Save

Airtightness of apartments - Build 180(2020)

Abbreviation
Airtightness of apartments
Valid from
01/10/2020

Information provider
BRANZ Limited
Author
Standards Australia
Information type
BUILD article
Format
Website, PDF

Description

Recent BRANZ research into the airtightness of apartment buildings has prompted a shift in thinking around airtightness and ventilation. BRANZ now recommends that residential buildings are mechanically ventilated and are built to an airtightness target.

The airtightness of a building is a measure of how much air flows between indoors and outdoors through the structure itself – in other words, how big the holes are in the structure.

Airtightness is a key aspect of a building’s performance, affecting the energy efficiency, thermal comfort and indoor air quality. However, airtightness is only mentioned indirectly in the New Zealand Building Code, and there is no requirement to meet a particular target level of airtightness.

Scope

This article includes:

  • BRANZ tested a range of apartments
    • Airtightness similar to new standalone houses
    • Airtightness ranged from 1.9–12.6 ach
  • Many homes underventilated
  • Aim for 3 ach @ 50 Pa
  • Move to mechanical ventilation
  • Only small improvement needed
  • Resources to help achieve airtightness
  • Dealing with air leakage
  • A different approach
For assistance with locating previous versions, please contact the information provider.
View on Information Provider website Download this resource (PDF, 8.2MB)
For assistance with locating previous versions, please contact the information provider.
This resource is not cited by any other resources.

Airtightness of apartments - Build 180(2020)

This document is not CITED BY any other resources:

Airtightness of apartments - Build 180(2020)

Description

Recent BRANZ research into the airtightness of apartment buildings has prompted a shift in thinking around airtightness and ventilation. BRANZ now recommends that residential buildings are mechanically ventilated and are built to an airtightness target.

The airtightness of a building is a measure of how much air flows between indoors and outdoors through the structure itself – in other words, how big the holes are in the structure.

Airtightness is a key aspect of a building’s performance, affecting the energy efficiency, thermal comfort and indoor air quality. However, airtightness is only mentioned indirectly in the New Zealand Building Code, and there is no requirement to meet a particular target level of airtightness.

View on Information Provider website Download this resource (PDF, 8.2MB)
Airtightness of apartments - Build 180(2020)
Description

Recent BRANZ research into the airtightness of apartment buildings has prompted a shift in thinking around airtightness and ventilation. BRANZ now recommends that residential buildings are mechanically ventilated and are built to an airtightness target.

The airtightness of a building is a measure of how much air flows between indoors and outdoors through the structure itself – in other words, how big the holes are in the structure.

Airtightness is a key aspect of a building’s performance, affecting the energy efficiency, thermal comfort and indoor air quality. However, airtightness is only mentioned indirectly in the New Zealand Building Code, and there is no requirement to meet a particular target level of airtightness.

View on Information Provider website Download this resource (PDF, 8.2MB)
This resource does not cite any other resources.

Airtightness of apartments - Build 180(2020)

This resource does not CITE any other resources.
Save
Feedback