The use of cool roofs can be beneficial not only in warm climates but also in moderate to cool climates due to a substantial reduction in peak energy demand. This saving has been quantified and averages between 10 and 30% annually [2]. An additional benefit of cool roofs is the positive impact on roof durability associated with lower maintenance costs. The reduced temperature fluctuation and consequent minimised thermal stress can prolong the service life of roofs. The cool-roofs segment is expected to grow substantially - up to 5.4 billion USD in 2025, with a 7.0 % ...