Anyway a wire mesh needs to be stapled to the floor not paper!!!! This is usually a pretty easy process and I know you can do it. Click here. If the dip needs a little extra thin set, than you can scrape over the dip with the straight edge once more. Tile trowels come in many sizes – click here to see chart. Plywood underlayment is a thin plywood material that is most commonly used under resilient flooring materials, such as vinyl and linoleum sheets and tiles. Appreciate the information. Thank you for sharing these tips. – cabinet installer set cabinets on concrete subfloor and shimmed only to level rather than to raise to potential new floor level. So what I mean is, if you see a dip when looking down the chalk line(and you might need to get your head down to the floor to really get a good look down the chalk line) then move to that area and shrink up the chalk line. This is really going to be the same exact floor leveling strategy that we talked about above. Apply a latex floor primer to the entire plywood surface using a paint roller. This will stop you from taking too much off. Installation steps for Tiling a Tub Surround, Installation Steps for Tiling a Custom Shower, My Facebook Page- this is by far the fastest way to get your question answered. If the floor is uneven, lift up the board until it is level so you’ll know how much flooring compound you’ll need to even it out. Then I measure it with a tape measure. Anyway, no worries when the thin set underneath dries it will have strength and there will not be any noises from crumbling thin set. Don’t worry Kathy, when you screw into the dried thin set the wet thin set that you spread before installing the cement board will stop it from affecting anything! I have a quick question. A 3/4-inch plywood subfloor on a joist structure with 24-inch spacing needs the extra thickness of cementboard or the floor will flex and the tiles will crack. If you find hollows and valleys, you must fill them with a self-leveling underlayment. Remove the existing flooring. Once you have marked out the dip, you will need to find out how deep it is. We have osb subfloor that’s very uneven and were wondering how to address it. O.C. The bonding agent will create a chemical connection with the leveling compound to help it set up more securely and last longer. Required fields are marked *. Your local Home Depot store … BC plywood over the old subfloor, using construction adhesive and driving 1-1/4-in. I have a question on leveling the floor. You can leave linoleum or sheet vinyl in place if it’s difficult to remove or if removal would damage the sub-floor. If it’s a hump, then write that on the floor and the same goes for a dip. In order to level the subfloor to install tile, the builder suggests, 1) to put a paper on plywood and pour self leveler, and skip hardibacker; 2) to pour self leveler on plywood directly and skip hardiback; and 3) grind the hump of the plywood. Unless you add another layer on top to give it it’s strength back. Once these materials get on something, they can be nearly impossible to get off. In some cases, the floor covering is isolated. All tip submissions are carefully reviewed before being published. Learn how your comment data is processed. When you mix the thin set for filling the wholes, do you mix it with the same consistency as you mentioned in your video on laying cement backing? He simply filled low areas. I am starting a project of tiling our bathroom floor for the first time and after doing research and talking with store reps, your videos answered and clarified many questions I had and I feel much more confident about the project. Be sure to clean off your straight edge or level. Otherwise we will catch the rest in a moment. Ou… You can also send me an email at firstname.lastname@example.org but if I could see a picture that would be great! Lay a long level "downhill" on the floor, with one end of the level on the level part of the floor and the other end at the lowest point. I usually only mix about 1/2 of the bag at a time. wikiHow's. Just be sure to follow these simple steps that I will layout for you and all will be good. Then, pull it up. To ensure that the finished floor turns out nice and flat, it’s best to go ahead and cover the entire surface. Measure and cut 5/8- to 3/4-inch plywood with a circular saw to cover the subfloor and build it up to … Try to make even passes. hubbie’s worried that screwing the backer board into the dried thinset will cause the thinset to break up. 3/8″ plywood will span about a 1 inch gap before it exhibits considerable localized weakness… Instead, try to use the shingles and/or … We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Leave a 1/8-inch gap between the ends of the sheets. For the strongest, most durable finish possible, be prepared to let the compound dry overnight. My plan was to level the floor with some sort of self-levelling compound, screw down 3/4" plywood, then Ditra, then tile. Watch our step-by-step video showing how to level a wooden floor, with expert advice and top tips to help you complete the job with confidence. Thanks a lot for your information. Darn sad that I didn’t see your instructions before laying my bathroom tile, which is pathetic in parts. When leveling floors made of wood, you’ll need to sand down any high spots. To learn our Carpentry reviewer’s tricks on using a bonding agent to help the leveling compound last longer, scroll down! This will add additional height to the floor, which can also cause problems with door clearance and other things like that. Use a pry bar to pull up hardwood floors one section at a time, or unfasten carpet or laminate and roll it up from one end. After the floor is leveled as you describe, you then need to screw the back board on top. Determine the Underlying Problem. That is another reason(other than giving strength to the cement board) why you should always thin set your cement board down. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. It will fail if it’s paper. There is hump around the top of the stairs to the 2nd floor, on the plywood. Before we get started with the floor leveling, there are a few tools you will see that I use in this step. % of people told us that this article helped them. This will eliminate the dip and all that should be left is the thin set that is needed to fill the dip. Now we need to fill in the tracks that were left from the trowel. Tape off any affected vents with painter’s tape. Only exterior-approved plywood will support the weight; interior plywood and particleboard do not have the same strength and will buckle under the tiles. before the year 2010, the tile Council of North America (tCNA) described large format tile … Try to avoid relying on the 3/8″ plywood to level the floor. You might need to scrape the dip more than once, but be careful not to pull out too much. If you suspect that you’re working with an off-level foundation, you can get it ready for installation quickly by using a floor leveling compound. Have someone help you with this by holding one end of the chalk line. Tools and supplies that you will need for floor leveling-. Thoroughly cover all areas with one coat of primer to enhance adhesion of the leveling compound to the plywood surface. ANSI A108.02 – 4.0 / 188.8.131.52.1). Do you have facebook? Unless you’re an experienced contractor, it may be best to leave tile removal to the professionals. If you do not have one, it can be rented for a reasonable price. Which could raise the floor … Fill cracks in concrete subfloor and make sure the filled areas are level before cleaning the subfloor. To remove carpet, cut it into smaller pieces using a razor knife. I will then pull my trowel across the floor trying to leave nice even tracks. As long as your subfloor is perfectly level, everything that goes on top of it will be, too. They are tools that you will need to install the tile anyway, so you should be covered. Fasten the sheet to the floor joists with 2 1/2-inch screws driven through the old subflooring and into the joists below. It will not be a problem Andy, because the thin set that you spread under the cement board before screwing it down will secure and crumble areas. Here is a link. Be sure to wear eye protection and a facemask or ventilator while wearing down uneven subflooring. Raise the lower end of the level until the bubble is centered, then measure the … When choosing tiles take into account the color scheme of the interior. It can also be used under hardwood, laminate, … Then, mix leveling compound according to the instructions on the package in a large bucket. For subfloors that are prone to mold and rot, the leveling compound can be applied over a watertight moisture barrier sheet. Then stop and check the hump with your straight edge frequently. There are 14 references cited in this article, which can be found at the bottom of the page. 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