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. 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)). I'm guessing he put a 2x6 across for the curb? Cut the Kerdi membrane to size using a utility knife or scissors. We are still most comfortable with full plumber's pan over the curb, including glue-on preformed corners, and also a second layer (usually Kerdi but can be paint-on) on top of CBU wrap over curb. How did this project turn out? you should still water proof with a liquid membrane product like RedGuard. 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. Kerdi membrane prevents water damage and mold development. The Kerdi-Line prefab pans and drains make me feel way more comfortable with the waterproofing. Using cement board and a sheet membrane . 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. 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. Kerdi vs Redguard cost breakdown. : r/HomeImprovement - reddit Since KERDI is impervious, it does not deprive the mortar of its moisture. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. there should be a small gap between the backer board and the tub. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. taping and prepping cement board for tile - Home Improvement Forum The best answers are voted up and rise to the top, Not the answer you're looking for? We are no longer supporting IE (Internet Explorer), Do not Sell or Share My Personal Information. It is also essential that cement board joints and fasteners be sealed and waterproofed with the Kerdi Fix sealant to help prevent water from leaking into the wall and floor cavities. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'remodelormove_com-narrow-sky-1','ezslot_27',168,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-narrow-sky-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'remodelormove_com-narrow-sky-1','ezslot_28',168,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-narrow-sky-1-0_1');.narrow-sky-1-multi-168{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:15px!important;margin-left:auto!important;margin-right:auto!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}Waterproofing should also be done on other areas in the shower as well such as the corners, window sills and other areas where water can easily accumulate. 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. There is definitely skill & planning required to doit right. And for a more secure fit, you can also use screws. However, the answer you provided above suggests that the OP could omit a waterproof membrane, that I. Cut the shower tray to size. Both may be effective substrates, but Kerdi Board boasts significant advantages. Step 4: Place the Tile. Allow the primer to dry completely before proceeding with the KERDI installation. 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. rev2023.3.3.43278. I have to redo my tub surround due to moisture leaks and failing grout. If cement board had been used, most likely the damage would have been much less that what I have to deal with now. Houzz utilise des cookies et d'autres technologies de suivi similaires pour personnaliser mon exprience utilisateur, me proposer du contenu pertinent et amliorer ses produits et services. And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! A place where magic is studied and practiced? Significantly more time and effort is required to ensure a quality bond when using a modified thinset adhesive with KERDI, and for this reason, it is usually not recommended. 1. If you want to go to the extra effort of putting the membrane over drywall, there is no need to use greenboard. We tried adding water to the thinset, we tried . This allows for future compression and an area at the corner where things are more forgiving. That would tell him where the edge of the framing needs to be. It also helped me to work in smaller sheets. Step 3: Apply Thinset. Dean, our tile consultant, says glass mat backer board is his first choice due to the ease of installation, cost, and because his workers like it. You provide the pitch during the tile set. Why are physically impossible and logically impossible concepts considered separate in terms of probability? Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. It may take more than 1 beer:). #1 - Backer board has nothing to do with HD or any other big box. 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. Installing cement board involves placing the boards atop a layer of thinset adhesive, a process known as bedding. :/. 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. modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. This allows the cement to properly hydrate, resulting in To ensure the floor is clean, wipe it with a wet sponge. Your email address will not be published. Like the example above. 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. Sure, you can do it.just be sure to "spritz" or wet the hardi thoroughly before.it's pretty "thirsty.". 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. DensShield is one common brand. Do You Need Uncoupling Membrane Over Concrete? - On Secret Hunt But a mortar bed does have advantages. What is a word for the arcane equivalent of a monastery? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Any recommendations? I hope you made the guy flood test his work prior to tiling the shower floor. A hundred times better to have too much before you comb than too little. Can you put KERDI over regular drywall? - remodelormove.com The bag says Mapei floortile mortar, it was the only unmodified thinset at our hardware store. What type of thin-set mortar should I use when installing Schluter-KERDI? Blocking should be constant across this area when openings are larger than your fist. They can be installed on any type of support and can even be used to create partitions, with no structural support required. I hang Kerdi on cement board and fibercement board all the time. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. This creates a strong, waterproof tile backer that also functions as an uncoupling membrane. It only takes a minute to sign up. Kerdi Board is suitable for a number of interior applications. Another advantage is that the polyisocyanurate core of foam boards is waterproof. Additionally, the drywall should be primed with a latex primer before applying the Kerdi membrane. Any competent tile contractor would float the wall in mortar giving you a stronger, level, perfectly flat, and square surface to properly install tile. 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. 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. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'remodelormove_com-leader-2','ezslot_21',165,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-2-0');Once the seams are sealed, lay down a waterproof coating to the floor and walls of the shower space. We recommend our users to update the browser. RedGard, on the other hand, is a liquid waterproofing membrane made by Custom Building Products. Aquadefense is approved by IAPMO for use as a shower pan liner, but be sure to check your local building codes, as some areas of the country still require the PVC liner. 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. Wedi showers feature a pre-sloped base that is already installed. Schluter approves their waterproof Kerdi membrane over drywall. Yes, it is possible to put Kerdi over regular drywall. First, it's super lightweight compared with the rest. When installed, Kerdi Board creates a substrate that is level, flat, square, plumb, and dimensionally stable. Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. GoBoard is a kind of backer board because the main elements of a backer board are cement, silica, fiberglass, etc. When installing KERDI with unmodified thin-set mortar over particularly dry and porous substrates, it is recommended to wet the substrate first, in order to help prevent premature drying or skinning of the thin-set mortar. The taping knife at a low angle makes an enormous difference, and I'm very grateful for that hint. Kerdi can even be installed over drywall. Politique d'Utilisation des Cookies de Houzz. This is the traditional tile backer. The colour is different. Continuing Education for Architects & Designers. 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 will include installing its components, such as drain plate and drain collar, as well as Kerdi Band for further protection of seams and corners. I can take a bit of it off the wall and roll it into a ball. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Shouldn't take too long, maybe an hour or so. 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. Additionally, you can use KERDI-BAND around corners, seams, and joints to help with a waterproof installation. This is a very effective and popular method of installing tile, and one that ensures the tile doesnt crack. Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? Kerdi board is a kind of waterproofer because these kinds of boards are made of XPS foam. Cement board is the industry standard when it comes to tile substrates and the most preferred among professionals when installing porcelain or ceramic tile. WATCH HERE: https://www.youtube.com/watch?v=3TRLd2HYhbU&list=PLO47JMsdYGrkxM_ZkOc3lMnsVhTqj80bB#justdoityourself #lovingit #p. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. Best substrate for kerdi membrane - nsbu.treviso-aug.it We like that the Kerdi membrane material installs easily over almost any substrate, including standard wallboard. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. 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. Kerdi can be installed first on drywall or cement board. 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? Unlike cement boards, you can bend this material without it breaking. This will help to extend its lifespan and make sure it looks its best for years to come. Waterproofing cement board is relatively simple and there are several different waterproofing products available. All shower/tub areas should have concrete board (I prefer hardiboard). ".1) is is okay to use kerdi board instead of ditra on the floor? Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. We use a pump action garden sprayer and its usually dry by the time we clean the sprayer. Now there's nothing particularly wrong with fiber-cementit's just not my first choice. If you ensure that silicone goes in and that the thin-set and grout do not bind there you should be good to go. First Kerdi can be installed on drywall or cement board. The kerdi membrane will probably do the same, and its regularly installed over drywall which is probably less stable. That was not a fault of the Kerdi, or the installation. Sheets of glass mat gypsum are made from water-resistant silicone-treated gypsum, reinforced on both sides by fiberglass mats. And second, since its foam, the board is super easy to cut with just a utility knife. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. Kerdi's systems are fairly reputable. After installing your mud bed, make sure it is fully cured before applying Aquadefense. Seams and joints should also be waterproofed and caulked to prevent water from seeping through. . The major drawback to cement boards is their weight, as they are incredibly heavy and can be difficult to cut. I usually use Durock. Can you put Kerdi membrane over plywood? - KnowledgeBurrow.com The foam core surrounded by synthetic cloth on both sides and adhered with resin glue is. Using Kerdi Schlueter membrane with cement board. - Houzz 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. . Additionally, all thin-set mortars should be suitable for use in wet or feature depths of up to 1/8 inch. The gridlines printed on the surface are beneficial for the installation process, also allowing for quick, neat cuts with a utility knife. Ceramic Tile Advice Forums - John Bridge Ceramic Tile, http://www.youtube.com/watch?v=G4HjHT6_cUo, http://www.youtube.com/watch?v=wEt6irjJCI0, My master suite addition & full bath to 1/2 bath renovation. . It is designed to form a waterproof layer between cement board and tiles, helping create a watertight installation. Everyone knows brick and stucco, but what about fiber cement and metal? Schluter Kerdi on regular drywall - GreenBuildingAdvisor 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.
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