to the nailing flange in a manner that covers the nails and nail slots. Continue the bead of sealant at the jambs vertically a minimum of 8 1/2" above the head of the window to allow for bedding the top portion of the jamb flashing into sealant in the next step (figure C). Install the jamb flashing by pressing the flashing into the sealant beads at the window jambs. Extend the bottom edge of the jamb flashing approximately 1/2" short of the sill flashing edge, and extend the top edge approximately 8 1/2" -beyond the head of the window, where the head flashing will be placed next (figure D). Fasten the jamb flashing along the edges further most from the window. Apply a continuous bead of sealant adjacent to the head of the installed window. For windows with nailing flanges, the sealant should be applied to the nailing flange in a manner that covers the nails and nail slots (figure E). Install the head flashing by pressing the bottom edge of the flashing into the sealant bead previously applied across the mounting flange. Extend the ends of the head flashing approximately 10" beyond the jamb flashing at each end. Fasten the head flashing into place along the top edge (figure F). Flashing New Window Installations Refer to window manufacturer's instructions and ASTM E2112, Standard Practice for Installation of Exterior Windows, Doors and Skylights for the proper flashing installation method for the window type and wall configuration on the project. J-Channel