Which side of drywall do you cut first? We've added a "Necessary cookies only" option to the cookie consent popup. ", Did he provide any authority for his position that it was properly fastened? how long do you want it to last?. In my experience floor installers are as finicky as painters. Which state is cheapest to build a house? Paper with 1/4 squares works great, as you can make 1 inch equal to 1 foot (which makes each 1/4 square equal to 3). Bulk update symbol size units from mm to map units in rule-based symbology. However, using deck screws to attach your subfloor is not necessary. Install second layer with all edges off set, leave 1/8-3/16 gape and fill with silicone. If he is booked up and needs to be elsewhere thats fine, just say so. After further discussion with the builder he told me to screw it myself if I wanted it screwed down every 6-8", or they would do it at an hourly rate of $33 plus cost of the screws. When screwing drywall sheets (4-by-8) to the studs vertically, use four screws, and start at the top. It further states, underlayment fasteners should not penetrate joists below." Many people use nails in plywood and OSB subfloor, but nails often do not create a tight connection. Do you need to pre drill holes for drywall screws? What is the proper spacing for drywall screws? Like laying out walls and joists, use two 3 screws for each 24 intersection. This thickness is most often used to repair existing drywall that needs patching. 1 1/8"-1 1/4" panels. If you go through 50-60 screws per sheet and have 30-40 sheets to do, it can be very time-consuming and back-breaking. Use 6d common nails, spaced 6" apart on edges and 12" apart in the field. 5. Choosing screws requires due diligence. When installing two layers of subfloor, is it okay to secure both layers to joists? Draw the 4'x8 sheet border in pen, and then lay out your parts using pencil, as shown below. I disagree tha they are really needed.IF YOU GLUED PROPERLY!! I've been conducting professional home inspections since 2002. Edited 6/2/2002 8:48:02 AM ET by Bob Walker. Generally, for thinner plywood (less than 1 inch thick), at least two to four clips per sheet are suggested for optimal holding strength. However, you can sink screws into the edges of three-quarter-inch plywood if you drill pilot holes and center the screws on the edge. Machine screws, but especially caps screws and bolts, can range from 1/4 inch up to 3 inches or more. Applying tape and drywall compound to the inside drywall corners gives them a smooth look. Also, you can be sure that there is no chance of the plywood splitting. Founded by Hubert Miles, Certified Master Inspector. The plywood calculator provides you with the total area size, the number of plywood sheets needed, and their total price. It just needs to help you organize the parts effectively, and to serve as reference when you cut. I assumed in a tile situation it is whatever would be allowing the subtle movements between the layers. The general rule of thumb is that the screw should enter at least half the thickness of the bottom material, e.g. So if your subfloor is 3/4 of an inch thick, any screw about 1 3/4 inches long will do the trick. Sorry if I ranting here but it seems that this is becoming a common problem for alot of the specialty trades. Using my experience, I would fasten the underlayment with adhesive and 7/16-inch crown staples every 6 inches driven with a pneumatic stapler. Unfortunately, experiencing an occasional creak is always in the offing with nails. You may need to use more screws. Adhesive will help you here, as the subfloor plywood will have voids in spots that will not hold a fastener. Screws are more suitable for the soft plywood blocks since they can be removed more easily and do not cause splintering. Your tile guy is right, and IMO it's builder's responsibility to get it where it needs to be. This total is comprised of four screws on the five middle studs and six screws on each of the two sides. I am installing natural stone tile, so I've had to reinforce the joists a bit and I'm currently working on installing a new subfloor. If this is the subfloor only and your tile guy will be installing backerboard as an underlayment over the ply, then I would defer to APA requirements. It will result in weakening of the joint and ultimately creaking of the subfloor. This is one of the most common types of construction I do in the shop attaching a sheet of 3/4 plywood to a carcass made of 3/4-thick lumber. 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. Plus, you can wipe chalk away with a damp rag and, if necessary, a little bit of sanding. To fit it all on one sheet, though, a couple of the large panels had to be turned. Also, deck screws have a coating that helps protect the screw from exterior exposure, which is not needed indoors. How should I install a plywood subfloor that will be covered by granite tiles? As a result, youll need a longer size wood screw to help secure joints at the end of boards. felt or 4-mil polyethylene and attach with 1/4" galvanized staples. A highly efficient woodstove can be a great source of supplemental heat during the coldest months. For thicker plywood (1 inch thick or more), it is recommended to use between four to eight clips per sheet for a stronger hold. Asking for help, clarification, or responding to other answers. rev2023.3.3.43278. I can confidently By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. what will sit on the floor? Whether youre reworking a cutting diagram from an existing plan or youre designing your own project, knowing how to make your own cutting diagrams gives you options. 41. 8. Costed screws offer protection from moisture which induces rusting and loosening. If you and he both understand this then he should shut up and get to work! Underlayment for 18X18 tile need to have less than an 1/8" up and down under a 3' straight edge, preferably a longer one. Use these tips to keep cables tight and straight for a professional-looking deck-railing job. Try calling the local investigative news teams. The best answers are voted up and rise to the top, Not the answer you're looking for? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. I read somewhere that I should not glue the two layers of ply together. Optionally, enter the plywood dimensions, its price, and the additional amount of material for scraps (if not, the default values will be used). Why do small African island nations perform better than African continental nations, considering democracy and human development? 1 1/8"-1 1/4" panels. Estimate the amount of plywood or OSB needed for sheathing a roof. 19/32"-1" panels. The stapler saves a lot of time. Let's say that the room has length = 6m and width = 4m. Can carbocations exist in a nonpolar solvent? Bottom line, Don't attach the 1/2 inch to the joists. Both dimensions are evenly divisible by 16, so a full panel will set neatly on the studs. How many screws do I need for 5 4 deck boards? Short story taking place on a toroidal planet or moon involving flying, How to handle a hobby that makes income in US, Linear regulator thermal information missing in datasheet. This tile setter may be a **** depending on the way he goes about doing this but his standarads are right up to snuff and the 'builder' is far from professional. You can learn more about cutting plywood using saw guides in the related topics at the bottom of the page. Fine thread screw - ideal for screwing drywall into metal. And use construction adhesive between the joist and subfloor, too. How do I align things in the following tabular environment? If it's going on a ceiling, it'll take about 36 screws. 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. If the subfloor is screwed down every 8" and THEN underlayment is an additional 1/2" and GLUED AND SCREWED..what more could one ask for???? Do you tape inside corners when Drywalling? +1, I feel like when we used to do this, we used 4" on the perimeter and 8" on the field, but we also joked that the local airport had to realign their compass when we finished a project. These illustrations show how the cutting diagram were using here can be broken down. So why not just shoot some more screws in.better safe then sorry. How do/should administrators estimate the cost of producing an online introductory mathematics class? Green River Killer. Re: plywood over deck. Related Posts Quick Answer: Can Cats Climb Plywood In such a case, screws will facilitate easy removal as youll only need to unscrew them with a drill. However, on residential jobs, the drywall on the walls is typically hung horizontally. Drywall anchors aren't required for all wall-based fastening applications. How many sheets of drywall can you hang in a day? The subfloor is nailed and glued, I am not certain as to the nail spacing. For publication by the TILE LETTER Magazine (read whole article): The 2003-2004 Tile Council of Americas (TCA) Handbook for Ceramic Tile Installation contains numerous details for a double layer wood floor system supporting ceramic tile. 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. If you're building from a kit, you should follow the manufacturer's installation instructions. The plywood cut sheet calculator is versatile and stands here to help you make decisions about: The only thing that we ask you for is to enter the length and width of the surface that you need to cover. Next, well look at some of the various top screw brands that you can use for your plywood project. The bottom will really never be seen, though, and the back wont really show because the chest will probably be against a wall or at the foot of the bed. It would be best for the plywood project to settle for the coarse threads over the fine ones. Don't use sheetrock screws, use decking screws. Then one more separates the parts named Back and Bottom.. 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. Or pick up pre-cut 2' x 4' panels of plywood, OSB or particle board. You want to choose fasteners that will not penetrate the bottom of the subfloor. no backerboard under the tile). Like I said, he's probably messed up some other stuff. Since most nails have smooth heads and shafts, they insert easily and speedily with a hammer or nail gun. How do you ensure that a red herring doesn't violate Chekhov's gun? Years ago, I was subbing roofs on condo jobs in CO and one builder in particular used the crappiest crews he could find to sub his framing out to. In my particular case, I'm building a tiny shed. By doing so, you introduce weakness into the joint. Ideally, nail down your subfloor using corrosion-resistant nails that will securely hold it in place and last a long time. By creating an account you agree to the Hunker. Hanging Drywall From the Top Down Hang drywall on the ceiling first, then the walls. Proper Orientation for Plywood Subfloor under 3/4" Hardwood, Plywood underlayment over plywood subfloor - how to secure. How many coats of paint can drywall take? Another big advantage of organizing your parts on your plywood sheet is that it makes cutting a lot easier by letting you group your cuts. Using nails without an air nailer will also prompt you to hammer them into the plywood. Perhaps I was not explicit enough. Doing that will help you eliminate waste and save money on your projects. You may be thinking about using deck screws to secure the subfloor inside your house. When working with 5/8-inch drywall panels, use 1-3/8-inch or 1-5/8-inch screws. 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. Screws per 4'x8' sheet? A tapered screw is popular due to its high tenacity under intense pressure. "Top layer" plywood subfloor fastened to decking. Decking: Fasten 5/4 decking with 21/2-inch coated screws or 12d ringshank or spiral nails. Hammering nails will destroy the soft plywood or OSB. Are you sure you want to remove the following product from the cart? Position SurePly plywood underlayment panels 1/8" to 1/4" from the walls to allow for expansion. You might need to do this at some point when you want to replace your subfloor. The median annual wage for drywall and ceiling tile installers was $48,040 in May 2021. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. not looking for an excuse to get a twelvepack and tke the rest of the day off. Settle for this model if you live in a humid area or near a salty water body. Why is there a voltage on my HDMI and coaxial cables? For more complicated shapes, see the instructions below. I'd tell the contractor to get with the program and stop using excuses. The purpose of this article is to propose specific guidelines for the orientation and placement of underlayment, including end and edge joints, beyond the rules given in the TCA Handbook, to improve the performance of double layer wood systems. Torx drive screws are US-made and improve the square drive kind. 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. So far, we have recommended shiny and golden-colored kinds of screws. One sheet = 32 ft. Such screws are ideal for drywall projects and plywood subfloors. 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. Every sample would be just shy of a full pound with 77 screws, yet go over with the addition of one more screw. A coarse thread will have thicker spirals, making them cut through the wood easier and grab on tightly. Position of Underlayment to Prevent Cracked Tile and Grout, We've added a "Necessary cookies only" option to the cookie consent popup. I agree that the simple solution is to add more screws and make the tile guys happy. 11. Inside drywall corners can develop hairline cracks over time, so it's important to do the job correctly. In addition to plating, they can also be coated with an extra layer of zinc for added protection from moisture. It's the most common choice for interior walls because they are easy to carry and hang. If youre working from a well-designed project plan, then the cutting diagram should do this for you, like the diagrams shown below. When laying out your parts on a sheet, try to organize them so items of the same/similar dimensions are aligned. If not, the default prices and sizes will be used for the calculations. Also, how flat does my subfloor/underlayment need to be? 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. Thus, driving the screws out when necessary is far easier than for the other drives. Why couldnt the tile guy just put in more screws. The face with the nailing pattern is designed to go up. 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. Named after American businessman Henry F. Phillips, the screw fits the screwdriver easily. Lean your weight against the drill as you begin driving the screw at a slow speed. It's important to keep in mind that, unlike some other construction materials, drywall screws get thicker when the numbers get higher. Learn more about Stack Overflow the company, and our products. They are also available in a variety of sizes. For utility or storage projects, appearance may not be as important. He claims that it is fine because it is glued down, not just screwed. How many coats of mud do drywall screws need? BUIC Sep 01, 2007 02:55pm #16. As the seasons change so do the temperatures inside and outside the home. Fourth unit - I walked off the job saying call me when it's ready. Learn more about Stack Overflow the company, and our products. drywall thickness weights about 60 pounds. The #8 x 1-1/4 screw is perfect for bringing these two boards together. You do not need to pre-drill drywall screws. Nail or screw 6 inch on edge and 8 inch in the field. No votes so far! Should I use coarse or fine drywall screws? When youre cutting plywood, a circular saw is a great tool to use. In the case of F150-03, the offsetting is not mentioned, but it does state, underlayment fasteners should not penetrate joists below." You can use drywall screws to screw down OSB or plywood subflooring, provided the drywall screw is a number 8 weight screw. Countertops 1/4", 1/2", 5/8" thickness Minimum 3/4" APA span-rated plywood or OSB with an Exposure 1 classification or better. how many screws per 4x8 sheet of plywood. Ultimately, staggered seams are stronger because the joints the weakest part of the wall or ceiling installation are minimized. Check the ceiling for bowed joists using a 4-ft. level. 18. 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. What is the proper spacing for drywall screws? So, having the grain run across these panels instead of along their lengths isnt a big deal, and it prevents having to purchase a second sheet to complete the project. How many sheets of drywall can you hang in a day? Typically deck screws are 2 1/2 or 3 inches in length and too long for securing subfloor. Continue with Recommended Cookies. This is a dialog window which overlays the main content of the page. The larger the tile the flatter the floor has to be. How much materials will be wasted for scrap. If you rip a 4-by-8 foot sheet of plywood in half parallel with the grain . Use about 32 drywall screws per sheet of 4-foot by 8-foot drywall installed horizontally on a wall. 3. 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