Building Enclosure
Generally, the exterior of a building including roofs, and sometimes including decks, patios or other exterior features of a building. RCW 64.50 defines building enclosure as “[T]hat part of any building, above or below grade, that physically separates the outside or exterior environment from interior environments and which weatherproofs, waterproofs, or otherwise protects the building or its components from water or moisture intrusion. Interior environments consist of both heated and unheated enclosed spaces. The building enclosure includes, but is not limited to, that portion of roofs, walls, balcony support columns, decks, windows, doors, vents, and other penetrations through exterior walls, which waterproof, weatherproof, or otherwise protect the building or its components from water or moisture intrusion.” RCW 64.50.010(2)
