DITRA-HEAT features a thickness of 1/4" (5.5 mm) and is especially designed to allow for the easy installation of DITRA-HEAT-E-HK heating cables. How to Install a Shower or Tub Faucet. While the KERDI-SHOWER-TT shower trays are specifically designed for curbless showers, the KERDI-SHOWER-T and KERDI-SHOWER-TS shower trays, which feature thicker heights (1-1/8" [29 mm] - 1-1/2" [38 mm]) can also be usedseveral options are available to best accommodate your project. common sense would dictate that the same minimum 1/4-in-12 slope is critical to keep bulk water moving. Oatey's shower pan liners are offered with either CPE (CPE pan liners are recommended if your floor has a radiant heat system) or PVC sheet material at 30 mil. Emily Estep is a plant biologist and journalist who has worked for a variety of online news and media outlets, writing about and editing topics including environmental science and houseplants. Kerdi shower pan in a shower with 2 drains, How do I deal with 3" subfloor overhang and extreme joist notch, Medium term repair for cracked shower pan. Overlap the edges and roll them tightly. To install the subfloor, whether it is the primary or secondary layer, you will need to accurately measure the length and width of your built up shower pan, also taking into consideration any non-square corners. 3. in reply: 1) Lawrence Taylor - The subfloor is the first layer of plywood over the joists, which I lowerd about 1 1/2 inches by removing 2-by material that was put over these joints by the last guy who remodeled this bathroom. You then need to make that mark at the same height all the way around the perimeter of your shower walls (figure 2). You'll need various materials for a shower pan to build up several layers. This video shows you one way to set the. Alternative, proprietary products are also popular and can be approved locally. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The shower pan should be slightly larger than the drain assembly. Learn more about Stack Overflow the company, and our products. Multifunctional building panels: Schluter-KERDI-BOARD, 4. In this photo it is (or close enough to) 4 3/4. Increasing subfloor thickness under new shower pan, Installing ceramic tile on top of wooden bathroom floor. The dimensions will be about 40" x 10' (mud shower pan over entire area). 9 Common Subfloor Mistakesand How to Avoid Them, Mortared Shower Pan Install on Wood Subfloor, How to Prepare a Floor for a Walk-in Shower, A subfloor will add extra stability and structure to your shower area floor, Plywood is an easily accessible material, cut it to the shower area floor size, and install using non-moisture corrosive screws, Cement Backerboard needs to be installed with a light coat of tile adhesive to secure it to the floor and also eliminate any voids, Make sure to use as few material pieces as possible, avoid multiple pieces since this will allow the floor to flex. It is important to remember, if you choose a cement backer board, you will need to use the manufacturer recommended backer board screws. Remove any residual mortar by hand or with the trowel . Write CSS OR LESS and hit save. While the latter do not require any special considerations since the panels and pan are installed straight on top of the subfloor and drywall, custom-build walk-in showers require physically challenging preparatory steps in order to get the floor ready for the shower itself. The lower area of the shower walls should be open, with no cement boards in place yet. Prepare subfloor and drain plumbing. If total energies differ across different software, how do I decide which software to use? Send us an email: , Using a Prefabricated Shower Tray and Ramp. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A piece of plywood can be purchased in 1/2 or 3/4 thickness, and most cement backer boards will be 1/4, 1/2, or 5/8 thick. Second, since the surrounding framing and drain pipe are in place assuming a 1/2" subfloor, is my only recourse going to be to cut the base plates, take a 1/4" off the wall studs and extend the drain pipe ? Start your subscription today and save up to 70%. Hold the 1-by-4 rod on edge against the surface of the subfloor and move it across the surface of the mortar in a sawing motion. tar command with and without --absolute-names option. Alternatively, you can choose to install a cement backer board as your subfloor or as an addition for support and structure. Get your 2 x 4 (which is actually 3 1/2 x 1 1/2 - economy I guess) and set it on top of your drain (Figure 1). The question of whether the code requires a similar liner over shower seats often comes up, but the IRC offers no guidance here. Use tape and plastic to cover up the shower drain so that the mortar and other debris will not clog it. This includes mud-floated showers. in the area of concern. Later, grout is added to the tile seams. The thickness of the subfloor for a shower pan depends on several factors, including the specific requirements of your local building code as well as the finished floor material you will be using. Hassle with 5/8" first layer, especially with OSB, is that it's very easy to strip the hole with the screw. Shower pan membrane typically comes in thicknesses from 30 mil (0. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Should I use liquid water proofing membrane over a standard shower mud pan? Multifunctional building panels: Schluter-KERDI-BOARD, 2. Allow mortar to cure overnight before installing the base or pan. Nail the top of the waterproof material to the studs to prevent it from falling. Although curbless showers that were originally meant for handicap showers has become more popular and more in demand. The KERDI-SHOWER-LTS is a prefabricated shower tray designed to accommodate the KERDI-LINE linear drain along the perimeter of the shower. Designed to accommodate the KERDI-DRAIN point drain, the KERDI-SHOWER-T/-TS/-TT shower tray can be installed over a recessed subfloor to create an even transition from the floor tile right into the shower. Learn more about the essentials of waterproofing. Making statements based on opinion; back them up with references or personal experience. Further, DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Shower curbs, which prevent bulk water from running out of the shower, are not required, but there are provisions for their installation when theyre included (and where they are incorporated, theyre typically roughed in before the subbase). 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. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. The studs were rotten, the subfloor was rotten, and the top of the joists (in some places) were weak and rotten. If the subfloor is completely flat and level, proceed to step 3. Is it safe to publish research papers in cooperation with Russian academics? Generally speaking, the subfloor should be a minimum of -inch thick for any wet application. What were the most popular text editors for MS-DOS in the 1980s? Contact us: 888-472-4588 Tiling Project Guide. The code offers a number of choices for this application, from the time-tested but relatively outdated use of lead sheets and hot-mopped layers of asphalt felt to the common plastic liners used today. Should I redo this wall to avoid a mold sandwich? How to install a shower pan drain with this non-standard drainage pipe? Add mortar or small amounts of water, as necessary, so the batch is the consistency of moist mashed potatoes. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Uncoupling and waterproofing membrane: Schluter-DITRA. The base of a DIY shower pan needs to be about 2 to 3 inches thick at the edges before the tile is added. beyond and around rough jambs at the opening and at least 2 in. Multifunctional building panels: Schluter-KERDI-BOARD, 4. A secondary drain, mounted on the waterproof pan under the showers finished floor, drains this water away. 399K views 1 year ago Dry Pack mortar or Deck Mud, as it is called in California, is an important step in the construction of a tile shower pan. DITRA provides uncoupling to prevent cracked tile and grout. Rip the siding to 3-1/2 inches and screw it to the backside of the blocks for curved curbs. JavaScript is disabled. Actually will be basically a fully tiled wet room. Similar to the lower mortar layer that you created earlier, mix the mortar in the mixing tray, then dump it onto the floor of the shower. Become a member and get unlimited site access, including the Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. This top mortar layer must be very smooth, so take your time with it. Remove the top section of the shower drain by unscrewing or unbolting it. Premanufactured kit showers may be installed without worry. Frame the shower curb. Litigation and Insurance Claims Investigation Services. In order to add support and reinforce the subfloor structure, you can add a secondary layer that the built up shower pan will sit on top of. rev2023.4.21.43403. The first layer of deck mud does not have to be precise; it merely needs to provide enough slope from the outside edges of the shower to the actual drain for the pan liner to slope to. As for the wall studs, we would typically leave the wall as is and shore it up from underneath with blocking, also installing blocking along edges of the new sheathing. Would I be better w/ 12" o.c. We have to step up to go in shower!!! Install the liner over the preslope & wrapping the curb, extending a minimum of 6" up the wall. See Recessing the Shower Floor Technical detail here. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Thanks for contributing an answer to Home Improvement Stack Exchange! KERDI-BAND is a waterproofing strip used to seal all KERDI-BOARD butt joints, screw penetrations, and the connection between the KERDI-BOARD panels on the walls with the KERDI membrane laminated to the shower tray. 9mm . The flange provides a water barrier to prevent water from exiting he shower during normal use, or in case of a "back-up". TileTip.com is your premier source for tile information and all the remodeling questions you have before, during, and after the installation. Can I do the typical 16"o.c. In order to pull this off I would need to add joists that line up with the dimensions of the shower. Which was the first Sci-Fi story to predict obnoxious "robo calls"? For hardwood finish flooring, which average about 3/8-inch to 3/4-inch in thickness, 1/2-inch to 3/4-inch-thick plywood is the preferred subfloor, though there are a variety of . Making statements based on opinion; back them up with references or personal experience. I think The Evil Greebo does bring up a good point, because this is a steam shower I would be even more concerned about mold developing in this humid environment. How do you expect to prevent steam from getting everywhere? However, if you hear the term shower base, that is the portion that sits below the tray/pan. Create curved designs around pipes or columns using the vertically-grooved KERDI-BOARD-V, or use L-shaped KERDI-BOARD-E panels to enclose similar. This means that you will have a steeper slope on the walls closer to the drain. It is where visible water will escape and limit the rise of water up the walls. Sealing/Waterproofing between shower flange and hardiebacker, Short story about swapping bodies as a job; the person who hires the main character misuses his body. Prepare the Subfloor. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. One side will be resting on a wall, the other side the joists will be hung. Point drain with integrated bonding flange. Cut notches into the floor joists to the permitted depth using a reciprocating saw, if no reinforcement is needed according to building code or plans. With the flat trowel, taper down the mortar towards the shower drain. DITRA-HEAT features a thickness of 1/4" (5.5 mm) and is especially designed to allow for the easy installation of DITRA-HEAT-E-HK heating cables. When choosing your subfloor material, take into consideration how the thickness will effect the overall heigh of the built up shower pan in relation to your shower curb. Whatever the drains shape and location, the sloped subbase is critical to moving bulk water from the shower floor, and the sneaky water that gets through it, toward the drain. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. The first and most popular because of its affordability and ease of installation is paint-on latex waterproofing. Install the Subfloor. Prefabricated sloped shower tray: Schluter-KERDI-SHOWER-LTS, 3. These instructions assume you are building a shower pan on plywood subflooring, but if you are building a DIY shower pan on concrete slab, you will need to consider a riser kit. Get daily tips and tricks for making your best home. Waterproofing strip: Schluter-KERDI-BAND, 6. The flange is fusion welded to the perimeter of the shower base's core. The downside of these finishes is that they arent themselves waterproof. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. Remove any dampness or debris on the . Donato Pompo, CTC CMR CSI CDT MBA, is the leading tile and stone forensic expert and consultant in North America, and he is a National Tile Contractors Association Recognized Consultant. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? The entire bottom of the shower pan needs to sit on a flat, level surface. DITRA-XL is 5/16 (7 mm)-thick and allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24 (610 mm) o.c. Trusted, comprehensive guidance from the pros for a great-looking tile job in any room of the house. I plan to use blocking, and I suppose I could put 2 pieces of blocking between each joist. With the trowel, taper down the mortar to the shower drain. Therein the new sheathing would not run under the wall and the wall would be now supported by the blocking. 4. The entire shower will be done with Kerdi. 1. Which language's style guidelines should be used when writing code that is supposed to be called from another language? What risks are you taking when "signing in with Google"? Frame out shower stall area to shower pan dimensions. Coat both sides of the seam with the primer or sealer appropriate to the material, covering about 4 inches from the edges. Cut out the hole for the shower drain. Depending on the subfloor material, you will need to ensure it is sturdy enough to support the weight of a built up shower pan. Made of polyethylene, DITRA serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. This can be tricky to set up and should be planned for ahead of time when building a curbless shower. Built in place from various parts and pieces, site-built shower pans allow for an endless variety of shower-floor arrangements, including curbless, roll-in showers. While the detail images below demonstrate options for KERDI-DRAIN, please note that raising the bathroom floor is also possible with KERDI-LINE. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Asking for help, clarification, or responding to other answers. With KERDI-BOARD, you can build custom vanities, shelving units, bathtub surrounds, free-standing partition walls, kitchen islands, and so much more. The drain must be sealed so the pan can be filled with water to a depth of at least 2 in., measured at the threshold. Unless you waterproof the entire room floor, walls, and ceiling, steam induced moisture is going to penetrate SOMEWHERE to wood. Lee has over two decades of hands-on experience remodeling, fixing, and improving homes, and has been providing home improvement advice for over 13 years. Based on the comments to this answer, updated answer: Since you're waterproofing the entire room, its not essential. But you did not actually answer his question. There's nothing you can use instead of a shower pan in an enclosed shower. 1. The KERDI-SHOWER-TT prefabricated sloped shower trays eliminate the need for a mortar bed which ultimately reduces the weight and installation time. One way of measuring is to remove a floor register and insert a slightly bent coat hanger in a corner crack until it hooks onto the bottom of the subflooring. All trays feature integrated KERDI waterproofing and are available in several sizes to fit a variety of shower configurations. Apply some mixed mortar at the marked area of a low spot on the subfloor. With the utility knife, create slits for the four bolts on the shower drain to protrude upward. If a plywood subfloor already exists, it may be redundant to add to the subfloor, which would only be increasing the height and add minimal support and structure. Are you implying you would use pressure treated wood in the subfloor and not redgard it? Use the scrap piece of two-by-four and level to continually check the tapered slope. Continuing Education for Architects & Designers. Clean the Subfloor. If you use the DITRA and cover the seems that should be waterproof so there really should not be moisture getting to the subfloor. To do this, add a quart of water to the bucket or tub and pour in some of the dry mortar. But these drains go a step further. The hyperbolic space is a conformally compact Einstein manifold. Install a pre-slope. Prepare shower pan for the first mortar layer. I've never heard of doing this. Where theres no curb at the threshold, as in a curbless design, a temporary curb must be constructed for the leak test. Its strong. Premanufactured panels and pans as walk-in showers can be installed directly over the top of the concrete without any concern. Designed specifically for ceramic tile and dimension stone installations, DITRA serves as an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering. The same answer, I presume, is applicable to a dry pack pan as well? Install the liner over a pre-sloped bed, as I explain here. Code requires that lining materials in field-built shower pans slope 1/4 in. Walk-in showers are large showers that can either be created from scratch or built using premanufactured pans and wall panels sold as kits. >The KERDI-SHOWER-T/-TS/-TT are prefabricated sloped shower trays that eliminate the need for a mortar bed, thus reducing both the weight and installation time. Top-quality cast iron shower pans are very costly yet also very durable and can last for decades. You can now add the rest of the cement boards down to the level of the mortar bed. After the drain is set into the shower floor, measure the height from the subfloor to the top edge of the drain, deducting the thickness of the mortar bond coat and tile being installed. A major perk of site-built shower pans is that they allow the installation of custom tile, stone, or other aggregate floor surfaces. The nominal 5/16 (8mm) thickness minimizes tile assembly thickness. For a better experience, please enable JavaScript in your browser before proceeding. I used an unbonded mortar bed, so I have a tar paper slip sheet on the subfloor with wire mesh stapled to the top of it. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. IMHO, if you will be tiling the floor I would put a water proof membrane under the entire floor and not worry about using pressure treated wood for the subfloor. To learn more, see our tips on writing great answers. The KERDI-SHOWER-TT shower trays feature integrated KERDI waterproofing and are designed to integrate with the KERDI-DRAIN. Tile is installed over DITRA using the thin-bed method in such a way that the mortar becomes mechanically anchored in the square, cutback cavities of the matting. or 40 mil. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? This may require the services of a qualified design professional (e.g., architect, engineer, etc.). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Mix a batch of skimming mortar in a bucket or mixing tub, using fresh water and a wooden trowel. A subfloor is the layer at the very bottom of your shower pan. Using Tile To Create a Custom Shower Floor in Your Bathroom. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. The KERDI-SHOWER-TS features an off-center drain placement and is 1-1/2" (38 mm) high. The top shower pan floor covering is the tile. If working with a wood subfloor, you can build up the rest of the subfloor by installing either a 5/8" or 3/4" plywood/OSB panel on top of the wood subfloor along with DITRA or another Schluter-Systems uncoupling membrane. DITRA-HEAT-DUO features an integrated bonding fleece that provides sound control, as well as a thermal break. Remove debris at the area of the subfloor where the shower pan installs, using a shop vacuum. Specifically designed for ceramic and stone tile installations, the family of DITRA products provides effective uncoupling protection, preventing cracked tiles and grout. All trays feature integrated KERDI waterproofing and are available in several sizes to fit a variety of shower configurations. The subfloor needs to be a minimum of two layers of 3/4-inch exterior grade plywood before you can move to actually putting down the concrete layer of deck mud that provides the slope and the base for the shower pan tile. Mix it thoroughly with the trowel to remove any clumps. Replace the top cap and screw or bolt it tightly into position. It is normal to have a shower curb/dam. Generic Doubly-Linked-Lists C implementation. If you're working against an existing concrete floor where tile is going to be applied directly onto the surface of the slab, there are a couple of options. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. A minor leak may only be discovered after the nearby walls or floor below are heavily damaged (code is not concerned with a visible escape of water pouring out onto your bathroom floor, but rather a sneaky invisible leak). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Curbs must be at least 2 in. Run a thin bead of silicone around the perimeter of the drain. Ideally you would need to cut single, large pieces and screw them into the running boards or concrete slab. I understand the process of installing the membrane, deck and preparing the wall and ceiling substrate. Wood floors first need to be able to withstand the weight of a custom walk-in shower. If you are worried about it and need to use 1/2" sheathing for other reasons then just install 2x blocking perpendicular to the joist at a shorter distance on center, say 8"-12" O.C. KERDI-DRAIN grates are available in four stylish designs and multiple finishes. 2) The pre-slope under the pan liner channels any water that gets through the tile and grout into the weep holes in the drain assembly. Market Research for Exporting to the U.S. Catalina 2021 Ceramic and Stone Tile Market Report, Kitchen and Bath Cabinets Countertops Reports. Send us an email: , Using a Prefabricated Shower Tray and Ramp, 1. Then another layer of deck mud is added on top of the shower pan liner. In most cases, the job is easier with the help of an assistant. It only takes a minute to sign up. There are no special qualifications necessary to observe a wet floor, so the inspector should have little to do other than nod at a full pan and a dry floor. The objective of this piece of paper is to provide a layer of moisture-inhibiting protection on top of the wood so that when you put the first layer of your deck mud in place to slope to the drain, the wood does not soak up the moisture and cause the concrete to dry too quickly. KERDI is specifically designed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings.