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MORAIS, Caroline Santana de; RORIZ, Maurício. Thermal performance of green roofs: a case study in a tropical region. In: CONFERENCE ON PASSIVE AND LOW ENERGY ARCHITECTURE, 20., 2003, Santiago do Chile. Anais... Santiago do Chile, 2003.
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Abstract

Caretakers and others employees of apartment building usually have to stay during long periods of time in shelters that do not offer minimum conditions of thermal comfort. The terrible urban violence induces many designers to conceive these spaces as kinds of warlike shelters, almost without ventilation and with an excess of glass windows that, without appropriate protection, still heat even more the indoor climate. However, in countless examples, the low thermal performance of roofs originates the main source of the uncomfortable conditions. Some of these roofs are simply constituted of a flagstone, without any sun-protection. There are many serious cases, wherein the flagstone is made waterproof using asphalt, in which absortivity reaches the possible maximum. This article shows a case study carried out in the summer, wherein the performances of the roofs of two shelters were compared, one in dark common flagstone and another protected by vegetation. The advantages of the green roofs confirmed the theories on the subject.
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