For utility or storage projects, appearance may not be as important. What is a cheaper alternative to Sheetrock? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If you are hanging a shelf that will have books on it, this is the perfect hardware. Due to their structure, they can easily penetrate the plywood without requiring excessive force. Also, with the WoodPro fasteners, you are not likely to deal with a rusting problem at any instance. if figured for a horizontal diaphram then the answer would depend on your lateral calculationsthen you may have a different nailing pattern and stagger but 6 and 12 is generally acceptable in most conditions. I don't know if that's the case here with tile (what kind of tile?) And that can lead to drilling holes in the wrong places, assemblies that go together wrong, and extra trips and expense to get more materials. Generally, for thinner plywood (less than 1 inch thick), at least two to four clips per sheet are suggested for optimal holding strength. It doesn't matter what surface you need to cover with plywood - it might be a floor or something entirely different. The stapler saves a lot of time. Since most nails have smooth heads and shafts, they insert easily and speedily with a hammer or nail gun. 28. Learn more about Stack Overflow the company, and our products. Of course, this all assumes you haven't been a jerk, yourself, in dealing with the contractor up to now! How much weight can 4 screws hold in drywall? I agree totally. Construction-grade plywood is now an affordable residential finish flooring. There are a few times, though, that its ok to break this rule. I couldn't use whole 4x8's so I used even more screws because of the extra edges and I'm no mathmetician so my calculations could be off, but it felt like I used a couple . It only takes a minute to sign up. Here are some of the reasons why screws are better than nails: A plywood floor ought to be quiet at all times. Hopefully this clears things up. Such screws are ideal for drywall projects and plywood subfloors. And use construction adhesive between the joist and subfloor, too. 1/2-Inch Drywall: Most drywall measures 1/2-inch thick. In general, paper drywall tape is slightly stronger and more versatile, but mesh tape has a more manageable learning curve and better moisture resistance. Normal application with just 3/4" I would squirt down some construction adhesive to the joists, lay the 3/4" layer and screw 8" on edges and 12" in the middle. You can learn more about cutting plywood using saw guides in the related topics at the bottom of the page. Upvote. The APA (American Plywood Association) requires their products to be screwed/nailed every 6" in the field, and every 3" to 4" on the edges and seams. For the 1/2" underlayment, ideally, you want to screw every 6" all across the panel. When hanging drywall, always hang the ceiling first. I read somewhere that I should not glue the two layers of ply together. Plywood and OSB are two of the common materials in subfloor construction. Probably have to tear'em out down to the joists. Should you drywall ceiling or walls first? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. When determining what size screws for drywall you need, take into account the thickness of the drywall panels. ". how many screws per 4x8 sheet of plywood. For this plywood layout, it makes sense to start with a crosscut at the dimension marked for the Side width. 23. When installing drywall on a ceiling, professionals generally recommend using a screw every 12 inches. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Thus, youll complete your project in no time while working with these screws. All edges of all sheets of drywall must land on a solid surface such as a stud. This helps you cut more effectively, and it can help you use all of the sheet. When hanging drywall, always hang the ceiling first. So if your subfloor is 3/4 of an inch thick, any screw about 1 3/4 inches long will do the trick. Nails are often preferred for structural joining, including framing walls, because they are more flexible under pressure, whereas screws can snap. The second sheet will allow for ever so little movement between the sheets and not transfer total movement from the joisting through to your final flooring. If youre working from a well-designed project plan, then the cutting diagram should do this for you, like the diagrams shown below. Perhaps I was not explicit enough. Nonetheless, if you are looking for an extra tight joint, the drive will deliver precisely that. How would "dark matter", subject only to gravity, behave? The face with the nailing pattern is designed to go up. When screwing drywall into wall studs set 16 inches on center, professionals recommend 16 inches of space between the screws. Named after American businessman Henry F. Phillips, the screw fits the screwdriver easily. The underlayment will be Ditra. A great tip is to mark each part with its name. 1 1/2" - 2" screws will work fine. Screws per 4'x8' sheet? A jerk contractor who won't make a small effort to keep a client (and subcontractor happy) strikes me as the sort who might have a line item in his bid for helping the local inspector make some payment on the new boat. Draw the 4x8 sheet border in pen, and then lay out your parts using pencil, as shown below. Its bold, easy to see, and available in many colors. Example: You measure your roof and calculate the sheet length and quantity required are 3m. You can use drywall screws to screw down OSB or plywood subflooring, provided the drywall screw is a number 8 weight screw. After multiple random samples I found that there were 77 screws per pound. Thus, exerting extra torque beyond a particular threshold will counter the drivers movement with the Philips design. Answer: It is better to use screws on plywood instead of nails. rev2023.3.3.43278. Is Half inch drywall actually 1/2 inch thick? The best answers are voted up and rise to the top, Not the answer you're looking for? Plywood sheets weigh up to 63 lbs, with most standard-sized panels weighing around 42 lbs. Selecting the Correct Screw and Using it Properly Screw Selection Chart Plywood Thickness Screw Length 3/4 #8 1-1/2 5/8 #8 1-1/4 1/2 #6 1-1/4. If he installs over substandard prep work it means that he has accepted it as OK and he is then liable for damages due to someone elses sloppy work if there is a failure. 19/32"-1" panels. If you and he both understand this then he should shut up and get to work! I disagree tha they are really needed.IF YOU GLUED PROPERLY!! Why couldnt the tile guy just put in more screws. Therefore, a #8 drywall screw is thicker than a #6. How to properly install tongue and groove plywood subfloor? Why does it seem like I am losing IP addresses after subnetting with the subnet mask of 255.255.255.192/26? Radial axis transformation in polar kernel density estimate. Question: What Thickness Plywood For Climbing Wall, Question: How To Fix Sunglasses Missing Screw, Quick Answer: How To Remove Screws From Stove Doors. Check out 22 similar home and garden calculators , Plywood sheets - an example of calculations, Whether you should buy a cheaper type of plywood or not; and. It's the most common choice for interior walls because they are easy to carry and hang. Should you drywall ceiling or walls first? Conclusion The chest wouldnt look right if the grain ran across the front, top, or sides instead of along their lengths. The general rule of thumb is that the screw should enter at least half the thickness of the bottom material, e.g. Yesterday, when the tile installers arrived at the site they found that the 1/2 plywood underlayment (over 3/4 advantech OSB) had not been sufficiently screwed down. The farthest range (using a laser) was 1/4" from lowest point to highest point on the joists. why is lagos jewelry so expensive / spongebob friendships / how many screws per 4x8 sheet of plywood. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. In my experience floor installers are as finicky as painters. Studs offer support for screws as well as the objects with which they are used. Screws create stronger joints and are also less destructive. They help you keep your saw moving straight and accurately. However, on residential jobs, the drywall on the walls is typically hung horizontally. 4. Use 10d common or 8d deformed nails, spaced 6" apart on edges and 12" apart in the field. While screws are better fasteners when grip strength is needed and nails the best fastener for when shear strength is needed, either one will work in most situations. 42. Screws have the added benefit of not backing out and causing floor creaks when walking on the floor. There are also other critical considerations, such as tapered or not. 22. Screw Length When choosing a screw length it's important to remember that the nail should always be three times as long as the thickness of the material in which it will be driven into. As the screws bite into the wood, they provide some unachievable torque from using nails. Proper Orientation for Plywood Subfloor under 3/4" Hardwood. This allows for floor and wall expansion without cracking the drywall. This pilot hole should be deep enough so that it penetrates the wood a distance of about one-half to two-thirds of the screw's threaded length. How to use Slater Type Orbitals as a basis functions in matrix method correctly? If not, the default prices and sizes will be used for the calculations. What size screw should I use for 1/2 drywall? Their flat head means that the screw sinks flat. Does XPS+OSB subfloor need to be anchored? Which side of drywall do you cut first? Finally, sometimes you may need to change things up to maximize your sheets. 30. He has refused to screw the underlayment as the installers have requested. Every sample would be just shy of a full pound with 77 screws, yet go over with the addition of one more screw. Can I use drywall screws without anchors? As you move along the piece, put in a screw every 12 inches. So, youll need 12 screws down the 8-foot length of OSB or plywood. Moving down from those screws, set a screw every 16 inches. If you use adhesive for the underlayment, you can get away with fasteners every 8" using ring shanked nails. Do you need to pre drill holes for drywall screws? Cover base with USG Durock Brand Tile Membrane, 15 lb. My main question here is about how to secure to the joists. I would do the same as the tile guys, and refuse to install my products on substandard substrate. There are many types of screws for plywood and OSB subfloor. These illustrations show how the cutting diagram were using here can be broken down. But with the many types of screws, what screws are best to use on subflooring? How Do You Hang Drywall on Walls: Vertical or Horizontal? [CP_CALCULATED_FIELDS id="30] I got a good method now, cut it up in squares, long crowbar pry up, get 2x4 under edgeways, block under and stomp underlayment goes flying, hit's helper in the face. say that I expect to be a life-long subscriber." Even seasoned builders will use screws when a nail would have been better simply because it's easier to remove a screw in case of a mess-up. It also aids in stress distribution which is paramount for a healthy joint. See our nt. Screws in wall edges should be spaced about eight inches apart. Hence, there is the risk of the screw head breaking. I'm not sure what the relevant units are either. While the Robertson features four contact points, the Torx has 6. All Rights Reserved. How do/should administrators estimate the cost of producing an online introductory mathematics class? dermatologist recommended skin care routine for 20s. Start by drilling a hole in the drywall that is about the same diameter as the anchor. In your case, you need the underlayment to prevent deflection along the edges of the subfloor between the joists. drywall thickness weights about 60 pounds. There are two basic ways to go: remove the existing flooring (e.g., wood or vinyl) and then refinish the plywood sub-floor, or install an entirely new plywood, cut into squares, planks, etc., to form a custom design onto an existing floor. How many screws per 4x8 sheet of plywood? If you arent using these standard sizes, use an online deck calculator to determine how many youll need. This simple sub floor materials calculator will provide you with the lineal feet of floor joist needed, the number of sheaths to cover the floor and how much glue and how many screws it takes to attach the sheathing to the joist. They are sturdy and relatively cheaper than the old-fashioned tapered screws. 2023 The Taunton Press, Inc. All rights reserved. Rather than start with a blank page, draw your cutting diagram on graph paper. I use the term "underlayment" to mean a layer above the subfloor, but not the finished floor. If there's a stud directly behind the wall, for instance, you probably won't need to use them. Screws are better for a quality subfloor job than nails. The head is countersunk and features a concave convention to facilitate easy sinking into the plywood. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. . I agree that the simple solution is to add more screws and make the tile guys happy. TroutMullins | Posted in Construction Techniques on February 9, 2009 07:40am. The coating is a top-quality stainless steel screw built to withstand moisture without rusting. Without enough space when this happens, you'll get cracks. 11. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? how is the subfloor structured? what will sit on the floor? Hunker may earn compensation through affiliate links in this story. When your laying out parts on your cutting diagram, its important to remember that the wood grain runs lengthwise on a plywood sheet. With an air nailer, you can drive in multiple nails at one instance. Sometimes in the future, you may want to remove the board or replace some parts. We have enlisted several vital considerations to make when choosing plywood screws. Doing that will help you eliminate waste and save money on your projects. Another upside is that it does not require drilling holes. Drywall screws, however, shouldn't be used for subfloors, as they aren't strong enough and tend to snap off when used in this application. You dont have to worry about splitting the wood by using screws. No matter which way you choose, if you spend a considerable amount of time and pay attention to detail, with proper conservation against mechanical abrasion, you can create a brilliant, one-of-a-kind floor. The other factor is the screws diameter, or gauge. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What type of screw should I use? Also, since you will be using Ditra, make sure to stick with their guidelines for warranty purposes. The calculation is based on that the Plywood or OSB (Oriented Strand Board) sheets are of a 4' x 8' size. This total is comprised of four screws on the five middle studs and . However, if you are installing an extra layer of plywood over an existing subfloor, you will need to screw the new plywood down every 4-6 inches. ", Did he tell you to screw it yourself or was more like "screw you? Therefore, working on a tight budget has a natural propensity to opt for nails over screws. However, using deck screws to attach your subfloor is not necessary. Is this incorrect? Deck screws will also cost more than the screws needed for your subflooring. Do you sand between first and second coat of drywall? It comes down to personal preference: Use the tape you're most comfortable with. This is interesting, but hard to understand; would you add a few sentences and make your post clearer? BUIC Sep 01, 2007 02:55pm #16. We and our partners use cookies to Store and/or access information on a device. Because drywall is too weak to hang things from, a drywall anchor is necessary, explains Matt Michaels, a spokesman for Lowe's Home Improvement in Charlotte, NC. rev2023.3.3.43278. In all my years of carpentry, the first layer over the joists has been subfloor. As a contractor in Tennessee I require the 1/2" plywood be stapled to the advantech at 4" oc with 1 1/2" staples. How do you ensure that a red herring doesn't violate Chekhov's gun? How long should drywall screws be for 1/2 inch drywall? but how tough can it be to do it right and move onsheesh! When working with 1/2-inch drywall panels, use 1-1/4 or 1-3/8-inch nails or screws. That's if the panel is going on a wall. Stanmdards tile setters contract calls for the installer to inspect the substrate to see that it is prepared to standards of the xxx association and notify the responsible party if it is not right. If youre using a plywood cutting diagram that isnt arranged effectively, you may want to make your own. What is this?Sep 3, 2020. One of the best ways to get better at working with plywood is to learn to create your own cutting diagrams. How do I align things in the following tabular environment? Also, they feature a sharp end which makes them ideal for self-drilling. Should I use number 6 or number 8 drywall screws? Sirome is a website that writes about many topics of interest to you, a blog that shares knowledge and insights useful to everyone in many fields. So far, we have recommended shiny and golden-colored kinds of screws. You want to choose fasteners that will not penetrate the bottom of the subfloor. Connect and share knowledge within a single location that is structured and easy to search. Keep a 1/8-inch space between sheets during installation to keep this from happening. So what causes drywall screw pops, cracks, and nail pops and will it ever stop? The subfloor is 3/4" plywood with 1/2" plywood on top of it. For sure, we will scrap some sheets. I just nail it off and shingle, then mention it casually to him that I had done him a favor. It's important to keep in mind that, unlike some other construction materials, drywall screws get thicker when the numbers get higher. Thus, for many people, it is the most convenient option. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. So, for covering that surface, taking into account the scraps, we will need number of plywood sheets = (total_area_to_cover + (total_area_to_cover waste_factor))/plywood_sheet_area = 102. Manage Settings How many coats of paint can drywall take? Founded by Hubert Miles, Certified Master Inspector. Costed screws offer protection from moisture which induces rusting and loosening. If you are not sure how to use the plywood calculator, take a look at a step-by-step example. You also need to pay attention to the head of the screw as its a vital determinant of the final outlook of the plywood project. Can You Use drywall screws to screw down a subfloor? How many coats of mud do drywall screws need? In addition to plating, they can also be coated with an extra layer of zinc for added protection from moisture. The model has a dull luster which is due to the xylan coating. This website uses first party and third party cookies to improve your experience and anonymously track site visits. Vinyl tile installation - remove or install on top of existing vinyl? The smaller the tile, the less critical the flatness of the floor needs to be. Which state is cheapest to build a house? Hello, and welcome to Stack Exchange. Can You Use drywall screws to screw down a subfloor? Using my experience, I would fasten the underlayment with adhesive and 7/16-inch crown staples every 6 inches driven with a pneumatic stapler. An example of data being processed may be a unique identifier stored in a cookie. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. On the off chance that your rooftop zone is 1,600 square feet, 1,600 separated by 32 will mean you need around 50 sheets to cover the rooftop. When installing plywood subflooring, you typically screw the sheets down every 12 inches along the edges and every 6-8 inches in the field. Correct way to attach 3 layers of subfloor? If your wall has distinct crevices, cracks, or textured areas, or if your brand of drywall mud isn't offering enough coverage, you may have to do a couple of additional coats of compound. Now, its time to cut the individual parts to final size. Less snarky commentary would improve this answer. This is a dialog window which overlays the main content of the page. Nails are often preferred for large projects, like house framing and installing hardwood floors, because they are typically stronger and less expensive than screws. The APA (American Plywood Association) requires their products to be screwed/nailed every 6" in the field, and every 3" to 4" on the edges and seams. They possess a sharp end that seamlessly drives into the wood without the need to apply excessive force. Choosing the right drywall screw Most common 1-1/4: Use 1-1/4 drywall screws to secure 1/2 drywall installed on wood-stud walls. This is the hardest drywall to hang, so get a partner and go slow. Therefore, they firmly hold into the plywood or OSB fabric, leaving no room for looseness. The material is hard and creates tight joints, thus the immense popularity in plywood subfloor projects. Check the ceiling for bowed joists using a 4-ft. level. We've added a "Necessary cookies only" option to the cookie consent popup. Making statements based on opinion; back them up with references or personal experience. But maybe this tile setter has done [lenty of work behind this builder before and is sick of doing his work for him. 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. This pilot hole should be deep enough so that it penetrates the wood a distance of about one-half to two-thirds of the screws threaded length. 1. Inside drywall corners can develop hairline cracks over time, so it's important to do the job correctly. 24. Self Tapping Screw Gauge (g) Size (mm) 4. Youll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it. If the plywood is quite dense in thickness, you can use a number 8 weight drywall screw. 27. Note that there are different types of threads, but in our case, we are only interested in the roughness or the smoothness bit. The number of screws is the same whether you're installing the panel vertically, meaning the installed panel looks 8 feet tall by 4 feet wide, or horizontally, in which the panel is 4 feet tall by 8 feet wide. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. How many screws do I need for 5 4 deck boards? Re: plywood over deck. Asking for help, clarification, or responding to other answers. Oh, yeah, conside hiring a good home inspector or another contractor to go through it ASAP. Give each of the screws about 16 inches apart from one another. To do that, it really comes down to effectively laying out the parts, and then cutting them efficiently. The consent submitted will only be used for data processing originating from this website. If you are planning to countersink the screw head, a third hole, equal to the diameter of the head, will be needed at the surface. It figures how many pieces long, then how many wide. Screws are a great alternative that you can easily remove, but they are not as sturdy. 38. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. The thicknesses of the subfloor and underlayment are given in each case. In my particular case, I'm building a tiny shed. How many screws do I need for a 4x8 sheet of drywall? Now, check out how many plywood sheets we need for our flooring and how much the material will cost. If you have any questions or comments please, Exterior Wall Sheathing + Cost Calculator, Plywood or OSB Sheathing Cost Comparing Calculator, Plywood Sheathing # of Sheets for Wall or Floor Calculator, Stud Length Increase - Gable Wall Framing, Wall Section, Stud and Plate Cost (Metric). Our wallpaper calculator and this flooring calculator are other tools for similar projects that can help you estimate the amount of materials you will need and their costs. These screws are popular in woodwork projects primarily due to their reliability, durability, and ease of use. The median annual wage for tapers was $61,080 in May 2021. Use subfloor adhesive, and screw 8" at edges, 12" in field. How many 4 x 8 sheets of plywood do I need? Here's five tips: First, do not use too many screws. They are also available in a variety of sizes. To fit it all on one sheet, though, a couple of the large panels had to be turned. According to Table R602.3 (1) of International Residential Code (IRC), subfloor fastener schedule is as follows: 3/8"-1/2" panels.