A lookout, lookout rafter or roof outlookerDefinition-of.com Dictionary definition of roof outlooker
/ref> is a wooden

joist A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. When incorporated into a floor framing system, joists serve to provide stiffness to the s ...

that extends in

cantilever A cantilever is a rigid structural element that extends horizontally and is supported at only one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a canti ...

out from the exterior wall (or wall plate) of a building, supporting the

roof A roof ( : roofs or rooves) is the top covering of a building, including all materials and constructions necessary to support it on the walls of the building or on uprights, providing protection against rain, snow, sunlight, extremes of temper ...

sheathing and providing a nailing surface for the fascia boards. When not exposed it serves to fasten the finish materials of the

eaves The eaves are the edges of the roof which overhang the face of a wall and, normally, project beyond the side of a building. The eaves form an overhang to throw water clear of the walls and may be highly decorated as part of an architectural styl ...

Notes

Roofs Building engineering Structural system