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Thermosash Commercial Limited commenced operations in Auckland, New Zealand in June 1973 under the direction of the five founding Engineers who had, through their senior positions with Crittall Metal Windows, accumulated over 120 years of expertise in the Commercial Window Industry.

Under its founder, Mr Laurie Hayes and their modern integrated suites, Thermosash quickly developed a reputation for innovation and expertise.

By 1987 Thermosash was the largest commercial window and curtainwall designer, manufacturer and contracting company in New Zealand. The company, today, owns Window Engineering Consultants (a facade testing laboratory) and Woods Glass (NZ) Limited (a specialist commercial glazing operation).

The level of expertise required, due to the technology available today, has forced major investment in plant and technical/professional staff to keep abreast with this demand. This has helped to widen the gap between ourselves and our competitors.

41 Poland Rd, Wairau Valley
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Thermosash Commercial Ltd moved into Wellington in 1983 with the acquisition of Valley Aluminium Ltd in Petone and under the leadership of Brett Dawson. Brett is still with Thermosash (although now based in the north) and Wellington is now under the guidance of Dave Rooker who has over 30 years of experience in the curtainwall industry in UK and NZ.

With the huge growth in office accommodation (mostly for government departments) Thermosash has had to triple the size of its operation over the last 10 years. It has, however, completed several one off projects during this period namely the Museum of New Zealand (Te Papa), Westpac Stadium and the new extensions to the Wellington Airport.

17 Marine Parade, Petone, Lower Hutt
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In 2004 Thermosash moved into the South Island with the purchase of long established Custom Aluminium Ltd. The city based operation soon became too small and a new larger factory was built further out at Wigram. It soon became evident that some glazing experience was required so in 2008 the purchase of Bowden & Trent Glass was completed.

12 Braeburn Drive, Hornby
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