A building enclosure rain control strategy that accepts that some water will penetrate the outer surface (the cladding, which “screens” rain) and removes this water back to the exterior by gravity drainage over a drainage plane, through a drainage gap, and exiting via flashing and weep holes. In essence it is a drained system, however, some use the term only for systems that have larger drainage gaps (e.g., 1/2″) or just for systems that are also ventilated (a ventilated drained approach) or just for systems that attempt to pressure-equalize.

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