Step 3 · Step 3: Determine Your Ideal Tread Width

Now, let's measure the width. Run your tape measure from one side of the tread to the other, keeping it parallel to the back riser. If your stairs are enclosed, measure from wall to wall. If one or both sides are open, measure from the finished edge of the wood. Many homeowners love the look of a 1-inch border of exposed wood on either side of the tread, which beautifully frames the staircase. If you want this style, your final tread width will be about 2 inches less than your total measured width.