The underside of the roof overhang — the horizontal surface visible looking up under the roof edge.
The horizontal underside of the roof overhang (eave) that spans between the exterior wall and the fascia board. Soffits are typically constructed from vinyl, aluminum, wood, or fiber cement panels and are often perforated or vented to allow outside air to enter the attic for ventilation. Proper soffit venting is paired with ridge venting to create continuous attic airflow.
Vinyl perforated soffit panels provided 9 net free square inches of ventilation per linear foot of eave.
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