Pella 81470102 User Manual

Page 10

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A. Install wood blocking between the top of the

window and the soffit as shown. The blocking
should be flush with the exterior of the window
frame.

B. Apply a bead of sealant on the leg of the head

frame expander and install by tapping on it
using a block of wood with rounded edges and
a hammer. Frame expander is pre-notched and
bent from the factory.

SEALING THE WINDOW TO THE

EXTERIOR WALL CLADDING (CONTINUED)

C. NEW CONSTRUCTION APPLICATIONS

WITH SQUARE JAMB COVER: Flash

from jambs to water resistive barrier. In new
construction application, use flashing tape to
flash from the jamb of the unit to the water
resistive barrier. Overlap onto the unit jamb
at least 3/8”. If necessary, repair any punctures
with another piece of flashing tape

D. Insert backer rod. If required, install siding,

then insert backer rod into the space between
the exterior finish material and unit exterior
deep enough to provide at least a 1/2" clearance
between the backer rod and the exterior face of
the wall sheathing.

Note: Backer rod adds shape and depth for the
sealant line.

E. Apply a bead of high quality exterior grade

sealant to the entire perimeter of the window,
except for one inch at either side of the sill. DO
NOT fill between the frame expander and the
under side of the seat board.

F. 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.
Installation Complete.

Exterior

INSTALLATION USING ANGLE JAMB COVERS:

G. Cut jamb covers to length. Measure height of one flanker unit not including

head & seatboard. Cut jamb covers to 4-9/16” taller than flanker unit height.

H. Notch leg of jamb covers. On one jamb cover, notch the leg 3” from one end and 2” from the

other end. Mirror these notches on the other jamb cover, to create a right and left handed part.

I. Install exterior jamb covers. Apply sealant along the leg of each jamb cover and drive this leg

into the accessory groove using a block of wood with rounded edges and a hammer. Install the
jamb covers with the 3” notch towards the sill.

J. Nail the jamb covers to the wall using one nail on each end and one in the center.

K. Cut two pieces of flashing tape 6” longer than the jamb covers. Apply tape 3” above the top

of the jamb cover, overlapping it onto the water resistive barrier.

If using Square Jamb Cover, Proceed to Step 6C.
If using Angle Jamb Cover, Proceed to Step 6G.

Angle Jamb Cover

Square Jamb Cover

Angle Jamb Cover

ALL

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