Fascia is a term which generally describes any horizontal surface which spans across the top of columns or across the top of a wall [1]. From the Latin word, meaning "band" or "doorframe"; in architecture. The word is pronounced with the "long-a" sound, /ˈfeɪʃə/, rhyming with the Japanese word geisha.
Specifically, used to describe the horizontal "fascia board" which caps the end of rafters outside a building, which can be used to hold the rain gutter. The finished surface below the fascia and rafters is called the soffit or eave. A soffit is also often installed between the ceiling and the top of wall cabinets in a kitchen, set at a 90 degree angle to the horizontal soffit which projects out from the wall.
In classical architecture, the fascia is the plain, wide band across the bottom of the entablature, directly above the columns. The "guttae" or drip edge was mounted on the fascia in the Doric order, below the triglyph.
In steep-slope roofing, a board that is nailed to the ends of a roof rafter; sometimes supports a gutter. In low-slope roofing, the horizontal trim located at the perimeter of a building. Typically, it is a border for the low-slope roof system.
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