Whittle House Matakohe

   House Profile

Project Team

Architecture Sang Architects - sangarchitects.com
Passive House Design Sustainable Architecture Ltd - sustainablearchitecture.co.nz
Builder Bruyere Limited - bruyerepassivehomes.nz
Certifier Sustainable Engineering Ltd – sustainableengineering.co.nz

Passive House Metrics

  • Heating Demand12.3 kWh/m2/year
  • Heating Load9.5 W/m2 
  • TFA151.9m2
  • Form Factor3.5
  • Air leakage @ 50Pa0.6 ACH/hour
  • PER demand52.7kWh/m2/year

Passive House Database -TBA

Construction Details Average Values

  • U-value External Walls0.36 W/(m2K)(R2.77)
  • 90 and 140mm timber framed walls with R2.5/R3.2 Mammoth batts, Intello air control layer, 45mm service cavity with R1.3 Mammoth batts, plasterboard.
  • U-value Floor0.21W/(m2K)(R4.72)
  • Suspended timber floor with two layers R2.9 Mammoth batts, ply windwash protection.
  • U-value Roof 0.18W/(m2K)(R5.44)
  • Skillion & timber truss roofs with two layers R2.9 Mammoth batts, Intello air control layer uninsulated ceiling service cavity, plasterboard.
  • U-value Glass1.12 W/(m2K)(R0.89)
  • Eco Windows double - PLANICLEAR 4/16/4Ar 90
  • U-Windows1.4 W/(m2K)(R0.7)
  • Eco windows PVC83
  • Ventilation Efficiency90%
  • Wolf CWL-2-325