The Benefits of Cool Roofing

Penrith Anglican College - cool roofing in COLORBOND steel Surfmist

Cool roofing materials can potentially provide a range of benefits to homeowners, asset owners and the community such as1:

  • improving building occupants’ thermal comfort
  • reducing air conditioning equipment capital costs due to reduced cooling capacity required
  • reducing ongoing air conditioning equipment operational costs through energy savings
  • extending roof system life by decreasing expansion and contraction
  • reducing air conditioning equipment maintenance costs and prolonging life due to reduced operational demands
  • keeping solar panels cooler and generating more efficiently
  • reducing energy demand, which can mean reduced greenhouse gas emissions from power generation
  • mitigating the effects of Urban Heat Islands (UHI's)

A sensible choice

According to research conducted by the High Performance Architecture team at the University of New South Wales, outdoor air temperature and cooling energy consumption can be significantly reduced by adopting cool roof technology.

“The need for cool roofs and other heat mitigation technologies should really be a priority. If not, the cost of climatic change in the next 10 to 15 years will be tremendous,” says Scientia Professor Mattheos (Mat) Santamouris, Anita Lawrence Chair in High Performance Architecture at the University of New South Wales (UNSW) School of Built Environment.

Professor Santamouris’ research confirms that there is vast data and evidence that cool roof technology works. “More than 250 cool roof technology projects around the world have succeeded in decreasing city air average temperatures by 1° to 1.5°C. The combination of mitigation technologies decreases the temperature up to 4°C,” he says.

1. Actual cool roofing performance will depend on a wide range of factors including roof colour, roof shape, level and location of insulation, type, location, shape, and function of the building.

Further information:



BlueScope - March 2023


Performing Arts Centre, Penrith Anglican College - LYSAGHT KLIP-LOK 700 HI-STRENGTH® roofing made from COLORBOND® steel Surfmist® in a Classic finish. Photographer: Brett Boardman

The quotations, information and opinions quoted in this article are provided by the featured reference source and reflect their views and experience and not necessarily the views of BlueScope Steel Limited.