How are open soffits characterized?

Open soffits are characterized by their lack of bottom enclosure. Unlike closed soffits, which feature a solid bottom that conceals the rafters and any insulation or ductwork within, open soffits do not have a ceiling or bottom material. This design allows for ventilation and promotes airflow in the attic or eaves, which can help with temperature regulation and moisture control. Open soffits are often found in styles that emphasize visibility and airflow, making them an important element in certain architectural designs. The absence of an enclosed bottom means that the underside of the roof structure is left exposed, which is the defining characteristic of open soffits.