Pella 80GY0102 - Manual (Page 3)

D. Fold the water resistive barrier (1D). Fold side and bottom flaps
into the opening and staple to inside wall. Fold top flap up and
temporarily fasten with flashing tape.
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E. Apply sill flashing tape #1. Cut a piece of flashing tape 12"
longer than the opening width. Apply at the bottom of the
opening as shown (1E) so it overhangs 1" to the exterior.
Note: The tape is cut 12" longer than the width so that it
will extend 6" up each side of the opening.
F. Tab the sill flashing tape and fold. Cut 1" wide tabs at each corner (1/2" from each side of
corner) (1F). Fold tape to the exterior and press firmly to adhere it to the water resistive barrier.
G. Apply sill flashing tape #2. Cut a piece of flashing tape 12" longer than the opening width.
Apply at the bottom, overlapping tape #1 by at least 1". DO NOT allow the tape to extend
past the interior face of the framing (1G).
Note: The flashing tape does not need to extend all the way to the interior of the framing.
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H. Install and level sill spacers. Place 1" wide by 1/4" thick
spacers on the bottom of the window opening 1/2" from each
side. Spacers are also required at points where windows are
joined in multiple window applications. Add shims as necessary
to ensure the spacers are level. Once level, attach spacers and
shims to prevent movement.
Note: Improper placement of shims or spacers may result in
bowing the bottom of the window.
2
PREPARING THE WINDOW
A. Remove plastic wrap and cardboard packaging from window. DO NOT remove plastic
shipping spacers located between the window sash and frame. The shipping spacers will help
keep the window square during installation. DO NOT unlock or open the window until it is
fully fastened.
Note: If screens, grilles or hardware are removed from the window at this time, label them
and store them in a protected area.