Flashing Against Existing Panel Siding

Flush the end of the flashing length with the wall corner and secure the flashing to the framing with an 8d nail at each wall stud.

Flashing against existing panel siding.

It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc. Install the flashing before you finish the top of the brick wall as the flashing must go behind the siding as well as behind and under the top row of bricks that angle outward to cover the top. On a wall to be covered with wood cement board vinyl or metal. Using a metal j flashing between these types of transitions provides a barrier between siding and transitions that protects against water intrusion.

Hold a panel at the correct height and against a window or other obstruction to mark for the horizontal part s of a cutout. Unless you re careful step flashing can allow water from the roof to slip behind the gutter and get behind the siding and even the housewrap. Again allow for a 1 4 inch gap. If the shingle already has flashing on it the kickout flashing has to slip beneath it and you ll have to loosen or remove siding to do this.

In certain instances flashing may need to be installed on the exterior of siding. But the j cap also creates a consistent line. A key part of my approach is using a special piece of flashing at this vulnerable intersection called kickout flashing or kickout diverter. Begin at either end of the wall and set the level middle section of the z flashing onto the top edge of the siding panel with the wider flange upward and against the wall framing.

Install the kickout flashing underneath the first shingle photo 1. Flashing is a strip of metal usually aluminum about 8 inches long and bent at 90 degrees with each side at least 5 inches wide. Cut 1 4 inch above the flashing or window.