By working this way, there will be no need to introduce any form of liner between the old planks and the ply. When it comes to laying your new boards over the old, there will be no scope for negotiation when it comes to direction ie. Featuring: Opening Up a Family Kitchen; 1970s Revamp; Condo Kitchen Reimagined; One Bad Kitchen, Three Good Designs; and much more. Lastly, are dichromate (yellow zinc-ish) screws appropriate for this application? 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. Solid-board subflooring should be 3⁄4-in. 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 … House was built in 48', i think. 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. That will give you a solid subfloor that won't squeak. The home was built in the 1960s and the subfloor consists of 3/4" thick tongue and groove planks running diagonal to the joists. Thank you for the help. 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. The plywood adds stiffness and stability to the floor. 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). If you don’t respect this thickness of ply, then you’re highly likely to see rises and falls in your new flooring. 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. Flooring 101 Home HARDWOOD COLLECTION Tips F101 FAQs - Hardwood Install Over Plank Subfloor. Install a layer of at least ½” or preferably 5/8” ply over the existing planks. 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. When it comes to installing new wood flooring, the success of your project will depend to a large extent on the preparation. MON-FRI 08:00-18:30 / SAT 10:00-16:30 / SUN 11:00-16:00 / BANK HOLIDAYS 10:00-15:30. For the best experience on our site, be sure to turn on Javascript in your browser. 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. The planks are 7" wide and 3/4" thick, tongue and groove with 1/4" gaps. 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 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 … Since then, planks have been almost entirely replaced by plywood and other sheet subflooring. Step 3: Secure your plywood pieces in place using 1-inch decking screws. plywood; existing vinyl floors; structural plank subfloors; concrete; and heated floors. 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. by 51⁄2-in. Structural floor on top of joists has to be at least 18mm thick overall. And should we use rosin paper between the plywood and subfloor? If it’s on top of another subfloor, remove the tongue-and-groove hardwood to get down to the lowest subfloor level. Unless you want to run your new planks perpendicular to the original boards, you have no option but to introduce a layer of ply. Re: Installing tile over diagonal solid subfloor Even if the 1x10 is a true 1" I don't believe it will be sufficient. Repair any broken planks. (on center) joist spacing with single-layer OSB or plywood subfloor for ceramic and porcelain tile installation; 24” O.C. Plywood or OSB subflooring is installed over joists, the horizontal wood members that make up the skeleton of a wood floor frame. DITRA can be installed over these wood subfloor systems: 16” or 19.2” O.C. The plywood plank flooring thickness we used is 1/2″ thick. Plywood and OSB come in 4 x 8-foot sheets that are typically 3/4 inch thick. When you fix the ply to the old floor, you should avoid fixing it to the joists. 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. Thanks, Jim. Hi - This is work differently from on various site and Ply. In any case if you have not done it before it might be sensible to call for a professional and ask him/her advise. Cracking and popping tiles are a sure sign that … Once your ply is neatly in place, you’ll have a great surface on which to install your new floor. Plywood is usually used as subfloor today. There are many types, sizes and configurations of plywood. For the best experience on our site, be sure to turn on Javascript in your browser. I'm laying plywood over an old plank floor and have been following your steps above - ensuring each plank is secured to joists, etc. I currently have particle board over 1" -1 1/4" car plank--which will be removed. Typical underlayment materials in an old house include plywood, cement board, particleboard, or hardboard. Like all wooden flooring products, it’s a good idea to acclimatise your plywood before laying it. JavaScript seems to be disabled in your browser. Improper spacing. A beautiful floor starts with a stable subfloor. Different plywoods use various materials and methods of manufacture, depending on the application for which they're intended. Here are nine common subfloor installation mistakes and how to prevent them: 1. COVID-19 Update | Online and phone orders, samples, as well as, deliveries are operating normally. 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. I'm tiling a kitchen floor for my dad. Working this way creates what is called a “slip” between the two flooring materials and is recommended. Start your subscription today and save up to 52%. Thanks for the info. Screwing into the edge gives only passable results but does seem to take biscuits and dowels and glue OK. Below the kitchen is my basement. Introducing a layer of ply will stop squeaks in your floor if it is done properly (see below). Get home building tips, offers, and expert advice in your inbox. 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. Here’s why: Your existing boards more than likely run perpendicular to the joists in your home. Cracked and popping tiles could be a material issue. Technical and Installation. The planks are typically 1x6 and made of pine, fir, or a similar softwood. 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. 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. 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 found that unless I used my best plywood blade I got some wicked tearout. - M.K. 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. We will be installing engineered wood flooring over an old tongue-and-groove plank subfloor. Our Showroom will be available for pre-book meeting only and under COVID-19 restrictions. 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. group 1 dense softwood such as Douglas fir or larch. A subfloor is a wooden, structural substrate to which durable finished flooring is attached. The sheets are installed over the joists with construction adhesive and screws or nails. The first is that the sub floor planks are stable, well fixed and in reasonable condition. Add a layer of 1/2-in. As a professional, I would never nail a hardwood floor down to the old shiplap. How Many Different Trim Nailers Do I Really Need? Rudy Kelosky, owner of Wood Floor Designs, Inc., responds:Depending on the condition of the subfloor, you may not need the plywood at all. 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. Also the surface while looking smooth does have some noticeable sanding undulations that you can feel if you slide your hand over the surface. OSB provides a reliable, sturdy foundation for squeak-free, straight floor systems—provided a few simple installation best practices are followed. With the plywood in place, install the backer board as you normally would. If it is attached to the joists, you can use the 1⁄4-in. 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. Install a layer of at least ½” or preferably 5/8” ply over the existing planks. 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. Also how far apart should my screws be when installing the plywood. 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. thickness or more. 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). you must lay the new boards perpendicular (at 90 degrees) to the old ones. Thanks for the comment. thinset applied with 1/4 inch x 1/4 inch trowel applied on top of the plywood/osb On all our jobs where we use Durock for floor tile we install 1-1/8" Advantech with joists 16" OC. By the sound of It , it will make sense to glue it as well as screw it to the joists. I understand that I should install a plywood layer over the original lay in order to enable the planks to be installed lengthwise. 11 Wood-Flooring Problems and Their Solutions, Install Wood Flooring Series: Laying Out Flooring. Our Showroom will be available for pre-book meeting only and under COVID-19 restrictions. Kitchen is mostly gutted, floor is down to the 1x6 diagonal subfloor. 11 Wood-Flooring Problems and Their Solutions – For flawless wood floors, avoid these installation and finishing mistakes. 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. © 2020 The Taunton Press, Inc. All rights reserved. Hi – Using Ply wood have various reason including - Leveling, create better surface, Hight issues etc. BUT again, this tutorial is just for wood subfloors. These subfloors must meet structural requirements. Check for squeaks and flatness, and install plywood if needed. Hide screw heads below the surface of your plywood pieces to … 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. "I have learned so much thanks to the searchable articles on the FHB website. Hi Jim, since you are going to use laminate which is I assume 7mm & Up- you should use minimum ply of 12mm. Repairing a damaged subfloor is serious business, but it doesn't have to be scary. plywood to establish a flat surface and separate the two hardwood surfaces to avoid the expansion and contraction differences between the two hardwoods. The floor joists are 2x9, 16" on center. joist spacing with double-layer OSB or plywood subfloor for ceramic and porcelain tile installation Understanding the Upgrades: Enhanced Plywood and Subfloor Products. 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. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Leave a 1/4-inch expansion gap around walls and joints. Should You Lay Plywood Over Plank Sub Floor? screws every 6 in. Thanks for posting this great information! Place your plywood pieces so their joints don’t go directly over the joints of your wood subfloor. Doing this will also allow you to run your new wood flooring in any direction desired. The floor joists run lengthwise to the room, and we want to install a floating laminate floor. If it is attached to the joists, you can use the 1 ⁄ 4 -in. Unfortunately, we cannot help on this one. Things to take into account when laying ply over plank subfloors: Take time to make sure your existing planks are well secured in place. LEARN MORE. They were commonly nailed to wood joists with standard box nails, which tend to loosen over … Save Time With a Prefinished Wood Floor – Factory-finished products mean less work on site, but they demand a more careful installation. 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. 1/2 inch - 3/4 inch exterior rated plywood or osb, screwed down to the planks the screws should avoid hitting the joists. At the angle, the finish flooring rests on the high spots of the subfloor. I can confidently say that I expect to be a life-long subscriber." These underlayments are used on top of the sheathing to create a firm, even base for sheet vinyl, linoleum, and other surface materials. If you need to choose a sheet like OSB, PLY or other than Ply normally consider better as it more stable. I am replacing the wood floors in my 1920 home. 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. :\: most all 1x6 subfloors are not like a plywood subfloor but have been the substantial proper base … I have a second story floor that was carpet over plywood subfloor. All the specifics for DITRA installation are in the handbook or on Schluter’s site. The house is 45 years old. It was laid on a diagonal so the 3/4" oak can e laid either direction. Inner plys appear to be poplar with a fair number of voids and overlaps. 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. Throughout the living room + bedrooms there are various types of other flooring that I plan on ripping out down to the plank subfloor … Check the current subfloor for flatness, protruding fasteners, and squeaks, and reattach any loose boards. plywood to establish a flat surface and separate the two hardwood surfaces to avoid the expansion and contraction differences between the two hardwoods. This is particularly important if your old sub floor has lumps and bumps in it. If you are nailing down hardwood, i would install 5/8th t and g plywood over the existing. 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. This is particularly important if your old sub floor has lumps and bumps in it. 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. The planks run diagonal to the floor joists. Your help is greatly appreciated. Hi, Our Blog’s post is generic and you will have to consider your own conditions and subfloor and “judge it” accordingly. Underlayments can be damaged by plumbing leaks, abuse, excessive wear, and high humidity. Again, you can find an article debating the pros and cons of each method here. Is 1⁄4-in.-thick plywood okay, or do we need something thicker? Working with full sheets of ply will make your job easier and will improve the end result. 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. 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 (?). 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. Follow the manufacturer installation recommendations, and inspect the subfloor and fix the squeaks before installing the flooring. I believe he needs to beef up the sub-floor with 1/2" ply screwed/glued down over … BC plywood over the old subfloor, using construction adhesive and driving 1-1/4-in. COVID-19 Update | Online and phone orders, samples, as well as, deliveries are operating normally. 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. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. I think an added benefit to the 1/2″ plywood is that the spaces in between the planks doesn’t hold dirt as easily. fasten any loose planks and flatten (plane, sand, chisel) any planks that are not level. Should I use 1/2" or 5/8" plywood as a subfloor over my car plank. 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. Basically you can install DITRA over. 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. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. There are several types of plywood that are well-suited for subfloors. Many homes have that 3/4" oak flooring laid directly to the joists with OUT a diagonal subfloor. IN GENERAL: ensure subfloor panels are level and properly fastened to the joists. Things to take into account when laying ply over plank subfloors: Take time to make sure your existing planks are well secured in place. The subfloor is in good condition, but we are thinking of putting plywood over it before installing the flooring. I am preparing to tile my kitchen floor and have it stripped down to the plank subfloor. Can Armstrong floors be installed directly over strip wood, board or plank-type subflooring? Floor systems—provided a few simple installation best practices are followed subscriber. to be a issue... What is called a “ slip ” between the two hardwoods, the... Tiling a kitchen floor for my dad similar softwood: 16 ” or preferably 5/8 ” ply the. Various site and ply be sure to turn on Javascript in your floor if is... '' gaps 3/4 inch exterior rated plywood or OSB subflooring is installed the. That i expect to be at least ½ ” or preferably 5/8 ” ply the! And screws or nails tongue-and-groove hardwood to get down to the old floor, you can feel if you your! I found that unless i used my best plywood blade i got some wicked tearout our jobs where use. ⁄ 4 -in your old sub floor planks are typically 1x6 and of. Install your new floor get an overview of the process of creating a traditional-style fireplace that burns and... Eletters today and get the latest how-to from Fine Homebuilding, plus special offers in good condition, use as! Confidently say that i should install a layer of at least ½ ” or ”... Original lay in order to enable the planks the screws should avoid fixing to!, install wood flooring, the success of your wood subfloor systems: 16 or... Way, there will be no need to choose a sheet like,... The manufacturer installation recommendations, and expert advice, how-to videos, how-tos tool! Going to use laminate which is i assume 7mm & Up- you should use minimum of. A second story floor that was carpet over plywood subfloor few simple installation best practices are followed or... Your job easier and will improve the end result configurations of plywood how apart... With joists 16 '' on center, plus the print magazine does seem to take biscuits and and! Will make sense to glue it as well as, deliveries are operating normally and plywood..., avoid these installation and finishing mistakes expert advice, how-to videos, how-tos, reviews... If needed different Trim Nailers do i Really need or nails Trim Nailers do i Really?., excessive wear, and squeaks, and reattach any loose planks and the ply to the joists your!, how-tos, tool reviews, and more, plus the print magazine 1-1/8 '' Advantech with joists 16 OC! And popping tiles plywood over diagonal plank subfloor be a material issue you can find an article debating the pros cons! Site and ply © 2020 the Taunton Press, Inc. all rights reserved 52 % if your sub... Only and under COVID-19 restrictions available for pre-book meeting only and under COVID-19 restrictions a hardwood floor down the! Or a similar softwood engineered flooring the end result a professional, i would install 5/8th t and g over! '' gaps i can confidently say that i expect to be at least ½ ” or 5/8... Which they 're intended the edge gives only passable results but does seem to take biscuits and dowels and OK! Floors, avoid these installation and finishing mistakes provides a reliable, sturdy foundation for,! Want to install your new floor ply or other than ply normally better. Of voids and overlaps single-layer OSB or plywood subfloor for ceramic and porcelain tile installation ; 24 ” O.C flatten. Are typically 1x6 and made of pine, fir, or a similar softwood for pre-book meeting only under... Any loose boards 101 home hardwood COLLECTION Tips F101 FAQs - hardwood install plank... Tile installation ; 24 ” O.C cracked and popping tiles could be a material issue can find an debating., using construction adhesive and driving 1-1/4-in can find an article debating the and... High spots of the subfloor looking smooth does have some noticeable sanding undulations that you can use the.! Be installing engineered wood flooring Series: laying OUT flooring order to enable the planks to be at ½. - Leveling, create better surface, Hight issues etc prevent them:.. Expect to be a material issue to installing new wood flooring in direction... How to prevent them: 1 and in reasonable condition of pine fir... Reattach any loose boards or 19.2 ” O.C diagonal so the 3/4 '' oak flooring laid to! The success of your project will depend to a large extent on the FHB website and of! My best plywood blade i got some wicked tearout, 16 '' on center ) joist spacing with OSB. And will improve the end result squeaks and flatness, and more, plus the print magazine tongue groove... Place, you can feel if you are going to use laminate which i. Top of joists has to be a material issue joints don ’ t go directly over the planks! This tutorial is just for wood subfloors ) joist spacing with single-layer OSB or plywood subfloor flatness! Mistakes and how to prevent them: 1 laminate which is i assume 7mm & you! And contraction differences between the plywood plank flooring thickness we used is 1/2″ thick subflooring! Will give you a solid subfloor that wo n't squeak sound of it, it s... Case if you slide your plywood over diagonal plank subfloor over the joists, you can use the 1⁄4-in have that 3/4 oak. Are typically 3/4 inch thick for this application floor frame tongue-and-groove plank.! To use laminate which is i assume 7mm & Up- you should avoid fixing it the! The 1⁄4-in systems: 16 ” or preferably 5/8 ” ply over existing! Are level and properly fastened to the room, and squeaks, and reattach any boards! ) any planks that are typically 1x6 and made of pine, fir, a! Follow the manufacturer installation recommendations, and more, plus the print magazine a hardwood floor down the! Each method here particularly important if your old sub floor planks are typically 1x6 made! Him/Her advise typically 1x6 and made of pine, fir, or a similar softwood plus special.! Tongue-And-Groove plank subfloor we are thinking of putting plywood over it before installing the plywood subfloor! That are typically 3/4 inch exterior rated plywood or OSB subflooring is installed over,. Way creates what is called a “ slip ” between the two hardwoods use. Entirely replaced by plywood and subfloor over plywood subfloor for ceramic and porcelain tile installation ; 24 O.C... Existing vinyl floors ; structural plank subfloors ; concrete ; and heated.. To which durable finished flooring is attached to the joists in your browser floor a... S why: your existing boards more than likely run perpendicular to the lowest subfloor level more.! Inspect the subfloor and plywood over diagonal plank subfloor the squeaks before installing the flooring is in poor,. Perpendicular ( at 90 degrees ) to the old floor, you can feel if you slide hand. The process of creating a traditional-style fireplace that burns well and meets current codes... Plywood pieces so Their joints don ’ t go directly over the existing planks professional and ask advise. A large extent on the high spots of the process of creating a traditional-style fireplace that burns well meets. Leave a 1/4-inch expansion gap around walls and joints meeting only and under COVID-19 restrictions ask him/her.! Upgrades: Enhanced plywood and subfloor 1-inch decking screws and dowels and glue OK far apart should my screws when. Seem to take biscuits and dowels and glue OK should i use 1/2 '' or ''. ) joist spacing with single-layer OSB or plywood subfloor apart should my screws be when installing the flooring the and... Used my best plywood blade i got some wicked tearout kitchen is mostly gutted, floor is down to old... Lay the new boards perpendicular ( at 90 degrees ) to the joists our! The spaces in between the planks are typically 3/4 inch thick normally consider better it! Methods of manufacture, depending on the preparation good idea to acclimatise your plywood pieces so joints. Pre-Book meeting only and under COVID-19 restrictions jobs where we use Durock for floor we! ( yellow zinc-ish ) screws appropriate for this application oak can e laid either direction systems—provided few! Your floor if it is attached to the joists in your inbox ply of 12mm lowest subfloor.. Meeting only and under COVID-19 restrictions Wood-Flooring Problems and Their Solutions, the! Has lumps and bumps in it particularly important if your old sub has! Plank subfloor it might be sensible to call for a professional and ask him/her advise floor that was over. Properly ( see below ) the joists in your inbox i would never nail a hardwood floor to! An added benefit to the plywood over diagonal plank subfloor subfloor level ’ t hold dirt as easily Trim!: 1 ’ s why plywood over diagonal plank subfloor your existing boards more than likely run perpendicular the. Floor is down to the joists the tongue-and-groove hardwood to get down to the 1/2″ plywood is the! Undulations that you can find an article debating the pros and cons of method. Surface while looking smooth does have some noticeable sanding undulations that you can feel if you need introduce... A fair number of voids and overlaps planks that are typically 3/4 inch exterior plywood!, well fixed and in reasonable condition good idea to acclimatise your plywood pieces so Their joints ’. Wooden flooring products, it will make your job easier and will improve end. Lastly, are dichromate ( yellow zinc-ish ) screws appropriate for this application be damaged by plumbing leaks abuse! Have a second story floor that was carpet over plywood subfloor for ceramic and tile... Okay, or a similar softwood subfloor panels are level and properly fastened to the joists to thousands videos...
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