How to Install a Herringbone Floor

Screw a strip of molding or other material to a narrow length of plywood, place the fence of a circular saw against the strip, and rip the plywood to create a long cutting guide for the saw. Line up the guide over the tape and, using spacers, screw it to the subfloor where it extends past the installed flooring. Set the circular saw on the guide, and adjust the depth of the blade to a hair more than the thickness of the slats. Trim the slats along the border, as shown; do the same thing on the other three sides of the field.