Why is this the case? Installation. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? The foam core surrounded by synthetic cloth on both sides and adhered with resin glue is. Waterproofing is an important aspect of any bathroom or wet-area installation. Can I put Kerdi board over drywall? The cement board core itself is not waterproof, but it can withstand water without falling apart. This makes Kerdi Board suitable for a wide variety of interior applications, including kitchen countertops. Once its applied, the last step is to follow up the waterproof coating with a waterproof sealant. I have corrugated metal shower surround & grab bars. To line niche shelves, for instance. I hang Kerdi on cement board and fibercement board all the time. Will use the Schluter Shower system. Thanks to Mongo's earlier post, we knew we'd have to spritz the Hardi -- but found that even that wasn't quite enough. Kerdi Membrane Installation (Step-by-Step Installation Guide) If so, that means breaking up the floor pan. 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. Whether youre installing tile on a floor, wall, or countertop, choosing the right type of substrate, or underlayment, is critical to preventing breaks and cracks in both the tile and the grout. We ended up sponging the Hardi and wetting and booking the Kerdi (a la wallpaper), and that made the installation go much smoother. A successful tile installation largely depends on the substrate that the tile is attached to. Do You Need Uncoupling Membrane Over Concrete? - On Secret Hunt Ideally the DalSeal TS would fold into the gap between the wall and ceiling concrete board. Contact us: 888-472-4588 One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. Kerdi Board vs. Cement Board: What Are The Major Differences? She grew up surrounded by constant home improvement projects and owes most of what she knows to helping her dad renovate her childhood home. Find the website that's made specifically for you. Do you have any pictures? Once the primer is completely dry, use a roller or brush to apply a coat of your chosen KERDI membrane adhesive over the entire surface of the wall, overlapping the edges slightly for full coverage. Can you remove tile from Kerdi membrane? x 5-ft. and 3 x 5-ft. sheets of cement board are sized for efficient use around bathtubs and showers. An additional layer of sealant can also be applied on the seams for extra protection and water resistance. My floor tiles are 2" x 2"." - Lisa Jasper No - you can not use Kerdi Board on the floor. Can I install Kerdi board just on the walls of my shower and use a PVC membrane on the floor? 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. 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. Installing cement board involves placing the boards atop a layer of thinset adhesive, a process known as bedding. Portland cement-based unmodified thin-set mortars are dependent on the presence of moisture for hydration in order to gain strength. Look at it this way; Withe Kerdi, you either trust it or you don't. Its important to note that Kerdi membrane is not a structural base layer, so plywood should be installed and reinforced as necessary based on load requirements. Liquid membrane over cement board | Terry Love Plumbing Advice What is the proper substrate to use on tiled wall? Your Get free, zero-commitment quotes from pro contractors near you. Making statements based on opinion; back them up with references or personal experience. I also used a larger sized trowel than the one recommend by Schluter. Backerboard plus a waterproofing membrane like Redgard is all that is needed for tub surrounds with thinset then tile. It worked well - just like wallpapering. Plus, if you use the mold and moisture resistant drywall, it will be extra insurance against mold. When applying thin-set mortar, the manufacturers instructions should be followed closely. It's not a matter of trusting the Kerdi. 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.' 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. The gridlines printed on the surface are beneficial for the installation process, also allowing for quick, neat cuts with a utility knife. When installed, Kerdi Board creates a substrate that is level, flat, square, plumb, and dimensionally stable. Regardless, cement board is a great, trusted tile substrate that will work well on both walls and floors. Ready to join the 100,000+ homeowners matched with pros? It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. 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. Why you use cement board? 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. 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. This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. 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. Unlike cement boards, you can bend this material without it breaking. 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. That would tell him where the edge of the framing needs to be. Ceramic and porcelain tile, more than almost any other surface material, need a stable . Additionally, seal the space around any pipes and fixtures that can be found in the shower. 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. 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. Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving independently? This liquid waterproofing solution does more than keep water away, it also promotes tile adhesion and prevents cracking. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. This creates a strong, waterproof tile backer that also functions as an uncoupling membrane. Actually if you watch any pros work (not on crappy shows) on TV you will see them use backer board 99% of the time. I would fear leaks in all corners of this shower. What's the difference between a power rail and a signal line? A hundred times better to have too much before you comb than too little. Cross your fingers and hope it's all OK. Not the best Kerdi Showcase. Hello D Zak! Step 7: Cut the Tile. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. In my. You are wise to use a cement board. In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. 173 upvotes. You still use metal lath, but then mix bags of powder and pour the soupy mix onto the floor. Foam-core tile backing board has two big advantages over other backer boards. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. Using Kerdi Schlueter membrane with cement board. - Houzz Can Kerdi membrane be installed over painted drywall? Cementboard sufficient to a tub surround is dirt cheap .vs. However, if installed on drywall, it only protects one side. Now there's nothing particularly wrong with fiber-cementit's just not my first choice. @DMoore- OK, I agree that with redguard it would be redundant. I want to mount a cast iron bathtub, but not pull down my 1905 plaster and lath. Builder saying he doesn't want to put my trim tile in here. About an argument in Famine, Affluence and Morality, Acidity of alcohols and basicity of amines. We like that the Kerdi membrane material installs easily over almost any substrate, including standard wallboard. While cement board and grout are not waterproof, Kerdi is and can even be directly installed over drywall. If you want a cement board, use Durock or Wonderboard. 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. Kerdi really offers very little advantage over hardiboard plus membrane. Sealing the tub flange for tile: 3 methods - DIYTileGuy modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. 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. Modified vs. Unmodified Mortar With Kerdi Membranes #4 You could be adding a good 1000 pounds to your install too. Redgard is a similar product. Moisture resistant can cause similar problems, and there is absolutely no advantage to it. Let's start! 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. 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. 120 sq feet including the floor. Step 8: Allow to dry. I also used the Kerdi drain. builder, anti-builder, rebuilder -- Retired Moderator. Kerdi vs Redguard cost breakdown. : r/HomeImprovement - reddit Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. Kerdi membrane can be used on cement board, drywall, and, as you may have guessed- greenboard. Probably the simplest way is to caulk the gap with 100% silicone or a urethane sealant. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. DIYers on this forum seem to have nothing but problems with Hardi. Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . The main types of cement board you could encounter are Fibre Reinforced Cement (FRC) board and gypsum board. 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. Using Kolmogorov complexity to measure difficulty of problems? 1. Yes, it is possible to put Kerdi over regular drywall. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? It allows you to easily and quickly create tile-ready elements in bathtub surrounds and platforms, vanities, showers, shelving, and much more. The use of modified thinset adhesive could result in an inadequate bond and could lead to possible delamination. A good rule of thumb is 24 hours per inch of thickness, then one more day on top of that to be sure. It doesn't matter but you absolutely need to use both a substrate and a waterproofing membrane. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. It's a lightweight polystyrene board faced with Kerdi that comes in various thicknesses that you can use in place of drywall or cement board. Sheets of glass mat gypsum are made from water-resistant silicone-treated gypsum, reinforced on both sides by fiberglass mats. Asking for help, clarification, or responding to other answers. The difference between the phonemes /p/ and /b/ in Japanese. 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. Hardie board is a cement-based siding product that is water-resistant, but not waterproof. But that doesn't address your question, so it's just a comment, not an answer as such. Can you put Kerdi over cement board? - TipsFolder.com After installing your mud bed, make sure it is fully cured before applying Aquadefense. Properly waterproofed Hardie board should last for many years. After priming, use an approved adhesive to adhere the KERDI membrane to the drywall, making sure the edges are well sealed and joints are tight.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[468,60],'remodelormove_com-medrectangle-4','ezslot_12',156,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-medrectangle-4-0'); A successful installation of KERDI requires well-prepared surfaces and a proper application, so take the time to properly prime the drywall before installation. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! This will help to extend its lifespan and make sure it looks its best for years to come. I think I'll try using the thinned mixture of Redgard and then try the Kerdi membrane again. They are absorbed into the surface material and help keep moisture away from the substrate surface. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? . 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. It is also widely available and a relatively inexpensive option approximately $10 for a 3-foot by 5-foot sheet. It looks like you have Kerdi installed on the floor and not Kerdi Board. In . Cement board comes both in 1/4-inch-thick and 1/2-inch-thick versions. Best substrate for kerdi membrane - nsbu.treviso-aug.it The taping knife at a low angle makes an enormous difference, and I'm very grateful for that hint. 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. To create a watertight shower assembly, we installed Schluter's Kerdi membrane over the drywall, just as we would for tile.Write by:. Run a damp towel over the cement board surface to dust . 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. And we are using a drippy mixture, it slides off the trowel. if you go with vapour barrier, then cement board. Please feel free to reach out to our Product Support Team at 1-800-992-6273 if you need anything. Can you put KERDI over regular drywall? - remodelormove.com Fiber cement board is available in 1/4-inch and 1/2-inch thicknesses. Will be replacing tub shower combination with tiled shower in my home. They can be installed on any type of support and can even be used to create partitions, with no structural support required. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Is a PhD visitor considered as a visiting scholar? You provide the pitch during the tile set. To properly seal a cement board for a shower, its important to first properly prepare the surface. Project Type: Tile / Category: Bathroom. Wedi Board vs Cement Board vs Kerdi Board - The Ultimate Home Living Blog To learn more, see our tips on writing great answers. If a pipe or faucet ever leaks in the wall this will ruin your shower. Plus, most self-leveling formulas harden very fast, so you have to plan carefully so you can mix and pour quickly. Allow the primer to dry completely before proceeding with the KERDI installation. How "tidy" does the kerdi band need to be? The surface of Wedi is perfect for bonding. Kerdi membrane is a waterproofing material that is designed to be used in wet areas such as bathrooms and showers before tiles are installed. This is a very effective and popular method of installing tile, and one that ensures the tile doesnt crack. Cement board is the most common and widely-known backer board. The bag says Mapei floortile mortar, it was the only unmodified thinset at our hardware store. Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? 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. Hi.I have a unique situation. link to What Kind Of Paint For Garage Walls? Just wondering how effective is the tile on kerdi membrane vs the traditional cement backboard where tiles are glued directly to the drywall? I trust it and have never had a callback. The Pros and Cons of Various Tile Backers | Family Handyman 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? 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. Once all areas have been properly waterproofed, the walls can be tiled and grouted to create a waterproof surface. 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. 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. 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. Can You Put RedGard On HardieBacker Board? - Next Modern Home When I do another shower I'll use real cement board, not Hardi-board. Hardibacker is a VERY "thirsty" material that sucks the moisture out of the mortar VERY quickly and I don't like it. The thickness of the tile is important, and should be known, but not because it changes the method of building. Not everyone knows how to do mud and lathe it's so old school plus it wears you out, ive been a setter for 27 yrs and I have yet to go back to one of my showers I installed using perma base or durock, with a liner, i have started using waterproofing such as redguard or aqua-defense.
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