Is it okay to have foil insulation in a rental?

Question

Accepted Answer

Insulation is rated by its resistance to heat flow. This is measured by R-value; the higher the R-value, the better the insulation. Any foil type of insulation is banned. Whoever installs it must do so in accordance with NZS 4246:2016. The guide can be downloaded at: https://www.tenancy.govt.nz/assets/Uploads/Tenancy/NZS-42462016-Energy-efficiency-Installing-bulk-thermal-insulation-in-residential-buildings.pdf
If the insulation was installed before July 2016 the minimum R-values for timber framed homes is R 1.9 for the ceiling and R 0.9 for the underfloor. The minimum R-values for masonry homes is R 1.5 for the ceiling and R 0.9 for the underfloor.
If your insulation was installed after July 2016 you can see what R-value your home requires at: https://www.tenancy.govt.nz/maintenance-and-inspections/insulation/compulsory-insulation/#id_779611-building-design-exceptions

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