thinset for hardibacker seams

1/4 Before you get started, you should determine if your floor is suited to HardieBacker Cement Board. The tape was exactly what I needed for the tiled wall repair. Fasten HardieBacker cement board with specified nails or screws (as listed in “Materials Required") every 8 in over the … You should use alkali-resistant CBU tape because the alkali in the thiset can degrade regular fiberglass drywall tape. I've never used it in any bath/kitchen remodel I've done and have never had a call back in years. Only make enough thinset that you can use within 20-30 minutes. It's unfortunate that this attitude is so prevalent, and not just among DIYers, either. The thinset is not meant to ‘stick down’, adhere, or otherwise attach your backerboard to your subfloor. (Thin-set mortar ingredients are cement, fine sand and a water retaining agent. Types Of Mosaic Tiles […] OK...so what do I use...Flexbond, Masterblend, Versabond, etc???? Should we tape and mud between the two and cover with redguard? Once you put the tape down on the joint, cover it with more thinset. So I'll mesh and thinset the backer board at all … To test if the thinset is still viable to use, test it with your finger. I … Can redguard be used on Hardie board? Which side do I lay the the against? HardieBacker is particularly thirsty...liberally wipe it down with a wet sponge prior to adding thinset, or it will suck all of the moisture … Seam on 2nd layer centered on middle of first layer. I’m going to use mesh and mastic for the corner seam and two seams inside the shower but I was wondering what others use for the transition from cement board to drywall that … In my limited tiling experience, I followed the instructions exactly. If there is another company that wants you to install that product differently then you’ll have to check with the radiant floor company as to why, how they do want … Instead it’s part of a system with the fasteners. All the manufacturers installation instructios say is to: Apply a supporting bed of mortar or modified thinset to subfloor using a 1/4" square-notched trowel. Mix up enough mortar to fill in all seams and joints and cover the nail holes in the backer board. If the thinset sticks to your finger, it should still stick to the surface being tiled. That’s why it was named the most preferred brand of backer board by tile installers and contractors, according to the 2019 Tile and Stone Report conducted by ClearSeas research in partnership with the National Tile Contractors Association … Whether you’re laying down a new tile floor or installing a shower, you may use a sheathing material such as backerboard. If you are going to tile over the cement board, you should tape the seams. The idea is the hardibacker and the tile are one layer, together. Backer board:For backer board on floors, specifically cement board and fiber cement boards (think Hardibacker), it’s my understanding that it doesn’t matter which thinset you use. The plan is to tile above the shower head, but not all the way to the ceiling (the upper most foot of hardiebacker and the ceiling we will paint). And what color? The thin-set is a cement-based powder that you mix with water or latex additive to form a thick paste, which is used to seal the seams in the board and can also be used to set the tile. It was installed with hardibacker over the subfloor and thinset. It'll keep the cement board from moving up and down. Use backer board screws for the best installation. There was no thinset beneath the hardi and the seams between the sheets were not taped and thinsetted. How could one not realize that the thinset helps prevent the Hardibacker from flexing downward and the screws help prevent it from flexing upward? I am thinking, with a new installation, you have thinset and cement board with tons of screws, and then more thinset and tiles. I heard a reply that modified thinset should not be used because if you tear the floor out, it will be hard to get the backerboard up. Hardibacker wants their product thinset and attached if it’s going to have tile installed over it. What cars have the most expensive catalytic converters? Also, one tile guy told me the only seams requiring taping are the corners. Subsequently, question is, does backer board need to be taped? If there is an area where Hardibacker will show it's weakness it's in the seams, but as long as you take the time to tape them and thinset them there is little to be … I did not put a vapor barrier behind the backer board because I have been planning on using Redgard waterproofing membrane on the entire surface area of the HardieBacker. Residing: wood or hardie board? If you are going to tile over the cement board, you should tape the seams. Make sure to tape seams and corners according the manufacturer recommendations. NEVER under or over cement board on a floor. To test if the thinset is still viable to use, test it with your finger. I know not to use mastic on a floor, but (in order to avoid the mess and work of thinset), I was thinking of use the premixed (fake) thinset under the hardibacker. One may also ask, how much thinset do you put under Hardibacker? Which side of Hardibacker board goes down? Continue filling the joints until all the seams contain mortar and the top of the seams are smooth. It'll keep the cement board from moving up and down. But you seem to be saying that actually they move somewhat independently. By continuing to browse this site or use this app, I agree the Houzz group may use cookies and similar technologies to improve its products and services, serve me relevant content and to personalise my experience. Use thinset under the cement board and in the seams with tape. The thinset doesn’t need to bond to the plywood. At least that part is correct, but that was about it. Mapei mortar is a type of polymer modified thinset used to install tile both on the floor and on a vertical … The ONLY time tar paper should be used under tile is either as a vapor barrier BEHIND the cement board for wall installation around a tub or shower, or as what's called a "cleavage membrane underneath a thickbed mud installation. The best way to know if you need to use ummodified thinset or thinset mortar is to determine the tile you are installing and ask a professional or store associate. How could one not realize that the thinset helps prevent the Hardibacker from flexing downward and the screws help prevent it from flexing upward? Sheets of HardiBacker cement tile-backer are cut to fit, then fastened with thinset mortar and special screws. What do we do at the transition between the cement board and the tub? Complete the installation of all hardi board sections to cover the entire shower walls and floor if necessary. The Hardie board is set into this mortar while it is still wet and nailed into the sub flooring. Similarly, should you tape Hardibacker? What should the thin-set … HardieBacker® cement board is made better to install better and perform better. If you just want to leave the corners untreated that will probably be fine, because that seam won't split the center of a tile. Let the mortar dry completely before installing tile. Jump to Latest Follow 1 - 4 of 4 Posts. I'm in the process of laying Hardibacker cement board over 3/4" plywood in my kitchen. Asked By: Yuxiang Indakoetxea | Last Updated: 8th February, 2020, Contrary to popular thought, tile and grout are not waterproof, and some moisture will penetrate even if, Passing ANSI 118.10 for waterproofness, HardieBacker® 500. Use extra fasteners on seams that are separating. Has anyone used mortar between wood subfloor and the Hardiboard? If I use modified, is that technically a better beefy cement board installation? cement backer board fine You need near 100% contact between the hardibacker and the underlying plywood, or the hardibacker will flex and cause your tiles to pop or crack. This will prevent hardening in the bucket. This cement-based backer board, made of 90% Portland cement and sand, resists damage from moisture, provides excellent tile adhesion, and is formulated with MoldBlock Technology to protect … Can you use joint compound on Hardibacker? Where does the filter go on a Goodman furnace? Mastic can also be used with a 5/32 in V-notched trowel. The surface of the Hardibacker looks too “coarse” for a smooth application of paint. The thinset and mesh tape are to strengthen the seams. • Apply a supporting bed of dry-set mortar or modified thinset to plywood with a 1/4 in square-notched trowel. Also, one tile guy told me the only seams requiring taping are the corners. And best honed carrera mosaic marble tile on that..then seal with best stuff.Even this job is INFERIOR to a tile set of 60-100 years ago.In a minor country like Lebenon everything..cielings..floors and all are poured CONCRETE.Don't say America is the "Best Country on Earth"..PROVE IT. I actually had a GC say this to me about two years ago. Although most backerboards currently available won’t fall apart when exposed to moisture and are somewhat water-resistant, they aren’t waterproof. One of the most common installation concerns with backer board is cracking of the tile along the seams of the sheets. The reason I asked about the type of thinset, I used modified, I have not yet laid the tile. If you just want to leave the corners untreated that will probably be fine, because that seam won't split the center of a tile. There is a rough side and a smooth side. The thinset and mesh tape are to strengthen the seams. Based on my understanding, I can use paper tape and joint compound to do Seam 1, and I can use alkali-resistant fibatape and thinset mortar to do Seam 4. I cut out a section of sheet rock and replaced it with wonder board, taped the seams, thin set the joints, and retiled the replacement section. As mentioned before, the thinset fills the small gaps between plywood and cement board. There was no thinset beneath the hardi and the seams between the sheets were not taped and thinsetted. B. bob bob ... Is it ok to use mesh tape and thinset to bond the corners after the board is primed? Cut all hardi boards to size with a reciprocating saw and fill in any gaps necessary. Need to re-install tiles after putting new section of backer board. 2 Answers. The thinset is not meant to ‘stick down’, adhere, or otherwise attach your backerboard to your subfloor. By taping the hardi you help make this layer one. That means you Personally, I'll listen to TCNA before I listen to a thing a manufacturer has to say, because TCNA has nothing but the welfare of the industry at heart when they do their r&d. Fiberglass mesh for added strength. I believe Durock is less expensive than Hardibacker, and works just as well. The manufacturer says to use mortar or modified thinset with 1/4" trowel. All of the seams and corners get alkali resistant mesh tape embedded in thinset,,, no caulk. Use a trowel to apply a very thin layer of thinset to the top of the piece of fiberglass tape. Plan the installation so the last column of tiles overlaps the joint between the cement board and the greenboard if possible. I guess the assumption is that once adhered, the Hardibacker and tile are essentially one unit. HardieBacker® cement board is made better to install better and perform better. Thinset or mortar (or thinset mortar, thinset cement, dryset mortar, or drybond mortar) is an adhesive made of cement, fine sand, and a water retaining agent such as an alkyl derivative of cellulose. I’m currently building a tile shower. If you are going to tile over the cement board, you should tape the seams. Mix the thin-set mortar according the instructions on the bag. The first coat of RedGuard is applied. Jump to Latest Follow 1 - 4 of 4 Posts. If the thinset sticks to your finger, it should still stick to the surface being tiled. The fiberglass tape reinforces and strengthens the joint. To a lesser extent the correct screws were not used in the hardi – they committed the cardinal sin of using … That should be a big enough deal to make taping worth the effort. I heard a reply that modified thinset should not be used because if you tear the floor out, it will be hard to get the backerboard up. Fasten HardieBacker cement board with specified nails or screws (as listed in “Materials Required") every 8 in over the … What is Hardibacker used for? The thinset and mesh tape are to strengthen the seams. Is it recommended to put tar paper under a cement board installation???? That’s why it was named the most preferred brand of backer board by tile installers and contractors, according to the 2019 Tile and Stone Report conducted by ClearSeas research in partnership with the National Tile Contractors Association and TILE Magazine. The backer board comes in different sizes and you will pick the right one depending on the type of … Drying times vary based on the type of mortar you will use for the tile. The space is … IF YOU CARE ABOUT YOUR COUNTRY CARE ABOUT ITS STRUCTURES...people give they're lives for the sake of this country...it's a disgrace to not spend a few miserable bucks for the sake of it. And then you have thinset all over the plywood versus the tar paper and mesh that keeps the plywood nice and clean? As for the … Can be used for seaming most types of cement backer board and tile underlayment. Step 4. It's just IMPOSSIBLE to make a tile floor last more than a couple of years! We installed .5” HardiBacker around the tub, posted off the top of the tub flange 1/8”. Sealing Backerboard Seams . An unmodified thinset (Masterblend) is fine between the Hardi and the subfloor. Do I need to waterproof shower walls before tiling? Normally, dry times range from 12 to 24 hours. Using thinset mortar and special tape to seal the seams between the sheets is also necessary. How do you transition from cement board to drywall? Make sure to tape seams and corners according the manufacturer recommendations. 1 - What are your thoughts on applying thinset to adhere stacked stone to wall...Apply directly to painted sheetrock? This ensures the floor is one unit and will move as one. Thin-set dries slowly, allowing you to fix and readjust backerboard sheets as needed. I'm figuring that the slow dry time and water-sensitivity won't matter here, especially because it will be a week between the time I lay the backer and the time I start to tile. But you seem to be saying that actually they move somewhat independently. Hardie backerboard will not seal out moisture completely, nor will thinset or grout. I have not placed thinset on the seams yet. They're sort of the Consumer's Reports of the tile trade. What about Versabond...is that kind of between unmodified and modified? • Use the fastener pattern as a guide. Hardibacker does not shread like cement board under pressure or jolts, but it adheres to thinset just as well. Apply it just like masking tape and it will stick to the drywall until you apply thinset for the tile installation. Thinset mortar is commonly used for setting ceramic tile. Using 1/2″ Hardibacker for the shower transitioning into 1/2″ greenboard outside the shower. Mix powdered latex-reinforced cement mortar with water as directed on the package in a clean plastic bucket. Before the HardieBacker can be attached to the floor with screws you’ll need to add a supporting bed of modified thin-set. I have the HardiBacker board up and the seams are taped and mudded with alkali resistant mesh tape and thin-set. Fiberglass mesh for added strength. The existing floor consists of a base hardwood, and asbestos flooring on top (I believe there is a thin layer of plywood between the asbestos and the hardwood but not positive). Answered. And then people wonder why their floors don't last. For tile backer board such as Durock, Wonderboard, Hardiebacker, Permabase, and others the seams between the board need to be treated with 2-inch alkali resistant mesh tape. Make sure that the entire seam is covered with thinset and tape, and that the … 2 Answers. This QEP Backerboard Seam Tape Roll is self adhering to reduce application time. I double the 30 felt up staggering all seams. Does Hermione die in Harry Potter and the cursed child? This will prevent hardening in the bucket. Finally, you'll need an 8 x 12-ft. piece of 4-mil plastic sheeting and some straight 2x4s. Taping hardibacker seams after priming with Redgard. Is this true. The seams between the Durock get a special mesh tape designed for cement board/Durock...NOT the mesh tape in the drywall section of the big orange box. Tara, The reason for the layer of thinset between the cement board and the subfloor is to fill the voids/gaps between the two. I just tiled my third room today...I didn't put thinset between the subfloor and mortar...I spoke to many people on this....from my experience...40% don't even put hardibacker down, of those who do less than 50% use thinset between it and subfloor and almost no one taped and mortared the seams (1/8th inch thick)...granted I have only spoken with about 30 folks (5 being professional installers) on tiling but interesting results...I also didn't use the recommended number of screws...most don't use Hardibacker screws, just roofing screws which were cheaper and do just as well. … (I haven't used any full strength RedGard yet). the backer has been down about four weeks and it was put down with roofing nails along with thinset. Cover an area large enough to place the first backer board sheet. Doing a tub tile repair. Designed with time savings in mind, James Hardie’s new HardieBacker cement board with “HydroDefense” aims to help professionals and homeowners alike cut down on the time it takes to waterproof a surface, such as shower walls. Click to see full answer Moreover, what tape do you use for Hardibacker? If not, throw it out and start a new batch. For example, a 10-by-12-foot room is 120 square feet; divided by 95, the result is … I always use 1/4" trowel for all my … Keep in mind, that tiling board seams are not like dealing with drywall...it doesn't need to look pretty and the tape doesn't need to be embedded fully, it will be when you add the thinset and tile. If you want to use a backer board with a built in moisture barrier than you should use DensShield by Georgia-Pacific. Joint compound or thinset?? Learn more. If I use modified, is that technically a better beefy cement board installation? Resources. Divide the square footage of your project by 95 (the maximum coverage of a 50-pound bag of thinset. To assure less trouble upon future removal I have specified best 3/4 " plywood screwed down with lifetime coated screws..with a 5/8" plywood over that..THEN thinset/hardie board. – user36043 Apr 27 '15 at 15:17 @treeNinja I'm pretty sure you can do without that second layer of plywood. Provide support behind seams that run parallel to wall framing. If not, throw it out and start a new batch. Lastly, a different type of thinset adhesive is called mapei mortar. Does anything go? Copyright 2020 FindAnyAnswer All rights reserved. Leave as is? Two, where gypsum wallboard meets Hardibacker, how does one address the resulting joint? In most cases, you can apply tile directly to the concrete. This should not be that difficult. Once laid into the thinset bed the floor becomes a solid, fully supported substrate for your tile – that’s what you want. What about Versabond...is that kind of between unmodified and modified? Moreover, do you have to tape seams on Hardibacker? All Hardi seams are tapped with thinset. Why use a modified thinset, when the LAST thing you want to do is bond one layer to the other? It is also used to set porcelain tile and natural stone tile. As mentioned before, the thinset fills the small gaps between plywood and cement board. Taping hardibacker seams after priming with Redgard. What are the cultural beliefs of Pangasinan? That long term flexing can lead to problems down the road. It's used to bond ceramic or porcelain tile and cement backerboard.) The amount of thinset you need is calculated by the square footage of the floor or wall, the size of the tile, and the size of notched trowel you use to spread it. Cement backer board on concrete as a subfloor or underlayment is usually not recommended or needed. Mastic can also be used with a 5/32 in V-notched trowel. If you just want to leave the corners untreated that will probably be fine, because that seam won't split the center of a tile. 2 in. One solution is to nail cement backer board CBUs over the drywall, tape the seams, and then grout over the cement backer board. This might be a strange question...but how do you gut a new installed bathroom floor? At least that part is correct, but that was about it. Alkali tape applied to all Hardieboard seams. Sometimes it allows an unimpeded way for water to get behind the board and into the wall. Can you use 1/4 Hardibacker shower walls? Sometimes tiles will pop loose where there's movement. Pack in thinset, lay on the tape, and flat-knife to get … Similarly, should you tape Hardibacker? When I mentioned this as a problem, that was his reply. This is probably because at one time the installation instructions for Hardibacker called for 3/32" inch of thinset underneath. Installing hardibacker on floor. How do you palpate fundus after delivery? The old mud jobs with the wire mesh and tar paper actually tear out with relative ease once you get underneath and get sections to break off. width leaves a smooth surface for spreading mortar, thinset or mastic You are not a structural engineer, and often you are not aware if the framing system and wood panels on which the backer board … Regarding this, can you use either side of Hardibacker? HOA Dilemma - What Color Hardie Board Should We Pick? It depends on who you talk to as to whether or not it should be used. Applying RedGard will block out moisture and yes, you would then need to use a polymer modified thinset. It is simply put in place to eliminate voids beneath your backerboard. Spread thinset over a seam between backer board sheets with the short, flat edge of the trowel. That long term flexing can lead to … Best Thinset For Hardibacker. It's a big debate in the industry. If you thinset the tape (like you would during a normal sheetrock install) then apply more thinset and rake out you'll avoid the humps and bumps. It was all … Is this true. Shame, shame, for building disposable housing. By using the trowel, you should be able to get a very smooth and level. Once all the backerboard is installed, all joints should be filled with thinset mortar. Answer + 3. The Floor Elf: Installing Cement Backerboard for Tile in a Shower ; It was installed with hardibacker over the subfloor and thinset. I recommend using 100% silicone for this. Only make enough thinset that you can use within 20-30 minutes. The tile will receive caulk at changes of plane. B. bob bob ... Is it ok to use mesh tape and thinset to bond the corners after the board is primed? Lastly, would I save myself headaches by applying Hardiebacker for the entire job. All seams have been taped and filled with thinset mortar. 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. Can you install cement board over drywall? Jeff, thanks for responding. I guess the assumption is that once adhered, the Hardibacker and tile are essentially one unit. (I haven't used any full strength RedGard yet). I am at the taping/mudding stage. How to Mix Thinset-It’s Like Making Pancakes! Currently, Hardibacker calls for either 1/4" thinset, or 5/32" mastic underneath. Make sure the dimpled side of the HardieBacker is facing up toward you and the smooth side is … This QEP Backerboard Seam Tape Roll is self adhering to reduce application time. Once laid into the thinset bed the floor becomes a solid, fully supported substrate for your tile – that’s what you want. Thinset or mortar (or thinset mortar, thinset cement, dryset mortar, or drybond mortar) is an adhesive made of cement, fine sand, and a water retaining agent such as an alkyl derivative of cellulose. Jeff, thanks for responding. You need near 100% contact between the hardibacker and the underlying plywood, or the hardibacker will flex and cause your tiles to pop or crack. Can I use drywall mesh tape for cement board? Of course my contractors did not apply thinset b/t the hardibacker and existing floor. Use thin-set mortar when installing cement backerboard. Many thin-sets have latex and polymer additives in them designed to increase bonding strength. Why tape a Hardibacker seam? The reason for the layer of thinset between the cement board and the subfloor is to fill the voids/gaps between the two. Has anyone used Krion stone or Blu stone tubs. The first waterproof cement backer board on the market, HardieBacker with HydroDefense … Can you change your mind after signing a tenancy agreement? Actually, it's a midrange modified thinset, about equivalent to Mapei's Ultraflex II, Laticrete's 253, or Hydroment's Single Flex. Use either acrylic or latex modified thinset mortar or mastic compound as mortar for a shower wall installation. Also, it makes sense. Which side of the Hardibacker backer board do I lay the tile? • Apply a supporting bed of dry-set mortar or modified thinset to plywood with a 1/4 in square-notched trowel. references USG Corporation: Durock Cement Board Next Gen National Gypsum: Permabase Cement Board Glenda Taylor Glenda Taylor is a contractor and a full-time writer …

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