Parts of the roof should be in partnership with the other factors from the environment. In fact, the construction should work entirely with the nature, and use as much as possible from its energy. Thus, the roof constructions should be more than a shelter above our heads. They protect us from the rain, the snow and the wind, but also they should be planned to absorb the heat from the sun. Normally, there are different ways for constructing a roof, and it depends of the purpose of the object and its placement.
Parts and Details in the Roof Constructions
Finally, click the link below and read something more about the roof constructions.