Lookout (architecture)
Encyclopedia
A lookout, lookout rafter or roof outlooker is a wooden joist
that extends in cantilever out from the exterior wall (or wall plate) of a building, supporting the roof
sheathing and providing a nailing surface for the fascia
boards. When not exposed it serves to fasten the finish materials of the eaves
.
Joist
A joist, in architecture and engineering, is one of the horizontal supporting members that run from wall to wall, wall to beam, or beam to beam to support a ceiling, roof, or floor. It may be made of wood, steel, or concrete. Typically, a beam is bigger than, and is thus distinguished from, a joist...
that extends in cantilever out from the exterior wall (or wall plate) of a building, supporting the roof
Roof
A roof is the covering on the uppermost part of a building. A roof protects the building and its contents from the effects of weather. Structures that require roofs range from a letter box to a cathedral or stadium, dwellings being the most numerous....
sheathing and providing a nailing surface for the fascia
Fascia (architecture)
Fascia is a term used in architecture to refer to a frieze or band running horizontally and situated vertically under the roof edge or which forms the outer surface of a cornice and is visible to an outside observer...
boards. When not exposed it serves to fasten the finish materials of the eaves
Eaves
The eaves of a roof are its lower edges. They usually project beyond the walls of the building to carry rain water away.-Etymology:"Eaves" is derived from Old English and is both the singular and plural form of the word.- Function :...
.