Setting and fastening the window – Pella Clad Windows with Flush Flange 81CP0101 User Manual

Page 6

Window

Frame

3/4"

Min.

A. Test fit the window in the opening from

the exterior. Insert shims around the

window temporarily while you verify that

the window will fit into the opening and

the window flanges will overlap the stucco

or existing aluminum window frame by a

minimum of 3/4" on all (4) sides.
Note: Fix any problems with the opening

before proceeding. If required, the

exterior flush flange may be trimmed to

fit inside exterior surround trim. Lay the

window down on a flat surface. Use an

electric shears, circular saw or table saw to

cut the flange.

B. Apply Pella SmartFlash tape across the

head of the window extending 6" down

each jamb. Place the tape starting on the

aluminum cladding and extending onto

the wood frame.

Exterior

Weep holes

TWO OR MORE PERSONS WILL BE REQUIRED FOR

THE FOLLOWING STEPS.

C. Place a 3/8" diameter (min.) line of sealant around

outside edge of the existing window frame where

the frame meets the stucco. It is important to leave

a 2" gap in the sealant line at each of the weep holes

of the existing aluminum window frame.

E. Place a shim aligned with the top pre-drilled hole in

one jamb of the window frame. Trim all shims so they are

recessed back 1/4" - 1/2" from the interior face of the

window frame. Partially insert one 3-1/4" finish wood screw.

Repeat on the other jamb.

F. Continue placing shims at each pre-drilled hole

as needed to plumb and square the window. Check

the window for square by making sure the diagonal

measurement from corner to corner of the replacement

window is within 1/8" in both directions. Insert a 3-1/4" finish

wood screw into each pre-drilled hole in the frame. Finish

inserting the top screw in each jamb.
Note: DO NOT shim above the window. DO NOT over shim.

MAKE SURE THE FLANGE REMAINS PRESSED FIRMLY AGAINST THE WALL SURFACE

WHILE PLACING SHIMS AND FRAME SCREWS

D Insert the window from the exterior of the building

and center the window in the prepared opening.

Pella SmartFlash Tape

SETTING AND FASTENING THE WINDOW