Step 2 · Step 2: Measure Individual Tread Depth

Now, let's measure the depth (the front-to-back distance) of each tread, one at a time. Place the end of your tape measure right up against the riser at the back. Pull the tape straight and flat across the surface until you reach the edge of the stair's 'nosing' (the slight overhang at the front). It's critical that your tape measure is level and not measuring over any old carpet remnants or adhesive, as that can throw off your measurement and compromise the fit. Write down this depth measurement before moving to the next step.