawood System could work for them.

Step 5:

The double glazed unit (dgu) that Sauvarins came up with is a dgu that solved the Art Gallery’s key issues and ensures heat reduction, noise reduction, comfort for the staff and an R (Total) (M2o C/W) of .58 for the window.

The old glass that was removed was 4mm and 5mm Clear float. Sauvarins Glass has kept all of the old glass so it can be reglazed into other Council Heritage Building as and when required.



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