In tropical countries rooftop greenery is more sympathetic to the prevailing climate and provides comfortable indoor
environment. This paper analyses the above hypothesis on a 10 storied residential apartments in Universiti Teknologi
Malaysia (UTM). The analysis of actual performance of the rooftop greenery can provide the information on effectiveness of
its application on contemporary houses for tropical climate in Malaysia. Empirical studies have been performed an internal
and external roof surface, where temperature and air temperature were measured for a period of three days in two phases. The
first phase of measurement was carried out when the rooftop was empty. After the rooftop greenery was built then the
second phase of measurement was conducted. Expected findings of the research are that the green rooftop will tend to
experience lower surface temperature than the original exposed roof surface. So this research work will provide an
introduction or preliminary guide line for thermally responsive architecture on the basis of thermal performance of the
rooftop greenery system. Temperature is the main criteria of human comfort. To provide an indoor comfortable environment
through the greening of the rooftop of the building is more appropriate in the tropical climate of Malaysia.