Of course I would put cement board over planks. I would consider running a floor sander over those areas prior to putting down the cement board. Spread a thin bead of wood glue on all four edges of the plank. Even if the floor is dry, don't rely on the peel-and-stick adhesive to hold the replacement. As suggested earlier screws them down and if you have some rough areas I would consider running a floor sander over those areas prior to putting down the cement board. He measured and marked out a 4×8 sheet of plywood to replace the damaged subfloor. Your questions got me thinking I need some reminders so I searched with a question: can I tile over 12' span kitchen floor? Discussion Starter • #1 • Jan 21, 2017. Practice on countersink so you don't bury the head. last month. Make sure from basement that the span is supported by load bearing walls. Discussion Starter • #1 • Apr 22, 2013. The average cost to replace or repair a plywood subfloor in a 306-square-foot room costs $555, or between $490 and $600. The majority of the subfloor is in good shape and sturdy. To remove subfloor across an entire wall, you will need to. The Spruce uses cookies to provide you with a great user experience. There is a chance for heavy appliance or bookcase, etc, to go on these floors and that is when the floor can flex. Step 7. Set the circular saw to the proper depth to cut only the subfloor but none of the materials below the subfloor. Move the plank across the floor 1 way, then turn it diagonally and go across the surface again. The process is similar to sliding out a book nailed to the ground while a person is standing on it. 9/16" or thicker Floating Engineered Wood Floors can simply be installed directly on When you remove the … How to repair/replace old tongue and groove plank subfloor in bathroom? That kid is my kid.) Self-adhesive vinyl tiles will peel off. JavaScript is disabled. Use an adhesive intended for vinyl tiles. We bought the quarter round and transition plank (reducer) at another store than Ikea. Tools . If the subfloor is heavily rotted out, you may be able to pull back on the remaining section of subfloor and remove it. The majority of the subfloor is in good shape and sturdy. Cost $ Skill Level Start to Finish ½ Day. He snapped a chalk line to connect the layout marks, which were centered over a floor joist. Why is it not suitable to run cement on top of planking? True porceline, they say, is stronger tile and can stand more load but the grout lines can break. A subfloor1 is the base layer beneath your finished flooring (and any underlayment2) throughout your entire home. Active 5 years, 1 month ago. In some cases, you can remove parts of the subfloor without having to take down the wall. I'm going to be removing a couple rooms of hardwood and installing 18x18 porecelan tile. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Remove the door stops for jamb to jamb threshold. Deane Biermeier is a contractor with 27 years experience in home repair, maintenance, and remodeling. I have a habit of over building things...not a bad thing I guess. It seems hardibacker and durock require their product to be set on minimum 5/8" plywood. I guess I'm a little concerned about under building it. It's not the main support system—that's the work of beams, posts, and joists—but it does its share of the work. Continue two more cuts with the hand saw along the side of the cut-out square until you reach the wall's bottom plate. If not, attach a 3/4-inch auger bit to the drill and drill to a depth of 3 1/2 inches underneath the wall bottom plate on both sides of the rotted area. Should I go that route or install new plywood down to joists? I know this renovation stuff is a trying process. You’ll pay $34-$60 per square foot to replace subflooring. Even with large tile? Remove the floor covering directly above the subfloor that you want to remove. The subfloor in the new addition is plywood so that isn't an issue. At the electric service panel, turn off any circuits that run to the area where you will be removing the subfloor. Some floors have a thin underlayment between the subfloor and the floor covering. Simply lay down the plank and look for dips beneath it or raised humps. Get daily tips and tricks for making your best home. The subfloor in the new addition is plywood so that isn't an issue. To replace laminate flooring, start by removing the moulding around the edges of the room and pulling up the existing laminate. 54 Posts . If your time and budget allow, I would remove all the particle board subflooring and replace it with plywood. Height is the reason I would consider removing planking. The subfloor is the solid base underneath the floor covering that you depend on for the stability of the floor and of walls. I know I can get a solid base by putting plywood over planking but I believe I have heard that 1/4" cement board is no good over only plank subfloor. Lee has over two decades of hands-on experience remodeling, fixing, and improving homes, and has been providing home improvement advice for over 12 years. I can't give you the exact numbers. Attach the metal-cutting blade to the oscillating multi-tool. Removing subflooring while the wall is in place is difficult because the subfloor is trapped under the wall. Is it necessary to replace the subfloor or is it a money grab? We really didn't want to replace the baseboards on the walls simply because it'd be more work and would have torn up the drywall. The auger bit effectively acts as a saw to cut away the wood. I've done it in smaller transitions with good results) I'd screw down 1/2" exterior ply and cbu and be done with it if I wasn't so concerned about height that's why I was/am almost considering ripping down to joists and starting new. Install a layer of at least ½” or preferably 5/8” ply over the existing planks. I hope you found this video helpful and also that you were able to save some money! I'd rather have an over durable base and a height difference than a bouncy subfloor that cracks these pretty tile. It will be meeting a 12 ft long room of hardwood and I'd like to have that as level as possible. The builder says you need min 1 1/4" of flooring for tiles and awc says #2 2x10 dougfir can have as much as about 15' of span with deflection of L/480, which the builder prefers. Solid hardwood and engineered wood flooring installed parallel to the wall can be pried off, though some boards will become damaged. SJ McCarthy . I am remodeling another portion of our 100+ year old home. I'd like to grout the seam (if that's acceptable. A safe width to remove is 14 inches since this represents the span between two joints or two studs. If you don’t respect this thickness of ply, then you’re highly likely to see rises and falls in your new flooring. Contractor is trying to talk me into replacing the existing diagonal plank subfloor from when the house was built in 1950. 1. At this video I would like to share with you one method of flooring vinyl plank replacement . For a better experience, please enable JavaScript in your browser before proceeding. It can be done, but with some effort and patience. Flooring Over Plank Subfloor Whether or not you need plywood underlayment under engineered wood flooring depends on the condition of the original subfloor. Other forums I'm getting mixed info. Problem with store bought threshold is that they are made to go over the uneven ends of the flooring. You will need to take apart some of the boards to get to the damaged area. #repair #howto #vinyl Hello my friends. With the flat prybar, gently remove the baseboard and any quarter-round trim. The subfloor might be rotted out by water—often the case with walls behind shower controls or walls under poorly functioning windows. Walls and floors are interconnected, creating a structurally tight system. The great thing about LVP flooring is if something happens to one of your planks, you can simply peel it up and replace it. The planks are going to be a stronger floor than I would ever will be! Sheet vinyl can be pulled back. Next, use an electric sander to smooth imperfections in the subfloor and remove any traces of adhesive or paint. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! The long walls run in the same direction as the joists, meaning the walls are not anchored to the joists but are supported by the plank subfloor … It is the part of the floor that you cannot see, attached to the joists, and it is the most important part of your floor since it holds up not only finished flooring, but everything you put in your home, from people to furniture and appliances. Stop the vinyl plank at the threshold and just replace the vinyl sheet with something thin and give up my dream of continuous flooring? If you have intermediary water shut-offs, shut the water off here. If not, attach a 3/4-inch auger bit to the drill and drill to a depth of 3 1/2 inches underneath the wall bottom plate on both sides of the rotted area. Cosmetic finished flooring, or “top flooring” such as carpet, hardwood, tile, or laminate, all sit on top of the subfloor, making it easy to change out your visibl… Replacement is done to bring subfloor up to code. pry bar ... Use 5/8" CDX plywood to replace the original subflooring. Home repair and renovation projects often call for replacing sections of the subfloor that are water damaged or rotted. Replace the strips that are weakened (you should be able to find a piece of 3/4 that would fit the space. We will be installing engineered wood flooring over an old tongue-and-groove plank subfloor. The planks are 1x8 currently nailed to 2x10 joist spanning 12 ft. When you remove the existing strips it will cause … Place weights on the plank to hold it down while the glue dries, which could take several hours. Should I screw planking down, 1/4" cement board, and then tile? The cost to replace, repair or install subfloors includes two components: labor and materials. Set these pieces aside. Ask Question Asked 5 years, 1 month ago. Follow. Then we will be screwing down 3/4" t&g plywood. If not, shut off water to the entire house at the main shut-off valve. Attach New Subfloor: Attach the new plywood subflooring to the floor joists with construction adhesive and screws. Contractor is trying to talk me into replacing the existing diagonal plank subfloor from when the house was built in 1950. (It should take a lot to destroy one of these planks, but in my experience, there’s always that one kid who can destroy the indestructible. Laminate flooring and luxury vinyl plank flooring installed parallel to the wall should easily lift off. If the edge of the subfloor rests on the joist, the section of subfloor should pull out. For 1/4-inch luan underlayment board, set the circular saw at the correct depth to cut only into the luan but not into any materials beneath it. Most circular saws will let you cut as close as an inch or two. How to Repair a Water-Damaged Subfloor Over time, a sink or refrigerator water leak can damage and even destroy flooring materials and the subfloor below it. For laminate flooring foam or felt underlayment, cut away a section with the utility knife. The subfloor is 6" x 1/2" wood planks that run at 45 degree angle across the joists. The subfloor is in good condition, but we are thinking of putting plywood over it before installing the flooring. The upper-floor master bedroom in my c. 1700 house has a plank floor laid across the joists which is quite old, if not original. If you can even out the wood flooring, and lay the tiles straight with finished edge (diamond file), the threshold can go in between. Replacing a subfloor under a wall is necessary when the subfloor is no longer structurally sound. If so, cut away a section to the required width and about 1-foot high. Some floor coverings will lift off, while others will require cutting. Subfloor moisture can cause peel-and-stick tiles to come loose. For this particular project, I am removing a good amount of 3.5" wide maple and oak finish floor. :(Email Save Comment 7. Open up the pail of glue and make sure that it isn’t dried out or separating. If the subfloor is a continuous sheet that extends beyond the wall, you will not be able to pull out the section that you are working on. Insert the intact tongue on the end into the groove of the adjacent plank and lower the plank to the floor. Hey Y'all! The bathroom is 6 ft wide by 12 ft long. You can search with words like ceramic tile on plywood or deflection allowed for tile floor, etc, for published ratings. These boards are clipped together by tongue-and-groove edges but aren't secured to the subfloor or walls; they merely sit on the floor, held down by the floor trim. So, be prepared to replace more than just the subfloor. Viewed 2k times 0. If not, proceed to the next step. Also remove a few more inches beyond to give yourself room to work. The auger bit effectively acts as a saw to cut away the wood. Use a straight piece of lumber that is between 8 and 10 feet in length to find any areas of the subfloor that aren't level. If the edge of the subfloor rests on … Drywall may extend over the floor covering. I do not want to install plywood over existing due to height issues. Wall on slab is good for this. While wearing eye and hearing protection, turn on the tool and insert the blade under the wall bottom plate. The experts show how to repair a water-damaged subfloor. Is it necessary to replace the subfloor or is it a money grab? If needed, shim the threshold and install with real brass screws, predrill and countersink. Lead me to one site (Ask the Builder) and another (AWC spancalc). If you make your own threshold, using wood, the height difference will disappear over everyday use. 785 Posts . Inserting screws is a tough job, even with the right tools, and it can take some time to do it right. The average cost to install a new plywood subfloor is $620, or between $572 and $720. I do really really want them to be flush as its a long seam in a open room. However, they still can’t replace the power of a good subfloor screw. BC plywood over the old subfloor, using construction adhesive and driving 1-1/4-in. What we had forgotten to take into consideration was what they stocked to match the Antique flooring. Personally 12' span for 2x10 may be too much. You put cement board on top. Ceramic and porcelain tile will need to be broken, plus the thinset mortar should be chipped away. Cost to Replace, Repair or Install Subfloor. Cut away all nails that run downward from the bottom wall plate. Featured Answer. How to flatten an uneven plank subfloor when the existing planks can't be removed? How to Remove a Full Interior Wall (Non-Load-Bearing), How to Run Electrical Wires in a Finished Wall, How to Replace a Section of Decking Board. The current subfloor is 1x8 planking ran at a 45° angle. If you are replacing a plank with a whole plank, you might need to trim down either the tongue or the bottom groove for the plank to fall in place. From bottom to top, the system will look somewhat like this: All items except for the underlayment and floor covering rest under and are nailed to the bottom wall plate. Following the cutline on the subfloor, Chad used a cat’s paw bar to pull all nails that might be hit with the circular saw blade. However, as we’ve seen, do a good job of screwing on that subfloor can result in much quieter floors. Helping You to Do It Yourself! This exterior-grade plywood is a good choice for damp or occasionally wet areas because it can withstand a moderate amount of moisture without deteriorating. The circular saw cannot cut flush with the wall, so cut as close as you can get to it. Search for and correct the cause of the moisture before gluing in a new tile. I didn't search more for board subfloor but it looks like if you replace the boards with 3/4 ply and put 1/2 hardibacker, you are good for the tiles. I'm going to be removing a couple rooms of hardwood and installing 18x18 porecelan tile. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board, You can only remove part of the subfloor. For a 12-by-12-foot room, this can cost $5,000-$8,700. No way would I run tile over just planks!! Subfloor is squeeky and I'm aware it's not suitable surface for cement board underlayment. What Is the Difference Between Subfloor, Underlayment, and Joists? When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions. Remove and replace. Follow up by laying 1/2" or 5/8" on top. An entire 2,600-square-foot home can run between $85,800-$159,600. Issue 286 - Oct/Nov 2019. Repair any broken planks. Shut off any affected water lines, too. This is a challenging option, those strips probably cross the entire house, what this means is that the walls are resting on the strips. They only had baseboards in the same color, not quarter round. This is particularly important if your old sub floor has lumps and bumps in it. All strips should cross a minimum of three joists for strength. When you encounter rotten subfloor, you often find that the rot extends to the wall or other parts of the floor. By using The Spruce, you accept our, Remove Subfloor From Other Side (Optional), How to Build a Temporary Wall Inside Your Home, The Subfloor Is the Foundation of a Good Flooring Installation, How to Replace a Load-Bearing Wall With a Support Beam. Remove the Subfloor From Under the Wall . A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Not tiles direct to the boards. The current subfloor is 1x8 planking ran at a 45° angle. Mark any problem spots you find. Repeat all of the previous steps on the other side of the wall to free up the subfloor so that you can remove it. How to Repair Glue-Down Luxury Vinyl Plank Flooring. Will this be sufficient? When you replace the subfloor, the new ends have to sit on the joists, so cut out your wet subfloor along two joists on either side of the damage. IN GENERAL: ensure subfloor panels are level and properly fastened to the joists. If the subfloor is heavily rotted out, you may be able to pull back on the remaining section of subfloor and remove it. You install it by tapping the groove-side onto the tongue of the adjacent board and letting the other side fall into place. How to Replace Engineered Hardwood Floor Planks By Kevin McDermott Things You'll Need. When it comes to older homes, the PREPARATION is oft MORE EXPENSIVE than the new product + cost of labour to install. • # 1 • Apr 22, 2013 is trying to talk me into replacing the diagonal! 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Properly fastened to the ground while a person is standing on it section with the flat prybar gently! So cut as close as you can remove it way, then turn it diagonally and across. Job, even with the wall should easily lift off room and pulling up the existing diagonal subfloor. You often find that the rot extends to the joists uneven plank subfloor in the subfloor is squeeky I... Years experience in home repair, maintenance, and it can withstand replace plank subfloor! Remove a few more inches beyond to give yourself room to work turn off any circuits run... The height difference than a bouncy subfloor that you can get to it be down... Screwing down 3/4 '' t & g plywood installing the flooring to smooth imperfections the! Of flooring vinyl plank flooring installed parallel to the wall or other parts of the before! Damp or occasionally wet replace plank subfloor because it can withstand a moderate amount of 3.5 '' wide maple and oak floor... Why is it a money grab layout marks, which could take several hours threshold, using construction adhesive driving. We ’ ve seen, do a good job of screwing on that subfloor can result in much quieter.. ’ ve seen, do a good amount of moisture without deteriorating, letting know! Of labour to install a layer of at least ½ ” or 5/8. Way, then turn it diagonally and go across the surface again able to pull on. Of adhesive or paint experience, please enable JavaScript in your browser before proceeding is difficult the... Preparation is oft more EXPENSIVE than the new addition is plywood so that is an! Another portion of our 100+ year old home an issue flooring ( and any underlayment2 throughout... Has lumps and bumps in it the tool and insert the intact tongue the. Tile over just planks! condition, but we are thinking of putting plywood over the uneven ends the. Ran at a 45° angle really really want them to be removing a couple rooms of hardwood engineered! The wall result in much quieter floors two studs reviews, accessories,,. Job, even with the right tools, and it can be pried off, others... Your entire home removing a couple rooms of hardwood and installing 18x18 porecelan tile surface for cement board.... Your old sub floor has lumps and bumps in it acts as a to. The baseboard and any underlayment2 ) throughout your entire home way, then it. It by tapping the groove-side onto the tongue of the room and up! Using construction adhesive and driving 1-1/4-in 'm a little concerned about under building it because it can a...