installing plywood over subfloor

Hi, we're Ethan, Jocie, Kim and Fred. A very noble project sir. Thank you for your interest in Weyerhaeuser and we hope you enjoy your visit. Because you can install sheet vinyl over existing vinyl, it offers the option of changing design without breaking the bank. A plywood layer is not necessary if you are putting down wood laminate. screws every 6 in. 5. DRICORE ® Subfloor is a simple do-it-yourself solution to help you create a warm, dry, comfortable basement that is fast and easy to install. Step 4: Set the plywood on the construction adhesive with the tongue oriented towards the groove of the adjacent sheet. Is 1 ⁄ 4-in.-thick plywood okay, or do we need something thicker? It aids during installation if the joists are installed exactly 16 inches on center throughout the floor. Since the nails are 1.75″ long, that’s about 0.75″ of nail to dig into the plywood subfloor, which is great. It has qualities that benefit the installation of the finished flooring, such as a smooth surface. When you’re installing an interior subfloor using 3/4-inch plywood, you’re going to want screws that are labeled #8, #10, or #12. In fact, it can sit out in a full on rain storm and not be damaged. If the house is out of square, it will make it exceedingly difficult to get the plywood straight on the joists. OSB exposed during construction must be allowed to dry (especially before installing sensitive finish materials such as hardwood flooring). Improper glue application. Also, the best application to prevent squeaks is to glue and screw the sheathing but most people opt for glue and nails. 2. © Weyerhaeuser Company. Forgetting to check your work. Apply glue per manufacturer’s specifications. In addition, you’ll find that steel screws come in a number of different lengths. A glue-nailed construction technique is optimal for ensuring a flat, stable floor. Put a nail every 8-10 inches on the surface. Step 8: Trim the edge of the floor by snapping a chalk line and cutting with a circular saw. Instructions Step 1: Remove the Existing Flooring. Best Tongue And Groove Plywood Subfloor Gallery | Plywood Decorations, Home Depot Coupons, Coupon Codes, 10% Off Sales – FALL/WINTER 2020-2021, AJ Madison Coupons, Sales, Coupon Codes, 40+% Off – FALL/WINTER 2020-2021, Lowes Coupons, Sales, Coupon Codes, 10% Off, Target Coupons, Sales, Coupon Codes, 10%-60% Off – FALL/WINTER 2020-2021, Sears Coupons, Sales, Coupon Codes, 10% Off – FALL 2020/WINTER 2021, Consider both load bearing capacity and deflective properties when selecting subfloor materials. Further, it can close up the necessary gap on panel edges, leading to improper spacing issues mentioned above. Hey Todd, Good thoughts on Advantech. For subflooring, you use tongue and groove plywood. After vacuuming or sweeping the subfloor to clean it, add a plywood layer if the subfloor is in very bad shape, but do not overlap the sheets. Quantity includes typical waste overage, material for repair and local delivery. Your goal is to have the plywood end exactly half way across the joist, so that the new plywood can start on this spot. Attach the smaller piece to the subfloor with a 1-inch wood screw every six inches in each direction using a power drill. Solid joists take longer to burn through, and will provide structural support longer. The real danger I see is in the floor collapsing prematurely with firefighting personnel going into the building… Covering with drywall probably gets you most of the way to a solution, especially with smoke detectors… but if it were in my house, particularly if it were in a first floor with an unfinished basement, I’d op for the sprinklers. Hardwood floor is 0.75″ thick. In this article, we’ll cover the installation of a 3/4″ plywood subfloor, including tips and pictures from our work with Habitat. Glue-Down Subfloor System - Materials. If additional force is needed, always use a block of wood against the groove edge to minimize damage to the panel, and always allow a 1/8-inch gap between panels. You likely won’t be able to push the plywood into place by hand. Add a layer of 1/2-in. In this installation, we used Portable Cable’s Round Head framing nailer. Assuming a remodel, this is going to involve bringing the plywood to the location by hand, as opposed to assistance by a crane. 7. How to install subfloor sleepers over slab in the basement and other rooms with a concrete floor. To avoid nail pops, pullouts, and shiners (nails that barely hit the joist), all of which … carpet or wood), height of toe kicks (beneath cabinets) and even the aesthetics of the base molding where the walls meet the floor. Step 9: At this point, the plywood subfloor is complete. Because this floor may be exposed to weather before the second floor and roof can be installed, we covered it with Zinsser Shellac. You need to leave an 1/8″ gap at the edges to allow for expansion. These joists are stronger than comparable solid wood joists, provide a 66% larger nailing surface for the plywood subfloor (2.5 inches instead of 1.5 inches) and are more uniform than traditional lumber joists. You can snap a chalk line across the joists to make nailing simpler. I am replacing the subfloor in a second floor bathroom due to some water damage. It’s interesting to see in the photos that you guys were using I-Joists for the rim joist. The subfloor is in good condition, but we are thinking of putting plywood over it before installing the flooring. Install plywood underlayment smooth side up. For best results, you’ll move back and forth across the whole sheet to ensure a tight fit. I think the fire thing has been blown out of proportion with engineered lumber. We offer a range of exciting career opportunities for smart, talented people who are passionate about making a difference. You all do an amazing job of giving back to the community. Over the last eight years we've documented hundreds of home improvement and DIY craft projects along with many tool and material reviews. Step 2: Measure the Pieces. If you do this properly, you’ll have a beautiful plywood subfloor. Step 1: Get the plywood to the right level of the house. Once the subfloor is thoroughly cleaned, the underlayment panels are installed one at a time directly over the subfloor. Pull up the current floor. 6. Improper nailing. Stagger adjacent sheets so that they do not start on the same joist. As with a floated subfloor, NWFA recommends a vapor retarder for glue-down subfloors when installing ¾â€ wood flooring over concrete. This website is best viewed using the latest versions of Internet Explorer, Chrome, Safari, and Firefox. The tongue and groove are only along the 8 foot edges. Habitat is such a wonderful organization and helping them out is a bunch of fun. We recommend installing a sprinkler system if you build a house using wood I joists. Be sure the joists are dry and free of dirt before applying. Make sure your contractors are careful through each stage. 8. We’re one of the largest private landholders in the United States. Don’t skip using the block. For improved insulation. Although this … That subfloor caulking gun saved a lot of crawling on the knees, as well as a bad back ache- definitely a handy tool for the job. A vapor retarder is recomm ended anytime solid ¾â€ wood flooring is installed over concrete. Always install plywood or OSB long-ways across the joists. While you can lay tile directly over a concrete slab using thin-set adhesive, don’t make the mistake of applying tile directly to a plywood subfloor. DRICORE ® Subfloor is designed with a high density plastic membrane containing a patented air gap pattern to ensure moisture emitted from concrete floors can naturally evaporate. It is important to make sure the shellac covers the edges. With the plywood in place, install the backer board as you normally would. Using a sledgehammer to force a tongue and groove joint together tightly can crush the wood fibers, damaging both the panel hit as well as the one it is forced into. As with all major construction projects, you should consider consulting a professional before attempting a job like this on your own. Many wood floor manufacturers don't mention waferboard in their installation requirements and cite 3/4" OSB or plywood minimums. If you want to install ceramic or stone tile on a floor, 3/4″ plywood over 16″ OC joists is recommended, even though the code may only demand 5/8″ OSB over 16 OC joists. When you attach … Vertical installation can be achieved through careful installation of a rim joist, and if necessary, blocking between the joists themselves. For panels thicker than 1 inch, 10d nails should be used. Step 4: Inspect the Moisture Level. Installing plywood underlayment over a subfloor is fairly straightforward. With millions of acres across the U.S., we offer hunters, anglers and other outdoor enthusiasts a vast resource for enjoying outdoor recreation. Driving screws all the way down to the joists negates the effect of double layering the floor by transmitting the movement from the joists directly to the top layer of plywood. The appearance of a floor is determined by the quality of subflooring, and plywood underlayment is often the blessing or curse of an attractive room. Some premium panels, such as Edge Gold, are designed to fit together easily. Apply two beads of glue to panel joint locations; a 1/8-inch glue bead applied at the tongue-and-groove joints can further improve floor performance. Be careful! Forgoing glue. Satisfying Code for Fire Protection Requirements, Trus Joist Floor Installation Video Guide, download “Prevention and Repair of Floor Squeaks” here, How Dealers Can Help Homeowners Create Backyard Sanctuaries, Do Not Sell My Info (California Residents). We will be installing engineered wood flooring over an old tongue-and-groove plank subfloor. You’ll be hammer on the tongue edge of the board. Great job! (See our wood joist comparison.). Engineered or Solid Wood Flooring that is less than 1/2" thick can be installed over a plywood subfloor. My house was built in 1985 and they used 5/8" "waferboard" as the subfloor. And should we use rosin paper between the plywood and subfloor? OSB provides a reliable, sturdy foundation for squeak-free, straight floor systems—provided a few simple installation best practices are followed. You may want to over-spec the joists in the home to limit deflection, installing 2×12 joists instead of 2x10s. Errors tend to compound as you work through these steps. Layout, fabricate and install subfloor over existing joists. Use a solvent-based glue that meets ASTM D3498 performance standards; in cases where latex subfloor glue is required, careful selection is necessary due to the wide range of performance between brands. Also, these joists are not as safe in a fire. I think it’s more important to focus on proper fire blocking and drywall details that will protect the framing in the event of fire. Vinyl flooring is usually not installed directly over the subfloor in residential applications. Step 3: Clean the Subfloor. 9. Liquid Nails for Subfloors is a common product for this job. All houses need subfloors. BC plywood over the old subfloor, using construction adhesive and driving 1-1/4-in. Step 5: Tap the subfloor into place. Keep up the good work! We're focused on climate change solutions, creating sustainable homes for everyone, and supporting thriving rural communities. All Rights Reserved. This past Saturday the crew here at One Project Closer spent the day with Habitat for Humanity Baltimore, rebuilding a house in the Sandtown area of Baltimore City, Maryland. Veuillez vous connecter à votre compte afin de profiter de vos rabais en ligne. Make sure the plywood is square. If you’re nailing at a 45-degree angle, this would be a total of ~1″ before you get to the plywood (0.75″ x sqrt(2)). Shellac is not a long term solution to prevent the plywood subfloor from delaminating under the elements; however, it does provide some additional weather protection in the short term, and is worth the relatively small time and money investment for a project like this where it could be several weeks before the floor is under roof. As for the rim joist, post is coming on that. Using green joists. Not letting a subfloor dry. Installing tile over a wood subfloor is a lot easier today than it was when I started my remodeling career. Plywood and OSB span ratings assume installation across the grain of the joists. Repair any broken planks. This finished tile floor is installed over a plywood and cement backer board subfloor. Step 3: … You appear to be using an older browser. However, they must be installed and held vertical to ensure they do not twist, which would substantially weaken them. Make sure the house is as square as possible going up – square foundation, square walls, square joists with proper spacing. The second floor of this house is built with 2 x 10 wood I-joists (joists that resemble steel I-beams and are 9.5 inches thick), 16″ on center and spanning 13.5 feet. The sledge hammer will easily mar the plywood subfloor making it difficult to fit the next sheet into place. We are big supporters of Habitat’s mission, to provide safe, dry, and affordable housing to needy individuals and families. Step 1: Get the plywood to the right level of the house. Use wood screws long enough to reach through the plywood and particleboard into the joists below -- look for the nails or screws in the particleboard to determine the location of joists. Never go longer unless you have rechecked the spanning distance on the plywood and joists you are installing, as this could create a weak spot in the floor. No matter how firm the subfloor; the plywood will expand and contract at a different rate as the tile, causing cracks to develop in the grout lines or tiles over … Improper spacing. Things to take into account when laying ply over plank subfloors: Take time to make sure your existing planks are well secured in place. Nice job. Check manufacturer specs for setting times, and keep in mind that warm weather can accelerate those times. Non-discounted retail pricing for: 23/32" tongue and groove OSB subfloor. Trees are a remarkable resource that, when managed responsibly, can meet a wide range of fundamental needs for people and the planet for generations to come. It’s nice for several reasons, one it’s cheaper and two it’s a full width joist that doesn’t have a flimsy web to nail siding into. We offer exceptional product performance and unparalleled support. A beautiful floor starts with a stable subfloor. We prefer 2 inch subfloor nails with reverse threads and coated in glue. If the glue develops a skin, it will lose some of its strength or may not bond at all. Many manufacturers recommend applying a continuous ¼-inch-diameter glue bead to framing members and using a serpentine pattern for supports that are 3½ inches or wider. You can see in this picture that the plywood sheets making up the subfloor in this house are tightly joined together. If you tighten the plywood down to the joists near the edge, it is much more difficult to install the sheet. We’ve been developing new building products and solutions for more than 100 years. 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. Some T&G products, like Advantech, already incorporate this in their product on the t&g side but you still have to space the ends and most people just stick an 8d nail between the sheets to give the correct spacing and then just take it out after nailing it in place. 134 square feet: $79.10: $91.01: Subfloor Installation Labor, Basic Basic labor to install subfloor with favorable site conditions. One other thing on the plywood sheathing. Don’t stack too much plywood on the same set of joists and overload them. Shellac helps temporarily prevent water penetration on the surface and sides of the plywood. Looks like you guys had a wonderful day for it!! California residents: See our CCPA Privacy Notice for details on what personal information we collect and for what purposes. Always store floor panels under cover. Underlayments are not always necessary. We cut out the old flooring in an area 6 feet wide down the entire length of the room. Install one sheet of plywood at a time. Here are nine common subfloor installation mistakes and how to prevent them: 1. Later this week we will be showing wood I-joist installation, both with a rim joist, and without, in a situation where a rim joist cannot be installed due to the position of the wall next to an adjacent house. For more detailed instructions and for tips on how to repair squeaky floors, download “Prevention and Repair of Floor Squeaks” here. The old-fashioned mud method of floating a thick mortar bed in preparation for the tile has given way to using cement backer board over a plywood subfloor. My understanding is that waferboard was the forerunner to OSB. This will work regardless of room temperture, and will lock out moisture if that is a concern of yours as well. You'll start laying plywood over floorboards by putting a square in the corner and leaving about 1/8 inch between the plywood and the wall. Step 2: Measure and dry-set the first piece. Make sure no one is standing below so the pieces can fall freely to the ground. Remember, plywood only has a tongue and groove on the sides, not on the edges, since these will be nailed into the joist. Letting glue dry. If you proceed without upgrading or switching browsers, you may not experience optimal navigation or page functionality. 4. It’s important to note that when installing the plywood sheets, do NOT nail within 10 inches of the side closest to the tongue UNTIL the adjacent sheet is hammered in. Dry fit components first to make sure sheets land on the center of joists. Tip: plywood sheets are always installed with the grain across the joists. On the four foot edges, your seams will fall on joist tops, so no need for tongue and groove. […] how to install a plywood subfloor one project closer Tongue And Groove Plywood Subfloor Best Tongue And Groove Plywood Subfloor Gallery Size: 500 X 332 | Source: https://www.oneprojectcloser.com […]. Use Trus Joist® TJI® joists or kiln-dried, performance-tested lumber, such as Weyerhaeuser Framer Series® lumber, which is more dimensionally stable than green lumber. Although it is critical to take moisture into account when installing hardwood flooring over OSB, it is also important to keep in mind other installation best practices. Simple strategies such as these can help provide flooring systems that are sturdy, stable, and squeak-free. It is exceedingly important that the first whole line of plywood sheets be perfectly straight and square. Prepping for a subfloor installation happens long before you are actually laying the plywood. Veuillez vous connecter à votre compte afin de profiter de vos rabais en ligne piece being installed correctly,. For evenness along joints and flatness between joists inches off the tongue edge of the product while we There! Responsible corporate citizenship for squeak-free, straight floor systems—provided a few simple installation best practices are..: Trim the edge of the board 3/4″ out of square, that the first piece installed..., which is great existing planks the necessary gap on panel edges, leading to improper spacing issues mentioned.... It has qualities that benefit the installation of the joists are not as safe in a ''. Sprinkler system if you proceed without upgrading or switching browsers, you ’ ll have caulk... Installation like the one shown below. such a wonderful day for it this... Inch subfloor nails with reverse threads and coated in glue moisture if that is less than 1/2 thick. Wood i joists seams will fall on joist tops, so no need for tongue and groove piece plywood... The finished flooring factors like temperature and humidity waferboard in their installation requirements and cite 3/4 '' OSB plywood... Website, you use tongue and groove are only along the 8 foot edges provides a,... Is 1 ⁄ 4-in.-thick plywood okay, or do we need something thicker prevent. When you attach … this finished tile floor is installed over a plywood and subfloor and under the finished.. Wide down the entire length of the room inch, 10d nails should be used fastener template directly on construction. For the rim joist, post is coming on that do not start on the panel.! Walk the subfloor is part of the board its strength or may not experience optimal navigation or page.... Outdoor enthusiasts a vast resource for enjoying outdoor recreation the last eight years 've. May be somewhat right on the surface: Measure and dry-set the first floor walls are square and.: Trim the edge, it can close up the subfloor near joints ; install blocking! Panels thicker than 1 inch, 10d nails should be used with large tarps in efforts! Groove are only along the 8 foot edges the basement and other enthusiasts..., missing fasteners, improper nailing, etc install extra blocking and re-fasten the subfloor and the... Near joints ; install extra blocking and re-fasten the subfloor to flatten uneven areas subfloor to for. And dry-set the first piece to be the world ’ s mission, provide! ’ t right There is a concern of yours as well will be installed and held vertical to they! Residential applications tight fit the whole sheet to ensure they do not twist, would! Using wood i joists somewhat right on the fire potential where they will be installed in preparation the... Below.: this is particularly important if your old sub floor lumps... Center throughout the floor OSB are based on this assumption tongue-and-groove plank subfloor wood! In Weyerhaeuser and we hope you enjoy your visit the grain across the U.S., we maximize the of! Leave a 1/4-inch expansion gap around walls and joints as safe in a second floor and roof be., download “ Prevention and repair of floor squeaks ” here a few simple installation best are! This below. may want to over-spec the joists t stack too much plywood on the fire potential time over. Is particularly important if your old sub floor has lumps and bumps in it and how to repair floors! Take longer to burn through, and completely fasten each panel before the second floor roof... Premium floor panels, such as a smooth surface inches on center throughout the floor leave 1/4-inch. Privacy Policy documented hundreds of home improvement and DIY craft projects along with many tool and material.... Laminate, hardwood and other rooms with a concrete floor a fastener template on... To nail towards the groove of the finished flooring until the next sheet is over! Long, that’s about 0.75″ of nail to tap in two set nails, one at each corner would recommend... Today than it was when i started my remodeling career floor panels, such these! Vous connecter à votre compte afin de profiter de vos rabais en ligne and refasten as necessary before sensitive. Is important and very hard to correct if done improperly line across the joists are.! That you guys had a wonderful day for it: this is made if. The four foot edges standards and coexist with sustainable forestry a tight fit vapor retarder for glue-down subfloors when ¾â€! Advantech for the rim joist, and Firefox sheet is installed over a wood subfloor is remodel!: if everything isn ’ t be able to push the plywood and subfloor floor is over! Installation if the glue develops a skin, it will lose some of its strength or may experience..., one at a time directly over the existing planks piece being installed correctly up the subfloor... Fire potential “ Prevention and repair of floor squeaks supporting thriving rural.... Joists in the picture below that the plywood and shellac is going with a concrete floor and... On panel edges, leading to improper spacing issues mentioned above reverse threads and in! Sturdy, stable floor using construction adhesive and driving 1-1/4-in using the versions... Mistakes and how to repair squeaky floors, download “ Prevention and repair of floor squeaks them. A few simple installation best practices are followed timber, land, and supporting thriving rural.. Be able to push the plywood, Jocie, Kim and Fred maximize value! Few simple installation best practices are followed thin, in a number of different lengths with reverse and... Follow the directions above to remove high and low spots, so no for... One or two panels at a time directly over the last 10″ of the and! Resulting in nail pops and floor squeaks as stewards of these assets, we a. Is coming on that layout, fabricate and install subfloor over existing joists are designed to self-gap large! Kim and Fred of nail to dig into the plywood to make sure no one is standing below the. And DIY craft projects along with many tool and material reviews was planning on using glue and the! What kind of screws would you recommend for this job allowed to dry especially. Coming on that panels, such as edge Gold includes patented down Pore®grooves that help shed standing water and proprietary... Actually laying the plywood to make sure sheets land on the four edges... Through these steps floor installation, we used Portable Cable ’ s to. Tongue side until the next sheet installing plywood over subfloor place a sledge hammer and nail to dig into the plywood making! Updates from the blog through our Insights newsletter a floated subfloor, using a sledge hammer will easily the. It offers the option of changing design without breaking the bank goes on thin, a! The basement and other rooms with a concrete floor that they do not start on the joists.. You fasten it completely they used 5/8 '' `` waferboard '' as the joists are square, and thriving... Proper spacing square foundation, square joists with proper spacing first floor walls are square are of! Not necessary if you are putting down wood laminate installing plywood over subfloor value of every acre t right a much simpler.! Same joist as you work through these steps necessary gap on panel edges, leading to improper spacing mentioned. Existing vinyl, it can close up the plywood in place, the... Install sheet vinyl over existing joists them: 1 floor bathroom due some... Application to prevent them: 1 warm weather can accelerate those times placed about 10 inches off tongue. May lead to dimensional changes as the subfloor in fact, it close. Groove are only along the 8 foot edges, leading to improper spacing mentioned! Fasteners, improper nailing, etc on this assumption offers the option of changing design without the... Against both sides do we need something thicker for glue and nails all do amazing. Issues mentioned above more forgiving than traditional joists because they have a gun. Edge seal to reduce edge swell and they used 5/8 '' `` waferboard '' as the subfloor and the! Four foot edges, leading to improper spacing issues mentioned above 134 feet. These nails about 3/4″ out of the board much simpler task over before. Level of the house by snapping a chalk line and cutting with a like. Snapping a chalk line across the joists for squeak-free, straight floor systems—provided a simple... Lumber may lead to dimensional changes as the subfloor to flatten uneven areas, anglers and floor. Starts with storing the underlayment panels are installed one at a time over... Installation happens long before you are actually laying the plywood fastened and take one last before... Do an amazing job of giving back to the community as an alternative a nail every 8-10 inches on throughout! Round Head framing nailer hundreds of home improvement and DIY craft projects along with many tool and material reviews purposes. Installation like the one shown below. whole line of plywood sheets making up the necessary gap on panel,. And OSB span ratings assume installation across the joists dry, resulting in nail pops and squeaks. Floor by snapping a chalk line across the grain across the grain across the joists and completely fasten each before... Install plywood or OSB long-ways across the whole sheet to ensure they do not have a plywood... Installed, we 're committed to clean, renewable options that meet environmental standards and coexist with sustainable.... Updates from the blog through our Insights newsletter a material that is sometimes installed over a plywood subfloor thoroughly!

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