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Kiwi Newton

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Design-build is a modern project delivery method where a single entity—the design-builder—is responsible for both the design and construction phases of a project.

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Net-Zero Building. Kiwi Precast System. Solar panels.
Energy Efficiency

Solar & Geothermal Strategies for Net-Zero Buildings

Our buildings achieve net-zero status by integrating solar arrays and geothermal systems, leveraging their highly efficient building envelopes and substantial thermal mass. Exterior insulation and airtight design reduce heating and cooling needs, while solar panels meet electricity demands with renewable energy.

Geothermal systems provide efficient heating and cooling by using the earth’s stable temperatures. Combined with hydronic heating and cooling elements in the concrete thermal mass, these systems maintain consistent indoor climates with minimal energy use. This integration ensures our buildings exceed energy efficiency standards, offering sustainable, cost-effective, and environmentally friendly living spaces.

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Net-Zero

Limiting Thermal Breaks for Efficiency

With high insulating value, special care is taken to limit thermal bridging. Thermal bridging occurs when an exterior element is directly connected to an interior element without any thermal breaks. A prime example is when a balcony is simply a cantilevered extension of the floor slab. With this building detail, the cold concrete balcony is a bridge for your heating energy to leave your building.

Kiwi Newton employs thermally broken balconies and facade mounting to eliminate thermal bridges. Instead of a cantilevered balcony, a precast slab is supported on the exterior of the building via columns or ‘wing walls,’ which are thermally broken and structurally separate from the main building walls.

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Energy Efficiency

Using Thermal Activation for Energy Efficiency

The Kiwi Precast System is built for energy efficiency, with insulation placed on the exterior of the precast concrete walls. This design allows the concrete to act as a thermal reservoir, using its mass to regulate indoor temperatures.

The concrete absorbs heat during the day and releases it at night, helping maintain stable temperatures inside the building regardless of outdoor conditions. Embedded water lines further enhance this process, circulating heated or cooled water through the structure to provide consistent temperature control. This approach reduces energy consumption and operational costs while creating a comfortable, eco-friendly environment.

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Net-Zero

Prefabrication for Passive House

Kiwi Newton specializes in constructing buildings that meet the principles of Passive House design:

Superinsulated envelopes to reduce heat loss
Airtight construction to prevent energy leaks
High-performance glazing for thermal efficiency
Thermal-bridge-free detailing to stop energy loss
Heat recovery ventilation for fresh air without heat loss

The international Passive House (Passivhaus) standard requires strict energy performance metrics:

Space heat demand: max 15 kWh/m² annually or 10 W/m² heating load
Airtightness: pressurization test result of 0.6 ACH at 50 Pa
Primary Energy Demand: max 120 kWh/m² annually

These demanding standards ensure minimal heating and cooling energy usage.

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