Install a layer of at least ½” or preferably 5/8” ply over the existing planks. plywood; existing vinyl floors; structural plank subfloors; concrete; and heated floors. you must lay the new boards perpendicular (at 90 degrees) to the old ones. A tube of PL400 and 2 1/2 inch flooring screws every 6-8 inches along the joist and 1 1/2 inch screws along all the seams. © 2020 The Taunton Press, Inc. All rights reserved. Place your plywood pieces so their joints don’t go directly over the joints of your wood subfloor. Re: Installing tile over diagonal solid subfloor Even if the 1x10 is a true 1" I don't believe it will be sufficient. :\: most all 1x6 subfloors are not like a plywood subfloor but have been the substantial proper base … Cracking and popping tiles are a sure sign that … Also how far apart should my screws be when installing the plywood. A beautiful floor starts with a stable subfloor. - M.K. They were commonly nailed to wood joists with standard box nails, which tend to loosen over … Our Showroom will be available for pre-book meeting only and under COVID-19 restrictions. Leave a 1/4-inch expansion gap around walls and joints. Here are nine common subfloor installation mistakes and how to prevent them: 1. Different plywoods use various materials and methods of manufacture, depending on the application for which they're intended. Follow the manufacturer installation recommendations, and inspect the subfloor and fix the squeaks before installing the flooring. When it comes to laying your new boards over the old, there will be no scope for negotiation when it comes to direction ie. I currently have particle board over 1" -1 1/4" car plank--which will be removed. by 51⁄2-in. Featuring: Opening Up a Family Kitchen; 1970s Revamp; Condo Kitchen Reimagined; One Bad Kitchen, Three Good Designs; and much more. At Wood and Beyond, we have a great team, all of whom are passionate about wood flooring and we’ll happily share our years of experience with you if you’d like us to. Inner plys appear to be poplar with a fair number of voids and overlaps. The first is that the sub floor planks are stable, well fixed and in reasonable condition. Underlayments can be damaged by plumbing leaks, abuse, excessive wear, and high humidity. Thanks for the info. 11 Wood-Flooring Problems and Their Solutions – For flawless wood floors, avoid these installation and finishing mistakes. Get an overview of the process of creating a traditional-style fireplace that burns well and meets current building codes from experienced mason Mike Mehaffey. Understanding the Upgrades: Enhanced Plywood and Subfloor Products. Iron-on edge veneer went on fairly well, but care must be taken when trimming and sanding the edging not to sand through the face veneer. There are several types of plywood that are well-suited for subfloors. In older homes, it was not uncommon for the subfloor to consist of simple 1 x 6, 1 x 8, or 1 x 10 planks nailed diagonally across the joists. The subfloor is in good condition, but we are thinking of putting plywood over it before installing the flooring. Here’s why: Your existing boards more than likely run perpendicular to the joists in your home. Doing this will also allow you to run your new wood flooring in any direction desired. Working with full sheets of ply will make your job easier and will improve the end result. Should I use 1/2" or 5/8" plywood as a subfloor over my car plank. The house is 45 years old. That will give you a solid subfloor that won't squeak. On all our jobs where we use Durock for floor tile we install 1-1/8" Advantech with joists 16" OC. IN GENERAL: ensure subfloor panels are level and properly fastened to the joists. Rudy Kelosky, owner of Wood Floor Designs, Inc., responds:Depending on the condition of the subfloor, you may not need the plywood at all. Your help is greatly appreciated. 11 Wood-Flooring Problems and Their Solutions, Install Wood Flooring Series: Laying Out Flooring. If you follow these general guidelines, you shouldn’t go wrong when installing your new wood flooring, but if you’d like specific help for your project, simply get in touch. Kitchen is mostly gutted, floor is down to the 1x6 diagonal subfloor. Two of the most important things to bear in mind, whichever method you use are: to acclimatise your new flooring well and secondly to allow for expansion and contraction of your new flooring by leaving an expansion gap of 10-15mm around your whole room. It is best to use #15 felt paper as a moisture barrier between the subfloor and hardwood if nailing down, or between the subfloors if gluing. The method of installation you choose will depend on a whole host of factors but will be one of these:  glue down, nail or staple down or floating. Structural floor on top of joists has to be at least 18mm thick overall. If you don’t respect this thickness of ply, then you’re highly likely to see rises and falls in your new flooring. If it’s on top of another subfloor, remove the tongue-and-groove hardwood to get down to the lowest subfloor level. Plywood is usually used as subfloor today. Throughout the living room + bedrooms there are various types of other flooring that I plan on ripping out down to the plank subfloor … Check for squeaks and flatness, and install plywood if needed. As any regular reader of this blog will know, if you’re laying a new wood floor over an old plank sub floor, there are several things you need to take into consideration. I had to make up a few quick cabinet boxes for a storage area and decided to use some 3/4" prefinished Chinese plywood to try out. If you’ve got a plank sub floor and are looking to install a new wooden floor, then you’re highly to be debating the pros and cons of laying your new floor directly on the old plank sub floor, or introducing a layer of ply. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. OSB provides a reliable, sturdy foundation for squeak-free, straight floor systems—provided a few simple installation best practices are followed. I'm aware that concrete backer board shouldn't be applied to plank subfloor, and that I need to lay down a plywood underlayment first. If at all possible, aim to sand your existing planks if they are showing significant signs of old glue or materials that need to be removed. COVID-19 Update | Online and phone orders, samples, as well as, deliveries are operating normally. If you are nailing down hardwood, i would install 5/8th t and g plywood over the existing. (on center) joist spacing with single-layer OSB or plywood subfloor for ceramic and porcelain tile installation; 24” O.C. When it comes to installing new wood flooring, the success of your project will depend to a large extent on the preparation. Unless you want to run your new planks perpendicular to the original boards, you have no option but to introduce a layer of ply. Installing plywood underlayment over old plank subfloor I'm in the process of remodeling my 1950s house that has plank subflooring (1/2" or 3/4" not exactly sure). Cracked and popping tiles could be a material issue. plywood to establish a flat surface and separate the two hardwood surfaces to avoid the expansion and contraction differences between the two hardwoods. 1/2 inch - 3/4 inch exterior rated plywood or osb, screwed down to the planks the screws should avoid hitting the joists. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. I'm laying plywood over an old plank floor and have been following your steps above - ensuring each plank is secured to joists, etc. Should You Lay Plywood Over Plank Sub Floor? The sheets are installed over the joists with construction adhesive and screws or nails. If the board subfloor is in poor condition, use plywood as a clean, flat surface to glue down 1⁄2-in.-thick engineered flooring. I'm tiling a kitchen floor for my dad. Like all wooden flooring products, it’s a good idea to acclimatise your plywood before laying it. Also the surface while looking smooth does have some noticeable sanding undulations that you can feel if you slide your hand over the surface. This is particularly important if your old sub floor has lumps and bumps in it. Our Showroom will be available for pre-book meeting only and under COVID-19 restrictions. For the best experience on our site, be sure to turn on Javascript in your browser. BC plywood over the old subfloor, using construction adhesive and driving 1-1/4-in. DITRA can be installed over these wood subfloor systems: 16” or 19.2” O.C. Screwing into the edge gives only passable results but does seem to take biscuits and dowels and glue OK. joist spacing with double-layer OSB or plywood subfloor for ceramic and porcelain tile installation Typical underlayment materials in an old house include plywood, cement board, particleboard, or hardboard. The floor joists are 2x9, 16" on center. Many homes have that 3/4" oak flooring laid directly to the joists with OUT a diagonal subfloor. thinset applied with 1/4 inch x 1/4 inch trowel applied on top of the plywood/osb If it is attached to the joists, you can use the 1⁄4-in. Thanks, Jim. COVID-19 Update | Online and phone orders, samples, as well as, deliveries are operating normally. All the specifics for DITRA installation are in the handbook or on Schluter’s site. If the subflooring is in good shape, nail it down without the plywood, assuming the engineered wood is of good quality and 1⁄2-in. With the plywood in place, install the backer board as you normally would. I am replacing the wood floors in my 1920 home. When you fix the ply to the old floor, you should avoid fixing it to the joists. fasten any loose planks and flatten (plane, sand, chisel) any planks that are not level. Get home building tips, offers, and expert advice in your inbox. Repairing a damaged subfloor is serious business, but it doesn't have to be scary. Install Wood Flooring Series: Laying Out Flooring – Making all calculations, adjustments, and layout marks before you lay the first board will get you professional results on your next flooring project. Hi, Our Blog’s post is generic and you will have to consider your own conditions and subfloor and “judge it” accordingly. screws every 6 in. Working this way creates what is called a “slip” between the two flooring materials and is recommended. Right now, I have 3/4 TG hardwood, which is not in the best shape, over a 2.5" wide x 3/4" inch think plank subfloor, which runs perpendicular to the joists (2x10, 16 oc). These underlayments are used on top of the sheathing to create a firm, even base for sheet vinyl, linoleum, and other surface materials. The home was built in the 1960s and the subfloor consists of 3/4" thick tongue and groove planks running diagonal to the joists. A subfloor is a wooden, structural substrate to which durable finished flooring is attached. "I have learned so much thanks to the searchable articles on the FHB website. Can Armstrong floors be installed directly over strip wood, board or plank-type subflooring? During remodeling, these planks are often replaced with plywood or OSB, or they can be augmented by laying another subfloor layer of plywood over the diagonal planks. The floor joists run lengthwise to the room, and we want to install a floating laminate floor. Introducing a layer of ply will stop squeaks in your floor if it is done properly (see below). Plywood or OSB subflooring is installed over joists, the horizontal wood members that make up the skeleton of a wood floor frame. Hi - This is work differently from on various site and Ply. And should we use rosin paper between the plywood and subfloor? Re: Replacing Diagonal Plank Sub floor for Tile Job Post by badali » Thu Dec 20, 2018 1:53 pm Just following up and the combination of blocking and then cut plywood … I found that unless I used my best plywood blade I got some wicked tearout. JavaScript seems to be disabled in your browser. I have a second story floor that was carpet over plywood subfloor. Kitchens & Baths – Winter 2020, Issue #295, Podcast 303: Advanced Framing, Wood Floors in a Bathroom, Unsafe Pools, Podcast 301: Stick vs. Post Frame, Upside-Down Clapboards, and Caulking Cedar Shingles, Plus, get an extra 20% off with code GIFT20, Simple Way to Make Old Walls Straight and Plumb, Expert insights on techniques and principles. For the best experience on our site, be sure to turn on Javascript in your browser. Basically you can install DITRA over. The existing planks that make up your floor have strength that runs in one direction only, and it is now recognised that ideally, subfloors should have strength that runs in both directions. I believe he needs to beef up the sub-floor with 1/2" ply screwed/glued down over … Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. How Many Different Trim Nailers Do I Really Need? These subfloors must meet structural requirements. Step 3: Secure your plywood pieces in place using 1-inch decking screws. Things to take into account when laying ply over plank subfloors: Take time to make sure your existing planks are well secured in place. Thanks for the comment. Hi Jim, since you are going to use laminate which is I assume 7mm & Up- you should use minimum ply of 12mm. Lastly, are dichromate (yellow zinc-ish) screws appropriate for this application? If there is any deflection in the wood plank subfloor when walked on it would be advisable to add an additional layer of 3/8" or 1/2" thick plywood underlayment glued and screwed down over the plank subfloor to add stability to weak subfloors. There are many types, sizes and configurations of plywood. Plywood and OSB come in 4 x 8-foot sheets that are typically 3/4 inch thick. MON-FRI 08:00-18:30 / SAT 10:00-16:30 / SUN 11:00-16:00 / BANK HOLIDAYS 10:00-15:30. The planks are 7" wide and 3/4" thick, tongue and groove with 1/4" gaps. Unfortunately, we cannot help on this one. For low profile hardwood flooring a 3/8" plywood installed over the planking will make for a flatter subfloor surface to install these floors over. If our floors weren’t so uneven we could have used 3/4″, but the flexibility that a 1/2″ plywood has was perfect to conform to our uneven sub-floor’s contours. group 1 dense softwood such as Douglas fir or larch. Save Time With a Prefinished Wood Floor – Factory-finished products mean less work on site, but they demand a more careful installation. By working this way, there will be no need to introduce any form of liner between the old planks and the ply. Is 1⁄4-in.-thick plywood okay, or do we need something thicker? We will be installing engineered wood flooring over an old tongue-and-groove plank subfloor. Again, you can find an article debating the pros and cons of each method here. plywood to establish a flat surface and separate the two hardwood surfaces to avoid the expansion and contraction differences between the two hardwoods. In any case if you have not done it before it might be sensible to call for a professional and ask him/her advise. If the current subfloor has tongue-and-groove hardwood planks, check to see if it is attached directly to the joists or if it’s on top of another subfloor. Start your subscription today and save up to 52%. At the angle, the finish flooring rests on the high spots of the subfloor. Flooring 101 Home HARDWOOD COLLECTION Tips F101 FAQs - Hardwood Install Over Plank Subfloor. House was built in 48', i think. Thanks for posting this great information! The inner plys are pretty sloppy and they depend on sanding to get it even enough for the final veneer which is whisper thin and very easy to chip an edge off if handled carelessly. The plywood plank flooring thickness we used is 1/2″ thick. This is particularly important if your old sub floor has lumps and bumps in it. thickness or more. I do not know if it was poorly constructed or if this naturally happened over time, but the tongues and grooves of the planks across much of … It was laid on a diagonal so the 3/4" oak can e laid either direction. Add a layer of 1/2-in. I understand that I should install a plywood layer over the original lay in order to enable the planks to be installed lengthwise. As for the rosin paper, it may help with squeaks between the subfloors, but you are better off addressing the root cause, which is proper installation of subfloor and hardwood. LEARN MORE. If the current subfloor has tongue-and-groove hardwood planks, check to see if it is attached directly to the joists or if it’s on top of another subfloor. Since then, planks have been almost entirely replaced by plywood and other sheet subflooring. The plywood adds stiffness and stability to the floor. BUT again, this tutorial is just for wood subfloors. Plywood is the best subfloor choice to lay on top of the pine because it nails in securely and creates a flat, even surface for the new floor to adhere to. Repair any broken planks. As a professional, I would never nail a hardwood floor down to the old shiplap. If you are in doubt about any of these considerations, or if you want to run your new flooring planks in the same direction as the old, then introducing a layer of ply is your best bet. Hi – Using Ply wood have various reason including - Leveling, create better surface, Hight issues etc. By the sound of It , it will make sense to glue it as well as screw it to the joists. What would be the minimum thickness of plywood that I should use, and as I understand it, I should not screw the new floor to the floor joists (?). If it is attached to the joists, you can use the 1 ⁄ 4 -in. The planks run diagonal to the floor joists. Preparation takes into account making the right decisions when ordering your wood flooring, but also means making sure your sub floor is well prepared for receiving your new floor. Below the kitchen is my basement. Things to take into account when laying ply over plank subfloors: Take time to make sure your existing planks are well secured in place. Once your ply is neatly in place, you’ll have a great surface on which to install your new floor. Initially it looks pretty good, nice even finish, but one side is definitely better quality wood, one side has lots of wood putty in it. The planks are typically 1x6 and made of pine, fir, or a similar softwood. I guess 18mm will be even better… in any case please also ask your fitter on site to check quality of joists and decide accordingly. Check the current subfloor for flatness, protruding fasteners, and squeaks, and reattach any loose boards. I am preparing to tile my kitchen floor and have it stripped down to the plank subfloor. Thank you for the help. Install a layer of at least ½” or preferably 5/8” ply over the existing planks. Improper spacing. Technical and Installation. Hide screw heads below the surface of your plywood pieces to … I can confidently say that I expect to be a life-long subscriber." If you need to choose a sheet like OSB, PLY or other than Ply normally consider better as it more stable. I think an added benefit to the 1/2″ plywood is that the spaces in between the planks doesn’t hold dirt as easily. Planks for subflooring must be run at a 45 degree angle to minimize the effects of cupping of the subfloor planks when tongue and groove finish flooring is used. Solid-board subflooring should be 3⁄4-in.

plywood over diagonal plank subfloor

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