Parti Walls

Created by Vicki Marshall, Modified on Mon, 7 Nov, 2022 at 12:34 PM by Vicki Marshall


Region: All States


Assessor Question


Can you please clarify when modelling if a "full" parti wall should be used (per dwelling) or "half" of the parti wall (per dwelling) 


TechLink Response


  • The NatHERS model requires the full assembly details of any construction surrounding the dwelling being rated.
  • The thermal mass of an assembly as well as thermal heat flow resistance are critical.
  • Selection of Neighbour for elements shared with an adjoining dwellings just sets the thermostat for the ambient conditions of the volume adjoining the subject dwelling.
  • The Neighbour designation means that heat flow is effectively zero because the temperature on either side of the element is nominally the same.

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