How to Guide

PRODUCT GUIDE
Aluminum Sliding/Rolling Windows (JPG003)
4
PROPER WINDOW INSTALLATION - CONTINUED
FRAME TWISTS
Attach two pieces of string to
frame/sash, corner to corner. If
there is a gap between strings at
center point larger than 1/8" for
windows up to 4' wide or high,
or 3/16" for windows larger than
4' wide or high, the frame is not
at. Repeat by switching strings
and re-measuring.
PROPER SHIMMING
Measure width of frame at top,
center, and bottom. If any two
measurements differ more than
1/16", the frame is over or under
shimmed. Repeat process and
measure height of frame.
LEVEL AND PLUMB
For plumb, place level against
each side jamb or use a plumb
bob. For level, place level against
head jamb and sill.
SQUARE
Measure frame/sash from top left
to bottom right corner and from
top right to bottom left corner.
If measurements differ by 1/8"
for windows up to 20 sq. ft. or
1/4" for windows larger than 20
sq.ft., the unit is out-of-square.
STRAIGHT SIDE JAMBS
Place level against inside of
sidejamb.
Look for gaps anywhere between
level and side jamb. Repeat steps
for other side jamb.
FRAME/PANEL BOW
Inspect interior and exterior
frame jambs, or stiles/rails of
panel (not glass) to determine
ifbowed.
1. Cut piece of string slightly
longer than height of frame
or panel.
2. Pull tightly and stretch string
to upper and lower corners
of jambs, or, stiles or rails of
panel. Tape securely.
3. Look for gap between string
and frame or panel. If gap
measures more than 1/16" at
any point, the panel is bowed.
String
Gap
Frame/
Panel