kerdi membrane over cement board

This will include installing its components, such as drain plate and drain collar, as well as Kerdi Band for further protection of seams and corners. How can I find out which sectors are used by files on NTFS? Cement board is a mineral-based board, usually 30 inches by 60 inches, that is used as a lower, dimensionally stable surface for installing ceramic tile, porcelain tile, or stonework. Plus, if you use the mold and moisture resistant drywall, it will be extra insurance against mold. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? A square foot of half-inch thick cement board weighs roughly 40 ounces, while the equivalent area of a Wedi board weighs about 75% less. The shower tray eliminates the need for a mortar bed. Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. Then you can apply a thin layer of KERDI-FIX to the board, the membrane over top . Hardie board is a cement-based siding product that is water-resistant, but not waterproof. The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. The Pros and Cons of Various Tile Backers | Family Handyman Keep in mind, that, just to be safe, most professionals choose to install a waterproofing membrane on top of the cement board when installing in wet locations like tub surrounds or showers. Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? Shower Install - Cement Board or Schluter? - RedFlagDeals.com They are square. It is a fast process that is hard to mess up if you do it right. Additionally, all thin-set mortars should be suitable for use in wet or feature depths of up to 1/8 inch. Applying a conventional cement backer board to such a structure is almost impossible. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. We store towels, medicine, toiletry supplies, first-aid gear, massage devices, facial steamers, spare Painting your garage is a great way to improve the look of the space and make the walls easier to clean. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. The drywall's back side fails, and it's just as bad or worse than it was on the tile side. Cut the shower tray to size. Kerdi board, on the other hand, is an extruded polystyrene foam panel. On the downside, the cement boards are heavy, somewhat difficult to cut and can leave abrasive sandy crumbs that can damage tubs and shower bases if youre not careful. if you go with vapour barrier, then cement board. 120 sq feet including the floor. Kerdi Board panels have a number of other advantages: they can be cut to size using an ordinary utility knife, can be glued or screwed into place, and are very lightweight. Yes, KERDI membrane will stick to cement board. Waterproof showers are the trend today, so RedGard is an excellent alternative to cement boards that act as vapor barriers. It is a topical waterproofing layer that is put over the substrate to keep water from getting to the wood frame and nails. Best Cement Boards for the Shower - The Spruce Thanks Paul! This will help to extend its lifespan and make sure it looks its best for years to come. Step 3: Apply Thinset. ".1) is is okay to use kerdi board instead of ditra on the floor? 173 upvotes. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. Do the prefab Schluter niches like the double unit 12 by 28shelf have a built in pitch to the bottom and middle shelves to drainoff water as shown in niche that you built in that thread? We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. When applying thin-set mortar, the manufacturers instructions should be followed closely. Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar must be used to construct all KERDI seams to ensure watertightperformance of the system. Schluter Ditra VS Cement Board (Which is better?) It also helped me to work in smaller sheets. Why are physically impossible and logically impossible concepts considered separate in terms of probability? We are no longer supporting IE (Internet Explorer), Do not Sell or Share My Personal Information. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. I also used the Kerdi drain. Once the membrane is in place, it can be sealed and reinforced with Kerdi-Fix sealant, Kerdi band, and Kerdi-Drain for added waterproofing strength. Schulter Ditra is manufactured by Schluter Systems and is a 1/8 thick polyethylene uncoupling membrane that is specifically designed for tile installations. Additionally, the drywall should be primed with a latex primer before applying the Kerdi membrane. Depending on factors such as room temperature, humidity, and ventilation in the area, this could take anywhere from 1 to 3 days. The taping knife at a low angle makes an enormous difference, and I'm very grateful for that hint. As fiber cement board is similar to regular cement board, it makes sense to choose the one that is cheaper or more readily available. Find the website that's made specifically for you. The curb doesn't have to be any wider than a 2x4. Kerdi membrane is a waterproofing material that is designed to be used in wet areas such as bathrooms and showers before tiles are installed. I would fear leaks in all corners of this shower. Schluter Kerdi-Shower-T/-TS/-TT 48 in. It looks like Kerdi membrane is ~$2/sqft ($200 for a 108sqft roll) and kerdi board is $3.7/sqft ($115 for a 4x8 sheet (Lowes)). Once you have determined the type of thinset, its important to also consider the weather conditions during installation. Whether youre installing tile on a floor, wall, or countertop, choosing the right type of substrate, or underlayment, is critical to preventing breaks and cracks in both the tile and the grout. I appreciate your help and your quick response. Slap it up comb it out, leave every ridge tall and perfect. The 1/4-inch-thick board is typically used on floors and countertops. It costs more but it;s worth it for the ease of install IMO. A 1/2-inch thick, 3 x 5 foot sheet weighs just 7-1/2 pounds, compared with 45 pounds for a similar size sheet of cement board. I set the Kerdi with my hands, pat it into the thinset with my hands, then go over it with a 4" taping knife held at a low angle to embed the Kerdi in the thinset. This is a bit difficult to answer as it depends on the particular application for the floor system. It could take longer if the space is particularly wet or humid. Welcome to the site. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I guess that why it was so frustrating that cement board is just sooo thirsty. Kerdi membrane can be used on cement board, drywall, and, as you may have guessed- greenboard. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! Water-resistant gypsum board, or green board, was used in the past as a tile backer but is no longer recommended, mainly because better products are available. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . If I go the kerdi membrane route, do I still need to tape the joints before installing the kerdi membrane . Yes, it is recommended to waterproof cement board, especially if it is going to be used in exterior settings or in places where it will be in contact with water. Is this overkill? That means that you do not have to rely on a surface membrane or worry about the board failing if the core is exposed to water. When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. Thanks for contributing an answer to Home Improvement Stack Exchange! What I would be most scared off is the fact that no inside or outside corners appear to have been used. What is the proper substrate to use on tiled wall? Additionally, all thin-set should be allowed to cure for 24 hours before tiles are installed. I will say that to is easier to put the membrane over drywall than cement board. But that doesn't address your question, so it's just a comment, not an answer as such. I trust it and have never had a callback. Recovering from a blunder I made while emailing a professor, Minimising the environmental effects of my dyson brain. Once all that is completed and the Aquadefense has dried, you can install your tile with a polymer modified mortar meeting the ANSI requirements of A118.4 or A118.11. This is necessary to ensure that the membrane will adhere properly to the drywall. Make sure the floor is level in the shower. see Prop 65 WARNINGS. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. rev2023.3.3.43278. (3ft-3in wide). Being a Los Angeles resident, Jessica spends a lot of her time looking for her next DIY project and sharing her love for home design. To line niche shelves, for instance. To create a watertight shower assembly, we installed Schluter's Kerdi membrane over the drywall, just as we would for tile.Write by:. To install Kerdi Membrane, start by applying Schulter ALL-SET mortar (or similar) to your cement board substrate using a 1/4" x 3/16" V-Notch Trowel. You absolutely need to include some sort of substrate (cement board, green board, regular drywall) with the Schluter-Kerdi waterproofing kit. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. And for a more secure fit, you can also use screws. If you preorder a special airline meal (e.g. To prevent those movements from transferring to the tile floor, consider installing an uncoupling membrane between the concrete and tile surfaces. Important to overlap seams in a shingle method. Modified thinset adhesive is a premixed product that contains latex or acrylic components which make it quite a bit more flexible than regular thinset adhesive and therefore better suited to some applications. So long as the seams and joint areas are properly prepared, the panels can also provide waterproofing. Gettin' a little delirious. Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. Will be doing a bathroom gut and will be laying durock cement board over plywood sub floor. . We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. It may take more than 1 beer:). Step 8: Allow to dry. When having to put it up on the wall or measure it for size, you will find that you can get the exact measurements you need without much trouble. This is confusing since Kerdi Board has no Kerdi on it. Kerdi Membrane is a product of Schluter systems. Their lighter weight makes moving panels around during installation a cinch, which is a far cry from the heft of conventional cement board. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. Will add it in. We tried adding water to the thinset, we tried using a larger notch trowel, but nothing seems to make the Kerdi stick. If he did the framing for the shower, then in order to measure for it correctly, he would need to know how thick the tile is so that he can avoid exactly this problem. Tile Shower SurroundCement Backerboard Location? Kerdi Membrane Over Greenboard (Is It Recommended?) You just need a hammer and wonderbar for the walls. For the floor I make a dry mix mud base and then the Kerdi membrane. Required fields are marked *. We apply the thinset the recommended trowel, can't remember what size off the top of my head, in small sections and by the time my husband hands my the piece of membrane the thinset is not skinned over but certainly dry. It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. We tried soaking the cement board and applying the kerdi in small sections. Redgard is a similar product. I hope you made the guy flood test his work prior to tiling the shower floor. I always install it over cement board or backerboard, never over drywall, even blueboard or the mold resistant greenboard. About an argument in Famine, Affluence and Morality, Acidity of alcohols and basicity of amines. Can I install Kerdi board just on the walls of my shower and use a PVC membrane on the floor? You don't want to block off the end of the air chanel and trap half a sheet worth of air under there.-Not paying attention to the direction of my knife. Once you have selected the right sealer, follow the manufacturers instructions and apply a generous, even coat over the entire surface of the Hardie board. When installing Schluter Kerdi Membrane over cement backerboard: Should I use Alkali Resistant Mesh Tape and thinset on the seams of the backer board (for long term durability to prevent each board moving independently thus preventing cracking) prior to installing the Kerdi membrane. I think I'll try using the thinned mixture of Redgard and then try the Kerdi membrane again. By the time you switch from the RG application to the Kerdi installation, it should be dry. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. Kerdi Membrane not sticking to cement board - John Bridge Kerdi Questions and Answers - Kennedy Kitchens & Baths Why does drywall work in a Kerdi Shower? - Terry Love Plumbing Advice Maybe try another brand of thinset? However, you do still have to take care to waterproof the seams and the fastener penetrations to create a waterproof assembly. I can take a bit of it off the wall and roll it into a ball. Should I redo this wall to avoid a mold sandwich? With that said, the key benefits of Kerdi Board include: While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Tile Backer Board Breakdown - DIYTileGuy link to What Kind Of Paint For Garage Walls? This allows for future compression and an area at the corner where things are more forgiving. Builder saying he doesn't want to put my trim tile in here. When it comes to using thinset with Schluter products, the Schluter-Systems website recommends using unmodified thin-set mortars specifically designed for use with Schluter membranes. Bathroom closets are often catch-alls for anything and everything remotely related to self-care. When screwed to the framing, thin strips of cement board fracture more easily than thin strips of fiber-cement. First, you would waterproof with your favorite liquid waterproofing membrane of . Can you put Kerdi membrane over plywood? - KnowledgeBurrow.com With that said, lets take a look at the importance of choosing the right tile substrate, the options you have, and which tile underlayment material you should choose Kerdi Board or cement board? Without an underlayment, even the slightest movement of the subfloor can result in cracking of the tile and crumbling of the grout lines. Yes. A place where magic is studied and practiced? By: Author Olin Wade (Remodel or Move Stuff). . Since my guys and I will be doing this for the first time next week, I 'd like to take advantage of your 'learning curve.' @JimmyFix-it - You are right. #2 - Your suggestion has plenty of merit though. However, if installed on drywall, it only protects one side. There are numerous ways to do this. . Yes, Schluter membranes can go over cement board. This creates a strong, waterproof tile backer that also functions as an uncoupling membrane. To properly seal a cement board for a shower, its important to first properly prepare the surface. The grid lines on the surface are incredibly helpful for installation and making neat cuts. KERDI BOARD: Waterproof Your Shower in 1 Day - Home Repair Tutor Kerdi Board vs. Cement Board. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. Cross your fingers and hope it's all OK. Not the best Kerdi Showcase. Hello D Zak! We tried adding water to the thinset, we tried . Not everyone knows how to do mud and lathe it's so old school plus it wears you out, ive been a setter for 27 yrs and I have yet to go back to one of my showers I installed using perma base or durock, with a liner, i have started using waterproofing such as redguard or aqua-defense. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. Wedi showers feature a pre-sloped base that is already installed. Once the primer is completely dry, use a roller or brush to apply a coat of your chosen KERDI membrane adhesive over the entire surface of the wall, overlapping the edges slightly for full coverage. Shower walls construction made easy with Kerdi-Board panels. - La Tuilerie Additionally, seal the space around any pipes and fixtures that can be found in the shower. Cement board is the industry standard when it comes to tile substrates and the most preferred among professionals when installing porcelain or ceramic tile. Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. @DMoore- OK, I agree that with redguard it would be redundant. Yes, you should prime drywall before installing KERDI in order to ensure proper adhesion and a successful installation. Do new devs get fired if they can't solve a certain bug? Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. Kerdi membrane prevents water damage and mold development. LONDON. Kerdi's systems are fairly reputable. Cement board is a heavy mess compared to drywall, and drywall is a heavy mess compared to Kerdi Board. Why unmodified thinset with kerdi? - qyvxl.dixiesewing.com And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! What do you mean it doesn't adhere? rev2023.3.3.43278. Putting this stuff on walls is difficult and time . Can you put KERDI over regular drywall? - remodelormove.com Allow the adhesive to cure for the amount of time recommended by the adhesives manufacturer. Not even the plumber's fault as it was just a bad valve. You can apply it on PVC, metal, slabs, walls, and floors. That was not a fault of the Kerdi, or the installation. x 33 ft. Waterproofing Membrane: Kerdi-Board 1/2 in. FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. En cliquant sur Accepter , j'accepte l'utilisation des cookies telle qu'elle est dcrite plus en dtail dans la Politique d'Utilisation des Cookies de Houzz. Cement board sucks up the moisture and as a result, the kerdi doesn't always stick as well to cement board. If you are laying tile on floors that are wavy or out of level, self-leveling underlayment is a great solution. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Self-leveling underlayment has many of the same advantages as a dry-pack mortar bed but doesnt require as much skill to install. The best answers are voted up and rise to the top, Not the answer you're looking for? The perfect fold is tricky and many of my first steam showers where built without the sealed slip joint. I also used a larger sized trowel than the one recommend by Schluter. Yup! builder, anti-builder, rebuilder -- Retired Moderator. Step 2: Determine the room's center. Yes, Hardie board needs to be waterproofed. Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. "..2) the kerdi band isn't stuck flat -- the edges in some spots are wavy. If you want added info there's an old Kerdi thread here. Using self-leveling underlayment takes careful prep work. If you are good with a trowel and understand how to set up and use screeds as a guide for leveling or forming the mortar, pouring a traditional mortar bed may be a good alternative to tile backer board, especially on uneven or sloping floors. First Kerdi can be installed on drywall or cement board. When cleaning thinset off of Schluter membranes, the manufacturer recommends using a wet sponge and taking care to avoid any scoring or inconsistencies on the surface of the membrane. Ready to join the 100,000+ homeowners matched with pros? Other mistakes I was making early on:-over working the thinset. To get the most protection from the cement board, it should be installed in a way that ensures it is waterproof, in addition to being secured properly with the right adhesive and screws. Jun 21, 2017. Sealing the tub flange for tile: 3 methods - DIYTileGuy It also features fleece webbing that allows for effective anchoring into thin-set mortar. Go with smaller bags or only mix half. Yes, Kerdi membrane can be installed over plywood. How do I align things in the following tabular environment? What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? Then cement, sand and water are mixed together to a crumbly consistency and floated over the lath to form a flat surface. She grew up surrounded by constant home improvement projects and owes most of what she knows to helping her dad renovate her childhood home. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. All shower/tub areas should have concrete board (I prefer hardiboard). Kerdi-Board is an extruded polystyrene foam panel, with reinforcing material on both sides, covered by fleece webbing for effective anchoring of thin-set mortar. The surface of Wedi is perfect for bonding. When it comes to installation, a Schlter system is typically easier to install than a cement board, and it also allows for more design freedom as it does not require a traditional waterproof layer. Another advantage is that the polyisocyanurate core of foam boards is waterproof. Should I use Kerdi membrane or cement backerboard? We just went through a learning curve on the Kerdi and Hardi. How to follow the signal when reading the schematic? Can I put Kerdi board over drywall? if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'remodelormove_com-box-3','ezslot_2',173,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0');Yes, you can put Kerdi membrane over cement board. A complete schluter shower kit is like $700-$900 depending on the size - this includes the pitched foam shower pan. The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. What was the indicator that let you know that spritzing was not enough, and that you needed to 'sponge' the Hardi? Kerdi can be installed first on drywall or cement board. The colour is different. The cement board core itself is not waterproof, but it can withstand water without falling apart. To line niche shelves, for instance. BTW the older Kerdi thread referencedwas excellent. Is it Sinful to put Kerdi over Hardi-backer? - Houzz Both may be effective substrates, but Kerdi Board boasts significant advantages. Will use the Schluter Shower system. First, it's super lightweight compared with the rest. WATCH HERE: https://www.youtube.com/watch?v=3TRLd2HYhbU&list=PLO47JMsdYGrkxM_ZkOc3lMnsVhTqj80bB#justdoityourself #lovingit #p. What is a word for the arcane equivalent of a monastery? Do you have any pictures? The benefit of using kerdi is we can lay it over drywall, We've added a "Necessary cookies only" option to the cookie consent popup. Caulk the gap. Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. It works well, is what Schluter recommends and I've never had an issue with it. Ideally the DalSeal TS would fold into the gap between the wall and ceiling concrete board. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. I used to "trust" the Kerdi and drywall until I had a shower that the valve broke inside the wall cavity four years after being put in. Rolling pin, good, now I can throw away my magnesium float.LOLCasey. But a mortar bed does have advantages. Waterproofing cement board is relatively simple and there are several different waterproofing products available. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. I'm thirsty. Step 7: Cut the Tile. x 5-ft. and 3 x 5-ft. sheets of cement board are sized for efficient use around bathtubs and showers. How to Install Kerdi Membrane - YouTube The cement board needs to be clean, free of debris, and dry. This will ensure a strong bond between the KERDI membrane and the substrate. Make sure to use multiple coats, if necessary. An extra layer of thinset is then added to the surface of the cement board to adhere the tiles in place. Install an Uncoupling Membrane Between Concrete and Tile. I posted a plea for help and Mongo and Bill both gave me good advice. Your email address will not be published. Kerdi does admit that you can use cement board. Building Panel: Price $ 119 00 $ 202 06 $ 279 00. Any recommendations? However if installed on drywall it is only protecting one side. Re: Kerdi on shower curbs. That would tell him where the edge of the framing needs to be. Because it can let some moisture wick through it, you have two choices: put a moisture barrier behind it to protect the structure, or, waterproof the front of it. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. I like to use a garden sprayer to keep the thirsty Kerdi wet. I have used kerdi, and I have applied it over cement board. And second, since it's foam, the board is super easy to cut with just a utility knife. the cost of the tile job. Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com I circled one area, but there are lots of these edges." - Lisa Jasper The Kerdi band should be smooth and flat - not wavy/ "3) there is no membrane of waterproofing on the hardboard across from the "wet wall" after 5 1/2 feet up. Whether or not you need a Kerdi membrane is a factor of use. Please feel free to reach out to our Product Support Team at 1-800-992-6273 if you need anything. Your real issues are the lack of proper corners on this shower. Ceramic and porcelain tile, more than almost any other surface material, need a stable . Once all areas have been properly waterproofed, the walls can be tiled and grouted to create a waterproof surface. there should be a small gap between the backer board and the tub. Can be cut to size easily using a utility knife. Retired Moderator - Theatre Guy (and computers). Finally, it is important to remember that any thin-set that has been exposed to moisture must be replaced. Finally, make sure to select a thinset that is appropriate for the job, check the manufacturers recommendation, and always follow the instructions on the product label. How "tidy" does the kerdi band need to be? Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. New England. But there are downsides. What changes do you suggest to make Bathroom looks more updated? http://www.schluter.com/schluter-us/en_US/Shower-System/KERDI-SHOWER-KIT/Schluter%C2%AE-KERDI-SHOWER-KIT/p/KERDI_SHOWER-KIT, We've added a "Necessary cookies only" option to the cookie consent popup.

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kerdi membrane over cement board

kerdi membrane over cement board