MOISTURE MANAGEMENT SYSTEMS AND METHODS FOR BUILDING OPENINGS

摘要

Moisture management systems and methods are provided for managing moisture i n a vicinity of an opening in a building wall. Such systems comprise a sill pan mountable in the building wall atop a horizontally-extending lower frame member of the opening. The sill pan may include: a base section having an upper surface which slopes downwardly and outwardly from a location interior to a lower flange portion of a window frame to an interstitial space between a sheathing layer of the building wall and an external building wall layer for directing moisture received thereon toward the interstitial space; and a plurality of transversely spaced-apart window-support members having upper surfaces located above the upper surface of the base section and oriented substantial ly horizontally for receiving a lower portion of the window frame. Such systems also compris e a lower vent mountable in the building wall outwardly of the sill pan. The lower ven t may include: a vent component which defines a plurality of apertures that provid e fluid communication between an exterior of the building wall and the interstitial space; and a hood shaped to extend downwardly and outwardly from a location above the apertures in the vent component and interior to the exterior building wall layer to a location external to the building wall.