JELD-WEN JII024 Wood/Clad Wood Windows with Exterior Trim or Nail Fin - Manual (Page 4)

INSTALLATION INSTRUCTIONS
for Wood/Clad Wood Windows with Exterior Trim or Nail Fin (JII024)
4
PREPARE STUD-FRAMED WALL
4
45°
FOR RETROFIT INSTALLATIONS
After removing the old window, remove sufficient siding 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. Continue with
the instructions.
PREPARE BUILDING WRAP
Note! Check with the building
wrap manufacturer to verify
the following steps will not
void their product warranty.
Follow manufacturers'
instructions.
1. Trim building wrap flush
with the rough opening.
2. At the head, cut building
wrap at 45° and tape up as
shown.
3. Trim the sides sufficiently
to allow the nailing fin to
be mounted against the
sheathing.
PREPARE 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
1 + 2 + 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.
Width of
rough opening
12"
Continuous
shim
Depth of
window
minus 1/4"
Flashing Nail fin position
2" min.
Measure
from trim
to interior
edge of
frame
Interior