! rev2023.3.3.43278. . ", Signed,Never Hung Kerdi A Day In Her Life. Kerdi membrane prevents water damage and mold development. Anyone who has done more than 1 shower shouldn't start without knowing that. In . Need help liner vs liquid membrane question. I think it is engrained in me to do that so I forget to mention it. Waterproof showers are the trend today, so RedGard is an excellent alternative to cement boards that act as vapor barriers. The Ditra uncoupling design is lightweight, durable, and minimizes the possibility of cracked tile and grout. How to install a kerdi membrane over cement backer board - Quora 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. And for a more secure fit, you can also use screws. 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. To learn more, see our tips on writing great answers. First, felt paper is stapled to the floor and covered with expanded metal lath. Your email address will not be published. First Kerdi can be installed on drywall or cement board. Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. I hope you made the guy flood test his work prior to tiling the shower floor. Should I use Kerdi membrane or cement backerboard? Schluter approves their waterproof Kerdi membrane over drywall. Kerdi Vs. RedGard (Compared) - Build It Fine This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. 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. It only takes a minute to sign up. See the foam bench and the corners. The waterproof membrane isn't a substitute for the substrate. FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. Using self-leveling underlayment takes careful prep work. About an argument in Famine, Affluence and Morality, Acidity of alcohols and basicity of amines. 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. Re: Kerdi on shower curbs. The shower is ready for tile. Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. Sledge hammers for the floor, that might take a bit of time. It looks like Kerdi membrane is ~$2/sqft ($200 for a 108sqft roll) and kerdi board is $3.7/sqft ($115 for a 4x8 sheet (Lowes)). Hardie board is thirsty, but that's way too fast. Kerdi Board is expensive, but I can justify it because it saves time, and it's a joy to use. 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. Installation instructions vary depending on the type of Kerdi membrane being used, but typically the membrane is applied directly to a clean, dry plywood surface that is free from dust, dirt, and other debris. Yes. Firstly, it is important to ensure the wall is adequately prepared and that it is smooth, flat and free of defects. After today's tutorial, you'll gain the confidence to transform your old bathroom into a new space. Step 1: Measure the area. 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. With cement board as a substrate, the key is to ensure proper installation of the membrane. I always install it over cement board or backerboard, never over drywall, even blueboard or the mold resistant greenboard. 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. Step 6: Choosing the Next Tile. Cement board is the industry standard when it comes to tile substrates and the most preferred among professionals when installing porcelain or ceramic tile. 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. Do new devs get fired if they can't solve a certain bug? Once its cleaned, use caulk to seal all of the seams where the cement board meets the walls. Removing bathroom tile from cement backerboard, Transition from KERDI membrane backed, to not backed. It is a fast process that is hard to mess up if you do it right. The shower tray eliminates the need for a mortar bed. 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. First, its super lightweight compared with the rest. This means that even if your waterproofing system leaks, the cement board will remain intact. Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. It is easier to cut than cement board, it is mold resistant, and it has a built-in moisture barrier. To ensure that the Kerdi is completely dry prior to tiling, inspect the inside of the membrane for any signs of moisture or condensation. The site is called floorelf.com. Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. After roughly two days I would fill the corner with silicone. Prime first to create a flat, uniform surface that is free of dust, grease and other debris. #2 - Your suggestion has plenty of merit though. . With Wedi products, the compound curves are easy to produce quickly. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. The Kerdi membrane should be applied with the standard procedure, using a hogg brush or a notched trowel to spread the thin-set mortar and a roller to ensure appropriate adhesion. In the worst case, it's OK to cut the Kerdi, remove the damaged section, scrape up the thinset from the areas, and set a new piece of Kerdi. Mike Holmes uses backer on his show. It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. In a perfect job, it will waterproof. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. By the time you switch from the RG application to the Kerdi installation, it should be dry. Recovering from a blunder I made while emailing a professor, Minimising the environmental effects of my dyson brain. You peeled it off? That's the way us "Tile Guys" do it all the time. The main issue caused by non-waterproof cement boards is the eventual warping and damage to the tiles, making it difficult and costly to fix without removing all the tile and starting over. What is the proper substrate to use on tiled wall? vegan) just to try it, does this inconvenience the caterers and staff? LONDON. Step 2: Determine the room's center. (3ft-3in wide)Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving . When doing so, it is important to ensure that the drywall surface is clean and free of dust, grease, and loose paint. Why does the plumbing rough need to be moved? tripadvisor car rental tampa airport xnxx big tits; roommate questionnaire google form shadow of the dragon queen deluxe; cities where home prices are rising 2022 beachbody bodi block; mahogany tree seeds uses Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Kerdi Board Vs. Cement Board (What's The Difference?) - Home Mindset Additionally, if the cement board isnt waterproof, it can also cause mold and mildew issues, as well as dry wall damage from the moisture seeping through. While cement board and grout are not waterproof, Kerdi is and can even be directly installed over drywall. Kerdi Membrane is a product of Schluter systems. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Jessica considers herself a home improvement and design enthusiast. Should I use Kerdi membrane or cement backerboard? The best answers are voted up and rise to the top, Not the answer you're looking for? All shower/tub areas should have concrete board (I prefer hardiboard). The major drawback to cement boards is their weight, as they are incredibly heavy and can be difficult to cut. 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. 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. I agree that gypsum seems very questionable anywhere in the wet areas of a shower. Kerdi Questions and Answers - Kennedy Kitchens & Baths A complete schluter shower kit is like $700-$900 depending on the size - this includes the pitched foam shower pan. I have to redo my tub surround due to moisture leaks and failing grout. 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. 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. 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. Additionally, all seams should be sealed with Kerdi Fix and covered with fleece. Additionally, you can use KERDI-BAND around corners, seams, and joints to help with a waterproof installation. When screwed to the framing, thin strips of cement board fracture more easily than thin strips of fiber-cement. Both Kerdi Board and cement board are designed to smooth out uneven spots on the installation surface, create an unbending layer that wont flex underfoot, and also provide a waterproof barrier. There is definitely skill & planning required to doit right. 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. It's still applied to cement board. There are numerous ways to do this. Regardless, cement board is a great, trusted tile substrate that will work well on both walls and floors. 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? Make sure the floor is level in the shower. Is it Sinful to put Kerdi over Hardi-backer? - Houzz You troweled on thinset combing it out then pressed the Kerdi into place? The completed assembly takes the place of more traditional backer board when installed over 3/4-inch wood subfloors. However if installed on drywall it is only protecting one side. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. The manual can be found here: http://floorelf.com/waterproof, I would say unless you are experienced in working with Schluter-Kerdi waterproofing membrane kit, then I would say work with an easier waterproofing approach, either liquid waterproofing or a combination of liquid and traditional waterproofing (plastic covering the wood frame).