11.   Use construction adhesive, and make sure the screws go into joists, not just into the original plywood floor.

12.   With the construction adhesive, it is not necessary to nail every piece.

13.   You can also use construction adhesive to glue boards to a concrete wall.

14.   You can also use construction adhesive for joining, provided it is labeled by the manufacturer as for use on pressure-treated lumber.

15.   You may have to glue them in with construction adhesive.