Installation Instructions
6
1. Cut a piece of weather barrier self-adhering tape
4" wide and as long as the opening width plus 8"
(FIGURE 1). Apply to face of exterior wall so 1"
extends above the opening and 4" extends beyond
each side of the opening. Cut along the corners 
of rough opening and fold down onto the sill 
(FIGURE 2).
2. Apply a second continuous piece of weather
barrier self-adhering tape on the top surface of the
rough opening sill. 
Cut tape the thickness of the wall and 12" longer
than the width of the opening. Align flush with 
interior of the wall (FIGURE 3). Start the piece
(approximately 6") up the side of the rough opening
and run it to the bottom of the opening, to the 
other side of the opening, and 6" up the other 
side (FIGURE 4). Use a rubber roller to apply 
barrier to surface (FIGURE 3).
FIGURE 1
FIGURE 2
Sill Preparation – All Units
1"
9"
4"
WRB FOLDED INTO
ROUGH OPENING
FIGURE 3
FIGURE 4
6"










