. The core isnt waterproof, but it can withstand getting wet without falling apart, so even if your waterproofing system leaks, the board will stay intact. This will ensure that the coating sticks to the cement board. A place where magic is studied and practiced? Ready to join the 100,000+ homeowners matched with pros? 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. Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. ps, now that you don't need it anymore you can throw that useless cheap piece of crap magnesium float my way. Kerdi Board vs. Cement Board. rev2023.3.3.43278. Thanks to Mongo's earlier post, we knew we'd have to spritz the Hardi -- but found that even that wasn't quite enough. I think I'll try using the thinned mixture of Redgard and then try the Kerdi membrane again. It is designed to form a waterproof layer between cement board and tiles, helping create a watertight installation. Cement board is the industry standard when it comes to tile substrates and the most preferred among professionals when installing porcelain or ceramic tile. Step 4: Place the Tile. Well, DH said he had virtually no time to work with the stuff before it dried out, so he switched from my spritz bottle to a sponge. I have used kerdi, and I have applied it over cement board. But there are downsides. Bathroom closets are often catch-alls for anything and everything remotely related to self-care. All shower/tub areas should have concrete board (I prefer hardiboard). On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. For indoor projects and gypsum board, thinset with a latex acrylic modifier is ideal. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. 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. It is also widely available and a relatively inexpensive option approximately $10 for a 3-foot by 5-foot sheet. As a contractor, I have been using Kerdi since it came out. 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? Cross your fingers and hope it's all OK. Not the best Kerdi Showcase. Hello D Zak! 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. Cement board (cbu) is not waterproof, but is not damaged by being wet. 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 perfect fold is tricky and many of my first steam showers where built without the sealed slip joint. We don't expect people to master this and in fact I know maybe two guys in my area (live in big city) that could do this. New England. Installation. This will help to ensure that all drywall is completely covered. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Self-leveling underlayment has many of the same advantages as a dry-pack mortar bed but doesnt require as much skill to install. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. builder, anti-builder, rebuilder -- Retired Moderator. We want that inside corner able to move. Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving independently? To line niche shelves, for instance. 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. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? You provide the pitch during the tile set. How do I align things in the following tabular environment? With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! The 1/4-inch-thick board is typically used on floors and countertops. Schluter Kerdi-Shower-T/-TS/-TT 48 in. Just wondering how effective is the tile on kerdi membrane vs the traditional cement backboard where tiles are glued directly to the drywall? Its essential to protect surrounding wall and floor surfaces from water or moisture damage that can occur in these areas. 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. Cement board is a good, reliable backer board that works well on both floors and walls. Why do small African island nations perform better than African continental nations, considering democracy and human development? What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19? Your air bubbles will travel along the valleys you've made, and it's way better if you only have to move them 20 inches to the nearest edge rather than all the way from the ceiling to the floor [Again, Mongo can, but he has mad skills].-Not paying attention to the principle of bedding top down, center out. Using modified thinset on KERDI can be tricky and in some cases, it can cause issues. I want to mount a cast iron bathtub, but not pull down my 1905 plaster and lath. x 96 in. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. 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. If youre not careful, the boards can also leave behind abrasive sandy crumbs that can cause damage to your shower base or tub. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. No, you do not need to install a vapor barrier, as Kerdi Board is the vapor barrier. 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. Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. 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. Foam-core tile backing board has two big advantages over other backer boards. Yes, KERDI membrane will stick to cement board. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. Kerdi Board is expensive, but I can justify it because it saves time, and it's a joy to use. If cement board had been used, most likely the damage would have been much less that what I have to deal with now. 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). Once youre sure that the membrane is completely dry, you can then move forward with tiling. Yes. We like that the Kerdi membrane material installs easily over almost any substrate, including standard wallboard. We recommend our users to update the browser. 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. Please feel free to reach out to our Product Support Team at 1-800-992-6273 if you need anything. Since KERDI is impervious, it does not deprive the mortar of its moisture. The kerdi membrane will probably do the same, and its regularly installed over drywall which is probably less stable. As such, many homeowners and professionals find themselves wondering whether Kerdi Board or cement board is the better tile substrate. 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 . Kerdi 3 ft. 3 in. Allow the adhesive to cure for the amount of time recommended by the adhesives manufacturer. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. And we are using a drippy mixture, it slides off the trowel. I always install it over cement board or backerboard, never over drywall, even blueboard or the mold resistant greenboard. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin? Waterproofing is an important aspect of any bathroom or wet-area installation. Sledge hammers for the floor, that might take a bit of time. Both may be effective substrates, but Kerdi Board boasts significant advantages. Slap it up comb it out, leave every ridge tall and perfect. Applying a conventional cement backer board to such a structure is almost impossible. 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. Kerdi is also used as shower lining, as required in IRC Section P2709.2 and IPC Section 417.5.2, over concrete, mortar, tile backerboard, expanded polystyrene foam board, prefabricated polystyrene shower trays, curb and ramp, gypsum board and masonry substrates." So, you can choose what board you want in your shower when using Kerdi. Can I install Kerdi board just on the walls of my shower and use a PVC membrane on the floor? The gridlines printed on the surface are beneficial for the installation process, also allowing for quick, neat cuts with a utility knife. Ideally the DalSeal TS would fold into the gap between the wall and ceiling concrete board. Jessica considers herself a home improvement and design enthusiast. How to adhere edge of bullnose tile to drywall as trim for shower/tub surround. Cementboard sufficient to a tub surround is dirt cheap .vs. Bulk update symbol size units from mm to map units in rule-based symbology. Thanks. By: Author Olin Wade (Remodel or Move Stuff). A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. 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. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. But you might be struggling to figure out what kind of paint to use on garage walls. If you do not already have the hardi up, I recommend using real cement board (Hardi is a fiber-cement) or drywall. If you can paint a wall, you can use RedGard. 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. All it takes is the right preparation. Mike Holmes uses backer on his show. 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. I'm thirsty. x 33 ft. Waterproofing Membrane: Kerdi-Board 1/2 in. Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. Shouldn't take too long, maybe an hour or so. The thin-set mortar should be mixed to a fairly dry consistency and then spread on the surface with a 1/4 inch square notch trowel. Hardie board is a cement-based siding product that is water-resistant, but not waterproof. We mixed the thinset, it wasn't as smooth as the utube video, but it was close, and we gave it ten minutes. 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. Kerdi board, on the other hand, is an extruded polystyrene foam panel. Why is there a voltage on my HDMI and coaxial cables? Additionally, all thin-set mortars should be suitable for use in wet or feature depths of up to 1/8 inch. 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.' 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. It worked well - just like wallpapering. First, felt paper is stapled to the floor and covered with expanded metal lath. ", Signed,Never Hung Kerdi A Day In Her Life. Recovering from a blunder I made while emailing a professor, Minimising the environmental effects of my dyson brain. To properly seal a cement board for a shower, its important to first properly prepare the surface. Why you use cement board? The niche' intermediate shelf isn't actually attached, to enable specific placement for each unique tiling application. 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. 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. Important to overlap seams in a shingle method. 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. DIYers on this forum seem to have nothing but problems with Hardi. #3 This is a DIY site. For the floor I make a dry mix mud base and then the Kerdi membrane. Let's start! Is it ok to fasten a shower surround to Schluter Kerdi curb? There are numerous ways to do this. Additionally, the drywall should be primed with a latex primer before applying the Kerdi membrane. 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. Here are the fundamentals of tile installation over cement board. The cement board core itself is not waterproof, but it can withstand water without falling apart. This allows the cement to properly hydrate, resulting in To ensure the floor is clean, wipe it with a wet sponge. Anytime Mongo. If you want a cement board, use Durock or Wonderboard. 1. I just a few weeks ago put kerdi on top of hardi-board in my shower and it was PAINFUL! Making statements based on opinion; back them up with references or personal experience. is the contractor creating a waterproof schluter-kerdi shower? Is this overkill? 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. A good rule of thumb is 24 hours per inch of thickness, then one more day on top of that to be sure. Hardie board is thirsty, but that's way too fast. Cement board comes both in 1/4-inch-thick and 1/2-inch-thick versions. Will add it in. tripadvisor car rental tampa airport xnxx big tits; roommate questionnaire google form shadow of the dragon queen deluxe; cities where home prices are rising 2022 beachbody bodi block; mahogany tree seeds uses Maybe try another brand of thinset? 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. When screwed to the framing, thin strips of cement board fracture more easily than thin strips of fiber-cement. . Are there tables of wastage rates for different fruit and veg? 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. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. 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. And by 'booking the Kerdi' I mean we put it in the bathtub, sprayed it with the handshower, then booked it (just like wallpaper). Probably the simplest way is to caulk the gap with 100% silicone or a urethane sealant. Why is this the case? Tile Shower SurroundCement Backerboard Location? It only takes a minute to sign up. 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. While cement board and grout are not waterproof, Kerdi is and can even be directly installed over drywall. Politique d'Utilisation des Cookies de Houzz. Putting this stuff on walls is difficult and time . All shower/tub areas should have concrete board (I prefer hardiboard). Then you can apply a thin layer of KERDI-FIX to the board, the membrane over top . Asking for help, clarification, or responding to other answers. Without an underlayment, even the slightest movement of the subfloor can result in cracking of the tile and crumbling of the grout lines. I would fear leaks in all corners of this shower. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Set ceramic and stone tile over the KERDI membrane with unmodified thin-set mortar, including large format tiles. 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. Can I put Kerdi board over drywall? 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 have to redo my tub surround due to moisture leaks and failing grout. No bulges either, but definetly no thin spots.-Not paying attention to the direction of the comb. The great thing about Kerdi Board is that it is lightweight and easier to maneuver. Do you have any pictures? It fell right off? 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. Fiber cement board is available in 1/4-inch and 1/2-inch thicknesses. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. The boards come in three-foot by five-foot and four-foot by eight-foot panels, sized for efficient use in bathrooms. This is a very effective and popular method of installing tile, and one that ensures the tile doesnt crack. Run a damp towel over the cement board surface to dust . Learn about the options in exterior siding before you choose, Before you pick up a single tile, pull from these tips for expert results, Slip resistance, curves and even the mineral content of your water all affect which tile is best for your shower, We help a Houzz user ask all the right questions for designing a stylish, practical and safe shower bench, This isn't a light DIY project: You'll need heavy-duty tools and plenty of protection for your home and yourself, In steamy quarters, tile needs to stand up to all that water and vapor in style. Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. 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. However, if installed on drywall, it only protects one side. Rolling pin, good, now I can throw away my magnesium float.LOLCasey. Putting this stuff on walls is difficult and time . If you can avoid that, the demo would be ~easy enough to maybe have some friends who'd work for beer come over and help you knock it out. vegan) just to try it, does this inconvenience the caterers and staff? Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. DensShield is one common brand. Cement board is a bit better, but you need to spray either one before applying the mortar so that it doesn't "skin over" before you can get the Kerdi up. Then you can apply a thin layer of KERDI-FIX to the board, the membrane over top, and use a rolling pin to press it down and ensure a secure bond. 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. And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! Do new devs get fired if they can't solve a certain bug? This will ensure a strong bond between the KERDI membrane and the substrate. After roughly two days I would fill the corner with silicone. 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. 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. I still wet the walls first. This allows for future compression and an area at the corner where things are more forgiving. It's not a matter of trusting the Kerdi. The problem is on the back side of the drywall, which is not protected. There is definitely skill & planning required to doit right. In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. In the worst case, it's OK to cut the Kerdi, remove the damaged section, scrape up the thinset from the areas, and set a new piece of Kerdi. Blocking should be constant across this area when openings are larger than your fist. Kerdi can be installed first on drywall or cement board. Both may be effective substrates, but Kerdi Board boasts significant advantages. Ceramic and porcelain tile, more than almost any other surface material, need a stable . We use a pump action garden sprayer and its usually dry by the time we clean the sprayer. I like to use a garden sprayer to keep the thirsty Kerdi wet. Needless to say, the drywall turned to mush. @JimmyFix-it - hardiboard is not really porous unless it is completely saturated. When screwed to the framing, thin strips of cement board fracture more easily than thin strips of fiber-cement. 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. First, its super lightweight compared with the rest. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. Schluter approves their waterproof Kerdi membrane over drywall. Too little, and the kerdi will never show you gray, no matter how you sweat. It could take longer if the space is particularly wet or humid.



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