named after the French architect Francois Mansart (1598-1666); a double slope roof with the lower slope being longer and steeper, with a concave curve. Can be sloped on all four sides or just two sides (front and back). (IMAGE)
a very steeply sloped, straight, or concave roof that frequently is pierced with projecting dormer windows and sometimes with towers. The mansard roof is a key characteristic of the Second Empire style.
A four-sided roof that slopes upward from the edge of the roof to a square peak. This type of roof has two different slopes around all sides of the structure, the upper of which may be nearly horizontal and the lower nearly vertical.
A Mansard or Mansard roof in architecture refers to a style of hip roof characterized by two slopes on each of its four sides with the lower slope being much steeper, almost a vertical wall, while the upper slope, usually not visible from the ground, is pitched at the minimum needed to shed water. This form makes maximum use of the interior space of the attic and is considered a practical form for adding a story to an existing building. Often the decorative potential of the Mansard is exploited through the use of convex or concave curvature and with elaborate dormer window surrounds.