Falts — a roof made of roll or leaf galvanized steel. On top steel can sometimes be covered with a polymer coating, which is good in the northern latitudes. Sometimes the folding roof is called such that it is made of non -ferrous metals, the connection of individual elements of this coating is made using the folds. Installation of the folding roof is not something super-complex, but it requires the presence of a certain experience so that all the work is quickly, but the quality should not suffer. The main advantage of such a roof is the fact that it can be used with any architectural forms. The folding roof can be arranged both on a solid base and on the crate. If the required step is not observed, a deflection of steel sheets may occur, and this leads to deformation of the joints connecting the sheets of metal. When the issue is resolved with the roof, there is a turn of a process called the installation of a snow retainer. Snow holders are special safety elements aimed at ensuring that the layers of snow do not fall, but go evenly when they begin to melt. In addition, all kinds of castles play an important role, which help excessive moisture (for example, that formed after rain). There are window castings, basement tints and so on.