JELD-WEN JII001 Vinyl Windows with Integral Nailing Fin - Manual (Page 3)

Verify Square, Level, and Plumb
A
B D
C E
A
B
D
C
E
Sealant
joints
Liquid
applied
flashing
INSTALLATION INSTRUCTIONS
for Vinyl Windows with Integral Nailing Fin (JII001)
3
REMOVE PACKAGING AND INSPECT WINDOW
INSPECT ROUGH OPENING
REMOVE PACKAGING
Remove shipping materials such as corner covers, shipping blocks or
pads. If there is a protective film on the glass, do not remove it until
installation and construction are complete.
INSPECT WINDOW
• Cosmetic damage
• Product squareness (diagonal measurements not more than 1/4"
different)
• Correct product (size, color, grid pattern, handing, glazing, energy-
efficiency requirements, etc.)
• Verify the width and height
of the window are each
1/2"- 5/8" smaller than the
rough opening width and
height. Mulled units should be
3/4" narrower.
• Verify the rough opening
is square. The (A) and (B)
measurements above should
be the same. Maximum
allowable deviation from
square is 1/8" for windows
20 sq. ft. and smaller, and 1/4"
for windows larger than
20 sq. ft.
• Cracked frame welds or other frame damage
• Splits, cracks, holes, missing sections or other damage to the nailing
fin longer than 6" and/or within 1/2" of window frame
• For side-by-side mulled units, a drip cap that extends the length of the
frame plus 1/8" overhang on each end is required.
If any of the above conditions represent a concern, or if you expect
environmental conditions to exceed the window's performance rating,
do not install the window. Contact your dealer or distributor for
recommendations.
• Verify the rough opening is level and plumb (C) and (D). The
maximum allowable deviation is 1/16" for every 2' of rough opening
(not to exceed 1/8").
• The rough opening sill must not be crowned or sagged (D), but rather
level or sloped (positive slope) to the exterior.
• The exterior face of the rough opening must be in a single plane (E)
with less than 1/8" twist from corner to corner.
• Minimum double studs (king and jack/trimmer) should be used to
support the header at all rough openings.
FOR RETROFIT INSTALLATIONS
After removing the old window, remove sufficient cladding (siding,
stucco etc.) to expose enough intact building wrap to properly seal
the window to the opening. If damaged, apply new building wrap in
shiplap manner. Verify the rough opening framing is structurally sound.
Contact your local waste management entities for proper disposal or
recycling of products being removed.
PREPARE BUCK
Note! This section applies to
installations into a masonry
wall only. For installations into
a stud-framed wall, begin with
section 4, “PREPARE STUD-
FRAMED WALL.”
1. Seal any joint larger than
1/16" in the buck and
between the buck and the
concrete/masonry with
sealant.
2. Cover the buck and the
surrounding concrete/
masonry at the head and jambs with liquid applied flashing as shown.
3. If installing into a four-sided buck, seal the sill in a similar manner.
Note! Where the window will sit on the sill, shim to provide continuous
support to the sill. This shimming 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.
4. Align the shimming 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 shimming and tack into place or
secure with sealant. SKIP to section 5, “INSTALL WINDOW.”
1
2
3