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<p>Extreme, high indoor temperatures in urban slums of tropical regions pose significant health risks, particularly for vulnerable populations. This study investigates the influence of housing construction materials on indoor temperatures in Dhaka, Bangladesh, in the context of rising global temperatures. A longitudinal prospective survey was conducted between January and December 2022 in five urban slums of Dhaka, covering 44 dwellings purposively selected to ensure good spatial coverage and to reflect predominant construction materials. Temperature data loggers were placed unobtrusively to record hourly indoor temperatures. Housing construction materials, including cement, tin, or a combination of both, were examined. Negative binomial models were employed to analyze the impact of construction materials on hours per day exceeding 32&#xa0;°C and 35&#xa0;°C. Descriptive statistics showed wide temperature variations based on construction materials, with tin-tin dwellings exhibiting the widest temperature range (19.1&#xa0;°C to 47.2&#xa0;°C). Negative binomial models showed that houses with tin elements, especially those with both tin roofs and walls, experienced significantly more hours above 35&#xa0;°C compared to cement-cement houses. Tin-tin dwellings had the greatest risk of extreme, high indoor temperatures. The study underscores the substantial influence of housing construction materials on indoor temperatures, with tin sheeting contributing to rapid temperature increases. This has critical implications, particularly for vulnerable populations, as mean temperatures continue to rise. Policies addressing building materials and climate resilience are essential to mitigate heat-related health risks in urban slums.</p>

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Impact of Housing Construction Materials on Indoor Temperatures in Urban Slums of Dhaka, Bangladesh

  • 期刊论文

  • 发表日期：

    2026年4月25日

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  • Syed Manzoor Ahmed Hanifi,
  • Md. Sharoardy Sagar,
  • Daniel D. Reidpath

摘要

Extreme, high indoor temperatures in urban slums of tropical regions pose significant health risks, particularly for vulnerable populations. This study investigates the influence of housing construction materials on indoor temperatures in Dhaka, Bangladesh, in the context of rising global temperatures. A longitudinal prospective survey was conducted between January and December 2022 in five urban slums of Dhaka, covering 44 dwellings purposively selected to ensure good spatial coverage and to reflect predominant construction materials. Temperature data loggers were placed unobtrusively to record hourly indoor temperatures. Housing construction materials, including cement, tin, or a combination of both, were examined. Negative binomial models were employed to analyze the impact of construction materials on hours per day exceeding 32 °C and 35 °C. Descriptive statistics showed wide temperature variations based on construction materials, with tin-tin dwellings exhibiting the widest temperature range (19.1 °C to 47.2 °C). Negative binomial models showed that houses with tin elements, especially those with both tin roofs and walls, experienced significantly more hours above 35 °C compared to cement-cement houses. Tin-tin dwellings had the greatest risk of extreme, high indoor temperatures. The study underscores the substantial influence of housing construction materials on indoor temperatures, with tin sheeting contributing to rapid temperature increases. This has critical implications, particularly for vulnerable populations, as mean temperatures continue to rise. Policies addressing building materials and climate resilience are essential to mitigate heat-related health risks in urban slums.