Green roofs for energy efficiency – a simulation study in Australian climates

Kangan Automotive Centre of ExcellenceThis note was reviewed and approved for currency in August 2018. 

This paper describes how green roofs influence the energy performance of a hypothetical commercial office building in each of the Australian Building Code Board’s eight climate zones of Australia. It presents a dynamic thermal simulation of the energy performance of green roofs, without insulation, as compared with conventional compliant roofs – both concrete and metal deck. A life cycle cost benefit analysis is provided for the modelled roof types.

Simulations were conducted for a single storey office building with a concrete roof, a metal deck roof and for both types with the addition of extensive (ie shallow profile, light weight) green roof coverage.

note summary
  1. Introduction
  2. Green roof characteristics
  3. Analysis
  4. Financial analysis
  5. Limitations
  6. Conclusion