If there s a squeak screw a long drywall screw into the sub floor and joist where the squeak occurs.
Installing hardwood flooring with screws.
Minimum requirements are a 3 4 plywood sub floor.
These can be found at your local home center or ordered through their catalogue dept i do not recommend the use of screws for the installation of your flooring.
Remove shoe molding from the room and sweep and clean thoroughly.
Actually screws work too well at holding down the floorboards which can be a problem.
Or use screw shank nails a finish nail with grooves along its length shank.
Installing hardwood flooring with screws and plugs wood floor expert howard brickman is on the job site installing white oak hardwood floors from carlisle restoration lumber.