Retrofit : Retrofit Volume 2 Issue 2 2013
22 • RETROFIT AUSTRALIA • VOLUME 2 NUMBER 2 2013 | Paints and Coatings Imagine being able to use paint to dramatically increase building energy efficiency, slashing power bills and cutting carbon emissions. Increasing awareness of the effects of climate change is causing consumers and specifiers to look for ways to minimise energy consumption, and cool coatings have the capacity to make a big impact in this regard. Low Carbon Australia, a company established by the federal government to provide advice and funding to business, government, and the wider community, estimates that retail buildings will save an average of $30,000 per year by installing heat-reflective coatings, with a payback period of an average of 5.3 years. Considering that these paints have a life expectancy of 25 years, it's a pretty cheap way to improve efficiency, with instant results. Cool coating technology has been developed by several manufacturers to reduce heat build-up in buildings and increase their energy efficiency. The coatings are usually applied to the exterior surfaces of a building, and can lower the interior temperature significantly. These paints and coatings are also increasingly being used to address the need to avoid 'urban heat build-up', which contributes to climate change and smog. Heat-reflective coatings The ability of white to reflect visible light extends into the infra-red, and, because of this, white surfaces remain relatively cool to touch, even in direct sunlight. The converse is true of black and dark colours, which absorb in this infra-red area, resulting in significant DANIEL WURM, NATIONAL INSTITUTE OF PAINTING AND DECORATING Heat-reflective coatings are one of the most significant and exciting developments in the painting industry. They are the painting industry's contribution to combating climate change. Reflecting on energy efficiency The exponential growth of urban areas has produced what science now calls 'urban heat islands', with the major contributing factor being heat-absorbing roofing, walls and pavements.
Retrofit Volume 2 Issue 1 2013
Volume 2 Issue 3 2013-2014