dormer

A few have Asian-inspired elements like flared or upturned columns or dormers, while others incorporate floral motifs and stained glass.

Plumbing vent pipes, dormers, turbine vents, chimneys, pot vents, powered attic ventilation fans, solar-array-panel brackets, etc., are all examples of things that are not a roof but found on roofs.

A dormer is a roofed structure for a window.

An attic conversion could need dormers to elevate the roofline and turn it into a bathroom or bedroom that meets the code.

They can add copper strips at the top of all the ridges on the roofs and dormers that will arrest the aging process of the shingles.