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The Roxburgh Hydro Dam lies across the Clutha River just North of the town of Roxburgh, opened for commission 1956 and currently supplies power to over 300,000 homes in the Otago region.

The dam itself and the operational buildings have been undergoing renovations for the past 10 years. The roof membrane of the three building had come to the end of their lifetime and were due to be replaced. The DuO Two Layer Membrane system was chosen as a replacement waterproofing membrane due to the robustness of the membrane, and its proven longevity in New Zealand conditions.

The Equus SORPEMA DuO Two Layer Roofing System is a two-layer torch applied membrane designed for use on exposed flat roofs, podium decks, balconies, and terraces. It offers a superior waterproofing system that is both UV resistant and flexible. The system complies with the New Zealand Building Code, and holds a current BRANZ appraisal.

The roof refurbishment had been in the design stages for several years, due to the complex nature of the site and the existing asbestos roofing material. The hydro station remained fully operational during the roofing installation, so health and safety was a key component during this installation.

Stage one of the roof refurbishment included the Administration building roof, and the Workshop building roof. This was completed in the DuO Two Layer Membrane System but Dunedin Roofing Systems in 2019.

Stage two of the roof refurbishment is expected to begin in 2022 and will see the asbestos roofing over the Generation Hall removed and covered with the DuO Two Layer Membrane system in stages. The installation process of this large roof will be thoroughly worked through with the multiple parties involved.

Equus Certified Applicator: Dunedin Roofing Systems
Architect: Opus International, Dunedin
Main Contractor: Naylor Love

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DuO Roofing Membrane, Roxburgh Dam
DuO Roofing Membrane, Roxburgh Dam
DuO Roofing Membrane, Roxburgh Dam
DuO Roofing Membrane, Roxburgh Dam
DuO Roofing Membrane installation, Roxburgh Dam
DuO Roofing Membrane installation, Roxburgh Dam
DuO Roofing Membrane installation, Roxburgh Dam
DuO Roofing Membrane installation, Roxburgh Dam

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Roxburgh Hydro Dam, Otago

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Roxburgh Hydro Dam, Otago

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Equus Industries Limited is a private limited liability Company (#120201) incorporated in Blenheim New Zealand in 1982.

The company commenced business, immediately after formation, as a manufacturer of specialist coating systems for commercial buildings. This remains the main thrust of the operation to this day, with additional high quality complementary products introduced extending the range to encompass a full range of coating and waterproofing materials for all types of construction.

In addition to supplying the New Zealand market, Equus started exporting specialist lines from late 1983 to Australia, the South Pacific and South East Asia. More recently developing strong links with distributors in both Australia and South East Asia.

Since formation, growth has been steady and continuous at an average 15% annual compound rate. The company now has a multi-million dollar turnover and is respected as a supplier of qualityprotection materials to the construction industry.