A good rule of thumb is 24 hours per inch of thickness, then one more day on top of that to be sure. Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. Thanks for contributing an answer to Home Improvement Stack Exchange! So long as the seams and joint areas are properly prepared, the panels can also provide waterproofing. Kerdi's systems are fairly reputable. To learn more, see our tips on writing great answers. How should I transition between cement board floor and alcove tub? Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. x 60 in. With that said, lets take a look at the importance of choosing the right tile substrate, the options you have, and which tile underlayment material you should choose Kerdi Board or cement board? There's a really great manual (with diagrams) that makes this all easier to understand. Why does drywall work in a Kerdi Shower? - Terry Love Plumbing Advice I simply sponge off the excess. Cut the Kerdi membrane to size using a utility knife or scissors. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. There is a product called Kerdiboard you might want to look into. The tub flange can really be a pain in the butt when installing a tile tub surround. It is a pliable waterproofing membrane that also doubles as a vapor retarder. Creative, C'mon over for a beer! All shower/tub areas should have concrete board (I prefer hardiboard). If I go the kerdi membrane route, do I still need to tape the joints before installing the kerdi membrane . Schluter Kerdi-Shower-T/-TS/-TT 48 in. Hardie board is thirsty, but that's way too fast. Then you can apply a thin layer of KERDI-FIX to the board, the membrane over top . Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com We tried adding water to the thinset, we tried using a larger notch trowel, but nothing seems to make the Kerdi stick. It fell right off? There is no cutting or fitting of boards, and a mortar bed is good for leveling and flattening uneven or out-of-level floors, which are common in old houses. 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. How do you show the depth of a hole in a drawing? 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. #2. To create a watertight shower assembly, we installed Schluter's Kerdi membrane over the drywall, just as we would for tile.Write by:. First, it's super lightweight compared with the rest. 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. Once youre sure that the membrane is completely dry, you can then move forward with tiling. To ensure that the Kerdi is completely dry prior to tiling, inspect the inside of the membrane for any signs of moisture or condensation. Learn more about Stack Overflow the company, and our products. This is the traditional tile backer. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. You just need a hammer and wonderbar for the walls. Step 8: Allow to dry. Kerdi on shower curbs - JLC-Online Forums How to adhere edge of bullnose tile to drywall as trim for shower/tub surround. Kerdi Board as a whole is much easier to install than Cement Board. Like cement board, the boards are heavy and hard to cut. Kerdi Membrane is a product of Schluter systems. The problem is on the back side of the drywall, which is not protected. Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com They are designed to provide a waterproof, vapor-tight layer to the substrate, which in this case would be the cement board. It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. Shower Install - Cement Board or Schluter? - RedFlagDeals.com If done according to manufacturers instructions, it will seal nicely. Hardie board is a cement-based siding product that is water-resistant, but not waterproof. you should still water proof with a liquid membrane product like RedGuard. Step 3: Apply Thinset. Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. It worked well - just like wallpapering. Additionally, seal the space around any pipes and fixtures that can be found in the shower. Foam-core tile backing board has two big advantages over other backer boards. Additionally, all seams should be sealed with Kerdi Fix and covered with fleece. Are there tables of wastage rates for different fruit and veg? Install the Schluter Kerdi membrane over the backer board using the correct mortar. PROBLEM SOLVED for Tub Flange when Installing Cement Board and Tile. If you do not already have the hardi up, I recommend using real cement board (Hardi is a fiber-cement) or drywall. Also - use a good thinset. First, you would waterproof with your favorite liquid waterproofing membrane of . 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. 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. What are the differences between "paperless drywall" and "cement board"? To line niche shelves, for instance. It costs more but it;s worth it for the ease of install IMO. It is designed to form a waterproof layer between cement board and tiles, helping create a watertight installation. Kerdi-Board panels allow the installer to prepare and create a broad range . Schluter Kerdi on regular drywall - GreenBuildingAdvisor Cement board is the industry standard when it comes to tile substrates and the most preferred among professionals when installing porcelain or ceramic tile. Tile Backer Board Breakdown - DIYTileGuy When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. Fiber cement board is available in 1/4-inch and 1/2-inch thicknesses. Can you put KERDI over regular drywall? - remodelormove.com 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. Everyone knows brick and stucco, but what about fiber cement and metal? We tried soaking the cement board and applying the kerdi in small sections. To put things into perspective, consider that a tile floor is made up of three layers: the subfloor, the underlayment, and the tile surface you walk on. 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. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. Putting this stuff on walls is difficult and time . Kerdi Membrane Over Greenboard (Is It Recommended?) ", Signed,Never Hung Kerdi A Day In Her Life. 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. if you go with vapour barrier, then cement board. In normal residential use I wouldn't worry about it. However if installed on drywall it is only protecting one side. Why do you think each board should be able to move at all let alone independently? I hang Kerdi on cement board and fibercement board all the time. Kerdi Board Vs. Cement Board (What's The Difference?) - Home Mindset Installing cement board involves placing the boards atop a layer of thinset adhesive, a process known as bedding. We sponge water onto the cement board. 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.' Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. I have corrugated metal shower surround & grab bars. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. When applying the primer, make sure to cover all surfaces thoroughly, as these will be completely covered by the KERDI membrane. Anyone who has done more than 1 shower shouldn't start without knowing that. Send us an email: , What type of thin-set mortar should I use when installing Schluter, Using a Prefabricated Shower Tray and Ramp. RedGard On Hardibacker Board. See the foam bench and the corners. Kerdi Board vs. Cement Board: What Are The Major Differences? You have to seal every little hole in the floor so the underlayment doesnt seep into spaces below. But you might be struggling to figure out what kind of paint to use on garage walls. But there are downsides. Anytime Mongo. Hardibacker is a VERY "thirsty" material that sucks the moisture out of the mortar VERY quickly and I don't like it. Kerdi 3 ft. 3 in. However, if installed on drywall, it only protects one side. 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. Once this is done, continue the installation by following the directions for the particular Kerdi product being used. In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. When it comes to applying KERDI, however, it is advised to use a regular thinset that includes portland cement as its main component. The best answers are voted up and rise to the top, Not the answer you're looking for? DensShield is one common brand. You'll know the RG is dry when it turns reallllly dark bright red as opposed to the pinkish color when applied. How to prep a shower for tile with Schluter Kerdi - TwoFeetFirst I still wet the walls first. For indoor projects and gypsum board, thinset with a latex acrylic modifier is ideal. How to install a kerdi membrane over cement backer board - Quora 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. 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. I guess that why it was so frustrating that cement board is just sooo thirsty. Maybe try another brand of thinset? 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. The taping knife at a low angle makes an enormous difference, and I'm very grateful for that hint. Once the adhesive has been applied and has had time to properly cure, then the KERDI membrane can be applied to the wall. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. Why you use cement board? Like the example above. The major drawback to cement boards is their weight, as they are incredibly heavy and can be difficult to cut. 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. 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. 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.

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