With patience and attention to detail, installing a new wooden floor can be an easy home improvement project.
Step 11: Set the second course of floorboards. Set up and nail into place the second course of floorboards. Just as with the first course, this second course will be "blind-nailed" by hand. Drill pilot holes at roughly a 45-degree angle into the tongue of the boards and drive 8-penny finishing nails into each hole. Remember to countersink each nail with a nail set. Use a nail set to countersink each nail.