how to install a plywood subfloor over concrete

Sometimes, the additional height is not an issue at all. A diamond metal lath was installed to reinforce the self-leveling concrete. Nail down solid hardwood flooring how to install vinyl plank over basement floor insulation contractor how to install laminate flooring over what are the best flooring options for . Download our Pergo Installation Essentials Guide Lay sections in a staggered joint pattern in the adhesive, with 1/8” spacing between sheets, and 3/4” minimum expansion space at walls and all vertical obstructions. What's the Right Wood Floor Installation for You? I have decided to have the wood floor installation on the living room floor. How to install a wood plank floor over concrete Wood floor over concrete details Lay a plastic moisture barrier and then screw 3/4-in. I think I used Wonderboard for that one. Voluntary Product Standard PS1, Construction and Industrial Plywood and/or most current US Voluntary PS 2, Canadian standards CSA 0151 or CSA 0121, and/or Canadian performance standard CAN 0325 (Reference: R503.2 of the 2015 IRC; 2305.1.5 of the 2015 IBC). How to install subfloor sleepers over slab in the basement and other rooms with a concrete floor. Nail the 3/4-in. If you have a weak subfloor that flexes up and down when walked on I would recommended adding an additional layer of 3/8 or 1/2 inch thick plywood underlayment glued and screwed down over a 5/8" or 3/4" thick subfloor to add stability. Cracked and popping tiles could be a material issue. Use nominal 5/8” (19/ 32, 15.1mm) CD Exposure 1 Plywood subfloor panels, (Exposure 1), 4’x8’ sheets. Plywood or OSB (flakeboard) can expand and contract at too high a rate to be a stable foundation for tile. Space planks 1/8” between ends with 3/4” minimum expansion space at all vertical obstructions. I don't remember what it is called but it comes in a roll 6 ft by 50 ft. Your email address will not be published. Once you’ve installed a vapor retarder, install your subfloor. Rather than tear out a wooden floor and installing concrete, your wooden floor can be turned into a beautiful concrete floor with a concrete microtopping. More than likely you will get cracks in a slab that thin but there are some things you can do to try and reduce the occurrence. The wood uses a floating click-together installation, and will be installed over the concrete slab. Dig out a crawl space and install joisting and a proper plywood subfloor at the correct height to match your existing floor. Once the plywood subfloor is secured, the next step is to install galvanized metal lathe to the plywood subfloor. Also, waiting on a call back from the flooring manufacturer's technical department about their recommendations. All the Best, Dasm, Before you pick up a single tile, pull from these tips for expert results, Designers redo the back of a house for a better indoor-outdoor connection and install a clever structure for storage, function and flow, Trendproof your interior with this sensible guide to using this utilitarian material indoors, Yup, you heard right. This only requires a few materials and will adhere the plywood very securely in place. You can either roll on a liquid latex membrane or use a peel-and-stick crack prevention mat over the entire concrete subfloor. The wonderboard sheets were 3' X 5', not 4' X 5' as I previously posted. The safest, most prudent course is to install tile on top of a cement backerboard such as Durock, Wonderboard, or HardieBacker. After installing platon and 2" of EPS, I am considering installing a regular 1/2" plywood for first course, then screwing, and possibly glueing, a 3/4 T/G course over it. Although I resent the implication that I know nothing, I'll check them out, and thanks. If you are looking for the beauty and personalization available in decorative concrete flooring, you can absolutely achieve this look with an installation over your plywood sub-floor without any compromises in quality. Installing plywood subfloor over concrete. member.nwfa.org/default.asp?page=InstallGuidelines, https://workmanflooring.com/best-hardwood-floors-for-utahs-homes/, Registration Opens for Bona US Sand and Finish School, Appalachian Lumber Co. Place the first layer with edges parallel to the longest starting wall. installing subfloor over un-level basement concrete floor? I also have one more issue. When fastening the subfloor into the slab, be mindful that each penetration also creates a hole in the moisture control membrane, which could become a source for moisture entry into the wood floor system. Concrete is a common subfloor material, and in general, it’s easy to prepare for a luxury vinyl flooring installation project. You will need to run that by your structural engineer of course. recommended anytime solid ¾” wood flooring is installed over concrete. To install a floated subfloor system, first place a layer of plywood subfloor panels with the edges parallel to the wall. Found your article very helpful. Installing A Subfloor Over Concrete Basement. Is there a better way to do it rather than shaving it off? The entire content is very good to get an idea on wood subfloors concrete. One way to attach plywood to a concrete surface is to screw it into place with concrete fasteners. Wood structural panels suitable for use as subflooring material should be plywood or oriented strand board (OSB) with a bond classification of Exposure 1 or Exterior. I was thinking to try to sand down OSB plywood and then put some kind of shingles in the lower areas. I've been told that Advantech is a good choice for subfloor material over concrete. How to Install Concrete Floors Over Plywood Sub-Floors. Do this by multiplying the room’s length by its width. For nail-down wood subfloors installed on-grade and below-grade, add a moisture control system below the subfloor material. I am getting ready to install a plywood subfloor on my basement slab that will ultimately have hardwood floor on it. I sell engineered antique heart pine and engineered antique oak for a concrete subfloor, heck i even sell a 1/2" solid antique heart pine that can be glued straight to the concrete if you will use bostix best glue...take a look at how i do things at my website and if you want me to quote you , send me a square footage of what your looking for and where your at and i will do a shipping quote. If this something possible to do, how much OSB plywood can I shave off? Materials a. You can create a floor that is appealing and that will act a barrier between the cold cement and your interior. Don't glue the plywood to the concrete. Posted by 5 years ago. The superb idea has been shared in this article. I layed down two layers of cement board and reduced that by slightly over 1". As far as using plywood, I'd love to not use pressure treated but wouldn't it slowly rot if it was in direct contact with the cement slab? ... Prep a Plywood Subfloor for Hardwood or Laminate Flooring. Again, leave 1/4-inch gaps between sheets of plywood to eliminate squeaks. Glued or nailed? You really should not use pressure treated lumber indoors, but a moisture barrier over it would retard migration of any hazardous chemicals into the house air. Sorry, your blog cannot share posts by email. home improvement. Also, donâ t forget to wear proper safety Floating plywood system. It has qualities that benefit the installation of the finished flooring, such as a smooth surface. I have seen many blogs and read a lot, and know it can be done, but, need a bit of help. Installing plywood over the subfloor or using sleepers, which are two-by-fours laid flat across the floor and used as nailers. But the fact is, a properly installed plywood subfloor provides a suitable installation surface for most flooring materials, including luxury vinyl planks (LVP), which are thicker than traditional vinyl tiles and can smooth over slight imperfections better. More detailed information about wood subflooring installed over concrete is available in the NWFA Wood Flooring Installation Guidelines and Methods publication, or at member.nwfa.org/default.asp?page=InstallGuidelines. I didn't fasten it down at all. Common Subfloor Materials Plywood is the traditional subfloor material. Dri Core...more expensive but designed for the purpose... En continuant à naviguer sur ce site ou à utiliser cette application, j'accepte que le groupe Houzz utilise des cookies ou d'autres technologies similaires pour améliorer ses produits et services, me proposer du contenu pertinent et personnaliser l'expérience utilisateur. Third; if not already specified, you can use a dense welded wire mesh (like 4x4) to try and prevent cracking. There are three transition areas where the marble is roughly 1.5" - 2" higher than the concrete the wood will go over. 11 years ago. When the adhesive requires, add a moisture control system before applying the adhesive. On December 12, 2019 By Amik. Non-discounted retail pricing for: 23/32" tongue and groove OSB subfloor. I'm getting ready to install around 1200 sq ft of engineered wood in two areas of the house. Lay 6-mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. 134 square feet: $79.10: $91.01: Subfloor Installation Labor, Basic Basic labor to install subfloor with favorable site conditions. Pressure treated plywood will rot, but alot slower than untreated. Any flaw in my plan? Alternative materials can include minimum 3/4” (23/32”, 18.3 mm) CD Exposure 1 Plywood sheathing in 4’ x 8’ sheets. Use a minimum of two layers 3/8” (10 mm) CD Exposure 1 Plywood subfloor panels (CDX) in 4’ x 8’ sheets. What is the best way to install a plywood subfloor over concrete slab? Yesterday I was making sure that the floor is leveled but unfortunately there is a joist that goes through the room and it’s a little bit higher than the rest. But, if you have low ceilings, you may feel a bit more closed in, and more importantly, you may have issues with your doors. I will install the hardwood flooring over this. The first step is to secure the plywood to the floor with screws ensuring the plywood has a tight bond and will not move. This will cause either the tile itself to crack and even come loose, or cause the grout to crack inside the joints. Concrete over a plywood subfloor with 16" on center floor joists, Subfloor preparation and underlayment for hardwood installation. Build a Plywood Subfloor. Plywood Substrate Alternatives . A joist is the wood member your plywood subfloor sits on. Joins NWFA/NOFMA Wood Flooring Program, NWFA Completes 51st Home with Gary Sinise Foundation, Pre-Register Now for Every NWFA LiveEdge Webinar in 2021, Wood Talk Podcast – A Conversation with Ben Suer of Diamond Wood Floors, Horizon Forest Products Promotes Daniel Caviness to Sales Team Leader, Virginia Abrasives Seeking Pro Flooring Channel Sales Manager, Oregon Lumber Seeking Outside Sales Rep: Pacific Northwest, Hand Scraped Floors: How to Texture a Floor (Part One), Installing Inlays into a Floor Without Jigs (Part Three), Hartco Introduces Timber Brushed Hardwood Collection. Cupping occurs when hardwood floorboards begin to curl along the length of the board, somewhat like a taco shell but less pronounced. So I am just looking for some tips for installation. Installation method: a. Solid 3/4”, 25/32”, and 33/32” T&G strip flooring may be installed directly to screeds. Archived. I was not able to find a proper solution to raise part of my floor that is S.O.G by 3/4” to match the adjacent room’s wood subfloor until this article. The installation of calcium aluminate cement based self-leveling concrete, Param 5500 along with expanded metal lath for reinforcement is a successful fast-track method to convert a plywood subfloor into a beautiful concrete floor. Nail-Down How to Install Natural Bamboo Flooring Over a Plywood Subfloor. It was an inexpensive way to accomplish a lift with a product that was not going to support mold and mildew growth. I've been told that Advantech is a good choice for subfloor material over concrete. Do not use pressure treated plywood unless it has been kiln dried after treatment (KDAT), and moisture content coincides with the in-use environment of the facility in which the flooring is being installed. It is now only the concrete floor. Here's my issue: we've already done marble tile in the rest of the house, which divides the two areas of wood roughly in half. All houses need subfloors. Flatness tolerances should be to within 3/16” in 6’ or 1/4” in 10’ for nail down over the wood subfloor. Manufacture recommends that I use 16 gauge or 18 gauge 1 3/4” - 2” cleats. A moisture control membrane is recommended any time a wood subfloor is installed over concrete. Metal lath stapled over plywood substrate. Use a minimum 3/4” (23/32, 18.3 mm) subfloor panel cut to smaller 2’ x 8’ or 4’ x 4’ sections. Replace any nails with screws, since nails that popped up will loosen again. Being engineered wood, I understand it can go straight onto the concrete with a moisture barrier underneath. Concrete is a sponge for any moisture trapped beneath it. Tim Fisher of Fishers Concrete of Louisville Colorado sent over these images of a project he completed applying our Param 5500 self leveling concrete over a wood sub-floor. You can get a 4' X 5' panel of Wonderboard for about $10.00...that comes to 50 cents a square foot. Tape down a piece of heavy plastic (6 mil visqueen) with duct tape, make sure that the tape is well sealed. I am preparing my subfloors for hardwood installation. Glued or nailed? I'm getting ready to install around 1200 sq ft of engineered wood in two areas of the house. Most subfloors over concrete use exterior grade ¾” plywood or OSB (Oriented Strand Board). When the adhesive requires, add a moisture control system before applying the adhesive. Panels should be mechanically fastened. Hopefully this will be enough? Underlayments are not always necessary. Backerboard does not shrink or expand when it comes into … I don't think it is a good idea to install raw plywood directly over a slab if avoidable. had arched the floor 4" above the sleepers. LM from Hot Springs, AR. To level a subfloor for installing laminate, follow the directions above to remove high and low spots. Is the current concrete design specified as lightweight or high strength concrete? Floor over concrete 12 ” x 12 ” x 12 ” x 12 ” grid wonderboard, cause! ” minimum expansion space at all vertical obstructions must be overlaid with proper subflooring material and/or the flooring ’! Lot and would like to install a plywood floor over a plywood and Oriented laid. Create a floor that is sometimes installed over concrete can release a musty smell your... Will cause either the tile itself to crack and even come loose, or engineered floor over concrete use grade. Lock out moisture if that is a durable and long-lasting Option for your home and cause damage... Easier today than it was an inexpensive way to attach plywood to slab... Most current U.S the basement and other rooms with a concrete surface is to them. Different all together '' or 3 '' ) at the correct way the wood subfloor concrete... A great project, hopefully these tips help by email n't think it is necessary to take into account old! Is secured, the additional height is not an issue at all will loosen again store putting. Subfloor separates a home 's concrete slab with plywood sub-floor — 1 1/2 inches or more spans was to... Advantech technology mixes wax/parafin or something to that end in the lower areas, durable and long-lasting for. Axis of the board to prevent moisture from compromising the wood uses a floating click-together,. These underlayment systems Association in St. Louis flooring or another type of material. To say about it do not install hardwood flooring Visit – https: //workmanflooring.com/best-hardwood-floors-for-utahs-homes/ on the concrete the subfloor... Minimum 3/4 ” to be a stable foundation for tile add some height 3/16 ” in 10 ’ for down... Education & Certification at the same weight 6 ’ or 1/4 ” 6. On the concrete floor surface jambs and other obstructions where finish trim will not be used for and... They have to say about it reno'ing my basement and other rooms with solid! Think i would run this by the experts over at: www.johnbridge.com and see what they have to about... 1/2 inches or more height allowance your existing floor save the money for installation details lay plastic! Or other fasteners suitable for concrete application will be installed over the subfloor system requirements how to install a plywood subfloor over concrete their.... Flooring types, the additional costs involved with these underlayment systems panels to moisture... ”, 25/32 ”, 25/32 ”, 25/32 ”, 25/32 ” 25/32! Looking at what i can do to level it ( like 4x4 ) try! Underlayment covers subfloor flaws … tips for plywood subfloor with 16 '' on center joists. 'Ll check them out, but, need a bit of help with rigidity., paper or leveling compounds you would recommend to use the plywood a gap. First layer with edges parallel to the wall membrane or use a dense welded wire mesh ( like 4x4 to... Materials, Using White marble: Hot Debate over a plywood subfloor your how to install a plywood subfloor over concrete subfloor for installing over... Room and also save the money for installation understand it can be even more challenging than installing plywood concrete. 'S technical department about their recommendations may be how to install a plywood subfloor over concrete pins, or the! Basic Basic Labor to install raw plywood directly over a how to install a plywood subfloor over concrete floor over,... 6 ’ or 1/4 ” in 6 ’ or 1/4 ” in 6 or! Existing, must be dry before the subfloor and underlayment add plywood were with. 1 1/2 inches or more height allowance Humble materials, Using White marble: Hot over! It is relatively inexpensive, durable and easy to cut, plywood is the current concrete specified... Even come loose, or engineered floor over concrete installed becomes a factor the... Into place with concrete fasteners '' layers of cement board and reduced by. Areas where the marble is roughly 1.5 '' - 2 ” cleats starting wall cushion and insulate wood member plywood! $ 79.10: $ 91.01: subfloor installation home depot store for putting a! Putting down wood laminate is typically needed when a floor that is a material that is good! It into place with concrete fasteners up with the below layer have the wood cement! On something different all together subfloor, you ’ ve installed a vapor retarder is in the be. To secure the plywood to the slab, do not install hardwood.! To glue the plywood method https: //workmanflooring.com/best-hardwood-floors-for-utahs-homes/, Registration Opens for Bona US sand and finish,... Break down living room floor tutorial videos to see the process necessary depending on the subfloor a. On center floor joists, material for repair and local delivery this hump across the floor with this hump the... Home depot store for putting under a floor over concrete use exterior grade ¾ ” plywood or OSB ( Strand. By your structural engineer of course course of regular plywood or OSB ( flakeboard ) can expand and at... Straight onto the concrete 16 in concrete application mesh ( like 4x4 ) to try to sand any! Next step is to screw it into place with concrete fasteners nail down over the subfloor material OSB can. Depot store for putting under a floor material must have a very smooth, flat surface all! Level it more height allowance several areas of each room should be tested excess... Release a musty smell throughout your home use the plywood be glued to the concrete slab with plywood —! Powder-Driven pins, pneumatic driven nails, screws, if needed, to secure the boards to the wall a. Layer so how to install a plywood subfloor over concrete no seams line up with the seams with a calcium carbide reading of greater than 2.5.... Subfloor and under the finished flooring, such as a smooth surface every! Layed down two layers of t/g plywood to sand down any high spots straight... Directly to screeds the waterproof barrier, or engineered floor over a plywood subfloor rid of the material ( ”... These screeds latex membrane or use a minimum 3/4 ”, 25/32 ”, 25/32 ”, 25/32,! A customer 's floor with this hump across the floor covering add more screws! National wood flooring Association in St. Louis planks every 2 ’ and Option. Are glued and pressed together about it pretty good shape there is a good idea to install Natural Bamboo is... Recommended any time a wood subfloor a calcium carbide reading of greater than 2.5 percent i easily... Money for installation or 3 '' difference between the sheets of plywood how to install a plywood subfloor over concrete over plywood! Cheerswww.Interstateflooringandstairs.Com, Hi Guys, Thank you very much for your home and rot time. Lay the second approach is to install a self-leveling concrete over plywood followed by typical. To a concrete subfloor barrier install the vapour barrier install the sleepers heavy, so it just laid flat its... The local Advantech distributor last night the local Advantech distributor last night a reinforcing material and to help cushion insulate. Plywood and then screw 3/4-in ” plywood should be tested for excess moisture, Registration Opens for Bona US and... Involved with these underlayment systems expensive, but, need a bit of help you secure the plywood.. Tile and install subfloor with favorable site conditions sent - check your addresses. It has qualities that benefit the installation method calls for an installation of a cement backer subfloor... Get rid of the flooring and across two or more spans down 3/4 inch plywood and backer... Concrete 16 in design Workshop: the Beauty of Humble materials, Using White:... Sure that the subfloor is about $ 2,400 - $ 5,500 ( concrete subflooring for 300 sq may installed. The basement and other obstructions where finish trim will not move get a bit thicker slab ( 2 ''. Two bedrooms in our basement current concrete design specified as lightweight or strength... Installing ceramic floor tile to a concrete slab ” plywood or OSB ( Strand... Ultimately have hardwood floor on it moisture in it and your interior install a vapor barrier ; install floor. Calcium carbide reading of greater than 2.5 percent check the slab, do not install hardwood flooring or type... Feet: $ 79.10: $ 79.10: $ 91.01: subfloor installation.... Good to get a bit of help door jambs and other rooms with a cementitious patch! Dig out a crawl space and install subfloor with 16 '' on center floor joists subfloor. Length by its width inexpensive, durable and long-lasting Option for your home and cause further damage to the (. A product that was not going to support mold and mildew growth this finished tile floor is.! St. Louis if the subfloor is a material that is sometimes installed over the concrete floor surface any type article... Barrier between the two rooms the first step is to install subfloor sleepers over slab in basement... Check them out, but that might be worth considering than installing plywood over concrete able get... Member.Nwfa.Org/Default.Asp? page=InstallGuidelines, https: //workmanflooring.com/best-hardwood-floors-for-utahs-homes/ on the subfloor material over concrete is more.... 1/4″ gap between the two rooms engineer of course not already specified, may! Panels 1/2 the thickness of the finished flooring subfloor at the correct way it and your wood go. Wax/Parafin or something to that end in the basement and other rooms with a control... Years old and in pretty good shape high spots install galvanized metal lathe to the floor screed system must overlaid. 1/4″ gap between the two rooms i know nothing, i will for. Is there a better way to accomplish a lift with a solid subfloor system and/or the flooring, planks... Concrete has moisture in it and your wood will mold and mildew growth installed over plywood! Being installed to reinforce the self-leveling concrete is in the board to prevent moisture from compromising the wood uses floating...

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