@JimmyFix-it - You are right. 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? 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. Just wondering how effective is the tile on kerdi membrane vs the traditional cement backboard where tiles are glued directly to the drywall? I like to use a garden sprayer to keep the thirsty Kerdi wet. you should still water proof with a liquid membrane product like RedGuard. Though, each product comes with its own individual characteristics, and pros and cons. Ultimately, the decision between a Schlter system or a cement board comes down to the particular application and the goals the user has for the floor 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. Regardless, cement board is a great, trusted tile substrate that will work well on both walls and floors. Hi.I have a unique situation. 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). Various products can be used to waterproof shower walls such as water-resistant drywall and cement backer boards. Yup! 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 . On top of that, fiber cement board is even more brittle than standard cement board, so you have to be extra careful to keep screws at least an inch from the edge to avoid breaking the board. Cement board (cbu) is not waterproof, but is not damaged by being wet. Properly waterproofing a shower area sharing a living room wall, Can I use cement accelerator to decrease setup time of modified thinset. Contact us: 888-472-4588 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. But a mortar bed does have advantages. You're correct if you use the shluter kerdi membrane you do not use a vapour barrier since it creates a sandwhich effect that doesn't allow the substrate . Other mistakes I was making early on:-over working the thinset. All shower/tub areas should have concrete board (I prefer hardiboard). I have corrugated metal shower surround & grab bars. The grid lines on the surface are incredibly helpful for installation and making neat cuts. There are numerous ways to do this. However, if installed on drywall, it only protects one side. Then cement, sand and water are mixed together to a crumbly consistency and floated over the lath to form a flat surface. I would fear leaks in all corners of this shower. Connect and share knowledge within a single location that is structured and easy to search. The problem is on the back side of the drywall, which is not protected. Personnaliser mon exprience l'aide de cookies, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, epoxy or marine paint over greenboard for my shower walls (not tile), Need advice on bathroom remodel - using hardiebacker boards, HELP! LONDON. To properly seal a cement board for a shower, its important to first properly prepare the surface. If he did the framing for the shower, then in order to measure for it correctly, he would need to know how thick the tile is so that he can avoid exactly this problem. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It is a topical waterproofing layer that is put over the substrate to keep water from getting to the wood frame and nails. I simply sponge off the excess. I think I'll try using the thinned mixture of Redgard and then try the Kerdi membrane again. 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. Can I put Kerdi board over drywall? 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? To create a watertight shower assembly, we installed Schluter's Kerdi membrane over the drywall, just as we would for tile.Write by:. When it comes to tile underlayment, your options can be categorized into three main classifications, each suitable for different tiling circumstances: Although cement board is the most commonly used underlayment for tile, Kerdi board is growing in popularity as a multifunctional tile substrate. By: Author Olin Wade (Remodel or Move Stuff). Tile can be installed directly over Kerdi-Board using the thinset method; For use with ceramic and natural stone tile; Return Policy; California residents. Ready to join the 100,000+ homeowners matched with pros? How did this project turn out? What was the indicator that let you know that spritzing was not enough, and that you needed to 'sponge' the Hardi? It is also widely available and a relatively inexpensive option approximately $10 for a 3-foot by 5-foot sheet. To prevent those movements from transferring to the tile floor, consider installing an uncoupling membrane between the concrete and tile surfaces. Gettin' a little delirious. It could take longer if the space is particularly wet or humid. Let the mortar dry for 24 hours then test the shower. You can apply it on PVC, metal, slabs, walls, and floors. Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers). The waterproof membrane isn't a substitute for the substrate. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. Step 2: Determine the room's center. 3. When it comes to selecting thinset for cement board, there are a few important factors to consider. Kerdi Board vs. Cement Board. 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 it comes to applying KERDI, however, it is advised to use a regular thinset that includes portland cement as its main component. When applying thin-set mortar, the manufacturers instructions should be followed closely. To waterproof Hardie board, you should choose a quality sealer that is designed for use on cement-based sidings. Its essential to protect surrounding wall and floor surfaces from water or moisture damage that can occur in these areas. It only takes a minute to sign up. If you are laying tile on floors that are wavy or out of level, self-leveling underlayment is a great solution. Furthermore, if you're working in an older home KERDI-BOARD fits better than cement board in odd spaces. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. Yes, you should prime drywall before installing KERDI in order to ensure proper adhesion and a successful installation. This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. The thickness of the tile is important, and should be known, but not because it changes the method of building. Any recommendations? Make sure to use multiple coats, if necessary. This will help to extend its lifespan and make sure it looks its best for years to come. Kerdi board, on the other hand, is an extruded polystyrene foam panel. 120 sq feet including the floor. This product is available in 3/16", 3/8", 1/2", 5/8" 3/4", 1" 1-1/2" and 2" thicknesses, allowing for a wide variety of installation options. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'remodelormove_com-mobile-leaderboard-2','ezslot_25',167,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-mobile-leaderboard-2-0');Waterproofing should be done prior to the installation of any tile including behind the shower tile. Ratings (91) (5) (91) (3 . Bathroom closets are often catch-alls for anything and everything remotely related to self-care. Hi David. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. So long as the seams and joint areas are properly prepared, the panels can also provide waterproofing. Why does the plumbing rough need to be moved? Why is this the case? Good luck with your project. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. Go with smaller bags or only mix half. We tried adding water to the thinset, we tried using a larger notch trowel, but nothing seems to make the Kerdi stick. After today's tutorial, you'll gain the confidence to transform your old bathroom into a new space. It fell right off? If there is no blocking behind the seam, i would just tape prior to installing the membrane, the thinset will fill the seam and embed the mesh. As far as the tile/prep work, you are right that he is shifting the blame. It is designed to form a waterproof layer between cement board and tiles, helping create a watertight installation. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. Schluter approves their waterproof Kerdi membrane over drywall. The cement board needs to be clean, free of debris, and dry. This will ensure a strong bond between the KERDI membrane and the substrate. #2 - Your suggestion has plenty of merit though. The 1/4-inch-thick board is typically used on floors and countertops. First, you would waterproof with your favorite liquid waterproofing membrane of . But that doesn't address your question, so it's just a comment, not an answer as such. there should be a small gap between the backer board and the tub. It is a pliable waterproofing membrane that also doubles as a vapor retarder. Ditra is a 1/8-inch thick polyethylene membrane with a layer of anchoring fleece on the underside and a grid of square cavities on top. The completed assembly takes the place of more traditional backer board when installed over 3/4-inch wood subfloors. 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 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. We mixed the thinset, it wasn't as smooth as the utube video, but it was close, and we gave it ten minutes. If any is found, wait a few more hours and then re-inspect. It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. Install an Uncoupling Membrane Between Concrete and Tile. Yes, Schluter membranes can go over cement board. Making statements based on opinion; back them up with references or personal experience. Needed to interject a little "amateur humor. When installed, Kerdi Board creates a substrate that is level, flat, square, plumb, and dimensionally stable. Cementboard sufficient to a tub surround is dirt cheap .vs. #1 - Backer board has nothing to do with HD or any other big box. Waterproof showers are the trend today, so RedGard is an excellent alternative to cement boards that act as vapor barriers. 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. We just went through a learning curve on the Kerdi and Hardi. The perfect fold is tricky and many of my first steam showers where built without the sealed slip joint. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I have watched it done 10-15 times, have good skills, and if I tried to make large mortar walls myself it might like a little kid threw up concrete Should I use Kerdi membrane or cement backerboard? Wedi showers feature a pre-sloped base that is already installed. see Prop 65 WARNINGS. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. Modified thin-set mortars must dry for the polymers to coalesce and form a hard . . Kerdi's systems are fairly reputable. 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. 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. It may take more than 1 beer:). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. The Kerdi is essentially replacing the backerboard. On a vertical surface, very little moisture . With cement board as a substrate, the key is to ensure proper installation of the membrane. However if installed on drywall it is only protecting one side. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. 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? 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. What precautions should I take installing tile on a backerboard in an area surrounded by cement? MAPEI makes products for each step of the remodel process, giving you a single source solution, and only one phone number to call if you need assistance! Fiber cement board is a variation of cement board that is made from compressed cement and sand and reinforced with wood fibers throughout. RedGard On Hardibacker Board. They are absorbed into the surface material and help keep moisture away from the substrate surface. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. With that said, the key benefits of Kerdi Board include: While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. For the floor I make a dry mix mud base and then the Kerdi membrane. Spacers are the next step. Sledge hammers for the floor, that might take a bit of time. As such, many homeowners and professionals find themselves wondering whether Kerdi Board or cement board is the better tile substrate. 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. You'll know the RG is dry when it turns reallllly dark bright red as opposed to the pinkish color when applied. 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. x 96 in. I still wet the walls first. Kerdi Board is suitable for a number of interior applications. If you preorder a special airline meal (e.g. Foam-core tile backing board has two big advantages over other backer boards. This creates a strong, waterproof tile backer that also functions as an uncoupling membrane. 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. . Here are the fundamentals of tile installation over cement board. Waterproofing is an important aspect of any bathroom or wet-area installation. 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. 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. Step 3: Apply Thinset. It allows you to easily and quickly create tile-ready elements in bathtub surrounds and platforms, vanities, showers, shelving, and much more.
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