Installing insulation in residential buildings

The New Zealand Standard for installing insulation in residential buildings has gone through a major revision.

Installing insulation in residential buildings

The New Zealand Standard for installing insulation in residential buildings has gone through a major revision.

The new Standard is NZS 4246:2016 Energy efficiency – Installing bulk thermal insulation in residential buildings. The Standard provides guidance for the correct installation of insulation products by any installer, including DIY installers, in order to achieve high-quality and safe insulation installations in buildings.

How has the Standard changed?

The Standard has been updated, extended and now provides additional guidance on installing insulation:

☐ In steel-framed installations

☐ Under concrete slabs on the ground 

☐ Around downlights, particularly where there have been significant technology advances.

Additional diagrams, photos and figures have been included to provide easy-to-understand, step-by-step guidelines for installing insulation in new homes, and for the retrofit of insulation in existing residential buildings.

Ban on foil insulation (retrofit or replacement)

Foil insulation continues to be excluded from the scope of the revised Standard. A ban on retrofitting or replacing foil insulation in residential properties came into force on 1 July 2016 to reduce safety risks associated with installing this product.

Meeting everyone’s needs

Installing insulation correctly means it performs effectively and doesn’t compromise the durability of your building, or put the health and safety of installers and occupants at serious risk.

In addition, the Standard is cited in the Residential Tenancies (Smoke Alarms and Insulation) Regulations 2016. If you have rental properties it’s important you read and comply with the Standard when installing insulation in those properties.

Where to find the revised Standard
Remember, familiarizing yourself with this Standard could be counted as skills maintenance where it is relevant in an elective sense. So go ahead and have a read:

https://www.tenancy.govt.nz/maintenance-andinspections/insulation/