Step 3 · Measure and Cut Stair Treads
For each stair tread, measure the width from wall to wall, and the depth from the front edge of the tread to the riser. Record these measurements accurately. If your stair treads have a bullnose (an extended, rounded front edge), measure the depth from the very front of the bullnose to the riser. Use these measurements to mark the new stair treads. Employ a table saw or circular saw to carefully cut the treads to the exact dimensions for each step. Ensure the cuts are straight and precise. Test fit each cut tread on its corresponding step to confirm it fits snugly. Make any necessary adjustments for a perfect fit.