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The main cooling strategy in warm climates, as that of Cuba, is the solar control. However, the sun brake was in disuse, so glass windows without solar protection was increased and the costs of its affectations were ignored. The objectives of this paper are: to characterize the historical evolution of the use of brise-soleil as a shady resource and to obtain the designing angles for solar protection elements so that they can be more efficient and economic. Through virtual simulation (validated through a scale model experiment) the parameters proposed by the current rules and other national documents regarding the design of solar protection in architecture were checked. The criterion for a single type of solar protection element in the north and south facades in the city of Camaguey was changed. Besides, it was demonstrated that multiple elements are more efficient. On the other hand, optimized angles for the design of these elements were proposed. [ABSTRACT FROM AUTHOR]