1.

Apply FastFlash or Joint & Seam Filler as shown here.

2.

Cut existing building wrap way from rough opening a minimum of 2 inches.

3.

Step Three Apply AirDam to the outer edge of the rough opening and tool to a minimum of 20 wet mils.

4.

Press building wrap into wet AirDam.

5. Apply AirDam at interface of building wrap and rough opening, and tool it to a minimum of 20 mils, so that it half covers the building wrap and half overlaps into the rough opening.