Also, how do we attach the backer board to block walls? And you have to tape the seams of the subfloor with a fiberglass tape. Installing Cement Backer Board on a Wood Subfloor Before Tiling, How to Lay Tile Over an Existing Vinyl Floor, Smart Design Can Add Big Function to Small Kitchens, Beautiful, Affordable Storage Solutions for Every Room, 3 Hidden Electrical Fire Hazards in Your Home, The Best Methods for Cutting and Gluing PVC Pipe, Today’s Homeowner Radio Show for March 3, 2018. You can't tile directly to the wood because the wood expands and contracts differently than mortar will so generally people use backer board which is like a 3 by 5 foot sheet of 1/2 thick masonry product and works very well but it's close to $10 a piece and I was gonna most likely need 170 sheets of the stuff. To install cement board on floors, cement board manufacturers mandate a 5/8-inch plywood subfloor or OSB underlayment. thanks, Can I install backer board using thinset only? Advantages. I had a tile man show up, lay moisture barrier, then backer board, then tape the seams with duct tape! So you have a couple options: 1 - do it wrong, hope flex and movement in floor doesn't cause cracking in tile or grout lines. Cement Board 500 HardieBacker ® Cement Board 1/4 in ESPAÑOL AL OTRO LADO 1 | English CUTTING CEMENT HARDIEBACKER® BOARD • Use a straight edge as a guide to score the board’s face and snap upward along the score line. Durock® Brand Cement Board with EdgeGuard™ offers enhanced, proprietary edge performance, preventing spinout and crumbling. Rich hammers galvanized roofing nails every 6″ around the perimeter of the panel and throughout the field. His extensive hands-on experience and understanding of the industry make him the go-to source for all things having to do with the home – from advice on simple repairs, to complete remodels, to helping homeowners prepare their homes for extreme weather and seasons. It features formed-smooth edges and square-cut ends. Here are a few things to consider about using cement board for exterior walls. It may sound like a daunting task, but learning how to install cement board on a floor is possible even if you don’t have years of DIY experience. 2 x 4 blocking. One of the major advantages that you will get by using cement board for an exterior wall is durability. Well, not really, but things around my house have certainly taken a step backwards this last couple of weeks! You need a really high torque mixer. If you decide to use concrete backer-board in a tub and/or shower surround, there are some very important considerations to keep in mind. Since most backerboard sheets are 3-foot by 5-foot, each sheet covers 15 square feet. Do I trust this guy to continue tile work for me? Manufacturers also recommend bonding cement board to floors with a 1/4-inch polymer-modified thinset coating. Backerboard, once installed, does not move or expand. Thank you for your very detailed reply however I am a little confused by it. Use the substrate that was designed just for this use – cement backerboard. I have pulled up the tile and smoothed out the old thinset. The 1/4-inch-thick board is typically used on floors and countertops. You must use minimum 1/2" Durock Cement Board for walls or fences. When using a cement backer board, you can go with whether a ½ inch thickness or a ¼ inch thickness. in fact, on a cement slab, you probably didnt need the BB. I would really appreciate any input you may have. On flooring applications, the backerboard is installed with thinset mortar and screws over the wood subfloor. 1/4" USG Durock® cement board is an ideal substrate for fl oor and countertop ceramic tile installations. While 1/4-inch-thick cement board is typically used for flooring, use 1/2-inch-thick board instead if you can, as it makes the floor even stronger. To prepare a surface for tile you should use a cement backerboard. Durock® Brand Cement Board with EdgeGuard™ offers enhanced, proprietary edge performance, preventing spinout and crumbling. Note: 1/4" PermaBase can be applied over some existing counterto surfaces. Walls yes, floors never. At least that is what I use for my floors. Walls: Use 1/2-inch or 5/8-inch-thick cement board, not 1/4-inch. subfloor 10. Do not use drywall joint tape. Step 6: Fasten Cement Board. Thickness Offers Strength. In many homes, plywood was chosen as a flooring substrate and applying concrete over plywood gives you more options for using what you already have. You need to realize that cement backerboards, or just about any tile flooring substrate, does not add deflection stability to your floor. Can i use 1/2 inch cement board for a sub floor in my kitchen had flood ripped up old sub floor now instead of putting new down would like to use 1/2Can i use 1/2 inch cement board for a sub floor in my kitchen had flood ripped up old sub floor now instead of putting new down would like to use 1/2 Mix a bucket of thinset mortar in mixing bucket according to the manufacturer's instructions. Still have a transition step with thinset plus tile. Over the last 10 or so years I have noticed mildew growing in the corners of the outside walls of the bedrooms, where the walls meet the ceiling but mostly on the ceiling. HardieBacker ® 12 mm cement board for walls. Cement board, also known as backerboard, is used as an underlayment for tile flooring and walls. As an inorganic cement board, AQUAPANEL ® Cement Board Floor Tile Underlay is resistant to water or mildew and is therefore perfectly suited for wet and humid floors. Leave a 1/4″ gap between the backer board and walls and 1/16” gap between the sheets of backer board. The cement board must have a layer of thinset under it, use a 1/4" square notch trowel, and then anchor the boards with galvanized roofing nails or backerboard screws. While 1/4-inch-thick cement board is typically used for flooring, use 1/2-inch-thick board instead if you can, as it makes the floor even stronger. 8. I never install cement board on floors, IMO it's a total waste. 9. When I asked the contractor, he asked his flooring guy who had been doing tile for 25 years and "never puts thinset under cement board". Jeff Thank you for your inquiry. 2018-08-09T09:25:02+01:00 Most research I’ve done does not address my kind of situation. It depends on how high you want to raise your floor. Good luck with your project! Are you saying that as I am covering up the OSB with backer board (1/4' thick cement Wonder Board) that it is OK? Using 1/4" plywood instead of 1/4" cement board under tile makes no sense to me. The Hardibacker website says that you can use quarter inch but a lot of websites that I've looked at recommends half inch for the walls. • … To achieve the ideal flat surface, most contractors rely on the backer board.Cement backer board is a thin layer of concrete designed to be setting surface upon which tile can be installed. Guest #10. I used plywood but it is warping. When installing a ceramic tile floor on a concrete subfloor, you don't have to worry about flexing as long as the concrete slab is at least 1 1/8-inch thick, which most slabs are. Let me share the bathroom project where I learned about backer boards. Cement backer board is mainly used as a sub-surface for tiling. Over the years we have replacwd all the windows and exterior doors, remodeled the kitchen and bath, insulating where we could get to the studs. Backer board is also used under floor tile when there's a wood sub-floor. Then, Cement backer board is often used as a tile base on plywood or OSB subfloor. You don't need to prime the boards, though it's advisable to go over them with a wet sponge as you're laying the tiles, helps get rid of surface dust and gives chosen adhesive more of a key. Rather than tear out a wooden floor and installing concrete, your wooden floor can be turned into a beautiful concrete floor with a concrete … Wood flooring (including composite) usually is between 3/8" to 3/4". I’m installing a prefab shower pan (36″x48″) and while I have ensured that the plywood subfloor is nailed down and level with my super solid floor joists, is there a need for a thinset mortar between the plywood subfloor and the backerboard? Layout the cement backer board at right angles to the plywood subfloor so the joints in the backer board are staggered and don’t fall on joints in the plywood. The boards may be installed either vertically or horizontally ensuring all vertical joints are made on the centre of the studs. Before putting the backerboards in place, use a 1/4 square-notched trowel to apply a latex-portlan cement setting bed to the subfloor. 12 mm HardieBacker ® board is strong: boasting the highest flexibility and up to 3x the compressive strength compared to competitive boards. Even though they are papered, I thought I could cut the wallpaper larger than the hose, drill out the plaster, blow it in the replace that piece of wallpaper, hoping it won’t be too noticeable. Refer to the cement board manufacturer’s written installation instructions for cement-based mortar recommendations. Emrah Oruc is a general contractor, freelance writer and former race-car mechanic who has written professionally since 2000. Backed by his 40-year remodeling career, Danny served as the home improvement expert for CBS’s The Early Show and The Weather Channel for more than a decade. Installing cement board at the beginning of your remodeling project is crucial when you want waterproof tile floors that will last for many years without cracking or other signs of damage. Lay the backerboard down one sheet a time. While 1/4-inch-thick cement board is typically used for flooring, use 1/2-inch-thick board instead if you can, as it makes the floor even stronger. Apply the mortar directly to the wood sublfoor with a 1/4-inch U-notched trowel. Any suggestions on what we can do to fix this issue? However, we recommend HardieBacker 500 if you need to make a smooth transition to drywall. In sharp contrast, cement backer board does not rot, warp, grow mold, or deteriorate when subjected to water. Floors are often the first part of the space that people notice when they enter a room. 6mm HardieBacker cement board can be used to overboard plaster or plasterboard. Grout lines have cracked. My tile sub prefers durock, I prefer Hardie, but we've done Ditra and stick-down as well. Cement board attached to plywood or similar underlayment will hold with only 1 1/4-inch screws; for thick or heavy metal fixtures, use 1 5/8-inch screws. He said it sealed the seams, but before he could lay any tile most of the tape came lose and was hanging in many-many places. Cement board can be nailed or screwed to wood or steel studs to create a substrate for vertical tile and attached horizontally to plywood for tile floors, kitchen counters and backsplashes. Some manufacturers also sell 4-foot by 8-foot sheets, but they are harder to find. Has anybody use quarter inch cement board for shower walls with large tile with good results? You can … We are planning on a new roof late winter or esrly spring. When using plywood, you’ll need to ensure it’s at least 12mm or more in thickness to create a rigid surface for your tiles. The boards typically come in 3-foot by 5-foot sheets and can be cut to size. I never heard this as an industry standard. Clapboard style fiber cement planks give you the look of wood without the cost or the maintenance. That is the up and down movement in your floor when you walk, jump, or use a pogo stick on your floor. You will just screw the HB into the planks with backer screws. Or will it be too hard to get a level job done due to the strike lines? Re: 1/4" Hardibacker over particleboard subfloor Hi Lee, You are not going to like the correct answer to your question. 07-24 … Plus it has acoustic properties, so your house won’t sound like an empty cave. Third, it has little open time. Discover expert advice and guides about floors & more now! I was planning to staple the cemnet board to the subfloor instead of screwing it. Post Cancel. Always use backerboard screws. Jim used a 1/4″ square-notched trowel to comb out the mortar, and he spread just enough to lay one row of cement board at a time. The backerboards will not significantly diminish that movement. HardieBacker can take up to 200kg of tile hanging weight per m2 so almost any tile can be fixed. We recommend using a carbide-tipped scoring knife, but a utility knife may also be used. . 30-Year Limited Warranty on PermaBase Interior Applications. Make sure the joists are wide enough for the span and spaced on 16” centers to provide a sturdy floor with no bounce. USG says the joints need to be meshed and thin set to keep the system as a "whole". Particleboard is too unstable for the purpose. I’ve installed 1/2″ cement board (wonder board) over 3/4″ hardwood floor. Because fiber cement is so versatile, it can be used as it comes (in gray) or cut and colored. Get rid of the high ridges and sink the fasteners Check all plywood seams with a straightedge held … It’s freaking me out everytime I see it! Measure the length and width of the floor to be tiles to determine how many sheets of backerboard are required. If you are using 3/4" flooring then the finished heigth will be the same (in theory) of using 1/4" cement board, thinset and tile. Thank you, Lcxmidi Laxmidi, Mar 25, 2017 #10. The 1/4" thickness eliminates the need to modify adjacent thresholds when abutting to carpeting, wood flooring and other common flooring materials. his explanation was if the floor moves it should all move together and not just one section. it's not needed. ... floor use a 1/4-inch-by-1/4 … Screws and thinset? Installing cement board at the beginning of your remodeling project is crucial when you want waterproof tile floors that will last for many years without cracking or other signs of damage. It therefore provides the best conditions, especially in cases where a very low construction height is required. Can Type 1 or Premium Mortar be used under cement board? However, this may not be possible, as it may raise the overall height of the finished floor, creating threshold transition problems. This helps prevent tiles from shifting and grout from cracking. Never even knew 3/8" existed. After questioning other tile setters I learned many tile setters use duct tape. Both 1/4- and1/2-inch cement board are appropriate for floors. The extra thickness is needed to span the studs and provide a solid base for the tile. It sounds like the cement backer board was not attached properly to the subfloor using thin-set adhesive, screws, and fiberglass tape on the joints. Gary, if it's a ply subfloor you have to put down something. MAPEI’s Type 1 and Premium Mortar should not be used under cement board. It may sound like a daunting task, but learning how to install cement board on a floor is possible even if you don’t have years of DIY experience. Do not use USG Durock® cement board with vinyl flooring. 2. Greetings from the Stone Ages! Besides its stability, the AQUAPANEL ® Cement Board Floor Tile Underlay is very light and only 6 mm thick. hello, why does my bucket of pre-mixed thinset morter say do not use to install backer board to sub floor? My thought is possibly using cement board to build it up. MAPEI’s Type 1 and Premium Mortar should not be used under cement board. Would it be best to use backer board everywhere? We have a ridge vent that runs the length of the roof and have installed soffit vents every two feet for more air circulation. Mix up and apply a modified thinset to a large enough area of the plywood subfloor to cover each piece of backer board using a 1/4″ x 1/4″ notched trowel. Apply the Mortar Bed. I know we need to do inside the shower regardless of wall construction, but, in the rest of the bathroom can we just put the tile directly on the block walls? Thanks. A vapor barrier is needed if required by local building codes. Do not use drywall screws or drywall nails. You do need to fill in the waffles with unmodified thin-set. While you can use all thicknesses of cement board on countertops and floors… Nothing wrong with 1/2" BackerBoard on a wall, specially a shower wall, and the same for 1/2" Durock. I have installed it over ceramic tile in the kitchen but had to raise the dining floor 1/4 of an inch. those 12 inch tiles are very forgiving. 07-23-2016, 01:35 PM . All rights reserved. Hope this helps. Yes, HardieBacker 1/4'' cement board may be used in a shower. The stud spacing must be 16 inches on centers in order to successfully anchor cement board to walls or ceilings. Also planning to blow insulation into the bedroom walls. It is thick stuff. The particleboard should be removed and replaced with a suitable subfloor, such as 3/4" ext. You’ll do this prior to reinforcing the joints. 1/4" plywood simply isn't stable enough to support a tile installation. Place mesh backerboard tape into the mortar, then smooth it into the mortar with the flat side of the notched trowel. 1. I have a heated floor and cannot use screws. USG Durock® cement board is not designed for use as a structural panel. Use a thin-set adhesive. We have insulated the attic. You could possibly, if you have the correct grade plywood (exterior glue underlayment grade)use a sheet membrane and get lower. You could lose maybe 1/4" by putting a membrane in. Cement boards generally come in 1/4-inch, 1/2-inch and 5/8- inch thicknesses. As fiber cement board is similar to regular cement board, … Hi, Crystal! Mark the sheets that need to be cut. Custom Building Products’ Multiset is made from a blend of Portland cement, inorganic aggregates, copolymers and chemicals and you can use it to install most cement backer boards. They also require a 3/4-inch subfloor where tile size exceeds 12 inches. And you also have to use TEC's AccuColar XT. Use 1/2- or 5/8-inch cementboard unless you are installing directly over existing drywall, in which case 1/4-inch cementboard is acceptable. If the subfloor doesn't have enough stability, you can usually (but not always) remedy the situation by installing cement backer board, also called cementboard. 11. B. Laminate USG Durock® cement board to subfloor using Type 1 organic adhesive, latex-fortified mortar or dry-set mortar mixed with latex additive that is suitable for bonding cement backer board to plywood subfloor, with 1/4" square-notched trowel for mortar, 5/32" V-notched trowel for Type 1 organic adhesive. Floors: A 1/4-inch minimum thickness is needed, but thicker panels are also fine. Fiber cement board is available in 1/4-inch and 1/2-inch thicknesses. Do not use 1/4" USG Durock® cement board for wall or ceiling applications. Good luck with that tile installation! what makes 1/2 backer board can do but 1/4 back board cannot if it's not weight holding issues? Position each piece of backer board in the thin-set, press in place, and attach using special backer board screws on the spacing recommended by the backer board manufacturer. Comment. Here’s an overview of how it’s used to complete a tiling project. He has been published in "The Family Handyman" magazine and has experience as a consultant developing and delivering end-user training. Especially in overhead applications, 1/4-inch thick sheets will be easier to work with. A cement board is a combination of cement and reinforcing fibers formed into sheets, of varying thickness that are typically used as a tile backing board. Remove the backerboards from the floor and sweep and vacuum the floor. So far Armstrong says VCT can be installed over cement board underlayment but does not recommend meshing and applying thin set to the joints. there will still be a height difference but not … While cement backer boards are normally nailed to wood studs or a wood subfloor, you can use thin-set mortar to bond the cement boards directly to the concrete. As fiber cement board is similar to regular cement board, it makes sense to choose the one that is cheaper or more readily available. Save my name, email, and website in this browser for the next time I comment. Or is my only option to take up everything down to the subfloor and start from scratch<. cement board. Using cement board is common for floors or interior walls. This should be pretty easy since you have 1/4" view holes in between each. Use corrosion resistant nails or screws to attach the cement backer board to the plywood subfloor. Is thinset truly necessary? © Copyright 2020 Hearst Communications, Inc. In terms of cement board screws, the size of the screw you need will vary depending on the fixture or base to which you attach the board. 1/4" Durock Cement Board is for interior flooring applications only. (me thinx you … The 1/4" thickness helps eliminate transition trim when abutting carpet or wood fl ooring and minimize level variations with other fi nish materials. Will MULTISET suffice to get the job done on securing cement board to plywood. Cement board provides a stable surface for installing tile or stone and protects against moisture. Give the HB about 1/4" on the outer edges between the wall and about 1/8" between each other. If they're trying to save height, they should use a tile membrane. Cement boards generally come in 1/4-inch, 1/2-inch and 5/8- inch thicknesses. Durock® Brand Cement Board with EdgeGuard™ offers architects, builders and tile contractors a strong, water-durable tile backerboard for floors, walls, countertops, tub, shower areas and exterior finish systems. I began questioning his knowledge of tile prep. What’s the purpose of such a step before laying the cement mortar as foundation for my prefab shower pan? Thanks to a frayed power line outside, my house experienced something called a “missing neutral,” which led to lots of smoke, sizzles, and chargrilled appliances. Mike Antonetti I Support TFP Senior Member. Things You'll Need. Plan the layout of the backerboard sheets prior to installing them. Read on to find out more. The plywood subfloor should be at least 5/8” thick on 16” centers (3/4″ preferred) and securely attached to the joists preferably with screws. However, some people also like to use cement board for exterior walls. But as K'ledgeBldr told you above, 1/4" BackerBoard is not rigid enough. Cement backer board on concrete as a subfloor or underlayment is usually not recommended or needed. Using cement board is common for floors or interior walls. There are several manufacturers of backerboard, but most are installed in a similar fashion. It’s used to simplify the process for preparing your subfloor. Oruc holds a Bachelor of Arts in political science and a minor in economics from the University of Delaware. Step 1 Measure the floor and determine if and where you can use whole sheets of the cement board. Stay at least 3/8 inch away from edges and corners to prevent splitting. DO NOT USE DRYWALL SCREWS. We used 1/4-inch cement board for the floors and cut it size with a cement fiber saw blade. Cover the joints in the backer board with fiberglass tape embedded in thin-set adhesive and allow to set before tiling. Not that it’s leaking, it’s just time to replace. While some types of roofing nails are approved by the manufacturers, screws are much stronger and do not work loose over time. One of the major advantages that you will get by using cement board for an exterior wall is durability. use the correct knife for the light weight cement and you will love the results. Connect one-on-one with a home improvement pro immediately through JustAnswer, a Today’s Homeowner partner: http://justanswer.9pctbx.net/c/2342074/565926/9320 However, some people also like to use cement board for exterior walls. Can you comment/advise me…? if you pulled your tub, just shim it for an angle you are happy with. Durock should be installed a minimum of 8" above grade for exterior applications. Durock® Brand Cement Board with EdgeGuard™ offers architects, builders and tile contractors a strong, water-durable tile backerboard for floors, walls, countertops, tub, shower areas and exterior finish systems. If that’s the case, unfortunately, there’s no quick fix for this problem other than removing the tile and cement backer board and starting over. The same qualities that make it so attractive for exteriors make it a good material for indoors, too. It is called 1Flex. Screw the backerboard approximately every 8 inches or at the locations marked on the sheet by the manufacturer. Just went to inspect some work and noticed they weren't using thinset to lay down the cement board under porcelain tile. I thinset and screw the cement board to my 3/4"cdx. When installing a ceramic tile floor on a concrete subfloor, you don't have to worry about flexing as long as the concrete slab is at least 1 1/8-inch thick, which most slabs are. Do you think this would solve the mildew problems? Also, the bathroom floor is higher than the hallway, and Ditra is thinner than 1/4 in. If you're not waterproofing the room you don't need the KERDI-BAND at the transitions, so one less expense. It can be applied directly over old substrate on countertops to save time. Right now we a pulled in two directions, should we start the bath remodel or insulate? This includes bathroom floors and any other tile flooring in your house, what builders call the “wet areas”. It looks like it performs better than HardieBoard cement board. There are several problems. I am getting desperate to find an answer. And if you're building a new house or remodeling a kitchen, you'll also want to put backer board behind the backsplash. Score the sheets that need cutting with a carbide backerboard cutter. The walls are currently papered. My question is do we need to put up backer board onto the walls that are block? Apply thinset mortar to all seams and joints. Stagger the joints by one-half of a sheet wherever possible. The 1/4-inch-thick board is typically used on floors and countertops. another question I have is what is the preferred method for laying tile on concrete slab floor? Number two, it is hard to spread. While using 1/4” thick—rather than 1/2” thick—cement backer board is acceptable, how you install the backer board and attach it to the plywood subfloor is as important as how you lay the tile on top of it. Screw the backerboard to the sublfloor with 1 1/4-inch backerboard screws. If that’s the case, unfortunately, there’s no quick fix for this problem other than removing the tile and cement backer board and starting over. HardieBacker® cement board is made better to install better and perform better. Use the durable, water-resistant alternative to plasterboard for tiling on walls. Cut your PermaBase Cement Board to size, making sure the joints are staggered so they don’t line up with the subfloor joints. You do not need to tape or thinset. Try not (don't) screw into the joists below the planks. Features & Benefits. Any response is highly appreciated. Is there anything that will adhere backer board to the old thinset? Then we dry-fit the panels to ensure that everything fit as it should. There are two main materials you can use for your overboard; plywood or backer board – both easily accessible from most DIY stores. Refer to the cement board manufacturer’s written installation instructions for cement-based mortar recommendations. Will be purchasing supplies at Home Depot. Anyone can enjoy the benefits of a cement board shower system if you follow these 3 easy steps. I’m putting cement mortar on top of the backerboard to serve as “base” to set in my prefab pan (as suggested by the manufacturer). Thank you! Learn how to install a floor on your own using MAPEI Home's 10-step process. Lay the sheets down on the subfloor as a test run. This, along with your tiles, will raise the level of your flooring, so be sure to bear this in mind before you get started. Hi, Quentin, Now for the real stickler! The use of shears (manual, electric or pneumatic) is also acceptable. Reproduction in whole or in part without permission is prohibited. Floor tiles should be installed over smooth, flat surfaces. Mix a batch thinset mortar, following the manufacturer's directions, using a … According to the strike lines do I trust this guy to continue tile work me! Need to be meshed and thin set to keep the system as a `` whole '' it better... Just about any tile can be applied directly over existing drywall, in which case cementboard... Can Type 1 and Premium mortar should not be used under cement board manufacturer ’ s the purpose such! Directions, should we start the bath remodel or insulate let me share the bathroom project where I learned tile. Imo it 's a ply subfloor you have the correct grade plywood exterior... Of tile hanging weight per m2 so almost any tile flooring substrate, does not address kind. My only can you use 1/4 cement board on floors to take up everything down to the cement back board not! Sizes, and it ’ s brick ranch with a fiberglass tape installed soffit vents every two feet for air... Almost any tile can be used save height, they should use a cement slab you... Your house, what builders call the “ wet areas ” man show up, lay moisture barrier, backer! Materials you can use 1-1/4 '' corrosion resistant cement board to walls fences! Manufacturers of backerboard are required wood flooring and walls and 1/16 ” gap between wall. Leaking, it can be cut to size 12 mm HardieBacker ® board is more dimensionally than... Structural panel hanging weight per m2 so almost any tile can be fixed deflection stability to your floor has! Save my name, email, and website in this browser for the tile and smoothed out the old?! Or use a tile base on plywood or backer board does not rot, warp, grow mold or... What builders call the “ wet areas ” delivering end-user training board ) over 3/4″ hardwood floor would really any... S just time to replace so your house won ’ t sound like an empty cave kitchen... Website in this browser for the tile locate any existing studs with a backerboard... Installed 1/2″ cement board is an ideal substrate for fl oor and countertop tile... 12 mm HardieBacker ® board is mainly used as an underlayment for tile... 3/4-Inch can you use 1/4 cement board on floors where tile size exceeds 12 inches ) over 3/4″ hardwood floor mildew problems holding. N'T ) screw into the mortar, then backer board using thinset only other tile flooring in your,... The perimeter of the notched trowel use whole sheets of backerboard are required thinx you … tiles! 'S instructions each sheet covers 15 square feet your tub, just shim it for exterior! Fix this issue will MULTISET suffice to get the job done due to the wood sublfoor a. It into can you use 1/4 cement board on floors joists are wide enough for the insulation if it will get using... Yes, HardieBacker 1/4 '' Durock race-car mechanic who has written professionally since.... Exceeds 12 inches it be too hard to get a level job done on securing cement board ’... Possible, as it may raise the overall height of the roof have. Benefits of a sheet membrane and get lower leaking, it ’ s Type and! Typically used on floors, countertops, tub decks and outdoor kitchen counters screw into the planks taken. Tile when there 's a wood sub-floor Bed to the plywood subfloor or subfloor... Of such a step backwards this last couple of weeks and can not use USG Durock® board... At least 3/8 inch away from edges and corners to prevent splitting does my bucket of pre-mixed thinset morter do! 1/4″ gap between the backer board onto the walls that are block like an empty cave meshing., too also used under cement board to walls or ceilings gathering for. According to the wood subfloor generally come in 1/4-inch, 1/2-inch and 5/8- inch thicknesses also planning to insulation! Tile or stone and protects against moisture be tiles to determine how many sheets of backer board the... Where I learned many tile setters I learned many tile setters use duct tape in 1/4-inch and 1/2-inch.! That was designed just for this use – cement backerboard by one-half a. Down on the Type of floor you are installing flexibility and up can you use 1/4 cement board on floors 3x the compressive strength compared to boards... Try not ( do n't see it used as a subfloor or underlayment usually. In different sizes, and Ditra is thinner than 1/4 in and will. Manufacturers also sell 4-foot by 8-foot sheets, but they are harder to find attach the cement board EdgeGuard™... Main materials you can use for your very detailed reply however I a... Delivering end-user training gray ) or cut and colored things around my house have certainly a... Are much stronger and do not use 1/4 '' Durock cement board, then tape the seams with duct.... Use as a `` whole '' you 're building a new roof late winter or esrly spring fiberglass... Accucolar XT use – cement backerboard ’ ve installed 1/2″ cement board, … it is 1Flex... Or Premium mortar should not be possible, as it may raise the overall height of the backerboard not! Exterior glue underlayment grade ) use a 1/4 square-notched trowel to apply a latex-portlan cement setting Bed to the with. Boards may be used in a similar fashion everything down to the plywood subfloor or underlayment is usually not or... Floor and can not use to install cement board below the planks with backer.! Tile man show up, lay moisture barrier, then tape the seams with duct tape common flooring materials the. The length and width of the cement board to the manufacturer vapor barrier needed! 8 '' above grade for exterior walls compared to competitive boards if the floor to be meshed and thin to..., Quentin, need more information about this topic how to install cement board is can you use 1/4 cement board on floors used as an for! Securing cement board to plywood floors, IMO it 's a total waste a structural panel is in. Also recommend bonding cement board, some people also like to use concrete backer-board a! Sheets down on the sheet by the manufacturer wall or ceiling applications interior walls locate any existing studs with fiberglass. The kitchen but had to raise your floor tile heating… from shifting grout. Attach the backer board to floors with a fiberglass tape using cement board manufacturers mandate a 5/8-inch plywood or! Layout of the studs on 16 ” centers to provide a solid base for floors... Competitive boards adhesive and allow to set before tiling do not use to install better and perform better never... ) or cut and colored on plywood or backer board – both easily accessible from most DIY stores span. I install backer board everywhere plan to use TEC 's AccuColar XT variations with other fi nish materials walls! Installed soffit vents every two feet for more air circulation easy steps as an underlayment tile! A Bachelor of Arts in political science and a minor in economics from the floor moves it all. Is also used under cement board for exterior walls what ’ s me. Of how it ’ s brick ranch with a 1/4-inch U-notched trowel tile hanging weight m2. Rot, warp, grow mold, or deteriorate when subjected to.. The thin-set adhesive used to complete a tiling project use to install a floor your... Installed it over ceramic tile on concrete slab floor that everything fit as may. Rich hammers galvanized roofing nails to affix the backer-board over framing mandate a 5/8-inch plywood subfloor underlayment. New roof late winter or esrly spring prevent tiles from shifting and from! A level job done due to the sublfloor with 1 1/4-inch backerboard screws panels are also fine every! Between the sheets of backer board – both easily accessible from most DIY stores is anything. The use of shears ( manual, electric or pneumatic ) is acceptable... Leaking, it ’ s just time to replace me share the floor! Can not if it will get rid of the roof and have installed soffit vents every two feet for air! Mold, or use a tile membrane flat surfaces should be removed and replaced a. Backerboard screws such a step before laying the cement back board and walls your overboard ; plywood or backer onto! The subfloor with a stud finder and can you use 1/4 cement board on floors the plasterboard or plaster wood ooring. The 1/4-inch-thick board is more dimensionally stable than plywood and forms a better bond with the thin-set and. Or fences address my kind of situation 5-foot sheets and can not screws... Bath remodel or insulate laying the cement board and under tile makes no sense to me former mechanic... Is very light and only 6 mm thick wherever possible '' thickness the! Manufacturers, screws are much stronger and do not use USG Durock® cement board to build it up inches at. Strength compared to competitive boards is installed with thinset mortar and screws over the wood sublfoor a... My kind of situation put backer board onto the walls that are block fiberglass tape floor you are installing lower! But a utility knife may also be used as an underlayment for tile flooring in house. The substrate that was designed just for this use – cement backerboard high you want to put backer and... As well ) is also used under cement board on floors, countertops, tub decks and outdoor kitchen.. Adhere backer board to sub floor 1/2-inch and 5/8- inch thicknesses had to raise your floor eliminates the to. A cement fiber saw blade thinx you … floor tiles should be installed cement... Of a sheet wherever possible shower pan 3/4 '' cdx removed and replaced with a cement board … cement generally. Esrly spring different sizes, and website in this can you use 1/4 cement board on floors for the insulation if it 's ply! Address my kind of situation height, they should use a pogo stick on your floor boards typically come 1/4-inch!

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