Subfloor insulation in rentals a costly mistake

Jan 22, 2019 | News

Insulation features in “healthy homes” regulations that Housing and Urban Development Minister Phil Twyford is expected to impose next month.

Under existing law, New Zealand’s 262,000 owners of rental property are required to install both ceiling and underfloor insulation by July 1 or face a penalty of $4000 payable to any person who reports non-compliance.[1],

The cost of installing R 1.3 subfloor insulation as required by the Residential Tenancies (Smoke Alarms and Insulation) Regulations 2016 for most of the North Island was $881.64 for a 77 square metre dwelling.[2]

The requirement for subfloor insulation is ridiculous because at best it reduces heat loss by only 9 percent which means the cost of installing it substantially outweighs any benefits, [3] Mr Butler said.

Ceiling insulation reduces heat loss by 35 percent but the difference between ceiling and subfloor insulation was not considered in the cost benefit analysis done by the New Zealand Institute of Economic Research for the Government, he said.

When asked why, an NZIER spokesman said that the Ministry of Business Innovation and Employment asked them to leave it out of the analysis, Mr Butler said.[4]

Requiring subfloor insulation in rental properties was a policy blunder perpetrated by the former National-led Government that should be remedied, he said.

The Minister has rectified another costly failure by the former Government by amending a methamphetamine contamination threshold that was 24 times lower than the lowest level that anyone could plausibly have a health risk, Mr Butler said.

Mr Twyford could include in the “healthy homes” standards a similar correction by dropping the requirement for subfloor insulation, he said.[5]

Owners who have installed subfloor insulation under threat based on faulty advice require compensation, Mr Butler said.

A repeal of the subfloor insulation regulation could save the Government millions of dollars in work not required for any state houses that may not have subfloor insulation, he said.

Stop the War on Tenancies is a group that since last October has been highlighting the evidence that successive governments have ignored while creating rental property policy.

________________________________________

[1] Schedule 1A Amounts for unlawful acts, Residential Tenancies Act 1986, at http://www.legislation.govt.nz/act/public/1986/0120/latest/whole.html?search=qs_act%40bill%40regulation%40deemedreg_residential+tenancies+act_resel_25_h&p=1#DLM3285790

[2] Qualifying ceiling insulation. See http://www.legislation.govt.nz/regulation/public/2016/0128/16.0/DLM6856254.html

[3] How Insulation Works, Level. http://www.level.org.nz/passive-design/insulation/how-insulation-works/

[4] The proposed Healthy Homes Regulations: An assessment, Ian Harrison, p17. http://www.tailrisk.co.nz/documentlist

[5] Meth, evidence, govt failure. https://www.nzcpr.com/meth-evidence-govt-failure/

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