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2016/016: Regarding the code-compliance of a zero pitch roof system

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Document

Determination 2016/016[PDF 359 KB]

 

About this determination

Date issued
29 April 2016
Primary Building Code clause:
E2 - External Moisture
Also related to:
B2 - Durability
Primary topic:
Weathertightness

Summary

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.

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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: