The Contractor's Guide to installing Vinyl Windows                            45                ©2022 AWDI, LLC Do not reproduce without permission
Step 1:
Remove the exterior
trim, or cut-back the
siding to expose the
mounting fin of the
old window.
Step 2:
Remove the 
fasteners holding 
in the window in
place being careful
not to disturb the
water management
(flashing) more 
than necessary.
Step 3:
After removing 
the window, cut
back the old 
flashing leaving 
two inches of 
coverage exposed
from behind the
siding.
Step 4:
Re-flash the
opening,
placing
flashing tape
around the
head and jamb sides.
Cover the 2-inch flap 
left in place from the 
old flashing.
Flash the sill to create a
sill pan effect. Place the
sill flashing over a piece 
of tapered siding to 
create drainage.
Fasten bottom 
overlap in two
places with Simplex-type
cap nails. These will cre-
ate a 1/16”-1/8” space
between the bottom trim
and the flashing to allow
drainage. (See Finish
Detail Diagram)
Remove Exterior Trim to take Fin and Frame Out
SAMPLE MANUAL

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