Well the roof particularly defines the form of art rather than just making an architectural design for functionality.
Flat top mansard roof.
However unlike a traditional mansard roof these roofs had a flat top.
Later on many small commercial buildings also adopted a mansard style roof.
Mansard roof was not used quite as often in traditional homes despite it was featured in many high rise residential buildings especially in the late 1960s and 1970s.
Mansard roofs can include window dormers and often do since the space is usable and therefore the dormers provide natural light.
The steep roof with windows creates an additional floor of habitable space a garret and reduces the overall height of the roof for a given number of.
However unlike a traditional mansard roof these roofs had a flat top.
This mansard style roof flares out at the bottom.
Later on many small commercial buildings also adopted a mansard style roof.
The pyramid version of the mansard roof includes a pyramid design on top of the steep sides instead of a flat top.
The mansard roof is a combination of gambrel and hip roof.