Beware of Dodgy Underfloor Insulation Advice

August 31, 2018 at 12:42 PM

EXPOL is warning homeowners, landlords and property managers to be wary of unethical insulation providers, following reports that some property owners are being incorrectly advised that their underfloor insulation is not up to standard.

“We have heard accounts about insulation installers wrongly advising clients that their existing EXPOL UnderFloor insulation does not meet Government standards for insulation in rental properties. This is categorically not the case. EXPOL products don’t just meet the required specification for insulation – they exceed it,” says Mark Mischefski, General Manager for EXPOL New Zealand. 

“We are very concerned about these reports, because it seems that consumers are being told that they need to pull out their existing underfloor insulation and replace it in order to meet the standard. In actual fact, any EXPOL UnderFloor insulation that is already in place will perform perfectly. There is absolutely no need for it to be replaced,” says Mischefski.

EXPOL UnderFloor insulation products are independently certified by BRANZ – the organisation which is responsible for testing and approving performance of building products in New Zealand. You can view EXPOL’s BRANZ certification here.

For underfloor insulation products to provide adequate insulation to a rental property, it needs to have a minimum insulation value of R1.3. EXPOL insulation exceeds this with a value of R1.4 and EXPOL Black, used in extreme environments, even has an insulation value of R1.8. 

“EXPOL has been making premium insulation products for more than 20 years, and we have invested significant time and effort in testing our products to ensure that they perform in New Zealand conditions. We are so confident in the quality of our EXPOL UnderFloor insulation products that we guarantee their performance for 50 years,” says Mischefski. 

Any property owner that has been affected by incorrect advice about their underfloor insulation is encouraged to contact Consumer Protection New Zealand to report their experience. Visit Consumer Protection website.

For further information about EXPOL UnderFloor visit


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