Shower walls construction made easy with Kerdi-Board panels. - La Tuilerie 1. Cement board is particularly vulnerable to water damage, so waterproofing can help protect it and help it last longer. If done according to manufacturers instructions, it will seal nicely. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The shower is ready for tile. Additionally, the use of modified thinset with KERDI could lead to cracks and other issues down the line as the modified thinset can shrink and pull away from the KERDI membrane over time. It is a topical waterproofing layer that is put over the substrate to keep water from getting to the wood frame and nails.
Kerdi Membrane not sticking to cement board - John Bridge This will help to ensure that all drywall is completely covered. How do I align things in the following tabular environment? Cement board is the most common and widely-known backer board. Additionally, all thin-set should be allowed to cure for 24 hours before tiles are installed. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. Here is a video off the Schluter-Kerdi website that describes how to apply the waterproof membrane on top of the substrate (gypsum board in this case): http://www.schluter.com/schluter-us/en_US/Shower-System/KERDI-SHOWER-KIT/Schluter%C2%AE-KERDI-SHOWER-KIT/p/KERDI_SHOWER-KIT. If I go the kerdi membrane route, do I still need to tape the joints before installing the kerdi membrane . 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. If you are laying tile on floors that are wavy or out of level, self-leveling underlayment is a great solution. The problem is on the back side of the drywall, which is not protected. Let the mortar dry for 24 hours then test the shower. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. You provide the pitch during the tile set.
Kerdi Membrane Over Plywood ThePlywood.com RedGard On Hardibacker Board. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. You just need a hammer and wonderbar for the walls. Make sure the floor is level in the shower. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. What I would be most scared off is the fact that no inside or outside corners appear to have been used. Moisture resistant can cause similar problems, and there is absolutely no advantage to it. An additional layer of sealant can also be applied on the seams for extra protection and water resistance. (3ft-3in wide). How to follow the signal when reading the schematic? Take care to cut the KERDI membrane to the appropriate size and apply it to the wall, ensuring that it is properly adhered and that the edges are sealed with KERDI sealant. Kerdi-Shower-T/-TS/-TT is a prefabricated sloped shower tray with integrated Kerdi waterproofing. Step 8: Allow to dry. I don't want to use the Ditra membrane product but rather tiles directly over the cement boards. Bulk update symbol size units from mm to map units in rule-based symbology. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. It also features fleece webbing that allows for effective anchoring into thin-set mortar. Once the adhesive has been applied and has had time to properly cure, then the KERDI membrane can be applied to the wall. :/. The site is called floorelf.com.
HardieBacker with Hydrodefense instead of Kerdi Board? : r/DIY - reddit 173 upvotes. It works well, is what Schluter recommends and I've never had an issue with it. You'll know the RG is dry when it turns reallllly dark bright red as opposed to the pinkish color when applied. However if installed on drywall it is only protecting one side. The fastest method [for me and possibly other dilettants] is to stroke the knife at a diagonal to the comb marks, top down, center out, pushing all the air before you with short, overlapping strokes.-Thinset needs to be pretty darn wet: Needs to stay put when combed, but should be soft and shiney. Why do you think each board should be able to move at all let alone independently? Other mistakes I was making early on:-over working the thinset. After today's tutorial, you'll gain the confidence to transform your old bathroom into a new space. Given the complexity, its easy to see why even experienced tile setters avoid dry-pack mortar and use backer board instead when they can. Set ceramic and stone tile over the KERDI membrane with unmodified thin-set mortar, including large format tiles. 3. #2 - Your suggestion has plenty of merit though. 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. Builder saying he doesn't want to put my trim tile in here. Maybe try another brand of thinset? In general, the Schlter system is typically more expensive than a cement board, and some people may find this an attractive option for its long lasting, easy to maintain qualities. I have corrugated metal shower surround & grab bars. Send us an email: , What type of thin-set mortar should I use when installing Schluter, Using a Prefabricated Shower Tray and Ramp.
Kerdi Membrane Installation (Step-by-Step Installation Guide) Overall, waterproofing behind and around shower tile is a critical part of any installation to ensure that the area is adequately protected from water and moisture damage. Caulk the gap. 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? Porcelain and ceramic tiles are stiff and hard materials, so if they are installed on an unlevel or bouncy surface they are highly susceptible to cracking. On the 'rolling pin', it actually wasn't the kitchen kind, but rather a very heavy metal roller DH had from some sort of fabrication table. This feature makes building the base structure much easier and more cost . We want that inside corner able to move. ps, now that you don't need it anymore you can throw that useless cheap piece of crap magnesium float my way. The big issue with cement board is that the thinset will skin over really quickly. Thanks to all for the feedback. Ratings (91) (5) (91) (3 .
Kerdi on shower curbs - JLC-Online Forums Furthermore, if another trade, such as the shower glass installers, makes a mistake then you'll be . Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. Can be cut to size easily using a utility knife. Cut the shower tray to size. The 1/4-inch-thick board is typically used on floors and countertops. 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. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Ceramic and porcelain tile, more than almost any other surface material, need a stable . But a mortar bed does have advantages. The cement board needs to be clean, free of debris, and dry. Additionally, seal the space around any pipes and fixtures that can be found in the shower. This thread is 9 years old and it's the Hardi board that's thirsty not the Kerdi. 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. If youre not careful, the boards can also leave behind abrasive sandy crumbs that can cause damage to your shower base or tub. Please feel free to reach out to our Product Support Team at 1-800-992-6273 if you need anything. Following the instructions for the product being used and ensuring that all of the necessary steps are followed will help to ensure a successful installation. My idea is to block in and install the tub in the existing corner, erect the new wet wall, and use hardi-backer to shim the wall out over the tub flange, then apply kerdi over the whole thing.Does kerdi take offense at being installed over hardi? What are the differences between "paperless drywall" and "cement board"? 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. Creative, C'mon over for a beer!
See the foam bench and the corners. A successful tile installation largely depends on the substrate that the tile is attached to. 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? I trust it and have never had a callback. Tile can be installed directly over Kerdi-Board using the thinset method; For use with ceramic and natural stone tile; Return Policy; California residents. Additionally, it is important to waterproof cement board before tiling, as the grout and tiles can help keep the board watertight. Foam-core tile backing board has two big advantages over other backer boards. Kerdi Membrane is a product of Schluter systems. Why do small African island nations perform better than African continental nations, considering democracy and human development? Bathroom closets are often catch-alls for anything and everything remotely related to self-care. An extra layer of thinset is then added to the surface of the cement board to adhere the tiles in place. The main issue caused by non-waterproof cement boards is the eventual warping and damage to the tiles, making it difficult and costly to fix without removing all the tile and starting over. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. 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. Step 7: Cut the Tile. If installing large format tiles (over 15"), be sure to give the Aquadefense at least 8 hours to cure first. Its essential to protect surrounding wall and floor surfaces from water or moisture damage that can occur in these areas. Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. Waterproofing cement board is relatively simple and there are several different waterproofing products available. We ended up sponging the Hardi and wetting and booking the Kerdi (a la wallpaper), and that made the installation go much smoother. So long as the seams and joint areas are properly prepared, the panels can also provide waterproofing. Kerdi Board is also significantly lighter in terms of weight than cement board, meaning they can be transported and lifted into place with ease evening hauling five panels at a time should be no problem. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. Blocking should be constant across this area when openings are larger than your fist. When screwed to the framing, thin strips of cement board fracture more easily than thin strips of fiber-cement. 4. If you ensure that silicone goes in and that the thin-set and grout do not bind there you should be good to go.
liquid waterproofing (redgard) over durock cement board - bathroom You have to seal every little hole in the floor so the underlayment doesnt seep into spaces below. To create a watertight shower assembly, we installed Schluter's Kerdi membrane over the drywall, just as we would for tile.Write by:. There is no cutting or fitting of boards, and a mortar bed is good for leveling and flattening uneven or out-of-level floors, which are common in old houses. Making statements based on opinion; back them up with references or personal experience.
Best Cement Boards for the Shower - The Spruce "thanks in advance :-) I know so little about this stuff, but when I watch videos (made by schluter-kerdi) everything looks so tidy and perfect - maybe that's not realistic'''" - Lisa Jasper It should look better than that and it's hard to tell but the wall stud spacing looks extreme and more than 16" I could not see if the screw heads where covered in the photos and in the one picture you can see that the screw and washer fitting where not covered.
Modified vs. Unmodified Mortar With Kerdi Membranes Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Yes, it is possible to put Kerdi over regular drywall. I agree that gypsum seems very questionable anywhere in the wet areas of a shower. I would fear leaks in all corners of this shower. The taping knife at a low angle makes an enormous difference, and I'm very grateful for that hint. If you can paint a wall, you can use RedGard. 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. Redgard is a similar product. I think it is engrained in me to do that so I forget to mention it. 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. "..2) the kerdi band isn't stuck flat -- the edges in some spots are wavy. Asking for help, clarification, or responding to other answers. Connect and share knowledge within a single location that is structured and easy to search. This will ensure a strong bond between the KERDI membrane and the substrate.
Kerdi vs Redguard cost breakdown. : r/HomeImprovement - reddit 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). Prime first to create a flat, uniform surface that is free of dust, grease and other debris. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. Installation is simple- just trowel a layer of thin-set adhesive on the floor and embed the mat in it, then fill the cavities with thin-set. First, its super lightweight compared with the rest. In a perfect job, it will waterproof. Cement board is a heavy mess compared to drywall, and drywall is a heavy mess compared to Kerdi Board. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. A complete schluter shower kit is like $700-$900 depending on the size - this includes the pitched foam shower pan. Why are physically impossible and logically impossible concepts considered separate in terms of probability? I have to redo my tub surround due to moisture leaks and failing grout. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. This will ensure that the coating sticks to the cement board. This will help protect the cement board from water damage, and is often a specific type of coating designed for use with cement boards. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. I want to mount a cast iron bathtub, but not pull down my 1905 plaster and lath. The cement board needs to be clean, free of debris, and dry. 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. The Kerdi is essentially replacing the backerboard. Kerdi 3 ft. 3 in. 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. We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. Too little, and the kerdi will never show you gray, no matter how you sweat. Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving independently? 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. If a pipe or faucet ever leaks in the wall this will ruin your shower. While cement board and grout are not waterproof, Kerdi is and can even be directly installed over drywall. that's home depot homeowner installation method. 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. Installation. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.
Can Kerdi membrane be installed over painted drywall? 120 sq feet including the floor. 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)). Kerdi Board as a whole is much easier to install than Cement Board. Should I redo this wall to avoid a mold sandwich? Kerdi does admit that you can use cement board. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. there should be a small gap between the backer board and the tub. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . 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. I think the first one I used was cheap and that was part of the problem.
Using Kerdi Schlueter membrane with cement board. - Houzz I hope you made the guy flood test his work prior to tiling the shower floor. Some being easier to work with than others. Thanks to Mongo's earlier post, we knew we'd have to spritz the Hardi -- but found that even that wasn't quite enough. We sponge water onto the cement board. For the floor I make a dry mix mud base and then the Kerdi membrane. The Schlter system tends to be more durable than a cement board, but it also depends on the particular application and the weather. 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). No, that doesn't sound right. First Kerdi can be installed on drywall or cement board. 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. Schluter Kerdi-Shower-T/-TS/-TT 48 in. Not to mention, its warrantied by Schluter, giving you the ultimate peace of mind. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. Applying a conventional cement backer board to such a structure is almost impossible. It only takes a minute to sign up. #4 You could be adding a good 1000 pounds to your install too. Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. Foam-core tile backing board has two big advantages over other backer boards. 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. It is important to seal any imperfections in the drywall to ensure a long-lasting installation and to minimize water infiltration. I just a few weeks ago put kerdi on top of hardi-board in my shower and it was PAINFUL! if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'remodelormove_com-mobile-leaderboard-1','ezslot_24',166,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-mobile-leaderboard-1-0');If cement board is not waterproof, it can negatively impact the integrity of the tile that is installed on top of it, and can lead to a variety of issues.
What type of thin-set mortar should I use when installing Schluter-KERDI? This liquid waterproofing solution does more than keep water away, it also promotes tile adhesion and prevents cracking. Cement board is a good, reliable backer board that works well on both floors and walls. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust!
Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com The product involves an extruded polystyrene foam panel, with specialized reinforcement materials on both sides. The Kerdi membrane should be applied with the standard procedure, using a hogg brush or a notched trowel to spread the thin-set mortar and a roller to ensure appropriate adhesion. 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.
Sweeby-Can you clarify- I undestood that the thinset would tend to dry out from the thirsty hardi or skim over from the air; so how does booking the Kerdi help with the first? We like that the Kerdi membrane material installs easily over almost any substrate, including standard wallboard. 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. And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! Can you remove tile from Kerdi membrane?
Is it Sinful to put Kerdi over Hardi-backer? - Houzz