How to Install Wainscoting

To slip stiles behind existing molding, like the horn of a window's stool, use a flush-cutting saw to cut the horn where it meets the wall. Use the thickness of the stile to guide the saw, as shown, and cut toward the casing. Use a chisel to knock out the block and clean up the notch.

Tip: If you don't have a flush-cutting saw, also called a Japanese saw, mark the thickness of the stile on the horn and cut it with a handsaw.