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This determination considers an authority's decision to grant a minor variation to a building consent regarding the substitution of external wall cladding products. The determination considers the criteria for granting a minor variation, whether the building consent is required to reflect the change in the external wall cladding, and if a new or amended certificate of design work is required

This determination discusses the approaches used in two different test methodologies for products that are used in contact with drinking-water. The determination considered whether there is evidence currently available that would indicate whether asphalt shingles used as part of a rainwater harvesting system will leach contaminants or particulates to an extent that would make the collected water unsuitable for human consumption (non-potable).