Installing Casement
and Awning Windows 
Window Fitters Guide to Window Installation 
54                ©2022 AWDI, LLC Do not reproduce without permission
Casement and Awning type windows are the most
energy efficient operable windows available. They allow
the least amount of air infiltration when closed, allow
the most ventilation when opened, and can even allow
ventilation during rain without letting water in.
Because the screens are inside mounted, they stay
cleaner, and are more easily removed and cleaned.
And for extreme climates, glass storm panels can be
mounted in the interior screen tracks.  This is an inex-
pensive and effective way to get the added advantages
of triple glazing.
Security is improved with Casement and Awning
Windows.  The roto -operators allow the window to be
partially opened and resist additional forced opening.
Egress (the code-required ability to exit sleeping areas
during emergencies) is also improved.  Opening the
Casement/Awning type window creates an immediate
clear emergency exit which is twice the area of a fully
opened double-hung or slider.
Maintenance and cleaning is somewhat simpler with
Casement/Awning type windows because the exterior
of the glass can be cleaned from inside the house with-
out tilting or removing the sash.  Because the sash just
presses against the frame when closed, and then is
released when opened, there is no wear and tear on the
weather-stripping which prolongs the effectiveness of
the weather-tight seal .
Large Casement Windows, with the extreme weight 
of insulated glass panels, can be cumbersome. 
Care should be taken to avoid overly large units. 
The cantilevered weight can warp and deform the sash
and hinge mechanisms causing the window to be out-
of-square. If this occurs, the window will be harder to
close, and may not seal as tightly.
Vinyl Casement and Awning Windows are usually 
manufactured with fusion-welded frame and sash
corners. The added strength resists deformation under
load to keep the unit operating properly
for the life of the window.
Installation is Simple
Vinyl Casement and Awning Windows can be installed
like other vinyl replacement windows.  
They will fit into old wood double hung frames after the
sash has been removed.  They will fit into most 
all openings prepared for standard double hung 
vinyl replacement windows-even if these openings 
are prepared from old openings that contained 
aluminum or steel windows.
SAMPLE MANUAL

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