JELD-WEN JII025 Wood/Clad Wood Windows without Exterior Trim or Nailing Fin - Manual (Page 4)

INSTALLATION INSTRUCTIONS
for Wood/Clad Wood Windows without Exterior Trim or Nailing Fin (JII025)
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 frame width +
1 3/4".
3. Measure the width of the
frame 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.
9. Install the continuous shim as
follows:
Note! Place continuous shim
where window will sit. It 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.
Interior
Width of
rough opening
12"
Continuous
shim
Depth of
window
minus 1/4"
Flashing
2" min.
Measure
frame
width