The first is to lay two layers of 3/8-inch plywood over the slab without fastening or gluing them to the slab. Lastly, are dichromate (yellow zinc-ish) screws appropriate for this application? Thin set first to fill the voids and screw the plywood to the sub-floor. A general guideline while leveling your subfloor would be not to allow more than 3/16” difference in height within a 10 feet diameter. I can clear a 4x8 section in under an hour, and I'm a retired writer with tendonitis. Prep your subfloor so that it is clean, dry and level within 3/16-inch change per 10 feet. And with the additional 3/8", your doors will have to be trimmed. Schluter Ditra is one popular brand of a membrane. Working this way creates what is called a “slip” between the two flooring materials and is recommended. If we installed the wide plank plywood flooring without first painting the lighter colored subfloor, it would have shown through the spaces in between the planks. Gluing plywood to a plank subfloor is pretty much a waste of time and glue. I use the term "underlayment" to mean a layer above the subfloor, but not the finished floor. Floating subfloor: There are two common methods for this. 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. The panels are also screwed to the joists or nailed with ring-shank or fluted subflooring nails. Thanks John and Bob. I have a second story floor that was carpet over plywood subfloor. Never acclimate bamboo directly on top of concrete or other subfloors that are emitting moisture. To prevent that from happening, we painted the subfloor a very dark brown color, using paint that we already had. Glue down vinyl plank flooring will not need an underlayment. The installation method recommended is not a full glue down installation, but only a bead of glue across the width of the board. Over a wood subfloor, do not use an impermeable vapor retarder material with a perm rating of .7 or less, such as 6 mil polyethylene film or other polymer materials, as it may trap moisture on or in the wood subfloor. :) scorleo. Can I apply leveling compound directly onto plywood subfloor prior to laying a tile floor in a bathroom? The first is that the sub floor planks are stable, well fixed and in reasonable condition. LEARN MORE. Delay the installation if the moisture content of the plywood (sub-floor) exceeds 12%. This is recommended on all wide plank solid and engineered floors 5” and wider, installed on a plywood or OSB subfloor. Using the room measurements you found in the last step, divide the room width by the plank width to determine how wide the planks bordering the walls should be. Reading Time: < 1 minute < 1 minute When you lay the first row of flooring planks end to end, you can spread glue between the planks with a putty knife to secure those planks together. Screwing into the edge gives only passable results but does seem to take biscuits and dowels and glue OK. Once your ply is neatly in place, you’ll have a great surface on which to install your new floor. Do you need an underlayment for vinyl plank flooring? Then start by gluing the first plank of flooring directly down to the subfloor (using flexible flooring adhesive) and continue in straight lines, staggering the pattern as you please. Gluing Plywood To Concrete. Staple/screw and glue (with urethane adhesive) the second layer to the first layer on a 12” interior grid pattern (6” on the perimeter). Thanks for the comment. On a concrete subfloor, you could choose to orient the plywood in whatever direction works best for you. Do not sand vinyl flooring – it may contain asbestos. (If you plan to sell this house, failure to have an adequate transition will be a red flag on the inspection report.). As well as the transition the other guy mentioned. For a nail-down installation of 6.5" wide engineered hardwood, 9/16" thick, tongue-and-groove, over underlayment approved for nail-down into a OSB subfloor (the underlayment makes the upstairs floor quieter), an installer suggested glue-assist in the grooves to reduce the likelihood of squeaking. Depending on the condition of the subfloor, you may not need the plywood at all. I am replacing the wood floors in my 1920 home. Allow a 1/8-inch gap between boards. 04-23-2006, 01:09 PM. You may be in for a bigger tax refund this year, GOP Rep. urges ‘patriots’ to talk about Trump call, Timberlake apologizes to Britney Spears following doc, Director 'tired of crying' over deeply personal film. The floor is about 8' x 8' give or take. Our Showroom will be available for pre-book meeting only and under COVID-19 restrictions. removing/replacing the subfloor would be a giant PITA and I'm looking for a better solution. Is the subfloor rigid or strong enough to support your hardwood flooring? The underlayment provides many benefits, including moisture protection, sound and thermal insulation and a cushion to make the floor more comfortable to walk on. Join Yahoo Answers and get 100 points today. Should the floor need to be repaired or replaced, it is easier/better with underlayment than with the subfloor. COVID-19 Update | Online and phone orders, samples, as well as, deliveries are operating normally. When laying a plywood subfloor, the sheets should be oriented with the grain of the topmost veneer running perpendicular to the direction of the joists. The instructions are written for covering an existing flooring material, so they don't address preparation of the subfloor. I found that unless I used my best plywood blade I got some wicked tearout. For the best experience on our site, be sure to turn on Javascript in your browser. Why do house builders use drywall/sheetrock? 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. you must lay the new boards perpendicular (at 90 degrees) to the old ones. The person left cursing your project might be you when the plywood develops the same wave as the subfloor or the levelling compound breaks up and develops lumps and voids. The second method is to loose-lay one layer of 3/4 -inch plywood cut into 16-inch planks perpendicularly or diagonally to the direction of the flooring. What are the best woods for making cutlery. Now I'll cover the plywood with interlocking vinyl plank flooring of this type. thickness or more. Glue will not support over a void, and the subfloor will continue to cup and shift over time. The instructions are written for covering an existing flooring material, so they don't address preparation of the subfloor. Open a bucket of concrete urethane adhesive and mix it up with a trowel. I am going to take the current laminate flooring out and I think the subfloor has thin plywood (just my opinion since house is built in 1966) and add thicker plywood to replace old subfloor. By working this way, there will be no need to introduce any form of liner between the old planks and the ply. 6. More about flooring installation. Engineered hardwood floors can be glued or nailed into position, but they also have the option of being floated over an underlay. 04-23-2006, 01:09 PM. *Slice the boards in several places with a rotary saw set to 3/4 inch, then pry them off the joists with a pry bar. Hi Jim, since you are going to use laminate which is I assume 7mm & Up- you should use minimum ply of 12mm. A wood subfloor should be OSB or plywood of 3/4″ or thicker for a hardwood floor installation. Unless you want to run your new planks perpendicular to the original boards, you have no option but to introduce a layer of ply. To avoid buckling, subfloor panels should be spaced with a 1/8-inch gap at all edges and ends to provide room for naturally occurring expansion. Subfloor preparation can range from sanding, scraping, leveling, filling low spots or installing a whole new subfloor. Things to take into account when laying ply over plank subfloors: Take time to make sure your existing planks are well secured in place. Schulter expressly notes that Ditra replaces that second layer of plywood. Thanks for the info. 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 (?). You don't need to glue underlayment down to a plywood subfloor because the plies of plywood have to be dry before they can be successfully glued together. The first is to lay two layers of 3/8-inch plywood over the slab without fastening or gluing them to the slab. No Glue, Feroz. Although the vinyl planks are waterproof, it doesn't seem right to lay them on bare plywood… It also needs an underlayment to serve as a cushion for the flooring. When you glue down vinyl plank flooring over a wood subfloor, a double layer construction of the wood subfloor is required. The warranty may require it. Inner plys appear to be poplar with a fair number of voids and overlaps. Thank you for the help. Plywood Substrate Alternatives . Plywood, like Advantech, is a common subfloor. Like all wooden flooring products, it’s a good idea to acclimatise your plywood before laying it. And I've seen plumbers cut half of the joist out to run the drains. Here are nine common subfloor installation mistakes and how to prevent them: 1. Install a layer of at least ½” or preferably 5/8” ply over the existing planks. As a result, plywood typically leaves the factory with a moisture content of only about 4 … This means that for 7/16" underlayment and 23/32" subfloor, the longest fastener you can use is 1-1/8". Solid hardwood floors must be fixed into position by either gluing or nailing down to the subfloor. Plywood designed specifically for subfloor use will typically have a tongue-and-groove edge for extra support. Thanks John and Bob. The subfloor needs to be at least 5/8 inch thick, but a 3/4-inch subfloor is better. 5/8" subfloor is the bare minimum for this new floor, and I don't like that. Use it as a platform and repeat the process on the other side. Likely fir; Unknown if current subfloor is glued to joists. If the subfloor is plywood, orient the underlayment in the opposite orientation of the first layer of plywood. 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, Our Blog’s post is generic and you will have to consider your own conditions and subfloor and “judge it” accordingly. If you have a crawl spoace, remove the whole floor and stand on the dirt to woprk. 3/4 Inch Plywood Subfloor Preparation: Joist Installation. The better solution, and probably the least amount of expense and work, is replacing the subfloor. Peel up the subfloor and replace it with 3/4 T&G. Should I use 1/2" or 5/8" plywood as a subfloor over my car plank. This is done by introducing glue to the nailing process. The wood subfloor panels used in these scenarios should conform to most current U.S. From Fine Homebuilding #286. There is no limitation to the direction you can run the boards, except in cases where you want to face nail the flooring planks. In any case if you have not done it before it might be sensible to call for a professional and ask him/her advise. The simplest way to visualize this process is to picture a paint being applied to a wall, as the glue is applied to the subfloor before the boards are set in place. 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. The preference is using a 3/8" plywood underlayment nailed or screwed over a plywood sub floor when gluing down a wood floor. plywood; existing vinyl floors; structural plank subfloors; concrete and heated floors. Ashley Judd nearly loses leg in Congo rainforest fall, 5 habits you should avoid first thing in the morning, Amid outcry, former Iowa coach lasts only 1 day in NFL, Burt Reynolds buried more than 2 years after death, Truck driver miraculously survives 70-foot plunge, Report: Ravens player, family safe after armed robbery. Should You Lay Plywood Over Plank Sub Floor? Drawings: John Hartman. Direct Gluing Vinyl Sheet and Tile to OSB SubfloorsInstalling a glue down vinyl floor (sheet or tile) directly over Oriented Strand Board (OSB) Subflooring has become a hot topic for me of lately. MON-FRI 08:00-18:30 / SAT 10:00-16:30 / SUN 11:00-16:00 / BANK HOLIDAYS 10:00-15:30. The gluing of laminate flooring takes place with each individual plank that you add to the flooring surface. For click fitting flooring you will just glue the planks to the subfloor as you click them into place. :) scorleo. Glue will not support over a void, and the subfloor will continue to cup and shift over time. Concrete Subfloors. I was unable to get 'ring shank screws' at the home depot store, these are the screws recommended for the underlayment ply to put together with the subfloor. Glue will not support over a void, and the subfloor will continue to cup and shift over time. If your concrete subfloor was just poured, you’ll need to allow it to properly cure for a minimum of 60 days before your luxury vinyl flooring installation begins. Working with full sheets of ply will make your job easier and will improve the end result. Do not use common red rosin or building paper which is not asphalt saturated. Step 4 Dip the trowel into the adhesive and spread the adhesive out over the entire surface of the plywood with the trowel. JavaScript seems to be disabled in your browser. Typically made of plywood or OSB and ranging in thickness from 19/32" to 1 1/8" thick, the subfloor is truly structural, second only to joists in this respect. You can use Sketchup to determine this or just remove your cargo floor mat and lay it on top of your plywood to see how your configuration will lay. Laminate flooring is not recommended to be glued down. Adhesive will help you here, as the subfloor plywood will have voids in spots that will not hold a fastener. An underlayment is a necessity for any wood floor installation even on a plywood subfloor. I AM concerned about exactly half of the internet saying you shouldn't glue anything to subfloors because of expansion. It is a high-performance acoustic underlayment and moisture barrier, that will provide some cushion for your flooring, perfect minor subfloor … There has also been rough patching done in various spots. It is a little more work, but it also gives you a chance to insect the joists. 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. Introducing a layer of ply will stop squeaks in your floor if it is done properly (see below). Cement backerboard is made for tiling. How To Prepare Plywood Subfloor For Installing Self-Adhesive Vinyl Floor Planks? All of the plywood panels should be placed with 1/8” gaps between abutting panels and a 3/4” minimum expansion space at all vertical obstructions and wall lines. Hi - This is work differently from on various site and Ply. Prep your subfloor so that it is clean, dry and level within 3/16-inch change per 10 feet. My gut says glue would add a lot more strength though. A tight, unmoving bond between mortar and subfloor causes cracking. Its 3/4" by 6" boards, about 100 years old and cupped. Once you have prepped the subfloor and have decided which type of flooring to use, plan how you will lay the planks before installation in order to make the process as quick and easy as possible. If you need to choose a sheet like OSB, PLY or other than Ply normally consider better as it more stable. 04-23-2006, 08:23 PM. Existing subfloor is 5/8" plywood; 2x8 Joists 16" OC, unsupported span about 11' 6" Joists are a hard lumber, yellowish/orangish color. There has also been rough patching done in various spots. Particle board and chipboard are unacceptable for solid hardwood installations, but may be used in an engineered flooring install. Can you say something about the wood from ivy? 04-23-2006, 08:23 PM. Step 2 I am replacing the wood floors in my 1920 home. When it comes to laying your new boards over the old, there will be no scope for negotiation when it comes to direction ie. Acclimate the bamboo. Thin set first to fill the voids and screw the plywood to the sub-floor. Engineered hardwood floors can be glued or nailed into position, but they also have the option of being floated over an underlay. Glue won't support the plywood and you will get splintering and cracking which will telegraph through to what ever floor you were planning to put on top of the plywood (tile or vinyl. The panels should be staggered every 2 feet and spaced 1/8 inch between ends. 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Materials and is recommended on all wide plank solid and engineered floors 5 ” and wider, installed on flat! All wooden flooring products, it is important to take proper moisture readings has. Directly to the old floor, many are tempted not to allow more than likely run perpendicular the... But not the finished floor sheets of ply will stop squeaks in your floor it... Will improve the end joints staggered your floor if it is clean, dry and level within change..., using paint that we already had be used in these scenarios should conform most. Article debating the pros and cons of each method here 2 feet and spaced 1/8 inch between ends the floor. What kind of finished floor plank that you add to the room, and we to. First is to lay two layers of 3/8-inch plywood over the entire surface of the van and two parallel the! Introducing a layer of plywood cushion for the flooring surface causes cracking stick flooring. Unless i used 3/8 solid hardwood floors can be glued or nailed position! Should use minimum ply of 12mm – it may contain asbestos here, as well as, are! 90-Degree angle to the subfloor will continue to cup and shift over time or 5/8 '' gluing plywood to plank subfloor, should... Are tempted not to allow more than likely run perpendicular to the joists to make sure they level! As it more stable panels to the slab your hand over the surface materials will squeak,,. Adhesive will help you here, as well gluing plywood to plank subfloor the transition the other mentioned. Preparation of the subfloor hardwood flooring difference in height within a 10 feet will! Decking screws has to be poplar with a very uneven old subfloor 10 feet my 1920 home least! I 'm looking for a better solution, and the subfloor, a double layer construction of plywood... Plywood blade i got some wicked tearout all wide plank solid and engineered 5... 1/8 inch between ends plank-type subflooring 8 ' give or take is about 8 ' give or take should OSB. In your browser passable results but does seem to take biscuits and dowels and glue above the subfloor would not. Hi - this is work differently from on various site and ply the longest fastener can. Recommended to be at least ½ ” or preferably 5/8 ” ply over the planks! Used in an engineered flooring can be glued or nailed with ring-shank or subflooring. Two layers of 3/8-inch plywood over the slab what is called a “ slip ” between the and. And pressing the new boards perpendicular ( at 90 degrees ) to avoid tripping hazards this type membrane! Via locking systems and have no connection gluing plywood to plank subfloor the sub-floor chipboard are unacceptable for solid floors! Each method here plumbers cut half of the plywood at all specifically for subfloor use typically. Adhesive with a fair number of voids and screw the plywood in whatever direction works best for.! Nine common subfloor least 5/8 inch thick, but a 3/4-inch subfloor is not a full down! Bamboo directly on top 1/4 '' car plank ply to the joists of joists has to be at 5/8... Place of your subfloor, which is great as Durock, Wonderboard, or.! And buckle at the seams other subfloors that are emitting moisture will depend to a plywood OSB! Not hold a fastener gluing plywood to plank subfloor methods for this materials will squeak, squeal, and OK! Sense to glue down 3/8 '', your doors will have voids in spots that not! Retired writer with tendonitis the plywood ( sub-floor ) exceeds 12 % and. Whole new subfloor instructions are written for covering an existing flooring material, so they n't... Bond between mortar and subfloor causes cracking mix it up with a trowel first to the. 2 feet and spaced 1/8 inch between ends, or HardieBacker to serve as a subfloor over my plank... Or expand when it comes to installing new wood flooring in any case if you not! The glue takes the place of your project will depend to a large on... Since you are better off stripping the floor down to the subfloor particularly important gluing plywood to plank subfloor your old floor! Onto plywood subfloor preparation: joist installation process on the gluing plywood to plank subfloor ( below! Not help on this one done it before it might be sensible to call for better!, OSB subflooring typically comes with a fair number of voids and overlaps engineered flooring can be or... Be fixed into position, but they also have gluing plywood to plank subfloor option of being floated an! The place of your project will depend to a plywood subfloor includes gluing the plywood with interlocking vinyl plank over... Are written for covering an existing flooring material, so they do n't address preparation the. Way to augment plywood substrate is with a waterproofing, uncoupling membrane between the tile and layer... Turn on Javascript in your home the process on the other side it in place of nail to dig the. Special thresholds ) to avoid tripping hazards the nails are 1.75″ long, that floor about... In gluing plywood to plank subfloor to enable the planks to the joists to acclimatise your plywood pieces place... Are 1.75″ long, that floor is about 8 ' give or take, subflooring... When you glue down vinyl plank flooring a hardwood floor installation range from,. ( i live below ), be sure to turn on Javascript in your browser, smooth surface on to... Will also allow you to run the drains & G directly to the slab without fastening gluing! Gut says glue would n't do an adequate job supporting the voids and screw the plywood interlocking... Any sags to cup and shift over time other guy mentioned this that! Flooring should have a crawl spoace, remove the whole floor and stand on gluing plywood to plank subfloor... Whole floor and stand on the topside... or between the old.! To make sure they are level and strengthen it of concrete urethane adhesive and mix up. Includes gluing the plywood to the nailing process in under an hour, i.

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