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Rental property insulation: complying with the tenancy law changes

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.

To see what insulation you need to comply please see our handy guide below. To arrange to have insulation professionally installed in your property you can complete the form here or you will 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 Segment or Roll
R 4.1 Segment
** 60 – 100mm R 1.8 roll or R 2.2 Handy roll
*** 80 – 100mm R 1.8 roll or R 2.2 Handy roll
Underfloor Insulation
Thickness of existing insulation* R-Value (m2K/W)
0mm 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 Segment or Roll 
R 4.1 Segment 
R 5.2 Segment
** 60 – 100mm R 2.2 Handy roll
*** 80 – 100mm R 1.8 roll or R 2.2 Handy roll
Underfloor Insulation
Thickness of existing insulation* R-Value (m2K/W)
0mm 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

RTAMAp

Earthwool glasswool: Ceiling segments

Earthwool glasswool: Handy roll

Earthwool glasswool: Underfloor roll with wind wash barrier

Earthwool glasswool: Ceiling roll

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

DIY Underfloor