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Urban Heat Island Effect

There are many reasons for UHIs. When houses, shops, and industrial buildings are constructed close together, it can create a UHI. Building materials are usually very good at insulating, or holding in heat. This insulation makes the areas around buildings warmer – National Geographic

Nighttime temperatures in UHIs remain high. This is because buildings, sidewalks, and parking lots block heat coming from the ground from rising into the cold night sky. Because the heat is trapped on lower levels, the temperature is warmer – National Geographic

According to Architecture and Design, a whole range of design elements fall under the umbrella term of “cool roofs”. Essentially, a cool roof is one that reflects the suns heat and emits absorbed radiation back into the atmosphere at a higher rate than standard materials, literally staying cooler than a standard roof. This reduces the amount of heat transferred into the building below, keeping it at a more constant temperature.[1]

Cool roofs are reflective surfaces designed to reflect more solar radiation and absorb less heat than a standard roof – Victorian Energy Saver Program

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How Super Therm® can reduce CO2 emissions in your business and save money on energy.

When we compare in Google Maps, Darwin’s use of cool roofs with the City of Parramatta there is a noticeable difference in light coloured roofs. While Darwin as a community understands the net gain of utilising cool roofs. It is important to understand there are additional benefits by applying the correct solar heat block coating technology that gives sustainable and long term solar heat reflection. 

City of Parramatta (Google Maps)City of Darwin (Google Maps)

Urban Heat Island effect for the City of Parramatta, NSW

Urban Heat Island effect for the City of Darwin, NT

Hotter climates means more power and more discomfort

The Climate Council said “Climate change is making hot days and heatwaves more frequent and more severe. Since 1950 the annual number of record hot days across Australia has more than doubled and the mean temperature has increased by about 1°C from 1910.” (source).

Specifically, there has been an increase of 0.2 days/year since 1957 which means, on average, that there are almost 12 more days per year over 35°C.

Increasing extreme heat in Australia


  • Australia’s and the world’s global temperatures are rising
  • Australia has amongst the highest electricity prices globally
  • 25-35% of heat is transferred into a building is through the roof
  • Air conditioners have to work harder to keep the heat out and are costing Australia more than $1.3 billion over the summer months not to mention more CO2 emissions (source)
  • Dark roofs attract 50% more heat than light roofs
  • Bulk insulation absorbs heat load in the building and then releases it into the structure and; it can’t keep up with rising temperatures
  • NatHERS specification doesn’t allow for stopping heat
  • New options need to be considered as part of the overall strategy.

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At NEOtech Coatings Australia we understand the significant savings to be had through managing your energy absorption through the roof and walls. Our global studies over 30 years with our high performance coating manufacturer SPI Coatings are 100% confident Super Therm® delivers to solutions for less energy use, improved comfortable, heat island effect reduction and protect your roof!

How Super Therm® can reduce CO2 emissions in your business and save money on energy.

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