GreenGuard Residential Building Wraps - Manual (Page 8)

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B U I L D I N G W R A P A N D F L A S H I N G I N S T A L L A T I O N
3. Install the window in accordance with the window manufacturer’s
installation instructions. Typically, this requires that a bead of
sealant be applied to the back side of the window flange prior to
installing the window (see Figure 3A). IMPORTANT: DO NOT SEAL
THE BOTTOM FLANGE OF THE WINDOW. Attach the window using
fasteners specified by the window manufacturer.
4. Install the jamb flashing so that it overlaps the sill flashing or flashing corner
guards. (see Figure 3B).
5. Install the head flashing so that it overlaps and extends beyond the
jamb flashing. Fold the building wrap down at the header so that it
overlaps the head flashing (see Figure 3C). Tape the diagonal cuts
in the building wrap at the header (see Figure 3D).
5B. Enhanced Installation (Windows with
Mounting Flanges – Wrap Cut-Back Method)
Note: The following installation information is intended to represent a “best
practices” approach and is not intended to address all possible construction
scenarios. Some of the information described below for installation of building
wrap and flashing materials is similar to that described in ASTM E 2112, Method
A1.
1. Install GreenGuard® Building Wrap over the entire exterior wall and make
a modified “I” cut through the building wrap at the window opening (see
Figure 4A). Cut a header flap in the building wrap and fold material above
top of window and tape. Cut building wrap on sill to promote flashing-to-
wood adhesion. On the sides of the rough opening, mark off a vertical line
approximately 3 inches from the opening.
FIGURE 3C:
INSTALLATION OF
WINDOW HEAD
FLASHING
FIGURE 3B: INSTALLATION OF WINDOW JAMB FLASHING
FIGURE 4A: PREPARATION OF ROUGH OPENING
FIGURE 3D: INSTALLATION OF WINDOW
TAPE HEAD FLASHING
FIGURE 3A: INSTALLATION OF WINDOW
NOTE: DO NOT SEAL BOTTOM FLANGE
OF WINDOW
PREFERRED METHOD