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Project Feature: Z House

04 Oct 2023 by Equus Industries

On this residential site in Christchurch once stood a large, 2-storey, brick home. The 2011 Canterbury earthquake brought this multi-generational family home to the ground.

RTA Studio designed a new family home with resilience to future earthquakes and flooding, and elements of the original home at the heart of the design. The house was to be sustainable to operate and permanent so that its embodied carbon be mitigated over time.

The design required a long lasting highly functioning roof which not only protected the investment from the elements, and had a sleek design, it had to perform in a healthy highly insulated way.

RTA Studio and Equus worked closely on the roofing design for this home. They chose a DUOTHERM Warm Roof system, which combines a robust waterproofing membrane with thermal insulation and a vapor barrier. This provides the home with condensation control, consistent internal temperatures, and increased energy efficiency. Project specific condensation risk analyses were calculated for this roof to ensure it provided adequate thermal resistance to contribute to the sustainable operation of the building. Thermal resistance is essential for creating a healthy, dry home and reducing energy needs for heating and cooling a large structure over its lifetime.

Project Feature: Z House

Aesthetically, RTA Studio and the client wanted something that looked smart and would be low to zero maintenance. The striking black, glimmering AGR cap sheet (of the DUO two-layer roof and deck membrane) was selected for its aesthetics, giving the roof a ‘sparkling’ appearance in the sunlight. The project design had a lot of detail; Solar battens, terminations, and circular holes in the roof for plantation to grow through. Our consultant team worked closely with the designers to ensure these details were designed as sleek as possible.

Project Feature: Z House

Quality inspections were regularly carried out by both Equus Consultants and designers from RTA Studio during the installation, with Canterbury Waterproofing Ltd, a long-time and experienced Equus Certified Applicator, responsible for installing the DUOTHERM roof.

Equus Industries

New Zealand

Equus Industries provides technical waterproofing solutions for Architects, Engineers, Property Managers, and Contractors in the building industry. One system does not fit all. Equus can provide complete solutions, systems, specifications, technical support and warranties.Equus commenced business as a manufacturer of specialist coating systems for commercial buildings in 1982. This remains the main thrust of the operation with additional high quality complementary products introduced to encompass a full range of coating and waterproofing materials for all types of construction. Our range now includes solutions for roofing, tanking, flooring, carparks, coatings, decks & balconies, and concrete repair.Equus Industries markets a wide range of high build waterproof finishes, textured coatings, and protective coatings under the brand names Chevaline, Traxx, Protexx, Thermexx and Equus. Our expertise is particularly in the areas of high build acrylic coatings and membranes, waterborne epoxies and high solids one – and two component urethane coatings.Our prime objective is to supply all finishes and waterproofing materials required to protect buildings from sub-basement to roof levels for which, we have secured distribution arrangements for products from leading manufacturers around the world.Distribution of Equus products is generally to Certified Applicators who are familiar with and trained in the use of the Equus range of products. Materials are then covered under a Warranty system which is operated in conjunction with the Certified Applicator.All products are manufactured under strict Quality Assurance standards monitored and controlled by our in-house laboratory. The Company has a TQM philosophy and is at present working within the parameters of an ISO9002 framework.

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