Condensation Management

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The NCC 2022 Condensation Management Provisions build on NCC 2019 Provisions to further enhance the Standard and further decrease health risks and building damage associated with high moisture levels in new homes.

Section 10.8.1 relates to vapour permeable building membranes and has not changed. There are 2 sections relating to ventilation in NCC 2022 – 10.8.2 (Exhaust Systems) and 10.8.3 (Ventilation of Roof Spaces) that are covered by our handbook.

Condensation Management provisions have become an additional challenge for builders to address – and a rethink of ventilation was required. Alpine Ventilation has developed comprehensive and innovative solutions to these new provisions that are: attractively designed, visually appealing, cost effective, BAL rated and easy to install. Click on the handbook on one of our product pages below.

Frequently Asked Questions

To protect both people and buildings from the problem off too much moisture

No. This is no longer an option under the updated NCC 2022 provisions

All locations have advantages and disadvantages. Most homes have multiple appliances requiring external ventilation and a combination will likely be required in most homes

  • Exhaust fans, rangehoods and vented clothes dryers are required to be vented externally to outside air
  • Exhaust fans must have a minimum flow rate requirement of up to 40L/s
  • Some exhaust fans must be connected to the light switch with a 10 minute run-on timer

  • Some homes in certain climate areas require additional venting at the eave
  • Homes requiring venting at the eave with a pitch of <10 degrees also require additional roof venting