Q: What is the best way to nail the boards down when I can not nail the tongue side? This is a repair job. My first thought was to face nail the boards. I was wondering if I can nail the boards down from the grove side? Any help will be great.
A: You can drill and nail through the bottom edge of the groove. I would also use some adhesive.
Follow up Q: Glue to the bottom of the board?
A: That’s correct.