Instructions / Assembly
INSTALLATION INSTRUCTIONS
for Wood/Clad Wood Windows with Exterior Trim or Nail Fin (JII024)
Newer construction methods have led to an increase in air and water 
tightness in buildings. This frequently leads to negative air pressure 
inside the home, which can draw water through very small openings. 
Our installation method integrates the window with the weather 
barrier of the structure (typically building wrap).
Thank you for s e l e c t i n g   JELD-WEN products. Attached are  
JELD-WEN’s recommended installation instructions for metal clad wood 
windows  with  nailing  fin  or  primed  wood  windows  with  exterior 
trim. While the use  of these installation instructions  is recommended, 
installation in  strict compliance  with  AAMA  specications  (2400-02) is 
an  alternate  method  of  installation  and  will  not  affect  the  JELD-WEN 
limited warranty.
Not all window types may be installed into every wall condition in all 
areas. Consult your local building code ofcial for applicable building 
codes and regulations. Local building code requirements supersede 
recommended installation instructions.
Please Note! These instructions do not apply to bow and bay windows 
and apply only to windows with a horizontal at sill. Installations 
where the sill is higher than 35 feet above ground level, or any product 
installation into a wall condition not specically addressed in these 
instructions must be designed by an architect or structural engineer. 
Failure to install windows into square, level, and plumb openings could 
result in denial of warranty claims for operational or performance 
problems.
Note to Installer: Provide a copy of these instructions to the building 
owner. By installing this product, you acknowledge the terms and 
conditions of the limited product warranty as part of the terms of the 
sale.
IMPORTANT INFORMATION & GLOSSARY
ROUGH OPENINGS
GLOSSARY
Applied Nailing Fin
A mechanically attached vinyl n that creates a ange around the 
perimeter of the window and is used to attach the window to the rough 
opening
Buck
A wood framework attached to the masonry inside a window or patio 
door rough opening.
Integral Nailing Fin
A n that is part of the extruded aluminum cladding and used to attach 
the window to the rough opening.
Masonry Clip
A galvanized metal strap that secures the window to the structure.
Mulled Unit
Two or more window units structurally joined together.
Precast Sill
A pre-formed concrete block placed in the sill of a masonry/block wall to 
support a window.
Shiplap
The layering method in which each layer overlaps the layer below it so 
that water runs down the outside.
Estimated Install 
Time for New 
Construction
First Time: 4.0 hr.
Experienced: 2.5 hr.
Professional: 1.5 hr.
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Buck
Sheathed Wall
This installation guide specically addresses masonry/block wall, 
sheathed wall and open-stud construction.
MASONRY/BLOCK WALL CONSTRUCTION
This installation assumes that 
a framework of studs (often 
called a buck) has already been 
properly fastened and sealed to 
the concrete/masonry wall by a 
building professional.
FULLY SHEATHED WALL CONSTRUCTION
The wall framing is covered by sheathing. Windows will be mounted 
ush against the sheathing. This installation assumes building wrap is 
properly installed prior to installation.
OPEN-STUD CONSTRUCTION
The wall framing must be 
covered by backing support 
before the window can be 
installed. The window will be 
mounted with the nailing n/
exterior trim ush against the 
applied backing support.
This backing support should be a 
non water-degradable, thin (max. 
1/8" thick) sheet material such 
as vinyl sheeting. Completely 
surround the rough opening with 
the backing support. Backing support must be applied before building 
wrap.
Trimmer 
studs
Header
Sheathing
King 
stud






