How to Install a Herringbone Floor

You'll need to draw parallel working lines on either side of the centerline to align the corners of each slat as you place it. Use a rafter square to mark a 45-degree angle from one corner of a slat, as shown, for your first working line. To get the distance to the second working line, draw a line from the opposite corner to intersect the first line. Now make a line from the intersection of the T, perpendicular to the edge of the slat. From that point on the edge, draw a line parallel with the top of the T to represent the centerline.