Past years have witnessed the popularity of traditional Malay house as a common housing type in Malaysia. However, double-storey house has become one of the common types of low-rise housing in Malaysia. Several passive cooling strategies have been adopted to cope with the hot-humid climate of Malaysia. In this study, the thermal comfort of a double-storey house was examined when different passive cooling strategies that were adopted from traditional Malay houses were applied using IES-VE 2019 building simulation software. The simulation was conducted for various design strategies such as changing concrete roof tiles to clay roof tiles, adding two small openings to the attic, removing the ceiling between the upper floor and the attic, and extending the overhang by 50% of its length for all the four facades. All these strategies were tested and compared between full-day natural ventilation and without any ventilation. The thermal comfort of these strategies was graphically defined based on the operative temperature. These analyses revealed that protecting the building envelope by extending the overhang by 50% of its length for all the four facades could ensure the best thermal comfort is achieved compared to other selected strategies. Recommendations for further studies are also outlined in this paper.

• Al-Obaidi, M. A. A. H., & Woods, P. (2006). Investigations on effect of the orientation on thermal comfort in terraced housing in Malaysia. International Journal of Low-carbon Technologies, 1(2), 167-176. https://doi.org/10.1093/ijlct/1.2.167

• ASHRAE. (1992). Thermal environmental conditions for human occupancy. American Society of Heating, Refrigerationg and Airconditioning Engineers.

• ASHRAE. (2010). Standard 55-2010: Thermal environmental conditions for human occupancy. 2010. American Society of Heating, Refridgerating and Airconditioning Engineers.

• Brager, G. S., & de Dear, R. (2000). A standard for natural ventilation. American Society of Heating, Refridgerating and Airconditioning Engineers.

• Ibrahim, S., Baharun, A., & Nawi, M. M. (2014). Analytical studies on levels of thermal comfort in typical low-income houses design. Journal of Civil Engineering, Science and Technology, 5(1), 28-33. https://doi.org/10.33736/jcest.130.2014

• Lim, J. Y. (1987). The Malay house: Rediscovering Malaysia’s indigenous shelter system. Institut Masyarakat.

• MMD. (2017). General climate of Malaysia. Malaysia Meteorological Department. Retrieved August 20, 2017, from http://www.met.gov.my/en/web/metmalaysia/home

• Mohamed, M. F. (2018a, November 13). 21 Green Approaches in Traditional Malay House [Paper presenttaion]. Universiti Kebangsaan Malaysia Integrated International Conference (UKM-IIC) 2018. Putrajaya, Malaysia.

• Mohamed, M. F. (2018b, January 17-18). Learning Traditional Malay House Through Working Drawing Course [Poster presentation]. K-Inovasi 2018. Selangor, Malaysia.

• Nasir, A. H. (1985). Pengenalan rumah tradisional Melayu semenanjung Malaysia [Introduction to traditional malay houses in Peninsular Malaysia]. Loyal Press.

• Nasir, A. H., & Teh, W. H. W. (2011). The traditional Malay house. Institut Terjemahan Negara Malaysia.

• Nasir, A. H., & Teh, W. H. W. (1997). Warisan seni bina Melayu [Malay architecture heritage]. Penerbit Universiti Kebangsaan Malaysia.

• Nugroho, A. M., Ahmad, M. H., & Ossen, D. R. (2007). A preliminary study of thermal comfort in Malaysia’s single storey terraced houses. Journal of Asian Architecture and Building Engineering, 6(1), 175-182. https://doi.org/10.3130/jaabe.6.175

• Oleiwi, M. Q., Mohamed, M. F., Sulaiman, M. K. A. M., Che-Ani, A. I., & Raman, S. N. (2019). Thermal environment accuracy investigation of integrated environmental solutions-virtual environment (IES-VE) software for double-story house simulation in Malaysia. Journal of Engineering and Applied Sciences, 14(11), 3659-3665. https://doi.org/10.36478/jeasci.2019.3659.3665

• Sadafi, N., Salleh, E., Haw, L. C., & Jaafar, M. F. Z. (2012). Potential design parameters for enhancing thermal comfort in tropical Terrace House: A case study in Kuala Lumpur. ALAM CIPTA Journal, 3(1), 15-24.

• Sulaiman, M. K. A. M. (2017). Cooling effect performance of indirect green facade on building in tropical climate of Malaysia [Doctor of Philosophy thesis]. Universiti kebangsaan malaysia, Malaysia.

• Surat, M. (2016, December 24-25). Peranan budaya bangsa dalam pembangunan senibina Malaysia: Garapan dari teras senibina warisan Melayu [The role of nation culture in Malaysia Architecture Development: A study from the thrusts of Malay heritage architecture]. In Philosophy of Science and Technology Seminar II. Anwar Ibrahim Research Institute, Kajang, Malaysia.

• Surat, M. (2018, November 13-14). Cadangan taksonomi pengukuran taraf senibina identiti kebangsaan Malaysia [Proposed rating measurement taxonomy for Malaysian national architectural identity]. In Proceedings of Conference on Regional Architecture and Built Environment 2018 (SeniBINA2018), ‘Theme: National Architectural Identity’. Palm Garden Hotel Putrajaya, Malaysia.

• Surat, M., Baharum, M., Usman, I., Musa, A., & Tawil, N. (2012). Mengenalpasti tahap kesejahteraan seni bina warisan Melayu melalui konsep Islam [Identifying the level of wellness in Malay heritage architecture through the concept of Islam]. Journal of Design+ Built, 5(1), 1-11.

• Tinker, J., Ibrahim, S., & Ghisi, E. J. A. B. (2004). An evaluation of thermal comfort in typical modern low-income housing in Malaysia. Buildings, 9, 1-5.

• Yau, Y., & Hasbi, S. J. E. P. (2017). A comprehensive case study of climate change impacts on the cooling load in an air-conditioned office building in Malaysia. Energy Procedia, 143, 295-300. https://doi.org/10.1016/j.egypro.2017.12.687

• Yusoff, W. F. M., & Mohamed, M. F. (2017). Building energy efficiency in hot and humid climate. In Encyclopedia of Sustainable Technologies (pp. 159-168). Elsevier.