Step 1 · Precisely Measure the Depth Over Your Bullnose

To begin, position your straightedge or tape measure flat against the top of your bullnose tread. Carefully extend your measurement from the vertical face of the back riser, *over* the rounded front edge, all the way to the absolute front lip of the tread. This isn't just about the flat surface; it’s about capturing the *entire* projection of your step. This precise measurement is key for a custom-made fit that truly elevates your staircase.