A Dormer is a framed space with one or more windows that juts out of a sloped roof. The introduction of a dormer in a roof adds space in the sub-roof area (e.g., attic) and a visual component to a plain sloped roof.
The roofing materials for dormers includes shingles, metal panels, shakes and tile.
The presence of a dormer introduces some dormer geometry complexity address in the calculators below.