GreenGuard Commercial Building Wraps - Manual (Page 6)

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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
7.0 FLASHING OF WINDOW ROUGH OPENINGS
When installing building wrap in conjunction with windows, it is important to integrate
all construction materials in order to prevent potential water intrusion. The following
installation details for windows represent a “best practices” approach that is consistent
with the various installation options provided in ASTM E 2112 (Standard Practice for
Installation of Exterior Windows, Doors, and Skylights).
Note: The project architect and superintendent should confirm all installation instructions
prior to beginning a project.
7A. WINDOWS WITH MOUNTING FLANGE
7A.1 CUTTING WRAP AT WINDOW
Make a modified “I” cut through the building wrap at the window rough opening. Make
two 45 degree 6-inch cuts in the building wrap at the window head as shown.
7A.2 PREPARATION OF WINDOW HEAD
Flip the building wrap at the header up and temporarily tape the flap to the wall. This flap
will be folded back down after the head flashing has been installed in a later step.
7A.3 WRAPPING OF WINDOW ROUGH OPENING
Fold the excess building wrap at the sides of the window inside
the rough opening, trim excess wrap and secure to the nearest
framing member as shown.
Figure 7A.1 PREPARATION OF A ROUGH OPENING
Figure 7A.2 PREPARATION OF WINDOW HEAD
Figure 7A.3 WRAPPING OF WINDOW ROUGH OPENING