Pella 80GY0102 - Manual (Page 8)

8
SEALING THE WINDOW TO THE
EXTERIOR WALL CLADDING
When applying siding, brick veneer or other exterior finish material, leave adequate space
between the window frame and the material for sealant. Refer to the illustration that
corresponds to your finish material.
Note: The sealant details shown are standard recommendations from the sealant industry.
Contact your sealant supplier for recommendations and instructions for these and any
other applications.
A. Insert backer rod into the space around the window to provide approximately 1/4" clearance
between the backer rod and the exterior face of the exterior finish material.
Note: Backer rod adds shape and depth for the sealant line.
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B. Apply a bead of high quality exterior grade sealant
to the entire perimeter of the window.
C. Shape, tool and clean excess sealant. When finished,
the sealant should be the shape of an hourglass.
Note: This method creates a more flexible sealant line
capable of expanding and contracting.