Insulation for rentals
Insulation for rentals

Changes to the Residential Tenancy Act (RTA) came into effect on 1st July 2016, which means rental properties must meet minimum levels of insulation in the ceiling and under floors.

RTA Map

For more information on the changes and how to get your property in compliance, please read through our FAQ’s or download our flyers.

 

Rental property insulation: complying with the tenancy law changes

To see what insulation you need to comply please see our handy guide below. To arrange to have insulation professionally installed in your property contact us or you can find a range of high quality, easy to install DIY Earthwool® glasswool insulation products at your local Bunnings.

Our recommendations for insulating with glasswool insulation:

North Island (Zone 1 & Zone 2)

Ceiling Insulation

Thickness of existing insulation*R-Value (m2K/W)
0 - 60mm  

R 2.9 roll 

R 3.2 batt or Roll ■■

R 4.1 batt ■■■

** 60 - 100mmR 1.8 roll or R 2.2 Handy roll
*** 80 - 100mmR 1.8 roll or R 2.2 Handy roll

Underfloor Insulation

Existing insulation*R-Value (m2K/W)
No insulation installed

R 1.8 Underfloor roll with wind-wash barrier

Good       Better      ■■ Best

* Based on glasswool

** 60-80mm for masonry wall construction.

*** Timber construction only. 80mm is compliant for masonry wall construction.

Insulation must be installed to meet standard NZS4246


South Island & Central Plateau (Zone 3)

Ceiling Insulation

Thickness of existing insulation*R-Value (m2K/W)
0 - 60mm  

R 3.6 batt or Roll 

R 4.1 batt ■■

R 5.2 batt ■■■

** 60 - 100mmR 2.2 Handy roll
*** 80 - 100mmR 1.8 roll or R 2.2 Handy roll

Underfloor Insulation

Existing insulation*R-Value (m2K/W)
No insulation installed

R 1.8 Underfloor roll with wind-wash barrier

Good      ■ Better      ■■ Best

* Based on glasswool

** 60-80mm for masonry wall construction.

*** Timber construction only. 80mm is compliant for masonry wall construction.

Insulation must be installed to meet standard NZS4246