Bathroom closets are often catch-alls for anything and everything remotely related to self-care. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Important to overlap seams in a shingle method. Following the instructions for the product being used and ensuring that all of the necessary steps are followed will help to ensure a successful installation. Liquid membrane over cement board | Terry Love Plumbing Advice Good luck with your project. Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? While cement board and grout are not waterproof, Kerdi is and can even be directly installed over drywall. It may take more than 1 beer:). All shower/tub areas should have concrete board (I prefer hardiboard). All it takes is the right preparation. Foam-core tile backing board has two big advantages over other backer boards. First Kerdi can be installed on drywall or cement board. Kerdi Shower Pan and Cement Board Walls - DIY Home Improvement Forum 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). Like cement board, the boards are heavy and hard to cut. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. 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. 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. The shower tray eliminates the need for a mortar bed. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! Overall, putting Kerdi over regular drywall can be done, with the proper steps in place to properly install the membrane and its components. Building Panel: Price $ 119 00 $ 202 06 $ 279 00. With Wedi products, the compound curves are easy to produce quickly. How should I transition between cement board floor and alcove tub? Additionally, the drywall should be primed with a latex primer before applying the Kerdi membrane. To properly seal a cement board for a shower, its important to first properly prepare the surface. Ready to join the 100,000+ homeowners matched with pros? #2 - Your suggestion has plenty of merit though. Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. Thanks for contributing an answer to Home Improvement Stack Exchange! There are many different types of underlayment to choose from, but they all serve the same purpose. I can take a bit of it off the wall and roll it into a ball. How to prep a shower for tile with Schluter Kerdi - TwoFeetFirst When I do another shower I'll use real cement board, not Hardi-board. Wedi showers feature a pre-sloped base that is already installed. It doesn't matter but you absolutely need to use both a substrate and a waterproofing membrane. It is easier to cut than cement board, it is mold resistant, and it has a built-in moisture barrier. Make sure to use multiple coats, if necessary. It allows you to easily and quickly create tile-ready elements in bathtub surrounds and platforms, vanities, showers, shelving, and much more. You absolutely need to include some sort of substrate (cement board, green board, regular drywall) with the Schluter-Kerdi waterproofing kit. That would tell him where the edge of the framing needs to be. And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! The curb doesn't have to be any wider than a 2x4. When applying thin-set mortar, the manufacturers instructions should be followed closely. How to adhere edge of bullnose tile to drywall as trim for shower/tub surround. Whether or not you need a Kerdi membrane is a factor of use. . 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? 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. Do You Need Uncoupling Membrane Over Concrete? - On Secret Hunt Yes, Hardie board needs to be waterproofed. Let's start! 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. Project Type: Tile / Category: Bathroom. Anyone who has done more than 1 shower shouldn't start without knowing that. Schluter Ditra VS Cement Board (Which is better?) I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. You troweled on thinset combing it out then pressed the Kerdi into place? It is important to seal any imperfections in the drywall to ensure a long-lasting installation and to minimize water infiltration. (3ft-3in wide)Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving . Sealing the tub flange for tile: 3 methods - DIYTileGuy 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. 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. 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. Schluter Kerdi-Shower-T/-TS/-TT 48 in. Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. If you can paint a wall, you can use RedGard. Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving independently? The 30-in. "thanks in advance :-) I know so little about this stuff, but when I watch videos (made by schluter-kerdi) everything looks so tidy and perfect - maybe that's not realistic'''" - Lisa Jasper It should look better than that and it's hard to tell but the wall stud spacing looks extreme and more than 16" I could not see if the screw heads where covered in the photos and in the one picture you can see that the screw and washer fitting where not covered. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. 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. Send us an email: , What type of thin-set mortar should I use when installing Schluter, Using a Prefabricated Shower Tray and Ramp. :/. There's a really great manual (with diagrams) that makes this all easier to understand. If you want a cement board, use Durock or Wonderboard. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'remodelormove_com-leader-2','ezslot_21',165,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-2-0');Once the seams are sealed, lay down a waterproof coating to the floor and walls of the shower space. 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. What's the difference between a power rail and a signal line? Is it suspicious or odd to stand by the gate of a GA airport watching the planes? #1 - Backer board has nothing to do with HD or any other big box. is that because water doesn't really hit that area?" - Lisa Jasper That's pushing it but should be fine. The difference between the phonemes /p/ and /b/ in Japanese. Kerdi on shower curbs - JLC-Online Forums With so many different types of underlayment to choose from, it can be hard to decide which is best for your project. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. I want to mount a cast iron bathtub, but not pull down my 1905 plaster and lath. 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). You can apply it on PVC, metal, slabs, walls, and floors. 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. 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. 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. After today's tutorial, you'll gain the confidence to transform your old bathroom into a new space. My understanding is that Schluter-Kerdi, being a sheet topical membrane, recommends just going with regular drywall instead of cement board but you can certainly use cement board as the substrate. 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. 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. Learn more about Stack Overflow the company, and our products. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I've never had a failure. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. Run a damp towel over the cement board surface to dust . 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. Ditra is manufactured in a 3'3 width and comes in various roll lengths (54sf, 150sf, and 323 sf). One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. Personally, I like standard drywall. When applying the thin-set, it should be applied in such a way that it fully fills any empty space between the Tile and Schluter product and is solid enough to support the weight of the tiles being installed. Your real issues are the lack of proper corners on this shower. Kerdi Membrane Installation (Step-by-Step Installation Guide) 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. Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers). Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. In a perfect job, it will waterproof. 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? After roughly two days I would fill the corner with silicone. Do I have to use Kerdi tape with Ditra 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. Caulk the gap. 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. the cost of the tile job. First, felt paper is stapled to the floor and covered with expanded metal lath. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. you should still water proof with a liquid membrane product like RedGuard. Cement board is known to be very heavy and somewhat difficult to cut. taping and prepping cement board for tile - Home Improvement Forum I always install it over cement board or backerboard, never over drywall, even blueboard or the mold resistant greenboard. Seams and joints should also be waterproofed and caulked to prevent water from seeping through. In my. Cement board is a good, reliable backer board that works well on both floors and walls. 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. You are wise to use a cement board. Learn more about Stack Overflow the company, and our products. vegan) just to try it, does this inconvenience the caterers and staff? Yes, Kerdi membrane can be installed over plywood. Yes, you need waterproofing behind shower tile. Using modified thinset on KERDI can be tricky and in some cases, it can cause issues. When installed, Kerdi Board creates a substrate that is level, flat, square, plumb, and dimensionally stable. All shower/tub areas should have concrete board (I prefer hardiboard). It is lightweight and made of expanded polystyrene. How to install a kerdi membrane over cement backer board - Quora Ceramic and porcelain tile, more than almost any other surface material, need a stable . Thanks Paul! Kerdi can even be installed over drywall. Regardless, cement board is a great, trusted tile substrate that will work well on both walls and floors. 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. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. 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. A place where magic is studied and practiced? there should be a small gap between the backer board and the tub. There are numerous ways to do this. 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. 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. Modified vs. Unmodified Mortar With Kerdi Membranes 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 complete schluter shower kit is like $700-$900 depending on the size - this includes the pitched foam shower pan. Probably the simplest way is to caulk the gap with 100% silicone or a urethane sealant. We are no longer supporting IE (Internet Explorer), Do not Sell or Share My Personal Information. In order to determine which tile underlayment is right for your project, you need to know which issue youre trying to solve whether its preventing subfloor cracks from transferring to the tile, soundproofing, moisture protection, or providing more rigidity to the tile. When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. GoBoard Vs. Kerdi For Your Shower: In-depth Comparison If you are good with a trowel and understand how to set up and use screeds as a guide for leveling or forming the mortar, pouring a traditional mortar bed may be a good alternative to tile backer board, especially on uneven or sloping floors. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. The site is called floorelf.com. Yes. I also used the Kerdi drain. 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.
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kerdi membrane over cement board