A punched window is set before the sill flashing membrane is lapped into the rough opening. The WRB is already cut around the opening. What should the crew do?
Correct Answer
B) Remove or reset as needed so sill flashing, jamb flashing, head flashing, and WRB laps shed water outward
Window flashing must be installed in water-shedding sequence with the WRB so water drains outward, especially at the sill. Other choices rely on sealant or omit critical parts of the flashing sequence.
Why This Is the Correct Answer
Window flashing must be installed in water-shedding sequence with the WRB so water drains outward, especially at the sill. Other choices rely on sealant or omit critical parts of the flashing sequence.
Why the Other Options Are Wrong
Option A: Proceed and depend on exterior sealant
Choice A (Proceed and depend on exterior sealant) is rejected because it leaves out the controlling Window flashing sequence result: Remove or reset as needed so sill flashing, jamb flashing, head flashing, and WRB laps shed water outward.
Option C: Foam the rough opening and skip flashing
The trap in C is Foam the rough opening and skip flashing. That selection is wrong because the option delays or omits the controlling step.
Option D: Install head flashing only because water runs down and use that item to close window flashing sequence
Choice D gives Install head flashing only because water runs down. Its specific error: the action skips the timing, documentation, or field-control step needed for Window flashing sequence.
Memory Technique
Tag the scene with window flashing sequence: wrong actor or wrong timing means the fix is not Remove or reset as needed so sill flashing, jamb flashing, head flashing, and WRB laps shed water outward.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use the index entry or section for "Window rough-opening flashing sequence" to confirm that Window flashing must be installed in water-shedding sequence with the WRB so water drains outward, especially at the sill.
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