soffit
SOF-it
/ˈsɒf.ɪt/
The exposed underside of an architectural structure, such as a roof overhang, arch, or porch ceiling.
In residential construction, the soffit spans horizontally from the exterior siding to the outer rafter edge, shielding rafters and providing attic intake ventilation.
The story behind the word. Derived from Italian 'soffitta', originating from Latin 'subfixus' ('sub' = under, 'fixus' = attached). It literally means something 'fastened underneath' an architectural arch or roof projection.
Word relationships
- underside: Underside is a general spatial term, while soffit is a precise architectural term for exposed overhang bottoms.
- fascia: Fascia is the vertical board facing outward at the roofline, whereas soffit is the horizontal panel facing downward.
Commonly confused with
- fascia: Fascia sits vertically along the rafter tips; soffit sits horizontally underneath the overhanging eave.
Word family
- soffited (adjective): Finished with or enclosed by a soffit.
Collocations
- vented soffit
- soffit board
- soffit vent
- aluminum soffit
Example sentences
- "Perforated vinyl soffit panels allow air to flow into the attic space while keeping pests out." Residential attic ventilation design
- "Squirrels chewed through the wooden soffit under the roof eaves to nest inside the attic." Pest inspection report
Memory hook
SOFFIT is SOFTLY tucked underneath the roof overhang facing down. Underside roof panel.
When not to use
Do not confuse with the roof surface itself; the soffit is strictly the horizontal underside panel facing the ground.
Fun facts
- Perforated soffit vents work in harmony with roof ridge vents to create a natural convective chimney effect, drawing cool air in at the eaves and pushing hot, humid air out the top.
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