The edge of a roof that overhangs the exterior wall is called the eave. Eaves are key in architectural design for both aesthetic appeal and functionality, aiding in protection from the elements and regulation of sunlight.
The term that refers to the edge of the roof that overhangs the exterior wall is the eave.
Eaves are instrumental in providing shade and protection to the sides of buildings and play an important role in the architectural design and functionality of structures.
Not only do they protect the walls from the elements, but eaves also help with energy efficiency by controlling the amount of sunlight that enters through windows.
As seen in architectural details such as the Casa Batllo, where the roof arches upward resembling the back of a dragon, eaves can also contribute to the aesthetic of a building.
Even in settings where aesthetic and symbolic importance is emphasized, such as the roof of a structure adorned with elements dedicated to St. George or the double-eave hipped roof found in imperial buildings, eaves maintain their functional roles while adding to the visual impact.