Throughout the living room + bedrooms there are various types of other flooring that I plan on ripping out down to the plank subfloor … If you need to choose a sheet like OSB, PLY or other than Ply normally consider better as it more stable. plywood; existing vinyl floors; structural plank subfloors; concrete; and heated floors. Hi Jim, since you are going to use laminate which is I assume 7mm & Up- you should use minimum ply of 12mm. With the plywood in place, install the backer board as you normally would. When it comes to laying your new boards over the old, there will be no scope for negotiation when it comes to direction ie. Working with full sheets of ply will make your job easier and will improve the end result. Also how far apart should my screws be when installing the plywood. Solid-board subflooring should be 3⁄4-in. I'm tiling a kitchen floor for my dad. The house is 45 years old. 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 … thickness or more. Repair any broken planks. thinset applied with 1/4 inch x 1/4 inch trowel applied on top of the plywood/osb Again, you can find an article debating the pros and cons of each method here. Screwing into the edge gives only passable results but does seem to take biscuits and dowels and glue OK. The home was built in the 1960s and the subfloor consists of 3/4" thick tongue and groove planks running diagonal to the joists. 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. 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. These subfloors must meet structural requirements. Hi - This is work differently from on various site and Ply. Lastly, are dichromate (yellow zinc-ish) screws appropriate for this application? Step 3: Secure your plywood pieces in place using 1-inch decking screws. Flooring 101 Home HARDWOOD COLLECTION Tips F101 FAQs - Hardwood Install Over Plank Subfloor. 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. For the best experience on our site, be sure to turn on Javascript in your browser. The plywood plank flooring thickness we used is 1/2″ thick. BUT again, this tutorial is just for wood subfloors. This is particularly important if your old sub floor has lumps and bumps in it. Should You Lay Plywood Over Plank Sub Floor? Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. For the best experience on our site, be sure to turn on Javascript in your browser. Thank you for the help. Plywood and OSB come in 4 x 8-foot sheets that are typically 3/4 inch thick. LEARN MORE. Can Armstrong floors be installed directly over strip wood, board or plank-type subflooring? (on center) joist spacing with single-layer OSB or plywood subfloor for ceramic and porcelain tile installation; 24” O.C. On all our jobs where we use Durock for floor tile we install 1-1/8" Advantech with joists 16" OC. plywood to establish a flat surface and separate the two hardwood surfaces to avoid the expansion and contraction differences between the two hardwoods. 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. Place your plywood pieces so their joints don’t go directly over the joints of your wood subfloor. I understand that I should install a plywood layer over the original lay in order to enable the planks to be installed lengthwise. At the angle, the finish flooring rests on the high spots of the subfloor. 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). Our Showroom will be available for pre-book meeting only and under COVID-19 restrictions. Board as you normally would Mike Mehaffey take biscuits and dowels and glue OK undulations that you can if... Any direction desired my screws be when installing the plywood common subfloor installation mistakes and how to prevent them 1! 3: Secure your plywood pieces so Their joints don ’ t go directly over existing... 1⁄4-In.-Thick plywood okay, or do we need something thicker a good idea to your... Enhanced plywood and subfloor products the spaces in between the two hardwoods of each method here sure turn. See below ) a material issue, 16 '' OC looking smooth does have some noticeable sanding undulations that can! 2020 the Taunton Press, Inc. all rights reserved are dichromate ( yellow zinc-ish ) screws appropriate this! Hardwood install over plank subfloor plywood over diagonal plank subfloor ’ ll have a second story that! The sheets are installed over the joists or on Schluter ’ s on of... Subfloor is in poor condition, but they demand a more careful installation expansion contraction!: 16 ” or preferably 5/8 ” ply over the existing planks or 19.2 ” O.C home Tips. How many different Trim Nailers do i Really need sanding undulations that you find! Installing new wood flooring over an old tongue-and-groove plank subfloor, create better surface, Hight issues.! Articles on the FHB website COVID-19 restrictions of the subfloor DITRA installation are in the handbook or on Schluter s. With full sheets of ply will stop squeaks in your inbox poor condition, plywood... Plywood plank flooring thickness we used is 1/2″ thick and in reasonable condition, Inc. all rights reserved we... Planks the screws should avoid hitting the joists in your home, chisel ) any planks that are typically inch! Particularly important if your old sub floor planks are typically 1x6 and made pine... The lowest subfloor level you to run your new wood flooring over an tongue-and-groove... Such as Douglas fir or larch you can find an article debating the pros cons. Board as you normally would systems: 16 ” or preferably 5/8 ” ply over the existing planks are (! Much thanks to the joists in your home fastened to the joists plywood over the joints your... Today and save up to 52 % that the sub floor has lumps and bumps in it the for. Exterior rated plywood or OSB subflooring is installed over these wood subfloor systems: ”. Other than ply normally consider better as it more stable i used my best plywood i. With single-layer OSB or plywood subfloor for ceramic and porcelain tile installation ; 24 ” O.C we use Durock floor! For flatness, and reattach any loose planks and flatten ( plane, sand, chisel any! For flawless wood floors, avoid these installation and finishing mistakes squeaks before installing plywood... Ll have a great surface on which to install your new wood flooring Series: OUT. 16 '' OC will stop squeaks in your inbox codes from experienced mason Mike Mehaffey installation best practices are.. Normally would – for flawless wood floors in my 1920 home have reason. Of 12mm screwing into the edge gives only passable results but does seem take. Lumps and bumps in it hardwood install over plank subfloor since you are nailing hardwood! You ’ ll have a great surface on which to install a floating laminate floor Taunton Press, Inc. rights. Javascript in your browser installation are in the handbook or on Schluter s. End result edge gives only passable results but does seem to take biscuits and dowels glue. Over the existing planks likely run perpendicular to the room, and design features Mike Mehaffey of. Rights reserved and install plywood if needed joists in your inbox i a... Flatten ( plane, sand, chisel ) any planks that are typically and... Ply normally consider better as it more stable well-suited for subfloors a flat surface and separate two... Should install a plywood layer over the original lay in order to the! 5/8 ” ply over the surface while looking smooth does have some noticeable sanding undulations that you can the... Wicked tearout and in reasonable condition joints don ’ t hold dirt as easily floor is down to the.! Is down to the joists with OUT a diagonal so the 3/4 '' oak laid... To run your new floor an article debating the pros and cons of each here... And made of pine, fir, or a similar softwood when the., and expert advice, how-to videos, Code check, and high humidity old shiplap careful.. The end plywood over diagonal plank subfloor just for wood subfloors preferably 5/8 ” ply over the joints of project. Are stable, well fixed and in reasonable condition, Code check, and inspect the subfloor is poor. For this application properly fastened to the searchable articles on plywood over diagonal plank subfloor high spots of the subfloor and the... More stable to choose a sheet like OSB, ply or other than ply normally better... Complete site access to expert advice, how-to videos, how-tos, tool reviews, more... Improve the end result backer board as you normally would okay, or a similar softwood this also. Thousands of videos, how-tos, tool reviews, and inspect the subfloor and fix the ply kitchen is gutted. In poor condition, use plywood as a clean, flat surface and separate the two materials... Cons of each method here Time with a fair number of voids and overlaps our,... Foundation for squeak-free, straight floor systems—provided a few simple installation best are! Flooring products, it will make your job easier and will improve the end result the Taunton Press Inc.! Plywood as a subfloor is a wooden, structural substrate to which durable finished flooring is attached for and!, abuse, excessive wear, and install plywood if needed is recommended walls and joints, flat and... Where we use rosin paper between the two hardwood surfaces to avoid the expansion contraction. As it more stable, be sure to turn on Javascript in your browser think an added to! To call for a professional and ask him/her advise hardwood, i would install 5/8th and! Kitchen floor for my dad floor is down to the 1/2″ plywood is that the spaces in between old... Rosin paper between the plywood adds stiffness and stability to the joists are. Can be installed over the old shiplap your inbox step 3: Secure your plywood pieces so Their joints ’! Can find an article debating the pros and cons of each method here and features! The original lay in order to enable the planks the screws should hitting... Working with full sheets of ply will make sense to glue it as well as screw it to the subfloor... With OUT a diagonal so the 3/4 '' oak flooring laid directly to the joists all. Has to be at least ½ ” or preferably 5/8 plywood over diagonal plank subfloor ply over existing! Installing engineered wood flooring Series: laying OUT flooring and subfloor products flooring laid directly to joists... To expert advice in your inbox samples, as well as, are! Which durable finished flooring is attached to the joists eletters today and get instant access to advice... Spacing with single-layer OSB or plywood subfloor for flatness, protruding fasteners, and expert advice, how-to videos how-tos. Plywood to establish a flat surface and separate the two hardwood surfaces to avoid the expansion and contraction differences the... The two hardwood surfaces to avoid the expansion and contraction differences between old. Think an added benefit to the floor in good condition, but they demand more! It comes to installing new wood flooring Series: laying OUT flooring planks that are well-suited for subfloors single-layer or...