Fortunately, repairs can be made to these subfloor types rather than fully replacing them depending on the amount of damage to the subfloor material. I skipped this step because our subfloor was far from smooth. Muchas gracias! I plan on installing glue down Bamboo flooring after following your lead. I wanted a vent in the pantry so I  moved the HVAC ductwork over about 18″ — which was a helluva lot of work to accomplish! I used a scraper and lightly hammered any spots that sounded hollow underneath to loosen any weak pieces. Badly damaged particle board may have deteriorated so much that it has to be scooped out with a flat shovel. 1. Clean out your bucket and trowel with LOTS of water. What was left was a plethora of problem areas. I’m so impressed!! The first step is to put some “dead wood” underneath the hole so you have a way to secure the patch. It looks pretty flat now, though. I live to break stereotypes and empower you to take on your own DIY project. Whether you have to scrape or use a paint thinner. Challenging but not impossible. Try to pour a consistent amount in each area. Use 1-1/2 in. Thank you. I wanted to use the largest pieces of wood I could fit between the joists under the subfloor to disperse over the largest area possible any weight that will eventually be put on this patch. Mapei and every pdf manual I have ever read for a self leveling compound similiar has had that requirement: no contaminants in the slab. The smaller one won’t accept the mixing paddle. The kitchen, it’s still a blank canvas. Here’s how to go about patching a wood floor in your home. Whether you fix sections of subflooring or replace the whole expanse, it’s a big project. May I ask what brand you were using? We are well on our way to putting Humpty Dumpty back together when it comes to our mudroom and laundry room. Actual projects built using Sawdust Girl plans may be published on your own site without instructions or "tutorial" as long as you provide a link to my original post with full post title or "SawdustGirl.com" as link title. LOL. You can do it! Steve, the foam insulation can be pried out. Once all the subfloor panels are secured, your contractor can begin the process of installing the carpet. Thanks for this tutorial. Make sense? Cut rigid foam insulation strips with a utility knife to use around the perimeter of the room. To create an expansion joint as the leveler expands and contracts with heat and cold. Remove Damaged Subfloor: Use a flat pry bar to remove the damaged particle board. Glad I could help. We’re in NC where humidity is usually a little higher. . Hi , Brittney: One person can mix the next batch while the other is pouring and spreading. This is a great article but it seems to be missing something. You know, if you care that much if you have a clean, tight patch in the subfloor — which will be covered with flooring. The first piece I was able to hold with one hand while I secured it with clamps. The self leveling liquid will dry lighter and to a matte finish. Since this was his first attempt at using the self-leveler, he decided to just go by the directions and give it a go. Ugh. 99% of the time I would be happy to allow you to use one photo with appropriate credit and link back to PrettyHandyGirl.com (preferably to the same post it was borrowed from.) Do you think a color can be added to the leveler mix. Great How-to article. So remember how I moved the floor vent when I built my new pantry? Install the blocking first. See typical tasks and time to repair a subfloor, along with per unit costs and material requirements. If you have carpet, that can be patched so you could patch the subfloor without removing more carpet. And then you’d have it flaking up and pocking. To patch a hole in a wood floor left by the removal of a floor furnace grate – such as we had in the Kuppersmith Project house – start by installing floor joists across the opening, followed by a subfloor, felt paper, and flooring. After reading this and looking at the great photos, it is giving me the confidence to actually do it. I’m just focusing on patching the subfloor in this post to keep it simple. It is recommended that you rough up the concrete. Or else what does the edge look like?? We purchased most of the supplies from Lowe’s and borrowed a large drill. Some of it stuck to the leveler, but it doesn’t get in the way and you can scrape enough out. Kuddos to you!! It is recommended that you rough up the concrete. Otherwise the leveler’s bond to the subfloor is only as good as the weakest contaminant. I noticed in the photos it looked like you had a really good mix by following the manufacturer’s instructions. You also want to make sure that you know why the hole happened in the first place to prevent it from happening again. I just poured my powder room floor, which was exactly the opposite of flat. The first step is to put some “dead wood” underneath the hole so you have a way to secure the patch. I see someone asked about the small amount of prep work that overlays ask for. Is that too much prep considering we have to use a primer? I was wondering about saving a step for the staining. Later this week, I’ll show you the next steps we took to install our tile flooring. Please contact me if you would like to borrow any media (photos, video or audio files), tutorials, or ideas from this blog. Pouring and spreading the leveler is easiest to do if you have a partner (especially if you have an area that will require more than one bag of leveler.) Plans and information published on SawdustGirl.com may not be reproduced, republished or distributed in any manner without written permission from Sandra Powell, Sawdust Girl. Please enlighten me! Dec 29, 2019 - Explore Bob McIntosh's board "Subfloor repair" on Pinterest. If you wait more than 24 hours it will be necessary to reapply the primer. Start by completely removing the damaged materials. Slowly pour the powder into the water and mix it with drill and a mixing paddle. Before putting down any new flooring, we had to have a smooth and level surface. Secure the plywood to the subfloor at 6-inch intervals with 1-inch deck screws placed along the edges. I couldn’t use the clip without the risk of the viewer’s getting motion sickness ;-(. Brittany, I hope I can answer them ;-). Get fair costs for your SPECIFIC project requirements. I was following the directions on the self-leveler I used. Set all screw heads slightly below the surface. Pour immediately. But, it will be much heavier! It might save your back and allow you to work into the wets areas. Build like a Girl®. Required fields are marked *. Dan, thanks for your comment. Drywall mud and such needs to sit and mix a bit more. Use a pry bar to remove any protruding nails and vacuum up the demolition debris. Nothing you repair will last if water continues to seep through to your subfloor. I’m hear for any questions you have. My husband and I tried to level our hallway floor about 4 years ago when we were getting ready to put hardwood floors in. Trim (as needed) and place the next sheet in the first row. January 7, 2013 Brittany Bailey 35 Comments. Or can we just lay the self leveler overtop? You can, but will ultimately have to remove it to add baseboards and shoe molding. I did see that the pros wear cleats so they can walk in the wet areas. Wedge shims between the joist and subfloor, and use a clawhammer to tap them into place. I guess that if you lived in a very dry climate you might need to add more water. . But I got it done and now have a nice cool pantry… At least now I can show you how to patch subfloor! See more ideas about repair, toilet repair, home repairs. Actually I did have someone shoot video, but my cameraman was too shaky. Although it is my intention to provide accurate plans and clear instructions, not all plans have been tried and tested. Fasten the new subfloor patch in place, screwing all edges, including the old floor, to joists and 2x4 blocks. I wanted to use the largest pieces of wood I could fit between the joists under the subfloor to disperse over the largest area possible any weight that will eventually be put on this patch. I’m thinking of attempting to level a whole room by myself. But, you might want to have a professional contractor take a look at it first. The slab is supposed to be rough, but it is also supposed to be clean and free of contaminants like: paint, old concrete sealer, linoleum underlayment/glue, mastic, thinset etc. . Once it’s clamped tight, secure that puppy with screws. When determining how to fix squeaky floors, start by shimming the subfloor, if possible. Let it sit for 2-3 minutes. 2. Let the concrete filler dry before continuing. Did the team grind the whole floor down to get rid of the glue and other left by the linoleum? The mix will be soupy like tomato soup when it is properly mixed. Especially because it sounds like you aren’t using it very thick. Waiting too long to repair the subfloor in your mobile home could result in an unsafe hole in the floor. A common problem with replacing sub-floor is how to provide adequate support of the newly formed and installed flooring edges. An underlayment is a thin layer of material sandwiched between two other materials. If you’ve decided it’s time to replace your subfloor, make sure to fix the source of your subfloor damage as well. Much appreciated. Using a paint roller, roll the primer onto the floor and wait for the primer to dry per the instructions on the bottle. And, adding a handle to the side will help mix the heavy self leveler without it taking you for a “spin”. Using plans or information found on SawdustGirl.com indicates that you agree with the Terms of Use policy and will accept full responsibility for the process and outcome of any project you attempt. It is important to work into the wet edge or you will create ridges and bumps. Sometimes, subfloors made of wood types like plywood or oriented strandboard (OSB) can become damaged by external factors like rotting or water damage, which may require subfloor repair. screws spaced every 6 in. Renovation, cabinet building and woodworking plans and tutorials. Screw it down with 2-inch wood screws. Yes, after your flooring is installed you will add baseboards and shoe molding to finish off the room and hide the edges. With wood floor, you generally have to remove more than what you need to patch before you start laying new pieces. Big projects like this scare me – I like having a detailed “how-to” post. However, if there is no access from below, you may have to remove the subfloor paneling first before you can set the blocking in place. Over a large area, it will fill in cracks and holes, but if you pour more material in a corner area and less in the middle of your room, you could end up with waves or bumps on your floor. From what the spec sheet says it sounds like I have to remove ALL thinset from old tile and glue from linoleum. I am impressed with everything you have posted about this! Repairing Water-Damaged Subfloors: Your 8-Step DIY Guide Using the self leveling cement was just too intimidating for me because I knew that any mistake would be permanent……lol. Use an underlayment, floor leveler or floor patch product to fix low spots in a wood or concrete subfloor. Tim, I don’t think they did grind it down. Suzy, wow, how odd that the exact mixture didn’t work out. And to prevent the self leveler from running into any cracks or through doorways. If you continue to use this site we will assume that you are happy with it. hole filling, hole repair, Home & Auto Maintenance, renovation, repair. You might even drop a couple pieces of wood into the “Void” before you get it. Maryville TN House Tour – Completed Rooms, Built-in Wine and Beverage Refrigerator Cabinet ». Jul 10, 2015 - I had to remove flooring in order to move the floor vent when I built my new pantry. Cracks, crumbled concrete and an uneven surface resembling the moon. I like the smell of coffee and sawdust in the morning. But, only to a certain extent. We both swore that day that we would never attempt to do that again. Subfloor repair is necessary any time the subfloor is weakened. The labor costs for a professional to work on subflooring are usually between $25 and $30 per hour, but it will vary based on your location and if the job is particularly complex.Cost for materials will depend on what type of material you select. Or clean up the original hole so it’s a true rectangle to match your patch. If you are sure that the termites are gone you could possibly patch the floor by gluing 3/4" plywood or 1x(whatever space you have). Spread construction adhesive on the edges of the exposed joists and set the new subfloor material in place. Apply a primer to help the leveling material adhere to the concrete subfloor. I don’t plan on laying a floor over the concrete (I just plan to glaze it)… It seems like I will NEED to put down baseboards, right? But, I understand that it can be intimidating. A DIY Blog Empowering You to Complete Your Own Project. See professionally prepared estimates for subfloor repair work. Fasten the sheet to the floor joists with 2 1/2-inch screws driven through the old subflooring and into the joists below. Hello and good job on a quick fix! This site uses Akismet to reduce spam. Not self leveling underlayment as used in above article. You make it look so easy!! Awesome, awesome instructions! When Repairing Damaged Subfloors, Always Find the Source. Drive a screw every 6 to 8 inches along all of the joists. Cut Damaged Subfloor: Set a circular saw to the proper depth, so it cuts just through the thickness of the particle board, and make the cuts. It can also serve as a vapor barrier. Would you recommend that I fill those holes with concrete first…then after drying…cover with the self leveling mixture? Self leveler will do as it says, it will self level. Really, we would cut half way on the joist, install 2x4 blocks horizontal between the joist under the subfloor halfway on the edge of the existing subfloor to tie the sheets together, then install the subfloor. Pretty Handy Girl is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. I’m so glad you posted this, Brittany! Thanks Ben. It was a complete mess and some of the concrete leaked into the garage in a big puddle. Ok one additional question already – there is a thin layer of carpet adhesive in a few areas of the floor, do you think this needs to be removed? Concerned that the 2-3 in. Does it just pull straight out, or do you have to cut it or scrape it, or…??? Getting the other end blocked up can be challenging because you won’t have as much room to get your hand in there to hold the wood while you clamp. Use painter’s tape to secure the insulation around the perimeter of the room. If you can access the floor from underneath you should be able repair the sub floor without having to pull up your refinished flooring. This is the best DIY tutorial I have seen on this topic so I might be back in touch with additional questions once we get started! Congrats to you for your success. First remove any loose and chipping concrete. Plywood can splinter at areas where it’s damaged or when glued-down flooring is removed from a plywood subfloor. First remove any loose and chipping concrete. After the water leak, the linoleum flooring had to be removed. We have noticed that our home has some foundation issues along with other things that are happening. And here’s how we did it: The picture above shows two drills. Great job!! This time, we plan to lay tile though. Thanks so much!! was removed by an asbestos abatement team and the mold remediation guys. Mary-Beth, that does sound like a good plan. Work into the wet pour with your next batch until you have finished leveling your area. Super good to know! All images and tutorials on this blog are copyrighted material. I recommend always following manufacturers instructions. When the bag is empty and the mix is completely mixed. Learn how your comment data is processed. That’s ok! Before pouring the self leveler there is some prep work required. Your email address will not be published. Then sub floor. I neglected to fill this crack in the floor and literally poured 2.5 gallons of leveler into it before creating a little dam to stop all the leveler from pouring into the hole. I am suprised because I have always had to add a little extra water to get it to spread quickly and evenly. I did vacuum it up the best I could. The cost to Repair a Subfloor starts at $36.89 - $56.75 per square foot, but can vary significantly with site conditions and options. To secure the panels, a special subfloor adhesive will be added to the floor joists, and each panel will also be nailed down anywhere it touches a floor joist. He followed the directions for the amount of water to add, but the consistency never got soupy enough. My gut would say that it might be a little too thick for the 1/4″ space usually left for wood floors. Adding a self leveler was the best answer to the problem. Once the board is free, pull it loose from the groove side of the next board. And, if you are doing a whole room, maybe rent a small cement mixer? Watch and learn how to keep your house looking sharp. Let the leveling liquid dry overnight before walking on it. I’ve been wanting to do charcoal and thought this would give a thorough coloring. Learn from my mistake, be sure to seal any large cracks in the concrete, or you’ll be doing the job twice. Hammer the new piece of plywood in place with 8D common nails (every 6 inches) being careful that you are nailing into the board you screwed into the floor joist. I’d remove it as best I could. I can be contacted via email: PrettyHandyGirl (at) gmail.com. Patch and Level a Concrete Subfloor Preparing the concrete floor: Before pouring the self leveler there is some prep work required. The linoleum, etc. Then mix it again and begin your pour. Shannon, I only used the insulation to keep the self leveler from seeping under the walls, etc. That’s why I don’t have a tutorial describing that process. We don’t have any issues with it, but there is also a cork underlayment, radiant heat wires and then tiles on top. Now we have to rip up the flooring that is there and re-do the whole thing. Hi, I'm Brittany aka Pretty Handy Girl. Leave a 1/8-inch gap between the ends of the sheets. Home Mender. So glad to hear this Debra! I’m looking to do a similar process to a 1200 sq. Randy, I used Mapei brand. Immediately pour the liquid in 4′ sections and trowel it out, pushing more leveler toward any low spots. Can you talk a little bit more about removing the insulation? You need a drill with a larger opening. It’s also a situation that needs to be addressed as soon as possible. Speaking of cracks, be sure to seal any large cracks with concrete filler and sealer. The rigid foam looks like the handy idea, I will check it out. UNLESS, your floor isn’t level and the liquid pools to one wall. house. Insert the pry bar beside or under the nail locations on the first board to lift it from the subfloor. I used a scraper and lightly hammered any spots that sounded hollow underneath to loosen any weak pieces. The insulation serves two purposes. I appreciate you explaining that it really depends on the type of floor that you have when you are deciding on whether you need to pull up the flooring or not. If your subfloor is accessible from underneath, the process of reinforcing it is a quick one. Fill a 5 gallon bucket with the amount of water called for on your bag of self leveler. Pour a small amount of primer into a paint tray. The cost to replace, repair or install subfloors includes two components: labor and materials. This is probably in here somewhere, but how do you actually remove the insulation board? After patching the subfloor and restoring the underlayment as shown in the photos, it was time to glue and nail down a second very thin underlayment (1/4 in.) If rainwater is the problem, find the exterior cracks where water seeps in and re-seal them. I also learned you have to add the mix to the water, not vice versa. If you’re worried about sealing up that crack around the patch you could caulk it. How to fix a hole in the floor - subfloor repair DIY - YouTube It's used to help insulate, absorb sound and reduce wear on your floor. It turned out terrible. We use cookies to ensure that we give you the best experience on our website. It looks to me like it’d be in there pretty good between the tape and new concrete. Kendra, I’m not sure. Now I can show you how to patch subfloor! If you are just skim coating, you probably don’t need it. Thanks Britany! Tim Carter, of Ask the Builder, demonstrates a very simple way to repair a hard to reach subfloor by squaring up the opening. I have to repair a bathroom concrete subfloor that has cracks AND chunks of concrete missing that reveals the wire mesh underneath. Here’s how to fix a few common types of subfloors: For plywood and OSB (oriented strand board) over joists: First, make sure that the joists are even and not the cause of the problem. I’d recommend contacting the manufacturer. Shannon, DEFINITELY! Using both adhesive and nails will prevent squeaky floors in the future. Then, measure the difference between the high points and low points of the floor. Wrapping up the subfloor in the adjacent bathroom required an interesting puzzle piece to bridge the floor joists, to match the diagonal shiplap of the existing subfloor, and to accommodate a toilet drain. I don’t. It’s better to get anything that might affect the adhesion of the self leveler up than find out later that it didn’t work. We have a bathroom in our basement that my hubby used self-leveler on before he applied vinyl flooring. OK yes, I think this makes sense. How to Patch and Level a Concrete Subfloor. The dried primer is tacky to the touch. Without addressing the root cause of the damage, you’ll eventually need to replace your entire subfloor all over again. Drill with a large chuck and attachable second handle. But, I knew I was going to put down tiles on top of that floor so I figured it should be fine. For further protection, mount an awning or gutter over these spots to prevent excess rain from leaking in. It is also laborious work hauling those buckets around. Hopefully you won’t have much leveler to dispose of. Maude, nothing is permanent except the earth and sky, right?! Good advice except when done mixing do not let mix sit. Depending on what type of finished flooring you have, you may or may not have to remove more of that in order to patch it. Reinforcing the subfloor with blocking adds strength to the surface, simply by stiffening the floor joists. Make sure there’s about 1/8″ between the sheets of plywood to allow for wood movement. Can I leave the insulation in place to act as a spacer shim to do this? Then underlayment, if any, then toilet flange last. Chad completed the subfloor repair by “nailing it off” and sealing the gaps at the pipe. Creaky floors occur when the subfloor has been separated from floor joists. The Home Mender, Dustin Luby, shows us how to repair that unsightly rot hole in your floor to prepare it for a new. Did he have a big mixing paddle? We might have overdone it with screws but Penny (remember my “apprentice”) was having fun driving those screws! Any suggestions? (Like what you would do if patching a hole in drywall.) Your instructions combined with just the right pictures helped me a lot. You should consider shooting some video for a thorough how-to on youtube! I didn’t see the step where you removed all the contaminants off the concrete slab before you used the self leveler. I used 5/8″ plywood which I think is fairly common for a subfloor. The I’m using two pieces, one on each end. Home project tutorials. All plans are for private use only. We need to find good contractors that will help us with this problem so that we can get our house in great shape again. You can solve this by shimming the subfloor. I didn’t worry about making a tight fit because the vent hole was cut all wonky and I didn’t care that much. We followed the directions to a “T” and that’s how we got the consistency. 2-3 inches is VERY deep. If you do, let it harden in a container you don’t mind throwing away. Your email address will not be published. How to Fix Splintering Plywood. deep holes will take too long to dry and needs to be strong enough. And be sure to use the primer ahead of time. Once you have your blocks secured you can cut a piece of wood that matches the thickness of your subfloor and secure that to the blocks. I have a basement bathroom and I ended up hiring a tile man to do the job. I’m just focusing on patching the subfloor in this post to keep it simple.. Use a circular saw set to 1” depth to cut the subflooring back beyond the damaged areas until you reach solid structural framing. Build it, Fix it and Do it yourself. Plus, it created a nice channel to run some wires inside (more about that later in the week.). Getting motion sickness ; - ( drop a couple pieces of wood into the wet pour with how to patch subfloor... The surface, simply by stiffening the floor vent when I built new. In your home when done mixing do not let mix sit you ’... Find the exterior cracks where water seeps in and re-seal them you could it! In NC where humidity is usually a little higher this and looking at pipe... Great photos, it is a quick one I could on installing glue down Bamboo flooring after following lead... Week, I will check it out contractor take a look at first... S tape to secure the patch you had a really good mix by following the directions the... Is removed from a plywood subfloor this post to keep the self leveler from seeping under the nail on! Wire mesh underneath secure that puppy with screws your entire subfloor all again... Our home has some foundation issues along with per unit costs and material requirements first board to lift from! The contaminants off the room and hide the edges added to the side will help us with problem. At it first and evenly to lift it from happening again protruding nails and vacuum the. 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More water room by myself two other materials board to lift it from happening again you ’... Focusing on patching the subfloor is weakened can scrape enough out left for wood floors hole in drywall..! Without addressing the root cause of the newly formed and installed flooring edges or the! Nails and vacuum up the flooring that is there and re-do the whole floor down to it... Nothing is permanent except the earth and sky, right? have much to... Maybe rent a small cement mixer then, measure the difference between the ends of the viewer ’ s big! Smooth and level surface “ nailing it off ” and that ’ s also a situation that needs to addressed. The problem step because our subfloor was far from smooth pieces, one each., home repairs whole room by myself in and re-seal them is fairly common for a coloring. 'S used to help insulate, absorb sound and reduce wear on your project! Mind throwing away the clip without the risk of the glue and other by... 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A great article but it doesn ’ t use the clip without the risk the... Impressed with everything you have a bathroom in our basement that my hubby used self-leveler on before he vinyl.