Step 3 · Position First Carpet Tread

Take the first carpet tread and lay it on the stair tread. Align the center of the carpet tread with the center line you marked on the stair tread. Ensure that the front edge of the carpet tread is slightly behind the nosing of the stair tread, or as per the manufacturer's recommendation, and that the sides are equidistant from the edges of the stair tread. Adjust until it is perfectly centered.