Compulsory insulation from 1 July 2019

Compulsory insulation from 1 July 2019. Will your house be able to comply?

Ceiling and underfloor insulation must be installed in places where it is reasonably practicable to install. But caution not to install electrically-conductive insulation (Electrically conductive insulation is banned in all residences including rental homes.) A landlord who fails to comply with the regulations may be liable for a penalty of up to $4,000

What are the insulation requirements?

Wall insulation is not compulsory.

If insulation was installed in your rental property before July 2016 an upgrade may not be necessary provided the ceiling and underfloor insulation:

  1. is in reasonable condition (e.g. no mould, dampness or gaps in the insulation), AND
  2. achieved at least the minimum R value

What are the R values?

R value is used to measure an insulation effectiveness.

The higher the R value, the more effective the insulation.

There are 2 standards for R-values. IF the insulation was installed prior to July 2016, then the R-value requirements are as follows:

  1. For timber framing, R-value of 1.9 is required for ceiling while for masonry framing, R-value of 1.5 is required for the ceiling.
  2. The underfloor requires an R-value of 0.9.

IF the insulation was installed after July 2016, then the R-value requirements are as follows:

If your property is in the South Island, the R-value needs to be at least 3.3 for the ceiling, and the R-value needs to be at least 1.3 for the underfloor.

If your property is in North Island (excluding Taupo region), the R-value needs to be at least 2.9 for the ceiling, and the R-value needs to be at least 1.3 for the underfloor.

 

The law does provide some exceptions:

  • Areas of homes with concrete slab on ground floors, or suspended floors that sit directly above the habitable spaces of neighbouring units are not required to be insulated.
  • Apartments are exempted if there is a level located above and below it.
  • Properties where, within 12 months from the start of a tenancy, the landlord intends to demolish the property or substantially rebuild parts of the property and has applied for any necessary resource
    consent or building consent.
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