I'm sure there is a reason why most people recommend adding plywood on top of plank subfloor. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! First, let me say that I am so happy that your plan worked marvelously. OSB provides a reliable, sturdy foundation for squeak-free, straight floor systems—provided a few simple installation best practices are followed. Or do I need to affix them together? site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. What would an agrarian society need with bio-circuitry? Plywood panels should be placed with 1/8” gaps between sheets and a ¾” minimum … When installing 1/2" CDX plywood over an OSB or plywood subfloor, it is not necessary to staple, glue, and screw. We shared the day with a dozen volunteers, working primarily on structural components of the house, including installing floor joists, installing a 3/4 inch plywood […] We're installing an engineered wood flooring in a room that already has a plywood subfloor. Use 1 5/8-inch screws for 1/2-inch backer board. This means that when you measure 2 feet, the center of your 1×4 should be on the 2 foot mark. Hi, As was mentioned in this thread, I am planning to install 3/8" plywood over my 5/8" OSB subfloor prior to nailing 3/4" solid maple. Temporal nearest neighbour analysis in QGIS. The engineered flooring will be 1/4" shy of the height of the hardwood in the other rooms, so I'd like to make up that difference underneath. Subfloor Installation Equipment Allowance Job related costs of specialty equipment used for job quality and efficiency, including: Pneumatic framing nailer, 12" miter saw and 3 1/4" electric planer. If someone had purchased some stocks prior to leaving California, then sold these stocks outside California, do they owe any tax to California? Prison planet book where the protagonist is given a quota to commit one murder a week. MAINTENANCE WARNING: Possible downtime early morning Dec 2, 4, and 9 UTC…, “Question closed” notifications experiment results and graduation. If the latter, would some 1/2" brads be enough? About the only time you add 1/4" is for the application of sheet vinyl, etc. In construction, builders apply plywood underlayment to the floor framing of a house as the surface for the subfloor. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How to prepare my floor to install engineered hardwood? What is the meaning of "lay by the heels"? Plywood panels should be placed with 1/8” gaps between sheets. Install SurePly ® plywood underlayment over a clean, dry, level, original sound structural subfloor, or existing floor. I don't understand why it's being engineered vs. not engineered has any impact on the attachment of final flooring? It is better to attach luan plywood over the sub floor with ring shank nails. Update: We recommend using 3/8″ or 1/3″ plywood for the subfloor. If I go the 1/4" plywood route, what kind of connection do I need between the two subfloors? Plus the stapling was much faster. It only takes a minute to sign up. When nailed through the old subfloor and into the joists, the new subfloor can help to reduce floor bounce. Why did the apple explode into cleanly divided halves when spun really fast? Do I need to glue and screw? Thoroughly scrape, sweep, and vacuum the entire surface and strip any wax from the existing vinyl. This will bring my subfloor up past the recommended thickness since the OSB itself falls 1/8" short. Two avenues: leave the underlayment off and deal with a 1/4" transition. Thanks for the additional input! Figuring out from a map which direction is downstream for a river? It is very versatile. In addition, you’ll find that steel screws come in a number of different lengths. I'm just trying to understand. For many years, the standard option was lauan plywood, also called Philippine mahogany or luan plywood, which is made with an inexpensive tropical hardwood, and therein lies its problem. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. All you you are attempting to do is add more rigidity to the subfloor and supply a superior nailing base. Cover the shimmed subfloor with 3/8-inch plywood to create a flat, level surface. *Help quick. Have you considered using cork as an underlayment? plywood or 1×4 to the undersides of the exposed joist ends. Consumables extra. Next week end I will attach my luan floor to the current subfloor of plywood. Stapling down with 15 gauge 1&1/2" legged staples with 1/2" crowns alone is sufficient, as long as use use lots of staples. Use 1 1/4-inch screws for 1/4-inch backerboard. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Make sure you predrill the hole through the 1/4 inch plywood, use a bit the same diameter as the outside thread of the screw. 3. Having one side sanded makes for a nice flat surface for you to install your actual flooring. My original thought was to use 1/4" XPS but that seems like it … Asking for help, clarification, or responding to other answers. JavaScript is disabled. Just enough screws to keep them in place, mind you, no need to go overboard. NOT going overboard is what leads to squeaky, shifting sub-floors that make for a shoddy looking finished product. Daily rental. If you’re planning to remodel or just add new flooring to a room, consider adding a layer of 3⁄ 4-in. Does XPS+OSB subfloor need to be anchored? If you want to attach drywall to the ceiling later, you’ll have to install strips of 3/4-in. Glue and screw - 1/4 bead of glue distributed evenly over each board, screws on a 1 foot grid. Is it important for an ethical hacker to know the C language in-depth nowadays? When installing vinyl tiles over an existing vinyl tile hallway. To learn more, see our tips on writing great answers. Each section should have at lease two support pieces. This plywood underlayment provides the base platform for the flooring finish material. Part of my reason for stapling instead of screwing was to avoid hitting screw heads when I nail the oak flooring down. The flooring can be laid parallel to floor joists, but you may need to add a 1/2-inch layer of plywood diagonally or perpendicularly to the joists, or install a brace between the joists. Most plywood underlayment is about 1/4 inch thick and has square edges and a smooth, knot-free top face. We're installing an engineered wood flooring in a room that already has a plywood subfloor. It worked perfectly! Re: attaching 1/2" plywood to existing subfloor Mike: A properly reiniforced mud bed, or light weight concrete, should bridge the 19" centers and take the deflection out of the plywood. I completed the project before I saw your response, but all went well. How to effectively defeat an alien "infection"? After there are 1×4’s every 2 feet across the bus, go back and add 1×4’s horizontally. Making statements based on opinion; back them up with references or personal experience. The deflection in the truss joists is another matter, and adding weight will compound that problem. Should I use 1/2" or 5/8" plywood as a subfloor over my car plank. It is fastened to the subfloor and sits below the finished floor, providing a suitable base that is as smooth and flat as possible. Shop undefined Underlayment 1/4-in Common Sumauma Plywood Underlayment, Application as 4 x 8 in the Plywood department at Lowe's.com. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. that's an interesting option! nally laid 1x planks instead of plywood or OSB (oriented strand board). I also used red rosin paper between the 1/4" underlay and the oak flooring, in accordance with standard practice. Exactly, engineered wood floors are often floating floors and don't need to be nailed down. What type of subfloor should be used for on grade for nail down engineered hardwood? Short answer, "Yes, definitely; screw, don't nail.". I believe they make them in various thicknesses, including 1/4". If the subfloor is plywood, orient the underlayment in the opposite orientation of the first layer of plywood. Be sure the construction adhesive you use is recommended for subfloors. Typically, you use 3/4-inch plywood, which has a tongue-and … These panels have Laying Plywood Over Particleboard. Thanks for contributing an answer to Home Improvement Stack Exchange! My original thought was to use 1/4" XPS but that seems like it may not work. I could also pull the hardwood floor and put down a 1/2' sheet of plywood and 1/4" CBU then tile, but what would be the best way to deal with the wood/concrete interface? The reason I want to add the 1/4" plywood underlay is to raise the level of the floor to match the level of the dining room and bedroom floors, which are adjacent. It does not add much strength nor much nail or staple holding power. Or will I have problems nailing down the oak floor with standard 2" cleats, given the extra thickness added by the underlay? The dining and bedroom floors are higher because they have subfloor + 3/4" pine + 5/16" oak. But if you're determined to get them to match up, then 1/4" luann board will do nicely. Leave between a 1/4- to 1/2-inch gap between the boards and the walls so that there is room for expansion. Do not use any adhesive beneath SurePly ® plywood underlayment. If the subfloor is wood plank, orient the plywood grain at … Also how far apart should my screws be when installing the plywood. I'm new to chess-what should be done here to win the game? Flooring underlayment comes in a variety of different forms, ranging from 1/4-inch plywood to cement board to carpet padding or foam material. Query to update one column of a table based on a column of a different table. By putting these every 2 feet, 4×8 sheets of plywood will end on the center mark of each furring strip. joists are currently covered with a 5/8" plywood subfloor. Can I just float the 1/4" on top? I am leaning toward removing the hard wood floors and adding 1/2" ply and 1/4 cement board. The five plys make it stronger than typical 3-ply sheets at this thickness. The 16" o.c. Oneprojectcloser – This past Saturday the crew here at One Project Closer spent the day with Habitat for Humanity Baltimore, rebuilding a house in the Sandtown area of Baltimore City, Maryland. The new oak floor seems to be secure, with no creaking when I walk on it. For a better experience, please enable JavaScript in your browser before proceeding. According to Setting Tile (Page 81), I should provide blocking between the joists for plywood sheet ends. The key to a beautiful, long-lasting hardwood or laminate floor is a well-prepared subfloor. The pilot hole is … I'll need to look into that. 134 square feet: $79.10: $91.01 : Unused Minimum Labor This 4x8 sheet of Sumauma plywood is perfect for underlayment, paneling, millwork, furniture, shelving and cabinetry. When you’re installing an interior subfloor using 3/4-inch plywood, you’re going to want screws that are labeled #8, #10, or #12. Since it's engineered, cork won't interfere with the attachment of the wood flooring. Have any other US presidents used that tiny table? I plan to adhere, with thinset, another 5/8" or 3/4" layer of plywood along with a waterproofing membrane. I was not at all concerned about grab of the nails going thru the plybead to the substrate, I install the underlayment with regular 1 1/4" coarse threaded drywall screws, I've used this also as ceiling, eave sheathing, & walls. How to highlight "risky" action by its icon, and make it stand out from other icons? It's always nice when things work out. If you are using 1/4 inch plywood, and you are going through 3/4 inch subfloor, I would go with a 1-1/2 to 2 inch screw. We used four sanded 5-ply 4'x8' 1/2" plywood sheets for our subfloor. 4) Flatness: Ensure the subfloor is flat to the recommended tolerances for the flooring you are installing. I think he means it's a floating floor (because it's an engineered floor) so don't have to worry about glue/nails. Add 1/2" plywood, then the flooring and deal with a 1/4" transition. 1/4" underlayment for hardwoods is not the norm. glue/nail down wood flooring installation: any disadvantages for click-lock? What about using a cork underlayment instead of luann? Lay the second layer perpendicular or at 45 degree angle to the first. A beautiful floor starts with a stable subfloor. These numbers indicate the diameter or thickness of the screws. Is it considered offensive to address one's seniors by name in the US? Solution C: Add a … How to fix plywood subfloor butt joint that is off by 1/8" before installing hardwood flooring, What is this subfloor, and do I need a wood underlayment for hardwood, Smoothing OSB subfloor after hardwood and glue removal. I ended up using cork. Helping You to Do It Yourself! Thanks for the input. Installing the subfloor was just like installing the Reflectix. Depending on the existing floor if has 1/4" Masonite+1/8" vinyl tile on top of that I will add 1/4" laun plywood + 1/8" vinyl tiles. Do this by multiplying the room’s length by its width. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. If your home has particleboard subfloors instead of plywood subfloors, you may want the added durability plywood has to offer. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Definitely not brads. Before you install your plywood subfloor, first calculate the room’s square footage to find out how much flooring you’ll need to buy. IF you decide to do this, bear in mind that it is only for spacing and will not add any strength to the subflooring. … Is it a good idea to put 1/4" XPS under engineered floors? Is it okay to add 1/4" underlay between 7/8" solid plank subfloor and reclaimed 3/4" solid oak flooring? The staples seemed to hold very well in the subfloor. What do I need to do to raise a subfloor? You could simply install a transition piece between the two rooms. rev 2020.11.30.38081, The best answers are voted up and rise to the top, Home Improvement Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, I'd screw, not glue. Plus it'd give a nice sound dampening effect. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I used the Home Depot 1/4" underlay that you described, but fastened it with 18-gauge 1/4" crown staples 1" long, driven by a pneumatic staple gun. The plywood is thin, cutting down on our overall weight. As I didn't think I would make it through some five to six hunbred screws, I bought a nail gun that shoots ring shanked nails. So the direct answer to your question -- Plywood is better than OSB, and more expensive. Can Spiritomb be encountered without a Nintendo Online account? screwing down some luann is fine, a layer of red rosin paper between layers will also avoid squeaks. The plywood is well attached but rough. Drive screws every 8 inches around the perimeter of each board, 1/2-inch from the edges and 2 inches from the corners. It typically comes in 4 x 8-foot sheets. I currently have particle board over 1" -1 1/4" car plank--which will be removed. The purpose is only to raise the floor slightly, to match the level of the adjoining floors -- not for strength. How to prevent acrylic or polycarbonate sheets from bending? Walk gently on the panels as you begin to screw the backer board into the subfloor using special backer board screws. Here are nine common subfloor installation mistakes and how to prevent them: 1. Structural SubFloor Preparation. Edge gluing tongue and groove (non locking) engineered hardwood to make floating floor over existing varnished chamfered-edge hardwood flooring. I would put down some adhesive personally, takes out any bounce as well as squeaks. Improper spacing. The engineered flooring will be 1/4" shy of the height of the hardwood in the other rooms, so I'd like to make up that difference underneath. These thicknesses add much more “grip” for screws than 1/4″, but don’t take away as much height (or add as much weight) as 3/4″. Leave ¾” space between wall and plywood. It's very easy to work with (you can cut it using a utility knife) and it helps dampen sound. plywood subfloor sheathing over the lumber decking. You can use CDX plywood or BC plywood, which has one smooth side. When 1/4 inch plywood is put over any floor it is either done to bridge over and smooth out low spots, or bypass a glue incompatibility problem.

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