You just need a hammer and wonderbar for the walls. 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)). PROBLEM SOLVED for Tub Flange when Installing Cement Board and Tile. The difference between the phonemes /p/ and /b/ in Japanese. All shower/tub areas should have concrete board (I prefer hardiboard). As a contractor, I have been using Kerdi since it came out. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. 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. Additionally, it is important to waterproof cement board before tiling, as the grout and tiles can help keep the board watertight. Yes, you should prime drywall before installing KERDI in order to ensure proper adhesion and a successful installation. 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. 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. This will help to extend its lifespan and make sure it looks its best for years to come. It also helped me to work in smaller sheets. For the floor I make a dry mix mud base and then the Kerdi membrane. And we are using a drippy mixture, it slides off the trowel. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. Can I install Kerdi board just on the walls of my shower and use a PVC membrane on the floor? How to follow the signal when reading the schematic? What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19? Kerdi can be installed first on drywall or cement board. is the contractor creating a waterproof schluter-kerdi shower? See the foam bench and the corners. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. You can apply it on PVC, metal, slabs, walls, and floors. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. All it takes is the right preparation. Some being easier to work with than others. We are DIYers who have already remodeled one bathroom successfully, but this is our first time using The Schluter shower system. He would take his rough opening measurement and subtract the thicknesses of the tile, the cement board, and in his unique install method the purpleboard. Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. In jobsite conditions and over a long time, who knows. The problem is on the back side of the drywall, which is not protected. I also used the Kerdi drain. By the time you switch from the RG application to the Kerdi installation, it should be dry. 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. 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. Ceramic and porcelain tile, more than almost any other surface material, need a stable . Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. is that because water doesn't really hit that area?" - Lisa Jasper That's pushing it but should be fine. Additionally, all seams should be sealed with Kerdi Fix and covered with fleece. A.Sean Gerolimatos, technical services manager for Schluter Systems, responds: With a few exceptions, unmodified thinset mortar is required for setting ceramic and stone tile over Kerdi membranes (800/472-4588, www.schluter.com ), as well as for bonding overlapped seams and connections to Kerdi drains. They are available in thicknesses of 3/16, 3/8, 1/2, 3/4, 1, 1-1/2, and 2 (5, 9, 12.5, 19, 25, 38, and 50 mm). 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. I would fear leaks in all corners of this shower. It only takes a minute to sign up. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? 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. 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. Yes, KERDI membrane will stick to cement board. Cement board comes both in 1/4-inch-thick and 1/2-inch-thick versions. It fell right off? Depending on factors such as room temperature, humidity, and ventilation in the area, this could take anywhere from 1 to 3 days. The site is called floorelf.com. 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. . My floor tiles are 2" x 2"." - Lisa Jasper No - you can not use Kerdi Board on the floor. But I can't give you a +1 because telling someone to mortar all the walls in a large shower is like telling them to make an ice sculpture. If I go the kerdi membrane route, do I still need to tape the joints before installing the kerdi membrane . I have corrugated metal shower surround & grab bars. I hope you made the guy flood test his work prior to tiling the shower floor. This is necessary to ensure that the membrane will adhere properly to the drywall. I've never had a failure. Jessica considers herself a home improvement and design enthusiast. 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. We ended up sponging the Hardi and wetting and booking the Kerdi (a la wallpaper), and that made the installation go much smoother. Look at it this way; Withe Kerdi, you either trust it or you don't. However, a cement board is generally easier and less expensive to replace if a repair is needed. Are there tables of wastage rates for different fruit and veg? If a pipe or faucet ever leaks in the wall this will ruin your shower. Let the mortar dry for 24 hours then test the shower. An extra layer of thinset is then added to the surface of the cement board to adhere the tiles in place. 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. 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. This creates a strong, waterproof tile backer that also functions as an uncoupling membrane. Why do small African island nations perform better than African continental nations, considering democracy and human development? We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. Connect and share knowledge within a single location that is structured and easy to search. The colour is different. In . A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. 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. 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. . Any recommendations? It works well, is what Schluter recommends and I've never had an issue with it. Need help liner vs liquid membrane question. There are numerous ways to do this. Depending on your project and the specific cement board you are using, you will want to select a thinset appropriate for both.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[468,60],'remodelormove_com-large-leaderboard-2','ezslot_15',158,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-large-leaderboard-2-0'); The two primary criteria to help guide your selection are the type of cement board you are using and whether you are installing it indoors or outdoors. When screwed to the framing, thin strips of cement board fracture more easily than thin strips of fiber-cement. Is it ok to fasten a shower surround to Schluter Kerdi curb? the cost of the tile job. (3ft-3in wide). We use a pump action garden sprayer and its usually dry by the time we clean the sprayer. 1. However, the answer you provided above suggests that the OP could omit a waterproof membrane, that I. Hang the cement boar. Politique d'Utilisation des Cookies de Houzz. Plus, most self-leveling formulas harden very fast, so you have to plan carefully so you can mix and pour quickly. RedGard can be used on a wide range of interior and exterior surfaces. 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. A place where magic is studied and practiced? Using self-leveling underlayment takes careful prep work. 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. It is important to seal any imperfections in the drywall to ensure a long-lasting installation and to minimize water infiltration. On a vertical surface, very little moisture . Gettin' a little delirious. Modified thin-set mortars must dry for the polymers to coalesce and form a hard . Schluter approves their waterproof Kerdi membrane over drywall. It installs with screws, then you tape the joints & screw holes and install your tile. There is a product called Kerdiboard you might want to look into. If cement board had been used, most likely the damage would have been much less that what I have to deal with now. Actually if you watch any pros work (not on crappy shows) on TV you will see them use backer board 99% of the time. Another advantage is that the polyisocyanurate core of foam boards is waterproof. More waste, yes, but I think you have to have a LOT of practice to hang those huge sheets like mongo does. You probably have to go to a big box store's special order desk or find a specialty tile supplier to find it. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. Most cement-based thin-set mortars are suitable; however, it is important to check the manufacturers instructions to ensure that the product is approved for use with Schluter systems. Blocking should be constant across this area when openings are larger than your fist. Will use the Schluter Shower system. And second, since it's foam, the board is super easy to cut with just a utility knife. When applying thin-set mortar, the manufacturers instructions should be followed closely. First, you would waterproof with your favorite liquid waterproofing membrane of . Can you remove tile from Kerdi membrane? Been clankin' away at this computer for a couple of hours now, guys. GoBoard is a kind of backer board because the main elements of a backer board are cement, silica, fiberglass, etc. You are wise to use a cement board. 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. Yes, KERDI membrane will stick to cement board. The cement board can also become weakened and start to flake away when it absorbs moisture, causing ugly spots and patches to start appearing on the wall. This will help you achieve the best results and ensure the longevity of your project. However if installed on drywall it is only protecting one side. 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. We want that inside corner able to move. How should I transition between cement board floor and alcove tub? Ideally the DalSeal TS would fold into the gap between the wall and ceiling concrete board. This allows the cement to properly hydrate, resulting in To ensure the floor is clean, wipe it with a wet sponge. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. There is definitely skill & planning required to doit right. vegan) just to try it, does this inconvenience the caterers and staff? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. 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. Start by cleaning the cement board with a mineral oil soap; this will help reduce mold and mildew growth throughout the life of the shower. Hi.I have a unique situation. 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. I guess I could save a few $ and laminate 1/4" drywall there instead.IOW, is hardi OK to level out the tub flange?Not that it matters, but the tile will be 3x6 carrara to the ceiling.Casey. I imagine we could share some good stories. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. Schulter Ditra is manufactured by Schluter Systems and is a 1/8 thick polyethylene uncoupling membrane that is specifically designed for tile installations. Kerdi-Shower-T/-TS/-TT is a prefabricated sloped shower tray with integrated Kerdi waterproofing. builder, anti-builder, rebuilder -- Retired Moderator. You absolutely need to include some sort of substrate (cement board, green board, regular drywall) with the Schluter-Kerdi waterproofing kit. Kerdi membrane prevents water damage and mold development. We were using a 3/16 x 5/32 trowel, probably to small. How do I align things in the following tabular environment? Will use the Schluter Shower system. This will help protect the cement board from water damage, and is often a specific type of coating designed for use with cement boards. The major drawback to cement boards is their weight, as they are incredibly heavy and can be difficult to cut. The Kerdi/Daltile TS underlayments do have some valid applications such as in steam shower installations where a bullet proof vapor barrier is required. 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. Sledge hammers for the floor, that might take a bit of time. 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 you can paint a wall, you can use RedGard. #1 - Backer board has nothing to do with HD or any other big box. How do you show the depth of a hole in a drawing? The niche' intermediate shelf isn't actually attached, to enable specific placement for each unique tiling application. 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. Once you have determined the type of thinset, its important to also consider the weather conditions during installation. To create a watertight shower assembly, we installed Schluter's Kerdi membrane over the drywall, just as we would for tile.Write by:. If you want a cement board, use Durock or Wonderboard. Finally, it is important to remember that any thin-set that has been exposed to moisture must be replaced. Furthermore, if you're working in an older home KERDI-BOARD fits better than cement board in odd spaces.