1.

Install the window “plumb, level and square” into the rough opening prepared with Joint & Seam Filler and/or FastFlash as shown in 4.1 and 4.3.

2.

Use AirDam as the interior air sealant to ensure compatibility with the treated rough opening and create a long-lasting, weather-tight seal (see 8.1).

3.

To transition from the air- and water-resistive barrier to the rigid metal cap flashing, apply a bead of FastFlash immediately above the top edge of the rigid metal cap flashing. Use a dry joint knife or trowel to spread the FastFlash a minimum of 1 inch onto the metal flashing. Ensure all fasteners are covered with FastFlash and create a seamless counterflashing membrane, which directs bulk water from the air- and water-resistive barrier to the rigid metal cap flashing.