Gable- Gable roofs peak at the center ridge and extend downward on two opposite sides.  Gable roofs do not provide protection from the sun on the two gable ends.  Sometimes dormers are incorporated into gable and hip roofs.   A dormer is a projection that extends out of the roof to provide additional light and ventilation.

Hip- Hip roofs peak at the center ridge but extend downward on four opposite sides.  Hip roofs provide overhang protection on all four sides of the structure and are architecturally pleasing. 

Saltbox- Saltbox roofs are characterized by what appears to be a gable roof that then slopes steeply on one side.

Shed- Shed roofs consist of a single steep plane.  They are often used in contemporary architecture.

Flat- Flat roofs are commonly referrred to as built-up roofs because of the way they are constructed in layers of tar and gravel. 

Gambrel- Gambrel roofs are characterized by the American barn style of roof.  They provide ample headroom in two-story construction.

Mansard-This style is named after a French architect who is credited with first using the style in Paris, France.   Paris had a zoning code that prevented multistory structures because structures were being built higher than the fire equipment could reach.  The zoning code defined the number of stories of a structure by the number of feet from ground level to where the roofing material began. Mansard cleverly brought the shingles down the walls of the top floor, thereby increasing the number of buildable stories without violating the zoning code.

Roof Styles