Pella Typical Wood Frame Construction 801U0102 - Manual (Page 7)

A. Insert closed cell foam backer rod into the space around the
WINDOW
Note: Backer rod adds shape and depth for the sealant line.
x
x
B. Apply a bead of high quality exterior grade sealant to
the entire perimeter of the window.
Note: For wood siding applications, when using
the flexible fin, ensure the sealant bead covers the
exterior edge of the fin weather-strip.
INTERIOR FINISHING
)F
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Note: To maintain proper product performance do not paint, finish or remove the weather-
stripping, mohair dust pads, gaskets or vinyl parts. Air and water leakage will result if these
parts are removed. After finishing, allow venting windows and doors to dry completely before
closing them.
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&OR
C. Shape, tool and clean excess sealant. 7HEN
the sealant should be the shape of an hourglass.
Note: This method creates a more flexible sealant
line capable of expanding and contracting.