Window Flashing Standards for Elastomeric Stucco Walls

A white-framed window is installed in a wall covered with black building wrap. The window is surrounded by silver flashing tape for waterproofing, and trees are reflected in the window glass.

Architects and installers who have watched a stucco wall assembly fail rarely point to the finish coat as the culprit. The failure almost always traces back to a window opening, and more specifically to a flashing sequence that was incomplete, out of order, or incompatible with the weather-resistant barrier behind the cladding. Window openings interrupt […]