PUTRAJAYA, Malaysia, May 21, 2026 /PRNewswire/ -- i2Cool has completed the installation of its i2Film Electricity-free Cooling Film at Dorsett Putrajaya, helping the hotel address solar heat gain and improve guest comfort in its glass-fronted lake-view dining area.Located in Putrajaya, Malaysia, where the annual average temperature is around 28°C and hot, humid weather persists throughout the year, hotels built beside scenic waterfronts often face a dual challenge: maintaining open views while managing the heat load brought by strong sunlight.At Dorsett Putrajaya, Citra Rasa all-day dining restaurant is one of the hotel’s signature spaces. Overlooking Putrajaya Lake, the restaurant is known for its lake-view dining experience and local Malaysian flavours, including Nasi Lemak and Nasi Goreng. However, the large floor-to-ceiling glass façade also created a long-standing comfort issue, especially for tables close to the windows.According to feedback from hotel staff, window-side tables were often left empty during busy weekend brunch hours, as guests would ask whether those seats were too hot. The issue was not simply a matter of air-conditioning capacity. Under prolonged sunlight, the glass itself became a continuous heat source, transferring heat into the indoor space.The hotel’s engineering team had been aware of the issue for nearly two years. The key technical question was whether the heat-insulating film should be installed on the interior or exterior side of the glass. While interior application is shielded from weather, site evaluations revealed significant drawbacks, including structural instability of the existing trusses for worker access and the high risk of disrupting operations within the restaurant.After rounds of technical discussion and on-site comparison testing, i2Cool provided the hotel with a detailed technical assessment showing that exterior installation offered stronger advantages in heat dissipation and thermal insulation for this project. By installing the film on the exterior side, solar radiation could be reflected before acting on the glass, helping block heat at the source and maintain a lower glass substrate temperature.The hotel ultimately selected i2Film Electricity-free Cooling Film EFC-Blue 70e and adopted exterior-side installation. The project covered a total area of 421.6 square metres and was completed on 9 March 2026, ahead of Malaysia’s hottest period of the year.Following installation, on-site monitoring showed a significant improvement in thermal and lighting performance: