Window and wall assembly

摘要

A window-and-wall assembly comprises an exterior support wall of a building enclosure defining a frame opening carrying a window frame for mounting on the exterior side of the exterior wall to span the frame opening. The window frame has an area that is bigger than that of the frame opening so as to largely overlap the frame opening at the edges. A glazing and frame assembly is supported in the window frame and may be fixed or openable. An air barrier sheeting located on and covering the external side of said support wall surrounds the window frame, and rigid insulation sheeting is positioned on the support wall exteriorly of the air barrier sheeting. The sandwiched barrier sheeting thus combines the function of the traditional air barrier and weather barrier and is less prone to perforation or damage than either.