Copper dormers extend outward from the sloping surface of the roof, usually encapsulating a vent, window, or other roofing structure. Window dormers add usable space to the roofing interior, protect the window inside, providing light and air-flow to the interior. In general, dormers helps to normalize the room's interior. The building's exterior can resemble a quaint cottage or grandiose church, depending on the dormers size, type, and placement.
As you can imagine, copper dormers come in a variety of types and styles. Gable (or Dog-house) dormers have two sloping roof segments that meet in the middle, resembling a dog house. Eyebrow dormers, in which the roofing material carries over the top of the dormer, making up its roof, and resembles a half-closed or sleepy eye. And the beautiful bonnet dormer, with a rounded roofing shape that looks arched when viewed from the front.
While dormers can be made out of wood and other materials, copper dormers enjoy the same incredible longevity as any other copper product and will develop the same antique patina for a wonderfully aged look.