@Charlie Baum. Absolutely. Abut the individual panels over the center of the studs or other solid backing. Choose a notched trowel to match the tile format, and back-butter the tiles, if necessary, to attain full coverage. Sheetrock is generally viewed as a quality product, and it comes in different forms, including moisture-resistant and sound-dampening panels. Generally, Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar is used. Cut and remove the KERDI-BOARD such that the niche will be supported on both sides by the studs or other wall framing. In case of outdoor storage, protect the material from direct sunlight and weather exposure. But with wet sanders, it can be quite hard to get perfectly smooth seams without waves and without dissolving and removing too much of the dried mud. Not sure what to do for the ceiling since there won't be any tile. Moen Lindor Brushed Nickel Wall Mount Single Towel Ring. 4.7 out of 5 stars 293. That's complicating an outer corner transition to drywall that covers the outside of a wall between the shower stall and tub on the other side. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Moen Caldwell Brushed Nickel Metal Bath Accessory Set. For complete installation guidelines and warranty criteria for KERDI in showers, steam showers, and bathtub surrounds or KERDI-DS in steam rooms , please download the Schluter- Systems Shower System Installation Handbook and view the installation videos available below. b. RONDEC-CT and RONDEC-STEP profiles are installed with Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar in conjunction with the tile. The transition should be strategically placed on the moisture-free side. But I can't picture how that would look.or how I would keep all the mud off the painters tape, especially when I pull it off if the compound had dried. Some care is necessary to ensure crisp, sharp corners. i could post a pic if that helps Comments (34) Charlie Baum Original Author 2 years ago Is the only real solution to use a corner bead? The sanding dust, while not toxic, can irritate lungs and eyes, so it's important to wear a dust mask and eye protection while sanding. You basically want to create a dam so that water does not continue under the glass via grout and mortar. Thanks! Glass tiles are unique products and may require special consideration. The walls were easier because I had tile wrapping around the corner so I just taped and thinset those and tiled overtop. Woot. When creating the above transition, the side with the Kerdi board should be the one that is exposed to moisture because it is waterproof. I need to finish the outside corner above the shower alcove. Choose a notched trowel to match the tile format, and back-butter the tiles, if necessary, to attain full coverage. Thin-set mortar takes time to cure. And without using up more time, proceed to step three. (Wear a dust mask and eye protection while sanding.) View Full Version : Kerdi board / Drywall outside corner. How to finish tiling an outside edge for a shower? It only takes a minute to sign up. Calculate your building panels for a quick and easy waterproof installation. Schluter-Systems requires the use of Schluter SET , ALL-SET , FAST-SET, or an unmodified thin-set mortar meeting Can I use a premixed thin-set mortar to install Schluter-KERDI and tile in my shower? Normally you would get something like the picture below to cover the side of the tile. If you plan to screw finishing hardware (e.g., shower door hinges) to the U-shaped profile, adhere the matching KERDI-BOARD-ZFP flat plastic profile to the back of the U-shaped profile to improve the fastening of the screws. With a 6-inch taping knife, apply a smooth, thin layer of mud over the joint. 6. I have a couple of outside corners that i have to deal with that transition from kerdi board to regular drywall. Started 2 days ago. Over-sanding is a common DIY mistake. The tiles can be installed using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar once the bonding materials used to construct the partition have cured sufficiently to stabilize the assembly. Drywall tape is available in two types: paperand fiberglass mesh. Note: When using the prefabricated shelf, determine the desired height of the shelf and mark with a level line. @thisisnotadrill i am about 3/4 through demo. Manage Settings Fasteners are installed after the thin-set mortar has hardened. 1/4" in from the outside edge. and KERDI-SEAL-MV at the mixing valve. Butter the sides and back of the shelf with Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar and solidly embed it in the niche, resting on the previously installed tile. Additional material may be removed from the underside of the KERDI-BOARD to allow installation of the fixture hardware. Another challenge you may encounter when building a Kerdi board to drywall transition is if its located in a corner. Houzz Call: Have a Beautiful Small Bathroom? The excess weight of the door can make it weaker. Thank you, very kind words. Few grout lines was another reason. Note: See section Waterproofing on the use of KERDI-BOARD in bonded waterproofing assemblies. I'm putting kerdi board up on a shower stall and because of stud spacing, I had to go with a thicker board than the typical 1/2-in most installs use. I am all ears though. Most wall surfaces in new construction are made from drywallthin panels consisting of mineral gypsum sandwiched between paper faces. Cut KERDI to size prior to application. For many builders, it can be confusing how you can transition between these two materials. This detail is part of a barrier free installation. Do "superinfinite" sets exist? Spread the drywall mud evenly until its smooth. The countertop/backsplash transition may be finished with one of the Schluter-DILEX cove-shaped profiles. In case of outdoor storage, protect the material from direct sunlight and weather exposure. Schluter-KERDI-BOARD is a multifunctional tile substrate and building panel, which can also be used for creating bonded waterproofing assemblies with tile coverings. Once cured, I pulled the nails and used kerdifix on the holes. Claire Larece That section of the house is a project for another time. I made sure to keep the tile side completely clear of mortar. Dining room wainscoting/board and batten help. If there are any spots with torn paperon the drywall cut them off with a razor or other sharp tool. I am just not sure how to build this. Schluter-KERDI-BOARD over wood or metal framing. When building a shower or a kitchen, its normal to come across scenarios where the Kerdi board meets the drywall. KERDI-BOARD is adhered directly to base cabinets using the Schluter-KERDI-FIX adhesive. It also creates a smoother finish while allowing you to tape over the drywall and Kerdi board transition. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. You can run the final row of tile over the joint between the Denshield and of the drywall. How to Replace Damaged Drywall in a Ceiling, Composition of Drywall and Joint Compound, 7 Different Types of Drywall and How to Choose One, Drywall taping knives (6-inch, 10-inch, 12-inch). Hi - My wife wants tile in the shower . KERDI features a modified polyethylene (PEVA) core with non-wovenpolypropylene on both sides to anchor the membrane in the thin-set mortar. Houzz Call: Show Us Your Hardworking Studio! It will be subsequent layers of mud applied with a wide wallboard knife that raises out the joints so they are perfectly flush with the surrounding panel areas. No, the KERDI membrane does not have a front/back to it. Drywall is a very easy material to install, and most of the challenge lies in finishing itcovering the seams between panels with paper or fiberglass tape and then finishing the seams and the screw or nail holes with drywall taping compound to hide them. Where these surfaces will not accept a bond to Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar, use KERDI-FIX to bond KERDI-BAND. When applying drywall mud, you must ensure that every area of the transition is covered from top to bottom. The shelf may be raised at the back to create a slope, or the tile may be set on a slope, to prevent water from pooling in the finished application. Prefabricated corners are factory mitered and then welded together to prevent separation during the installation of the edge trim. Apply the First Mud Coat (Fiberglass Tape), Finish Outside Corners and Screw/Nail Heads. 7. Seams can be constructed by overlapping the edges of the KERDI 2" (5 cm) using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar, or by abutting the edges and covering the joint with KERDI-BAND using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar. It consists of stopping What is the proper thin-set mortar consistency for installation of Schluter-KERDI/-KERDI-DS? For floor/wall connections, use KERDI-BAND. But putting large tiles up made me very grateful I spent the extra time and effort to make the walls plumb and square. Send us an email: , Using a Prefabricated Shower Tray and Ramp, Features sealed inside corners for effective waterproofing, To enhance its appearance, frame the niche using select Schluter, Larger sizes include a prefabricated, adjustable KERDI-BOARD shelf. 4. Cut a length of tape to the exact length of the joint, and press it over the joint, making sure there are no bumps or ripples. But it wont be structurally strong. This is confusing since Kerdi Board has no Kerdi on it. Note: See section Waterproofing on the use of KERDI-BOARD in bonded waterproofing assemblies. The KERDI-BOARD-ZW angle profile or KERDI-BOARD-ZB U-shaped profile may be included in the joints for improved stability. Your drywall surface is now ready to accept paint, wallpaper, or a texturizing treatment. Fiberglass tape can simply be folded into a long angled strip, then pressed into the corner to adhere it to the walls. First Kerdi can be installed on drywall or cement board. For complete instructions refer to the Schluter website. coarse thread wood screw for wood studs and self-tapping for metal studs) and corresponding KERDI-BOARD-ZT washers. We are working on a similar transition. Any ideas for repairing water damage on outside corner with a rusty corner bead? 3. Please note that its impossible to avoid an overlapping seam in this scenario. If you follow the above instructions carefully, no one will even realize there is a transition between these two materials. Tightly abut the individual panels and align them appropriately.5. Does Schluter-KERDI waterproofing membrane have a front/back to it? 4.6 out of 5 stars 154. We've added a "Necessary cookies only" option to the cookie consent popup. Apply a corresponding piece of ceramic tile with thin-set mortar in the resulting space flush with the surface of the KERDI-BOARD. In the kitchen on the long wall with the fireplace, how about if I did a large design stencil in the same color but in a glossy paint, then it would be a faint design. From there, you can tile or paint over the transition and finish your project. ncdu: What's going on with this second size column? Joint compound is available in premixed and powdered forms. There are inside corner beads that are mudded into interior corners, as well as outside corner beads that are applied to outside corners. Waterproofing Strip: I will have a shower wall of kerdi board coming out and making an outside corner with drywall. Next, scoop some mud into a compound tray. But taping and mudding can be a frustrating job, so it's important to understand the process well. . Connections to fixed building elements can be achieved by using KERDI, KERDI-BAND, or KERDI-FLEX in conjunction with KERDI-FIX, suitable trowel-applied waterproofing materials (such as urethane or similar), that require atmospheric moisture to cure, or other suitable sealing compounds. @Tundra Finish Works LLC brings up an excellent point about how the trim terminates around the dining room ( at door and window casings). It consists of an extruded polystyrene foam panel, with a special reinforcement material on both sides and fleece webbing for effective anchoring in thin-set mortar.KERDI-BOARD can be used in a multitude of interior applications. Please call Schluter-Systems Why should I use the Schluter-Shower System? Howarda. Recovering from a blunder I made while emailing a professor. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 2. But overall I like it. Various materials and finishes are available to match the sink rail profiles above. nice and clean! It can be cut to length with tin snips, then simply pressed into a corner that has been coated with taping compound. Taping compound is the mud used for the main application of tape to the seams and corners, and for the second coat. Learn about the different sizes and types of this construction material for walls, plus which kinds work best for which rooms, Corner sinks, floating vanities and tiny shelves show us how youve made the most of a compact bathroom, Soon-to-be empty nesters build a dream home for the next phase of their lives, Surfboards, clean lines and an ocean-inspired laid-back style come together in this familys home on James Island, Dreamy whites, warm wood accents and classic finishes help make this couples first home a relaxing retreat, Before you pick up a single tile, pull from these tips for expert results, Read how a common exterior siding became so popular for interior paneling, Here are 5 key steps to take to ensure you're happy with your wall paint color, Use this step-by-step guide to figure out what you want and how to make it happen, Upload a photo of your home studio or workshop and tell us how youve designed it to work extra hard for you, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, https://tilemarketofde.com/products/in-stock-tile/statuario-lux-24x24/. The consent submitted will only be used for data processing originating from this website. If you find yourself dealing with an open seam between Kerdi board and drywall, do not be tempted to tile over it. Apply thin-set mortar to the substrate and/or onto KERDI-BOARD with a notched trowel. Schluter KERDI Outside Corner - 2 Units. Factory welded corners come with 8" legs in each direction, however, custom leg lengths can be ordered. California Specification 01350 is referenced by various green building standards and rating systems. If you have some building experience, this is a project that you can easily pull off by yourself. The wall between the original cottage and the 20'x20' addition was knocked out in the name of "open concept" somewhere 20-25 years ago, because the previous owners (not the previous-previous owners who built the addition) were deeply stupid. Schluter Kerdi-Board 2" with Stainless Steel - 16x16 - Face 23in. i also gotta say i love how you matched the veining on the tiles that sit in the corner, just between the top and middle shelf :) it looks continuous! Assuming you want to install a shower door, it should be before the transition and on the side of the Kerdi board. Schluter -KERDI-BOARD-SN is a prefabricated shower niche that is fully sealed, quick to install, and integrates with KERDI and KERDI-BOARD shower assemblies. I can only provide advice according to TCNA standards. When building a shower or kitchen, you use a Kerdi board because it is waterproof. For most installations of KERDI-BOARD, tile can be installed right away. It could be notched to eliminate any build up due to corner bead. Yes. Although I've heard and read that you can mud kerdi board just as easily as drywall, but covering the edge of the kerdi board with factory edge of drywall makes finishing much simpler in my opinion. Following the process you used for either paper or fiberglass tape, finish the inside corners where walls meet. IMO. Fully embedded KERDI-BOARD Any board thickness suitable 1. Larry.. Use the widest drywall knife trowel you have to apply this coat. The cost of such a renovation would be high, and if other walls in that room wont be exposed to moisture, there is no need to replace the drywall with Kerdi board. Calculate all your membrane requirements for your project. A bearing plate must be provided for fastening fixtures (e.g., faucet, soap dispenser, etc.) If you do this, make sure to mix the water in thoroughly. This can be achieved by sandwiching the panel between adjacent KERDI-BOARD panels, fixed building elements, etc. 2. Yes, you can, but it will be expensive and time-consuming. After all, they are all built differently. Schluter-KERDI-BOARD is adhered to the permanent wall in such a way as to provide lateral stability. What do you think? Butt vs Tapered Drywall Joints: Which Is Best? @Jonathan Gunnell Hey Jon! Please refer to the Schluter-Shower System How long do I have to wait before I can install tile on Schluter-KERDI-BOARD? The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. Immediately press the paper tape into the mud, centered over the joint. https://tilemarketofde.com/products/in-stock-tile/statuario-lux-24x24/. Fasteners are installed after the thin-set mortar has hardened.Note: See section Waterproofing on the use of KERDI-BOARD in bonded waterproofing assemblies. This keeps the room looking simple and unified. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. is that because water doesn't really hit that area?" - Lisa Jasper That's pushing it but should be fine. "..2) the kerdi band isn't stuck flat -- the edges in some spots are wavy. Normally I would have put in a metal corner trim but needs to go behind the tile. All joints of KERDI-BOARD panels must be sealed with KERDI-FIX or thin-set mortar. 3. In general, unmodified thin-set mortar is a blend of Portland cement, sand, and water retention agents that is mixed with How far up the wall do I need to install the Schluter-KERDI? Including flashed up the walls behind base board actual water damage is not a concern. I had been planning on doing the same thing you mentioned as your original plan early on in this thread. Fasten all corners and limit fastener spacing to 12" (30 cm) o.c. Drywall: Finishing an Outside Corner A pro demonstrates how he creates a smooth finish by applying the right amount of compound and pressure to the corner bead. 3. Create a fully waterproof and vapor-tight enclosure for tiled bathtub and acrylic shower base surrounds. I would top it out at the height of the pony wall. The tiles can be installed immediately using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar. It consists of an extruded polystyrene foam panel, with a special reinforcement material on both sides and fleece webbing for effective anchoring in thin-set mortar.KERDI-BOARD can be used in a multitude of interior applications. If the finish doesn't quite meet the smoothness test, dont be afraid to apply another thin layer of mud. Sep 10, 2017 Generally your finish tile, whether bull nose or Kerdi strip will overlap onto the sheetrock, forming a seam of its own. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. While standard drywall comes in " and " thicknesses, greenboard is sold in " and 5/8 thicknesses. Make sure its bonded and well attached to the drywall mud, and thats it. If the transition features Kerdi board slightly overlapping drywall, it wont be level. DIYers, though, are more likely to need a light sanding before applying the fill coat. The other side with drywall should be moisture free. First, to finish drywall, youll cover seams between the panels as well as screw or nail holes. Not sure if you're in the PA/DE area but I opened an account with them and paid $5.99/sqft instead of the advertised price. A special drywall sanding block can be mounted with fine-grit drywall sandpaper, and it accepts a threaded pole to allow you to easily sand high up on walls without a ladder. Very interesting. The problem here would be that there wont be an anchor point for the Kerdi board strip to be attached to. I am extremely pleased with how it turned out. when that is installed I will finish mud that bit of exposed drywall on the other edge and feather it right into the door casing. You will have to be very careful when applying drywall mud to a transition located in a corner because any buildup can be challenging to smoothen out once you are done. Whether you are building or renovating a shower, you are obviously working with a budget. I used the factory edge of drywall along the profile so to finish it, I perfectly taped the edge of the profile and just caulked that seam. Countertops made of KERDI-BOARD Minimum board thickness = 1-1/2" (38 mm) 1. Clean the tools and put the lid back on the bucket of mud. Screws may be placed between adjacent panels such that the washers fasten both panel edges. Cross your fingers and hope it's all OK. Not the best Kerdi Showcase. You don't need to make the wainscoting 5 feet. The pan area is recessed down to the joists which was no picnic with the engineered I joists. x 48 in. For acid-resistant coverings, use an epoxy adhesive to set and grout the tile. Then drill a single screw through the washer/KERDI-BOARD and into the stud. @Charlie Baum wondering how your project is going!!! But it generally has to be installed under tile. Fastener locations must coincide with mortar spots. ".1) is is okay to use kerdi board instead of ditra on the floor? I took like 2 months off over the summer and didn't even step in there as was on vacation/fishing/traveling. Are you doing a curb or curbless? How to join seams between hardiebacker and drywall in a corner? Learn more about Stack Overflow the company, and our products. Impact on that corner relying on the foam board is risky. Continuing Education for Architects & Designers. This is where the glass will be installed. Otherwise, I'll have to try to mud over the foam edge of the Kerdi board in order to paint it and blend it into the drywall. Using the breaking point where the floor tile is flat and the slope toward the drain begins. Pay special attention to the consistency of the thinset. Note: If the bond between the thin-set mortar and substrate is questionable, additional mechanical attachment with the KERDI-BOARD-ZSD anchors or KERDI-BOARD-ZT washers and corresponding screws is required. Regarding the corner bead, you can use one from any company. But its not recommendable because the transition wont be flush. If you had tiled over it, water could leak past the Kerdi board, and your waterproofing attempts would have been futile. Waited a few minutes and pulled the tape and it was damn near perfect. Which folks on Houzz call Schluter for some reason. Depending on which type of purple drywall you choose, a 4- by 8-foot panel typically costs between $15 and $60 (high-impact and sound-breaking options are available). Insert the niche and fasten to the studs using wood or metal screws and KERDI-BOARD-ZT washers, placing the fasteners along the seam between the KERDI-BOARD and the niche. Schluter-Systems does not recommend the use of premixed thin-set mortars (mastics/adhesives) in any KERDI installation. I have one more finishing tile piece to put over the top layer of tile. Fiberglass-mesh tape is self-adhesive and can be applied directly to the drywall seams without first applying a layer of mud. The best answers are voted up and rise to the top, Not the answer you're looking for? Continuing Education for Architects & Designers. Then I laid tile. I wonder if I can just slap some thinset on the corner and stick the vinyl corner bead to it? Can Martian regolith be easily melted with microwaves? $14.31 $ 14. When using the KERDI-BOARD-SN prefabricated shelf, determine the desired height of the shelf and mark with a level line How to Tile a Niche with Schluter Profiles, How to install Schluter-KERDI-BOARD-SN Niche with KERDI Membrane, Schluter-KERDI-BOARD-SN Shower Niche within KERDI-BOARD Assembly. In Stock. Keep in mind you did use foam board. Note: See section Waterproofing on the use of KERDI-BOARD in bonded waterproofing assemblies. Remove any air pockets. With the joints and corners all taped and mudded, apply a small amount of compound over each nail or screw head and smooth the surface. x 16 ft. 5 in. Pretty straight Forward except for having to wet shim the walls. do you recall the make/model of the floor tile? Apply the panels to the wall and firmly press them in place to ensure full coverage. Gypcrete Repair In A Condo (Detailed Guide). Sheetrock is a popular brand of drywall, which is why you often hear the name used interchangeably with drywall. See the foam bench and the corners. Apply KERDI-FIX to the inside vertical surface of the KERDI-BOARD-ZC profile and slide the profile over the edge of the KERDI-BOARD, pushing it tightly against the panel. If you are using paper tape, it must be embedded in a layer of compound, and thus the process takes slightly longer than with fiberglass tape. Once the entire membranewith seams, corners, and connectionshas been completely bonded, and therefore waterproofed, the covering may be applied. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Mutually exclusive execution using std::atomic? Some of our partners may process your data as a part of their legitimate business interest without asking for consent. But wouldn't you want a corner bead there to protect that corner? x 38 in. Everything is pretty straight forward so far except one plumbing issue. There are two methods to seal KERDI-BOARD to a bathtub. Now you will have to go with some kind of bullnose or trim piece, much like you would trim out a door. Kerdi-Kereck-F Pre-Formed 90 Waterproofing Outside Corners (2-Pack) Kerdi-Band 7-1/4 in. 3. No. As you plan how you will create this transition, ensure there is a stud on the frame behind it. Use of KERDI-BOARD in non-bearing partition wall systems Minimum board thickness = 2" (50 mm)1. Waterproofing strip seals abutting joints of membranes and building panels, Rectangular shelf for prefabricated KERDI-BOARD-SN niche, Screws and washers for fastening KERDI-BOARD panels to stud framing, Waterproof, multifunctional tile substrate and building panel, Bonded waterproofing and vapor-retardant membrane, Point drain with integrated bonding flange, Contact us: 888-472-4588 The corresponding QUADEC or RONDEC profiles are installed with Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar in conjunction with the tile. Sinks may be mounted on top of the tile or tiled-under using RONDEC or QUADEC profiles and corresponding sink corners. As you can see from the guide above, its a straightforward procedure, and you dont need any unique tools or equipment. Charlie, I would still install cornerbead first to reinforce the corner. Then tile. It looks like you have Kerdi installed on the floor and not Kerdi Board. I will not be tiling the ceiling. https://www.schluter.com/schluter-us/en_US/Profiles/Movement-Joint-Profiles/Perimeter-Joints/Schluter%C2%AE-DILEX-BWA/p/DILEX_BWA. Exceptions include curved wall areas and non-bearing Can I install glass tile over Schluter-KERDI-BOARD? To learn more, see our tips on writing great answers. It is best to use a hand sanding block; do not use a power sander on drywall. Cut and remove the wallboard such that the niche will be supported on both sides by the studs or other wall framing. I will just end up painting it. As a general rule, either paper or fiberglass tape will work for straight seams, but inside corners are best covered with paper tape. Find some existing tutorials and project documentation videos to learn how-to get the best out of our products - for more fun in your life, start now! Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Cover the joints with KERDI-FLEX. How to Fill Gaps Between Hardibacker and Drywall? Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? This grout joint is the location for the capillary break. KERDI-BOARD can be mounted vertically or horizontally on wood or metal framing with screws (i.e. Such partition walls are not to be considered load-bearing structural walls. My shower is constructed from kerdi board. The best place to do that would be on the Kerdi Board. Drywall comes up to the outside corner, and overlaps the raw kerdi edge. Where these two meet, what is the proper way to finish it so it's a nice corner? The top two are the same model Shelf-E squared off and the bottom is a Shelf-E triangle for my wife to put her foot to help her shave her leg. There are special corner drywall knives made for this purpose, but you can also apply compound and cover the tape using a standard 6-inch wallboard knife. 2. The size of your selected tile will determine if it's a issue that needs addressing.