Installation Guide

- 6 -
Application Guide
3M
™
All Weather Flashing Tape
8067
Install the header
flashing tape
6. Install the header flashing tape: Cut a piece of 3M™ All Weather Flashing Tape
8067 a length equivalent to the frame width of the window plus 2 times the width of
the flashing tape plus 2 inches. The header flashing tape should overlap and extend
beyond the jamb flashing tapes by at least 1 inch on each side as shown in Fig. 6.
Apply the flashing tape to the top of the window over the nailing fin and directly onto
the sheathing.
Fold down
the header
flap of WRB
7. Fold down the header flap of WRB: Fold down the WRB header flap so that it
overlaps the header flashing tape as shown in Fig. 7. Trim the WRB header flap so that
it does not touch the top of the window frame. Tape the diagonal cuts in the WRB with
3M™ All Weather Flashing Tape 8067.
The flashing tape should overlap and extend
beyond the jamb flashing by at least 1".
Cut the flashing tape the frame width
of the window plus 2 times the width
of the flashing tape plus 2 inches.
Apply the flashing tape to the top of
the window over the nailing fin and
directly onto the sheathing.
Figure 6: Install the header flashing tape
Figure 7: Fold down the header flap of WRB
Fold down the WRB
header flap so it
overlaps the header
flashing tape.
Tape the diagonal
cuts in the WRB
with flashing tape.