B_0615_Newsfeed_roof

New Material Keeps Roofs Cool in Sunlight

June 26, 2015

Development could mitigate urban heat island effect.

While facility roofs typically heat up in the summer, a new material can keep roof surfaces cooler than the surrounding ambient air temperature, even under direct sunlight.

The design, created by researchers at the University of Technology Sydney, uses a stack of coated polymers and a silver film that yields solar reflectance and thermal emittance values near 100%. The material also absorbs just 3% of incident sunlight and keeps the roof’s surface over 50 degrees F. (or 11 degrees C.) colder than a typical commercial white roof. The new surface was created with commercially available plastic materials.

In addition to reducing the urban heat island effect, the study notes that the new technology could improve the efficiency of facility ventilation and air conditioning systems. Furthermore, the researchers tested the design in a variety of environments and found that even in the presence of dirt and grime the material maintains its thermal properties. The results were published in Advanced Science.

Voice your opinion!

To join the conversation, and become an exclusive member of Buildings, create an account today!

Sponsored Recommendations

Building Better Schools

Download this digital resource to better understand the challenges and opportunities in designing and operating educational facilities for safety, sustainability, and performance...

Tips to Keep Facility Management on Track

How do you plan to fill the knowledge gap as seasoned facility managers retire or leave for new opportunities? Learn about the latest strategies including FM tech innovations ...

The Beauty & Benefits of Biophilic Design in the Built Environment

Biophilic design is a hot trend in design, but what is it and how can building professionals incorporate these strategies for the benefits of occupants? This eHandbook offers ...

The Benefits of Migrating from Analog to DMR Two-Way Radios

Are you still using analog two-way radios? Download this white paper and discover the simple and cost-effective migration path to digital DMR radios that deliver improved audio...