Iranian Sustainable Building Scientific Association International Journal of Urban Management and Energy Sustainability 2538-1628 7 1 2026 05 01 The Thermal Comfort of Residents with an Emphasis on the Quality of Materials in the Cold and Mountainous Climate 182 200 737273 10.22034/ijumes.2026.2062831.1338 EN Zahra Moradi Department of Architecture, Faculty of Art and Architecture, Islamic Azad University, Hamedan, Iran 0009-0001-9972-6949 Tahoora Moradi Department of Architecture, Arts and Architecture Faculty, Kunming University of Science and Technology (KUST), Kunming, Yunnan, China 0009-0009-0711-3378 Liangbin Tan Department of Architecture and Urban Planning, Faculty of Architecture, Kunming University of Science and Technology (KUST), Kunming, Yunnan, China 0009-0001-8442-5748 Journal Article 2025 06 05 Thermal comfort is a multidisciplinary concept at the intersection of physiology, psychology, architecture, and environmental science, referring to the state in which a person feels satisfied with the surrounding thermal environment. The aim of this study is to investigate and explain the proposed indexes for evaluating the thermal comfort of residents in cold and mountainous climates, with an emphasis on building materials in the city of Kermanshah in western Iran. The method of collecting information is documentary and library, and a questionnaire and interview have been used to conduct the research. First, using the content analysis method and inductive reasoning in developing the initial concepts and reviewing the research background, the initial theoretical framework of the research is refined, and then using the fuzzy Delphi method in the participatory decision-making approach, it is questioned and evaluated in 4 rounds using an elite panel of 15 people in the research field of expertise finally using the results, the final framework of the indexes is presented. Findings show Environmental temperature, Humidity level, and Mean radiant temperature with an average score of 4.80, 4.72, and 4.65, respectively, are the most important and influential final indexes. It can be concluded that of the three components affecting the selection of effective indexes for assessing thermal comfort of residents in the cold and mountainous climate of Kermanshah city in Iran, the focus of building materials is more based on the environment and environmental conditions. https://www.ijumes.com/article_737273_543ee36192294a808557f4e8a4eef37e.pdf