Kerdi Shower Pan and Cement Board Walls - DIY Home Improvement Forum Continuing Education for Architects & Designers. First, you would waterproof with your favorite liquid waterproofing membrane of . While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. The drywall's back side fails, and it's just as bad or worse than it was on the tile side. Slap it up comb it out, leave every ridge tall and perfect. Good luck with your project. To ensure that the Kerdi is completely dry prior to tiling, inspect the inside of the membrane for any signs of moisture or condensation. Yes, it is possible to put Kerdi over regular drywall. Caulk the gap. It could take longer if the space is particularly wet or humid. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. This is often accomplished by filling any holes and cracks in the wall with appropriate spackling or patching material. Making statements based on opinion; back them up with references or personal experience. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. #4 You could be adding a good 1000 pounds to your install too. Should I use Kerdi membrane or cement backerboard? Can Kerdi membrane be installed over painted drywall? It is designed to form a waterproof layer between cement board and tiles, helping create a watertight installation. Fiber cement board is a variation of cement board that is made from compressed cement and sand and reinforced with wood fibers throughout. 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. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . You'll know the RG is dry when it turns reallllly dark bright red as opposed to the pinkish color when applied. To prevent those movements from transferring to the tile floor, consider installing an uncoupling membrane between the concrete and tile surfaces. The great thing about Kerdi Board is that it is lightweight and easier to maneuver. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? Wedi Board vs Cement Board vs Kerdi Board - The Ultimate Home Living Blog Hardie board is thirsty, but that's way too fast. 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. 120 sq feet including the floor. 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. The site is called floorelf.com. To waterproof Hardie board, you should choose a quality sealer that is designed for use on cement-based sidings. Everyone knows brick and stucco, but what about fiber cement and metal? A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. GoBoard is a kind of backer board because the main elements of a backer board are cement, silica, fiberglass, etc. There's a really great manual (with diagrams) that makes this all easier to understand. 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. Yes, Kerdi membrane can be installed over plywood. Both Kerdi Board and cement board are designed to smooth out uneven spots on the installation surface, create an unbending layer that wont flex underfoot, and also provide a waterproof barrier. Waterproofing cement board is relatively simple and there are several different waterproofing products available. Tile Backer Board Breakdown - DIYTileGuy It is a topical waterproofing layer that is put over the substrate to keep water from getting to the wood frame and nails. Additionally, all thin-set should be allowed to cure for 24 hours before tiles are installed. Drywall under Kerdi would have been a better choice. Can I install Kerdi board just on the walls of my shower and use a PVC membrane on the floor? However, you do still have to take care to waterproof the seams and the fastener penetrations to create a waterproof assembly. Yeah it seems that the only products that will be compatible with cement board and the kerdi membrane are bostik ditra-set and schluter all-set (or one of schluters other products). The 30-in. Cement board (cbu) is not waterproof, but is not damaged by being wet. Thanks for contributing an answer to Home Improvement Stack Exchange! The perfect fold is tricky and many of my first steam showers where built without the sealed slip joint. Well, I'm going to give you three different ways to seal the backer board at the tub flange. Thanks. Modified thin-set mortars must dry for the polymers to coalesce and form a hard . Since the existing wall board will be removed, I'd prefer to go a little extra and install a water proof cement board type base so the tile has a solid substrate even if it were to get wet, such as from a plumbing leak, or from infiltration on an exterior wall (as unlikely as that might be). How should I transition between cement board floor and alcove tub? I've never had a failure. All it takes is the right preparation. We just went through a learning curve on the Kerdi and Hardi. Additionally, the drywall should be primed with a latex primer before applying the Kerdi membrane. We are no longer supporting IE (Internet Explorer), Do not Sell or Share My Personal Information. It installs with screws, then you tape the joints & screw holes and install your tile. I'm thirsty. Can I put Kerdi board over drywall? Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com I also used a larger sized trowel than the one recommend by Schluter. Recovering from a blunder I made while emailing a professor, Minimising the environmental effects of my dyson brain. "..2) the kerdi band isn't stuck flat -- the edges in some spots are wavy. . Should I redo this wall to avoid a mold sandwich? Also - use a good thinset. Can you remove tile from Kerdi membrane? After priming, use an approved adhesive to adhere the KERDI membrane to the drywall, making sure the edges are well sealed and joints are tight.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[468,60],'remodelormove_com-medrectangle-4','ezslot_12',156,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-medrectangle-4-0'); A successful installation of KERDI requires well-prepared surfaces and a proper application, so take the time to properly prime the drywall before installation. Installation. A successful tile installation largely depends on the substrate that the tile is attached to. Will be doing a bathroom gut and will be laying durock cement board over plywood sub floor. Schluter Kerdi-Shower-T/-TS/-TT 48 in. What type of thin-set mortar should I use when installing Schluter-KERDI? Step 3: Apply Thinset. With Wedi products, the compound curves are easy to produce quickly. Kerdi Membrane Installation (Step-by-Step Installation Guide) Install the Schluter Kerdi membrane over the backer board using the correct mortar. Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. 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. If you want to go to the extra effort of putting the membrane over drywall, there is no need to use greenboard. Once its cleaned, use caulk to seal all of the seams where the cement board meets the walls. RedGard can be applied to cement board panels in two ways: Roll it on the wall with a 3/4-inch nap roller or spray it on the wall. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Keep in mind that most tile setters err on the side of caution and brush a waterproofing membrane on top of cement board when it is in wet areas like showers or tub surrounds. They are designed to provide a waterproof, vapor-tight layer to the substrate, which in this case would be the cement board. When applying thin-set mortar, the manufacturers instructions should be followed closely. It is easier to cut than cement board, it is mold resistant, and it has a built-in moisture barrier. When applying the thin-set, it should be applied in such a way that it fully fills any empty space between the Tile and Schluter product and is solid enough to support the weight of the tiles being installed. Once this is done, continue the installation by following the directions for the particular Kerdi product being used. We use a pump action garden sprayer and its usually dry by the time we clean the sprayer. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. You have to seal every little hole in the floor so the underlayment doesnt seep into spaces below. Kerdi membrane can be used on cement board, drywall, and, as you may have guessed- greenboard. Kerdi does admit that you can use cement board. Kerdi Membrane not sticking to cement board - John Bridge BTW the older Kerdi thread referencedwas excellent. Kerdi's systems are fairly reputable. Yes, KERDI membrane will stick to cement board. We tried soaking the cement board and applying the kerdi in small sections. However if installed on drywall it is only protecting one side. 4. 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. When I tried putting up the first sheets, which were only 36" x 39", and even though I had SOAKED the hardi, to the point water was pooling on the floor, the thinset was already drying before I got the Kerdi up, and I couldn't get it to adhere properly no matter how hard I tried. That would tell him where the edge of the framing needs to be. Builder saying he doesn't want to put my trim tile in here. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19? Thanks to all for the feedback. Some being easier to work with than others. Make sure to use multiple coats, if necessary. Glass mat gypsum board is a better choice. Our thinset was more watery than the videos, but it still managed to dry out quickly, even in the time it takes to apply the small corners in our shampoo niche. Yes, Hardie board needs to be waterproofed. 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. Best Cement Boards for the Shower - The Spruce There is definitely skill & planning required to doit right. However, the answer you provided above suggests that the OP could omit a waterproof membrane, that I. 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. If you are looking for a way to minimize height buildup and eliminate a large level difference at thresholds, a mat product is a good solution. No, you do not need to install a vapor barrier, as Kerdi Board is the vapor barrier. Yes, KERDI membrane will stick to cement board. The grid lines on the surface are incredibly helpful for installation and making neat cuts. The most important thing to remember when applying the membrane over the cement board is to make sure the surface is clean and free of any debris, dust or other contaminants. Cement board sucks up the moisture and as a result, the kerdi doesn't always stick as well to cement board. Since KERDI is impervious, it does not deprive the mortar of its moisture. Connect and share knowledge within a single location that is structured and easy to search. Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving independently? I look at ceramic tile as a lifetime-of the house-product, so I use the best material for the job.I prefer to use cement board as the substrate with the Kerdi on top. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. Here's how to get it right the first time, If you've got a steady hand, a few easy-to-find supplies and patience, you can install a tile backsplash in a kitchen or bathroom, Step 4 in swapping your tub for a sleek new shower: Pick your waterproofing materials and drain, and don't forget to test, Work with your contractors and installers to ensure a safe, stylish curb that keeps the water where it belongs, Get the benefits of a time-honored ritual without firing up the coals, thanks to easier-than-ever home steam systems, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Out With the Old Tile: 8 Steps to Prep for Demolition, Convert Your Tub Space Into a Shower Waterproofing and Drainage, Steam Showers Bring a Beloved Spa Feature Home. Additionally, if the cement board isnt waterproof, it can also cause mold and mildew issues, as well as dry wall damage from the moisture seeping through. All shower/tub areas should have concrete board (I prefer hardiboard). I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. The taping knife at a low angle makes an enormous difference, and I'm very grateful for that hint. They are square. The surface of Wedi is perfect for bonding. What changes do you suggest to make Bathroom looks more updated? Kerdi Membrane is a product of Schluter systems. Can you put KERDI over regular drywall? - remodelormove.com It works well, is what Schluter recommends and I've never had an issue with it. First Kerdi can be installed on drywall or cement board. Plus, most self-leveling formulas harden very fast, so you have to plan carefully so you can mix and pour quickly. Why does the plumbing rough need to be moved? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. If so, that means breaking up the floor pan. link to What Kind Of Paint For Garage Walls? It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. I appreciate your help and your quick response. Run a damp towel over the cement board surface to dust . Various products can be used to waterproof shower walls such as water-resistant drywall and cement backer boards. Wedi showers feature a pre-sloped base that is already installed. When it comes to selecting thinset for cement board, there are a few important factors to consider. It allows you to easily and quickly create tile-ready elements in bathtub surrounds and platforms, vanities, showers, shelving, and much more. Sledge hammers for the floor, that might take a bit of time. 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. 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. Hi David. If I go the kerdi membrane route, do I still need to tape the joints before installing the kerdi membrane . Asking for help, clarification, or responding to other answers. Moisture resistant can cause similar problems, and there is absolutely no advantage to it. This is a bit difficult to answer as it depends on the particular application for the floor system. The Kerdi-Line prefab pans and drains make me feel way more comfortable with the waterproofing. Can You Put RedGard On HardieBacker Board? - Next Modern Home Using Kolmogorov complexity to measure difficulty of problems? Installation instructions vary depending on the type of Kerdi membrane being used, but typically the membrane is applied directly to a clean, dry plywood surface that is free from dust, dirt, and other debris. Connect and share knowledge within a single location that is structured and easy to search. This liquid waterproofing solution does more than keep water away, it also promotes tile adhesion and prevents cracking. Go with smaller bags or only mix half. However, a cement board is generally easier and less expensive to replace if a repair is needed. Cross your fingers and hope it's all OK. Not the best Kerdi Showcase. Hello D Zak! Additionally, seal the space around any pipes and fixtures that can be found in the shower. Here are the fundamentals of tile installation over cement board. Cement boards are typically capable of withstanding larger amounts of water, while a Schlter system is designed to hold up well only in dry conditions. A good rule of thumb is 24 hours per inch of thickness, then one more day on top of that to be sure. Ready to join the 100,000+ homeowners matched with pros? One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. Why is this the case? If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? Rolling pin, good, now I can throw away my magnesium float.LOLCasey. A complete schluter shower kit is like $700-$900 depending on the size - this includes the pitched foam shower pan. is that because water doesn't really hit that area?" - Lisa Jasper That's pushing it but should be fine. Kerdi membrane is a waterproofing material that is designed to be used in wet areas such as bathrooms and showers before tiles are installed. These multifunctional tile substrate and building panels are thus perfect for creating bonded waterproofing assemblies with tile coverings. Properly waterproofed Hardie board should last for many years. The curb doesn't have to be any wider than a 2x4. Step 8: Allow to dry. Kerdi can even be installed over drywall. This means that even if your waterproofing system leaks, the cement board will remain intact. How to follow the signal when reading the schematic? Can you put Kerdi membrane over plywood? - KnowledgeBurrow.com craft paper or plastic is great if the inspector wants it but it is (should be) doing nothing for a tub surround that has HB/redgard/thinset/tile. Kerdi on shower curbs - JLC-Online Forums Installation; As the GoBoard is very lightweight, it becomes easy to . Actually if you watch any pros work (not on crappy shows) on TV you will see them use backer board 99% of the time. We mixed the thinset, it wasn't as smooth as the utube video, but it was close, and we gave it ten minutes. Maybe try another brand of thinset? Why is there a voltage on my HDMI and coaxial cables? It is important to seal any imperfections in the drywall to ensure a long-lasting installation and to minimize water infiltration. The shower tray eliminates the need for a mortar bed. ".1) is is okay to use kerdi board instead of ditra on the floor? Required fields are marked *. Its important to note that Kerdi membrane is not a structural base layer, so plywood should be installed and reinforced as necessary based on load requirements. I ended up putting up a thin, skim-coat of thinset all over the hardi board, letting it dry, and then putting up the kerdi. Yup! 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. Kerdi 3 ft. 3 in. In order to determine which tile underlayment is right for your project, you need to know which issue youre trying to solve whether its preventing subfloor cracks from transferring to the tile, soundproofing, moisture protection, or providing more rigidity to the tile. 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. And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! Re: Kerdi on shower curbs. Manufactured by Schluter Systems, Kerdi Board is a multifunctional tile underlayment and construction panel, that can also be implemented for forming bonded waterproof assemblies with tile coverings. You peeled it off? An additional layer of sealant can also be applied on the seams for extra protection and water resistance. Then you can apply a thin layer of KERDI-FIX to the board, the membrane over top . What do you mean it doesn't adhere? Do You Need Uncoupling Membrane Over Concrete? - On Secret Hunt Out of curiosity, why are any of you suggesting backerboard at all? ! A mortar wall is better and can be customized easier. How do you show the depth of a hole in a drawing? Unlike cement boards, you can bend this material without it breaking. Wedi vs. Kerdi Waterproof Membranes: Which Is Better? Install an Uncoupling Membrane Between Concrete and Tile. But I did want to understand the cost breakdown as the walls then become WAY more expensive than it would be with Redguard. Thinset with a latex acrylic modifier is best for interior projects, but if youre installing outdoors, you should use thinset with a polymer modified (PM) compound for greater moisture resistance. The big issue with cement board is that the thinset will skin over really quickly. Cement board is typically used in wet areas, such as bathrooms and areas with a lot of moisture, because it is waterproof and provides a level of protection from water damage and long-term moisture exposure.
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