Note. The updated note NCC 2019 Section J and commercial building facade design is now available. Changes introduced in NCC 2019 are subject to a one-year transition period from 1 May 2019, during which time, either the NCC 2016 or NCC 2019 requirements may be used.
To address the growing contribution to Australia’s greenhouse gas emissions by the commercial building sector, Section J of the National Construction Code (NCC) Volume One codifies minimum glazing thermal performance measures for both facade vision glazing and roof lights. In 2016, the NCC moved to a three year cycle, with the next revision due in May 2019.
The difficulty with Section J is that it fails to explain succinctly to a designer what is meant by a compliant design or what one might look like. This paper attempts to address this failure by presenting a range of strategies and design charts for different climate zones to enable commercial building designers to quickly design innovative, high-performance, NCC-compliant facade concepts.