A State-of-the-Art Review on Green Roof Implementation

Green roofs are known as an effective and sustainable design tool to mitigate urban heat island (UHI) effects. Generally, green roofs can be categorized as intensive and extensive roofs based on their purpose, design and characteristics. Green roofs built with several different layers and thicknesses depending on the roof type, the aim of the design and/or weather conditions. This paper will review the application of green roof in Malaysia that can reduce indoor heat problem and promotes the energy saving among the public. Challenge towards the application, obstacles of the green roof technology, and future recommendations are also discussed. There is numerous study on the impact of thermal heat, which show that the green roof helps in reducing indoor temperature. However, from past research, most of the studies focused on commercial building and office building. Therefore, the idea of extending the use of green roof to Rest and Relaxation (R&R) building in Malaysia is suggested as it is known to be a massive public area which is suitable to introduce the benefit of the green roof.