You are installing building paper (WRB) on a wall that has multiple window openings. Which of the following application techniques is CORRECT for integrating the WRB around these openings?

Question: You are installing building paper (WRB) on a wall that has multiple window openings. Which of the following application techniques is CORRECT for integrating the WRB around these openings?

Answer options:

• Cut the WRB flush with the window rough opening, then butt-tape the joints.
• Install the WRB over the entire wall, then cut out the window openings and apply self-adhering flashing over the WRB. ✅ Cut the WRB into an 'I' shape, fold it into the rough opening, then install shingle-lapped self-adhering flashing from sill, to jambs, to head.
• Apply the WRB up to the window opening, then use caulking to seal the gap between the WRB and the window frame.

Correct answer: Cut the WRB into an 'I' shape, fold it into the rough opening, then install shingle-lapped self-adhering flashing from sill, to jambs, to head.

Explanation: The correct method involves cutting the WRB in an 'I' or 'X' shape, folding it into the rough opening, and then methodically applying self-adhering flashing or appropriate compatible flashing components in a shingle-lap fashion: sill first, then jambs overlapping the sill, and finally the head overlapping the jambs, to ensure continuous water shedding away from the opening.