Abstract
Traditional Indonesian and Dutch colonial buildings often include an attic for ventilation and natural lighting. However, most Manado homes have corrugated zinc roofs and no attic ventilation. Zinc-roofed building roof ventilation and thermal comfort in Griya Paniki Indah, Taman Mapanget Raya, and Kharisma Koka housings are studied. We created two test cells with and without roof ventilation. A vented ceiling cools the test cell by 1.2 °C during the day. Modern, simple homes with unventilated roofs dominate the three residential districts. All responders reported daytime and nighttime discomfort or excessive temperatures. Residents were striving hard to control the room's environment due to these conditions. Air conditioning, fans, windows, and ventilation are used daily. Thus, attic ventilation benefits must be publicised. This improves building and household energy efficiency and thermal comfort.
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