Here are the fundamentals of tile installation over cement board. However, if installed on drywall, it only protects one side. The 1/4-inch-thick board is typically used on floors and countertops. x 96 in. Manufactured by Schluter Systems, Kerdi Board is a multifunctional tile underlayment and construction panel, that can also be implemented for forming bonded waterproof assemblies with tile coverings. Sledge hammers for the floor, that might take a bit of time. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. x 48 in. If you choose to use Aquadefense as a shower pan liner, be sure to continue it up the walls at least 6", tying into your waterproofing on the walls. 173 upvotes. #3 This is a DIY site. We also found that using a heavy rolling pin worked wonders for really setting the Kerdi. 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 have to redo my tub surround due to moisture leaks and failing grout. 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. However if installed on drywall it is only protecting one side. So long as the seams and joint areas are properly prepared, the panels can also provide waterproofing. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. KERDI was developed as a waterproofing membrane to be used in . Will add it in. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. Everyone knows brick and stucco, but what about fiber cement and metal? I'm thirsty. #2 - Your suggestion has plenty of merit though. 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. Unlike cement boards, you can bend this material without it breaking. Why do small African island nations perform better than African continental nations, considering democracy and human development? Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. 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. There is a product called Kerdiboard you might want to look into. Putting this stuff on walls is difficult and time . The cement board core itself is not waterproof, but it can withstand water without falling apart. Applying a conventional cement backer board to such a structure is almost impossible. 4. is the contractor creating a waterproof schluter-kerdi shower? 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. . Connect and share knowledge within a single location that is structured and easy to search. Foam-core tile backing board has two big advantages over other backer boards. 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 is known to be very heavy and somewhat difficult to cut. You are wise to use a cement board. Not even the plumber's fault as it was just a bad valve. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. I still wet the walls first. Cement board is a heavy mess compared to drywall, and drywall is a heavy mess compared to Kerdi Board. First Kerdi can be installed on drywall or cement board. We like that the Kerdi membrane material installs easily over almost any substrate, including standard wallboard. One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. I will say that to is easier to put the membrane over drywall than cement board. Building Panel: Price $ 119 00 $ 202 06 $ 279 00. see Prop 65 WARNINGS. Contact us: 888-472-4588 However if installed on drywall it is only protecting one side. 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. 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. 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. PROBLEM SOLVED for Tub Flange when Installing Cement Board and Tile. Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. When installed, Kerdi Board creates a substrate that is level, flat, square, plumb, and dimensionally stable. What are the differences between "paperless drywall" and "cement board"? Press the Kerdi Membrane into the Thinset Mortar with firm, even pressure to achieve full mortar coverage. The niche' intermediate shelf isn't actually attached, to enable specific placement for each unique tiling application. 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. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Go with smaller bags or only mix half. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. When applying thin-set mortar, the manufacturers instructions should be followed closely. But you might be struggling to figure out what kind of paint to use on garage walls. Find the website that's made specifically for you. Like cement board, the boards are heavy and hard to cut. The drywall's back side fails, and it's just as bad or worse than it was on the tile side. I ended up putting up a thin, skim-coat of thinset all over the hardi board, letting it dry, and then putting up the kerdi. I'm guessing he put a 2x6 across for the curb? LONDON. I simply sponge off the excess. DensShield is one common brand. ! Kerdi can even be installed over drywall. Additionally, all thin-set mortars should be suitable for use in wet or feature depths of up to 1/8 inch. Kerdi really offers very little advantage over hardiboard plus membrane. Connect and share knowledge within a single location that is structured and easy to search. Yes, it is possible to put Kerdi over regular drywall. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin? Then cement, sand and water are mixed together to a crumbly consistency and floated over the lath to form a flat surface. 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. When doing so, it is important to ensure that the drywall surface is clean and free of dust, grease, and loose paint. Additionally, seal the space around any pipes and fixtures that can be found in the shower. 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? And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! Learn more about Stack Overflow the company, and our products. Additionally, you can use KERDI-BAND around corners, seams, and joints to help with a waterproof installation. This will help you achieve the best results and ensure the longevity of your project. Cement board comes both in 1/4-inch-thick and 1/2-inch-thick versions. 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? The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. Once its applied, the last step is to follow up the waterproof coating with a waterproof sealant. Additionally, all thin-set should be allowed to cure for 24 hours before tiles are installed. link to How To Organize A Bathroom Closet. 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. 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). I usually use Durock. Yeah it seems that the only products that will be compatible with cement board and the kerdi membrane are bostik ditra-set and schluter all-set (or one of schluters other products). This makes Kerdi Board suitable for a wide variety of interior applications, including kitchen countertops. If you preorder a special airline meal (e.g. After roughly two days I would fill the corner with silicone. Once all areas have been properly waterproofed, the walls can be tiled and grouted to create a waterproof surface. A 1/2-inch thick, 3 x 5 foot sheet weighs just 7-1/2 pounds, compared with 45 pounds for a similar size sheet of cement board. If you do not already have the hardi up, I recommend using real cement board (Hardi is a fiber-cement) or drywall. This allows the cement to properly hydrate, resulting in To ensure the floor is clean, wipe it with a wet sponge. It only takes a minute to sign up. One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. Plus, if you use the mold and moisture resistant drywall, it will be extra insurance against mold.
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