While the soffit protect the underside of the roof, forming a protective ceiling, the fascia board runs horizontally across the face of the roof rafters and trusses, covering the interior roof cavity.

"Fascia is a collagen-based connective tissue that covers muscles, bones, and organs," says board-certified dermatologist ...

They are also used as finish trim for door and window openings. When used to cover a building's fascia board, they are installed along the perimeter of the roof to guard the underlying boards and ...