Abstract: A baffle for use in an attic defined by a vertical exterior wall having a top wall plate, parallel ceiling joists supported by the top wall plate, and spaced apart, inclined rafters securely connected to the top wall plate and the ceiling joists is disclosed. The rafters typically have a roof deck fastened to their top surface. The baffle is installable between adjacent roof rafters to substantially block the flow of ventilating air through an opening located between the top surface of the wall plate and the underside of the roof deck. Once installed, the baffle of the present invention restricts flow of ventilating air between an exterior soffit and insulating material installed between the ceiling joists in the attic cavity.