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The determination considers whether zero pitch protected liquid-applied membrane roofs will comply in regards to weathertightness and durability if constructed as specified by the manufacturer. The determination provides analysis of the evidence in support of the membrane in this use, sets out the design parameters for buildings for which the waterproof membrane would be used, and discusses drainage, resistance to water, and whether there is reliance on other components of the roofing system.

This determination considers the authority's refusal to grant an amendment to a building consent for remediation of tiled decks. The matter turns on whether the acoustic mat as part of the proposed tiling system will comply with Clauses G6 and B2.

This determination covered technical issues about a proprietary system provider’s methodologies and technologies relating to liquid and foaming injection timber treatment systems used to slow the rate of decay. Discussed whether timber treatment process is building work, and whether targeted treatment can be exempt from building consent under Schedule 1 of the Act as maintenance. Discussed impacts on bracing capacity, air volatility, and the use of drying skirts. Also mentioned the provision of new plans as opposed to copied plans.

Explanatory note

This determination contained an error when it was issued on 26 June 2019. At Paragraph 5.6.6 it read, “I note here the torch-on-membrane, which the authority issued a building consent for (refer paragraph 4.5.1), is permitted within the Acceptable Solution as a capping material to parapets".

To provide clarity paragraph 5.6.6 is now to be read as follows, “I note here metal, butyl or EPDM membranes are the materials specified in the Acceptable Solution as capping materials to parapets. The authority issued a building consent (refer paragraph 3.7) for the torch on membrane, which established that the authority was satisfied with the compliance of that material as a weathertightness system."

This determination considers the compliance of parapet and...