Previous determinations

Determinations are made by MBIE on matters of doubt or dispute to do with building work. Rulings are legally binding, but only in relation to each case.

Previous determinations may provide some useful guidance for those faced with similar problems, but note that individual circumstances may vary.

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2018/060: Refusal to grant building consent for retrofitting polyisocyanurate insulation in a house

This determination considers the code-compliance of retrofitted rigid foam insulation board to insulate the walls of an existing house.  The determination considers whether the proposed insulation board will satisfy certain clauses of the Building Code to the extent required by the Building Act.

About this document

This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: