What is a mansard roof

Under the term mansard roof you can imagine the type of roof, which has a lower part made in a large slope and the upper part on the contrary, in a slight inclination. The mansard roofs are most often found in historic buildings, so many mansard houses are not used today due to the arrival of new building technologies. 

The attic roof can be covered with different types of roofing that are designed for roofs with a higher slope. The mansard roof, with its construction, ranks among the saddle roofs.  The disadvantage is relatively costly realization, on the contrary the advantage is the increase in the economy of the building.