1. Installation procedures are basically the same as
with "inside-
out" installa-
tions except
that the 
exterior "
blindstop" 
is chipped
away with 
the flat wood
chisel which
will free the
upper sash 
of the old window first. 
2. The parting stop is removed as in other installa-
tions which
will free the
lower sash. 
3. Windows
with alu-
minum tracks
are removed
as a unit once
the "blindstop"
are removed. 
4. The only other difference is that the interior stops
are undisturbed and left intact. The new window will
be applied “against” the interior stops in the same
fashion as against the exterior blindstop.  
5. Once the 
old pulleys,
cords, and
chains are
removed, and
the opening
cleared of
debris, Apply
Bedding
Sealant to
interior stops. 
6. Put the 
window outside the opening. Then, resting the 
bottom of the window on the sill, tilt the window
back in toward the interior stops. This, in effect,
places the window upright, against the interior stops,
and seals the opening.  
7. Temporarily secure the window. A sloped sill
requires support for the outer edge of the window. 
A sill angle cut to the proper length can be used. 
Window Fitters Guide to Window Installation 
49                ©2022 AWDI, LLC Do not reproduce without permission
Chiseling the Blindstop,
then removing the sash
and parting stops - clears
the opening to its full
height. The new window
can now be up to 3/4"
taller because there's no
need to clear the stool.
1/8” GAP
Foam Insulation
Sealant
Sealant
Capping
Sealant
Capping
Apply adhesive based caulk along the bottom surface
of the sill angle to adhere it to the sill and slide it up
under the bottom of the window until it is snug.
8. Once secured in the opening, the new window can
be opened, and the screws installed to mount the
window to the frame. Plumb and square the window
in the opening. Shim as necessary using flat shim
stock behind the mounting screws.
9.  Capping made from coil stock, or new exterior
moulding, can now be applied on the outside against
the new window. Following the caulking guidelines, 
caulk the window and capping or moulding where
they meet - to help secure it in the opening, and seal
the installation against the weather.
How To Install from the Outside In
SAMPLE MANUAL

View this content as a flipbook by clicking here.