Step 2 · Step 2: Measure the Tread Depth

Place the end of your tape measure firmly against the vertical riser at the back of a step. Extend the tape straight out over the flat part of the tread and across the rounded front lip, which we call the 'nosing.' For the most accurate measurement—and a tread that fits like a glove—it's essential to keep the tape measure flat and level. Important: Always measure the bare wood surface. Measuring on top of old carpet, padding, or glue residue will give you an incorrect reading and affect the fit of your new treads. Jot down the depth for each step.