Use OSB panels rated for the distance between the floor joists. Run a bead of construction adhesive along each joist and lay the OSB panel on the joists. Nail the panels with 10d common nails or #10, 2 1/2-inch wood screws spaced 6 inches apart along the edges and 12 inches apart in the middle.Click to see full answer. Furthermore, what screws to use for subfloor? Steel Screws The proper steel screw sizes for securing 3/4-inch plywood to the floor joists are #8, #10 and #12 screws. The number refers to the thickness of the screw. Each is available in lengths from 1 1/4 to 3 inches. Typically, the 3-inch variety is used to secure plywood subfloors.Secondly, do you nail or screw subfloor? When you use a nail gun to attach subfloor sheathing to the floor joists, the nail sometimes misses the joist. Remember, nails can pull up; screws don’t. This gives us stronger floors that will not move or squeak. can you use screws on OSB? Screws – and DO NOT use drywall screws. Use coarse thread coated deck screws 1 5/8″. OSB will pop the head off a drywall screw, even with a drywall screw bit on the drill. And the fine thread on a drywall screw will not hold in a joist – it will spin and strip the threads when the head hits the OSB.Can you use screws on subfloor?A thicker subfloor takes a 3-inch screw. Use a heavy-duty drill to drive Phillips head wood screws through the subfloor into the floor joists. Drive the screws approximately 8 inches apart. To make the job easier for you and the drill, we suggest that you pre-drill holes before screwing the subfloor down.

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