JELD-WEN JII032 Wood Bay or Bow Windows with Nailing Fin or Exterior Trim - Manual (Page 4)

INSTALLATION INSTRUCTIONS
for Wood Bay & Bow Windows with Nailing Fin or Exterior Trim (JII032)
4
PREPARE STUD-FRAMED WALL
4
PREPARE/SHIM THE SILL
1. Use self adhesive flashing to waterproof the sill.
2. Flashing must have at
least 2" of visible material
below nail fin. Flashing
width must be at least
measurement
A + B + 1 3/4".
3. Measure the width of the
frame from the interior to
the nail fin (measurement
1) and subtract 1/4".
Transfer this measurement
from the outside edge of
the rough opening sill and
draw a line all along the
rough opening sill. This
is where the back of the
flashing will sit.
4. Cut a piece of flashing the length of the sill plus 12".
5. Place flashing on rough
opening sill, wrapping the
flashing up 6" on each
jamb as shown.
6. Pull release tape and set
flashing into place.
7. Fold the flashing down
onto the sheathing. Staple
flashing to the wall and seal
the corner edges as shown.
8. Smooth out any bubbles
or creases with a J-roller.
Remove and replace if
necessary.
9. Install the continuous shim
as follows:
Note! The continuous shim
must be 1/2" shorter than the
width of the window frame,
be 1/4" narrower than the
depth of the window frame
sill, should level the rough
opening sill and be no more than 1/4" thick.
Align the shim on the sill flush with the exterior and centered between
the side jambs. If installing a mulled unit, leave gaps at the mull joint(s)
so they don't sit on the shim and tack into place or secure with sealant.
Warning! To avoid injury, use at least two people to install. Adequately
support the window until fully installed.
Note! Window should be pre-drilled and countersunk before placing
inside the rough opening.
1. Pilot holes should be
spaced 1 1/2" from interior
edges, 4" from each corner
and then evenly spaced no
more than 12" around the
inside perimeter. Drill 1/8"
pilot holes and countersink.
2. For units with exterior
trim: run a 3/8" continuous
bead of sealant around
the interior of the window
where the trim meets the
window frame. Tool into a
fillet shape.
3. Run a continuous 3/8"
bead of sealant around
the interior side of the nail
fin on the side jambs and
head. On the sill, leave at
least a 2" gap every 12")
where it will contact the
rough opening.
4. Place window onto the
shims and tilt into the
rough opening. The
window sill must rest on
and be supported by the
shims.
INSTALL WINDOW
5
Countersink
1 1/2"
4"
5. Fasten window through
the nailing fin/trim
between 3" and 7" from
one lower corner.
6. Mill a 2x piece of material
to fill the gap in the jambs
between the framing and
the window.
7. Align side jamb shims with
the pre-drilled holes so
fasteners will penetrate
shims. Shims must be set
back at least 1/4" from the
interior of the jamb. Secure
shims with sealant.
8. Inspect window for square,
level and plumb (adjust
shims or remove and
reinstall if necessary).
9. Using #10 x 3 1/2" pan
head screws, fasten the
jambs, head, and seat
board through the pre-
drilled and countersunk
pilot holes. Screws should
penetrate the previously
installed shims.
Measure
frame
width
A
B
Interior
Width of
rough opening
12"
Continuous
shim
Depth of
window minus
1/4"
Flashing Nail fin position
2" min.
Gap
Framing
Shim
1/4"
sealant
gap
Jamb Cutaway from Top
3"- 7"