Alison Peach


More than just ways of ensuring privacy or providing shade, window coverings play a crucial role in ensuring that commercial buildings are sustainable. The most recent update to NCC 2019 reflects this fact. Taking two formally separate external components (exteriors walls and glazing) and redefining them as parts of the 'total facade', NCC 2019 Section J acknowledges the importance of window coverings in improving thermal performance. Aligned with the COAG National Energy Productivity Plan, it requires commercial buildings to reduce carbon emissions by 30%-40%, compared to NCC 2016.
Architects wishing to comply with (or exceed) this requirement need a good understanding of their window covering options. They need to be able to evaluate them, not only in terms of design and functionality, but also in terms of energy efficiency.

Learning Outcomes

At the end of this presentation you should be able to: • Identify the sections of the NCC that relate to the energy efficiency of commercial buildings. (AACA Competency; Design: Project Briefing 1.2, 1.4) • Outline the changes to NCC 2019 Section J and their relevance to the specification of window coverings for commercial buildings. (AACA Competency; Design: Pre Design 2.3) • Identify the various tools – including the NCC 2019 facade and other modelling software – that help maximise thermal efficiency. (AACA Competency; Design: Conceptual Design 3.3, 3.4) • Analyse a project brief and evaluate the relative effectiveness of various window covering products in reducing energy consumption for that specific application. (AACA Competency; Design: Schematic Design 4)