Question: What Screws Should I Use For Subfloor?

How do I find joists under subfloor?

When the sound indicates a joist, probe the area by pounding a 10d finishing nail through the carpet about an inch.

The subfloor is usually 3/4 inch thick, so if you hit solid wood, it’s a joist..

Can you use screws on OSB?

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. If it does grab, it’ll likely pop the head.

Do you screw or nail plywood?

Answer: It is better to use screws on plywood instead of nails. Screws are more suitable for the soft plywood blocks since they can be removed more easily and do not cause splintering. You don’t have to worry about splitting the wood by using screws.

What is the best subfloor for a bathroom?

PlywoodPlywood as a Subfloor Material Traditionally, exterior grade plywood has been the subfloor material of choice for many bathroom flooring projects. Plywood is made by gluing alternating layers of wood veneer. CDX plywood (¾”) in particular is used often because it has a high level of resistance to moisture and humidity.

Can I put new subfloor over old subfloor?

One of the benefits of removing the old flooring is it allows you the chance to fix any loose subflooring or squeaks by re-securing the main subfloor to the floor joists prior to installing the new flooring. With all that being said though the answer is YES you can install New Wood Flooring over the old.

Do you nail or screw subfloor?

Using code-approved screws rather than nails is the best option for avoiding movement. If using nails for subfloor installation, stick with ring-shank nails; smooth nails may withdraw easier, leading to squeaks.

Which side of OSB subfloor goes up?

Answer. OSB roof panels should always be installed with the grade stamp facing into the attic and the screened surface (with the nail guide lines) facing up.

What kind of screws are used for cement board?

Cement board attached to plywood or similar underlayment will hold with only 1 1/4-inch screws; for thick or heavy metal fixtures, use 1 5/8-inch screws. In general, 1 1/2-inch galvanized nails will hold the board firmly in place.

Should I screw down subfloor?

Screws, if driven properly, prevent creaking floors. A screw firmly holds the subfloor in place, which ensures a squeak-less floor for years to come.

How many screws come in a 4×8 sheet of plywood?

82 screwsFiguring 6″ edge and 8″ inside I had calculated it to be 82 screws for one 4×8 sheet.

What screws for OSB subfloor?

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.

Will screws hold in OSB?

OSB wood panels While the two kinds of panels carry the same span rating (because they are based on strength and not thickness), nail pull and screw hold, OSB panels have several structural advantages over plywood panels: … OSB has a greater shear strength than plywood panels.

What screws should I use for plywood subfloor?

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.

What kind of plywood do you use for subflooring?

Standard plywood can be used for subfloors, but a better material is 3/4-inch tongue-and-groove plywood subflooring. The tongue-and-groove edges interlock to resist movement along the panel edges and create an overall stiffer floor.

How far apart should screws be on subfloor?

approximately 8 inchesUse 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.

Can you use deck screws for subfloor?

Deck screws are a good choice. Don’t use drywall screws; they’re prone to the heads snapping off. You can either drill pilot holes slightly larger than the screw diameter (through the thickness of the subfloor only) or use a self-drilling screw without threads on the top 3/4″-1″.

How do you screw down OSB subfloor?

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.

Can you use construction screws for subfloor?

Most construction experts use 3-inch steel screws for plywood subfloors. To find out which length of screw you’ll need, you first have to know how thick the flooring is. You’ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it.