ROOF VENT

摘要

A vent for venting a building enclosure. The vent has a cover attached to a base with at least one attachment structure. The base has an attachment element for attaching the base to the building enclosure and an aperture to permit gas to pass in to and out of the building enclosure through the base. Preferably a moisture directing means is associated with an underside surface of the cover to direct and guide moisture therealong so that when the vent is installed on the building enclosure, moisture adhered to the underside surface of the cover will move under the influence of gravity to the moisture directing means which will in turn direct the moisture therealong to fall onto the base outside of the aperture. The cover may include a slanted side wall portion and the aperture is positioned on the base such that the center of the aperture is displaced from the center of the cover toward the slanted side wall portion. The base may also include a pair of moisture deflecting features along at least a portion of one of the nonslope sides of the vent to prevent moisture flowing under the influence of gravity along the base from with an area on the base covered by the cover to outside of the covered area at the nonslope sides. The base may also include a water deflecting ridge on its underside positioned between a downslope edge and the aperture to help deflect water away from the aperture.