Then cement, sand and water are mixed together to a crumbly consistency and floated over the lath to form a flat surface. Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. 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. Finally, it is important to remember that any thin-set that has been exposed to moisture must be replaced. When applying the primer, make sure to cover all surfaces thoroughly, as these will be completely covered by the KERDI membrane. Bathroom closets are often catch-alls for anything and everything remotely related to self-care. Press the Kerdi Membrane into the Thinset Mortar with firm, even pressure to achieve full mortar coverage. I look at ceramic tile as a lifetime-of the house-product, so I use the best material for the job.I prefer to use cement board as the substrate with the Kerdi on top. Do you have any pictures? All it takes is the right preparation. This will ensure that the coating sticks to the cement board. Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. Cement board is known to be very heavy and somewhat difficult to cut. 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. So long as the seams and joint areas are properly prepared, the panels can also provide waterproofing. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. 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. With cement board as a substrate, the key is to ensure proper installation of the membrane. Installation; As the GoBoard is very lightweight, it becomes easy to . Let's start! A hundred times better to have too much before you comb than too little. But there are downsides. 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. Schluter Kerdi-Shower-T/-TS/-TT 48 in. Ceramic and porcelain tile, more than almost any other surface material, need a stable . It works well, is what Schluter recommends and I've never had an issue with it. Look at it this way; Withe Kerdi, you either trust it or you don't. Yes, you need waterproofing behind shower tile. How should I transition between cement board floor and alcove tub? 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. Kerdi 3 ft. 3 in. However, the answer you provided above suggests that the OP could omit a waterproof membrane, that I. That was not a fault of the Kerdi, or the installation. Thanks for contributing an answer to Home Improvement Stack Exchange! In jobsite conditions and over a long time, who knows. When I do another shower I'll use real cement board, not Hardi-board. I hang Kerdi on cement board and fibercement board all the time. 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. I barely touch it with my hands before going to the tape knife. The kerdi membrane will probably do the same, and its regularly installed over drywall which is probably less stable. Its essential to protect surrounding wall and floor surfaces from water or moisture damage that can occur in these areas. Here's how to get it right the first time, If you've got a steady hand, a few easy-to-find supplies and patience, you can install a tile backsplash in a kitchen or bathroom, Step 4 in swapping your tub for a sleek new shower: Pick your waterproofing materials and drain, and don't forget to test, Work with your contractors and installers to ensure a safe, stylish curb that keeps the water where it belongs, Get the benefits of a time-honored ritual without firing up the coals, thanks to easier-than-ever home steam systems, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Out With the Old Tile: 8 Steps to Prep for Demolition, Convert Your Tub Space Into a Shower Waterproofing and Drainage, Steam Showers Bring a Beloved Spa Feature Home. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . The Schlter system tends to be more durable than a cement board, but it also depends on the particular application and the weather. If you want to go to the extra effort of putting the membrane over drywall, there is no need to use greenboard. We tried soaking the cement board and applying the kerdi in small sections. It is also widely available and a relatively inexpensive option approximately $10 for a 3-foot by 5-foot sheet. Should I use Kerdi membrane or cement backerboard? I imagine we could share some good stories. Anyone who has done more than 1 shower shouldn't start without knowing that. The site is called floorelf.com. I would fear leaks in all corners of this shower. I just a few weeks ago put kerdi on top of hardi-board in my shower and it was PAINFUL! Step 2: Determine the room's center. It allows you to easily and quickly create tile-ready elements in bathtub surrounds and platforms, vanities, showers, shelving, and much more. rev2023.3.3.43278. Building Panel: Price $ 119 00 $ 202 06 $ 279 00. . Recovering from a blunder I made while emailing a professor, Minimising the environmental effects of my dyson brain. Asking for help, clarification, or responding to other answers. Glass mat gypsum board is a better choice. If a pipe or faucet ever leaks in the wall this will ruin your shower. . Foam-core tile backing board has two big advantages over other backer boards. Step 1: Measure the area. 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. Why is there a voltage on my HDMI and coaxial cables? Required fields are marked *. Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. Everyone knows brick and stucco, but what about fiber cement and metal? 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. Your Get free, zero-commitment quotes from pro contractors near you. Kerdi Board is suitable for a number of interior applications. Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. Your real issues are the lack of proper corners on this shower. Thanks to all for the feedback. I simply sponge off the excess. 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. 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. Sure, you can do it.just be sure to "spritz" or wet the hardi thoroughly before.it's pretty "thirsty.". It only takes a minute to sign up. Kerdi does admit that you can use cement board. #3 This is a DIY site. The thickness of the tile is important, and should be known, but not because it changes the method of building. 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? Even the tiling subs have moved away from mortar walls because of the labor cost and lack of craftsmen in the industry. Also - use a good thinset. Kerdi can be installed first on drywall or cement board. 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. DensShield is one common brand. ", Signed,Never Hung Kerdi A Day In Her Life. No bulges either, but definetly no thin spots.-Not paying attention to the direction of the comb. 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. There are numerous ways to do this. If cement board had been used, most likely the damage would have been much less that what I have to deal with now. As a contractor, I have been using Kerdi since it came out. For indoor projects and gypsum board, thinset with a latex acrylic modifier is ideal. 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. How did this project turn out? Slap it up comb it out, leave every ridge tall and perfect. You absolutely need to include some sort of substrate (cement board, green board, regular drywall) with the Schluter-Kerdi waterproofing kit. The cement board needs to be clean, free of debris, and dry. Too little, and the kerdi will never show you gray, no matter how you sweat. When applying Kerdi membrane to cement board, the edges and seams of the membrane must be lapped, meaning that each layer should overlap the portion underneath it by a minimum of two inches. 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. Moisture resistant can cause similar problems, and there is absolutely no advantage to it. Hardie board is thirsty, but that's way too fast. Various products can be used to waterproof shower walls such as water-resistant drywall and cement backer boards. Ditra is manufactured in a 3'3 width and comes in various roll lengths (54sf, 150sf, and 323 sf). 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. Good luck with your project. You probably have to go to a big box store's special order desk or find a specialty tile supplier to find it. It is easier to cut than cement board, it is mold resistant, and it has a built-in moisture barrier. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. 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. Not even the plumber's fault as it was just a bad valve. FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. Waterproofing cement board is relatively simple and there are several different waterproofing products available. Set ceramic and stone tile over the KERDI membrane with unmodified thin-set mortar, including large format tiles. The drywall's back side fails, and it's just as bad or worse than it was on the tile side. Kerdi membrane prevents water damage and mold development.
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