Orr’s Residence Richmond

Project Team

Architecture Continuum Architects

Passive House Design Oculus Architectural Engineering Ltd - oculusltd.co.nz

Builder Tasman Homes Nelson Ltd - tasmanhomes.nz
Certifier Sustainable Engineering Ltd - sustainableengineering.co.nz

This successfully certified Passive House project in the top of the South is a SIP construction on an insulated concrete slab with locally manufactured high-performance windows. Informed clients led the push for energy efficiency, in part thanks to encouragement from a son in the construction trade. It was the architect’s first Passive House project, with Passive House design delivered by a third party. The owners are delighted with the result and have generously welcomed visitors through the home on official and unofficial Passive House open days

Passive House Metrics

  • Heating Demand14.2 kWh/m2/year
  • Heating Load9.1W/m2
  • Frequency of Overheating1.7%
  • TFA201.74m2
  • Form Factor3.7
  • Air leakage @ 50Pa0.3 ACH/hour
  • PER demand39.2kWh/m2/year

Passive House Database - 6835

Construction Details Average Values

  • U-value External Walls 0.22 W/(m2K)(R4.5)
  • Formance 165mm SIP with 45mm service cavity
  • U-value Floor0.25 W/(m2K)(R4.0)
  • Concrete Slab with 150mm continuous insulation underneath
  • U-value Roof 0.12 W/(m2K)(R8.6)
  • Formance 265mm SIP
  • U-value Glass0.55 W/(m2K)(R1.8)
  • Thermadura - Silverstar EN2plus
  • U-Windows1.0 W/(m2K)(R1.0)
  • Thermadura Designline90
  • Ventilation Efficiency 82%
  • Zehnder  - ComfoAir350