Flashing (Method A)
The Contractor's Guide to installing Vinyl Windows                            100              ©2022 AWDI, LLC Do not reproduce without permission
Step 3:
Once the jamb and header flashing is placed, large strips of WRB are placed in shingle style (overlapping). The bottom
piece should be tucked up under the sill flashing and bottom of the jamb flashing, as shown, to complete the basic
install. Remember to allow weepage from under the sill flashing, and to never over-tighten the mounting hardware.
Step 1:
A 6-9 inch strip
of flashing is
first applied
along the sill of
the rough open-
ing as shown.
Apply a 3/8”
bead of sealant
along the inside
face of the nail-
ing fin. Set the
window into the
rough framed
opening. Set
window with 2
fasteners in the
corner, then
adjust plumb
and square. Use
accepted fasten-
ers and with a
3/8” bead of
sealant on the
backside of the
nailing fin finish
mounting to
framing.
After the window
is set into the
opening, apply
another bead of
sealant along the
outer edge of the
nailing fin.
Do not anchor
along sill.
Step 2:
Place flashing
down the sides,
overlapping the
sill strip.
Then place a
flashing strip
across the top
overlapping the
jamb flashing.
SAMPLE MANUAL

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