Step 2 · Measure Each Stair Tread Individually

Work your way up the staircase, one step at a time. For each individual tread, use your flexible tape to measure the width across its widest point, which is usually the outer edge. Next, measure the depth from the very front of the tread (the 'nosing') to the back. Finally, use your protractor or angle finder to determine the curve angle. Taking these measurements from the same points on every step is key to achieving consistency and peace of mind.