Instructions / Assembly

INSPECT ROUGH OPENING (R.O.)
2
A
D
C
E
B
Installation Instructions
for Vinyl Windows with Integral Nailing Fin (JII001)
4
This installation guide only addresses masonry/block wall, sheathed
wall, open-stud construction and exterior foam insulation. For
exterior foam insulation construction, please reference the latest
version of FMA/AAMA/WDMA 500 for additional install and
framing details. If installing into an opening other than what is
identied, consult a building professional.
Masonry/Block Wall Construction
This installation assumes
that a framework of studs
(often called a buck) has
already been properly
fastened in a weatherproof
manner to the concrete/
masonry wall. The window
will be mounted into the
buck in a weatherproof
manner.
Verify Square, Level and Plumb
Buck
Header
Trimmer
studs
Sheathing
King
stud
Fully Sheathed Wall Construction
Sheathing is applied to the
exterior of the wall framing.
The window will be
mounted ush against the
sheathing or building wrap
in a weatherproof manner.
Open-Stud Construction
Sheathing is absent
and building wrap is
applied atop of the wall
framing. The window
will be mounted into
the rough opening in a
weatherproof manner.
The use of a sill pan and other barriers will decrease
the rough opening height clearance. Adjust the
opening dimensions accordingly.
Rough Opening Requirements
• Verify the width and height of the rough opening is 1/2" larger than
the window width and height. Openings for mulled units should be
3/4" larger than the window width and height.
• Verify the rough opening
is square. The (A) and (B)
measurements should be the
same. Suggested deviation
from square is no more
than1/4".
• Verify the rough opening is
level and plumb (C, D and
E). Suggested deviation is no
more than 1/4".
• The rough opening sill should
not be crowned or sagged
(D), but rather level or sloped
(positive slope) to the exterior.
• The exterior face of the rough opening should 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 Retrot Installations
Verify the rough opening framing is structurally sound. Contact your local
waste management entities for proper disposal or recycling of products
being removed.
Exterior Foam Insulation Construction
Exterior Foam insulation
is applied to the exterior
of the wall framing. The
window will be mounted
to a structural support
member on the same
plane as the exterior
foam insulation in a
weatherproof manner
(reference the latest version
of FMA/AAMA/WDMA
500 for additional install
and framing details).
Exterior foam
insulation
Structural
support
member
Trimmer
studs