subfloor what size screws course or fine

For the usual subfloors, 3 inches of screws are perfect. The size of the screw depends on the size and thickness of the floorboard. But a regular subfloor is good with any three-inch screw.

Full Answer

What size screw do you use for subfloor?

5/8 subfloor: A screw of 1 5/8 inches is perfect for a 5/8 inches plywood subfloor. This is an unusual size but still, the size of the screw should be chosen carefully. 1 5/8 inches should be good enough. 23/32 subfloor: A subfloor of 23/32 inches should have 1-1/4″ screws attached to them. This sized plywood floor needs careful support, so it is best to use a 1-inch screw. …

What size screws do I need for floors with 16-19 inches?

Aug 18, 2008 · For the 5/8 plywood I would use 1 1/2 screws with the. cutting nibs on the head. larry b. hurnik | Aug 17, 2008 07:34pm | #2. The planks are 3/4" thick (I had a small section I had to cut up to move an air duct and replaced that section with 3/4" Advantech OSB, and it's the same height).The boards are flat (not cupped at the ends), but I wouldn ...

Can I use deck screws for underlayment?

Dec 25, 2021 · You’ll want to use #8 1-1/2 inch wood screws spaced 8 inches apart to secure a 5/8″ OSB subfloor to the floor joist or floor truss. For 3/4 inch plywood, it would be best to step up to a 2-inch wood screw to account for the added thickness. You can also use screws to remove a squeak in the subfloor caused by the subfloor moving against the nails.

What size screws for 3/4-inch plywood?

Apr 19, 2020 · Coarse thread screws strip less when fastened to wood surfaces with less thickness as compared to Fine threads. Fine thread screws are more prone to damage than the coarse thread screws that have lesser thread engagements. Fine thread screws are best for applications with smaller, shorter and specific measurements – coarse thread screws are ...

What size screws should I use for subfloor?

Most commonly, a 3-inch screw is used. This is especially true when using a ¾ inch piece of plywood. But if you use a thicker piece of plywood, or a thinner one, the length of screw that you will want to use will be different.

What kind of screws are used 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.

Should you screw down a 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.Jul 24, 2018

How do you screw down a plywood subfloor?

You'll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it. So if your subfloor is 3/4 of an inch thick, any screw about 1 3/4 inches long will do the trick. If the plywood subfloor you're placing is 5/8 of an inch thick, you need a screw about 1 5/8 inches long.Jan 26, 2020

What screws for OSB subfloor?

You only need a #8 wood screw that is 1 1/2 inches long for 5/8 inch OSB or at most 2 inches long for 3/4 inch plywood. Also, deck screws have a coating that helps protect the screw from exterior exposure, which is not needed indoors. Deck screws will also cost more than the screws needed for your subflooring.Dec 25, 2021

Is it better to 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.Jul 13, 2018

How do you fasten subfloor to joists?

You use a heavy-duty drill to drive in the head wood screws through the subfloor underneath. You need to ensure that the screws go through the floor joists as well. You need to space the screws at least 8 inches apart.Aug 28, 2021

What is the best screw for plywood?

Xylan Flat Heads are the best plywood screws for both indoor and outdoor purposes. Due to their sturdy construction, these screws do not break easily. Be it just wood or a composite material, these screws can drive through either of them with equal ease.

How to determine the length of a screw?

The screw length is determined based on the wood thickness that you’re using for your project. 2.

What type of screws are used for wood?

Coarse-thread screws are used mainly for plywood and softwood like pine, cedar, and fir. Fine-threaded screws are used for hardwood such as oak, maple, and cherry. You must be always sure about your tools and the screws that you should be using.

What is Aysha's hobby?

Gaming aside, in her spare time, she also enjoys fishing, kayaking as well as helping her family and friends make smart purchases on the latest technology.

Can subfloors become extracurricular?

When subfloors are secured in position, the flooring can Become additional curricular, either nearly instantly or with time. If your house is afflicted by floor syndrome, then you’re able to fix this dilemma by substituting the subfloor screws with screws alternatively.

Do you own a subfloor?

Sometimes, you could well not own a subfloor–merely a slab underneath–however in most cases, homes possess some kind of subfloor in place. To get Homeowners, contractors, or renovators that are installing, replacing, or even re-securing that a subfloor, the key choice they face is close regarding the subfloor screws.