A major perk of site-built shower pans is that they allow the installation of custom tile, stone, or other aggregate floor surfaces. Ask an assistant to help position the shower base or pan in place, with the hole for the drain centered over the drainpipe or hole in the subfloor. Cut out the hole for the shower drain. Because of this, hand-fabricating shower pans can increase the chance of failure, and code provisions generally address two hazards: leaks and sanitation. 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. The shower pan should be slightly larger than the drain assembly. In most cases, the job is easier with the help of an assistant. What is Post-Tensioned Concrete and Can I Install Tile Over it? The preslope is laid on tar paper. Contact us: 888-472-4588 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. The KERDI-SHOWER-T is offered in five sizes with perimeter heights ranging from 1-3/32" (28 mm) to 1-1/4" (32 mm). All trays feature integrated KERDI waterproofing and are available in several sizes to fit a variety of shower configurations. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. >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. Once the moisture barrier is in place, a layer of wire mesh or chicken wire is put down and stapled to the subfloor. Thanks for contributing an answer to Home Improvement Stack Exchange! Why don't we use the 7805 for car phone chargers? 2023 The Taunton Press, Inc. All rights reserved. Donato is the founder of CTaSC. Uncoupling and waterproofing membrane: Schluter-DITRA, 5. A recessed shower floor allows for the installation of a sloped mortar bed or a prefabricated shower tray that is flush with the rest of the bathroom floor. This slope is later refined with a second bed of mortar. joists where the wall studs are offset from 2 of 3 joists? Fold the corners into place; do not cut the corner material. If it leaks, it fails. 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. While pre-fabricated pans are a great convenience for do-it-yourselfers, the traditional way of building a shower pan with tile on a mortar base allows maximum creativity. Remove the subfloor material. Test fit shower pan drain housing into subfloor bore hole. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? Asking for help, clarification, or responding to other answers. Alternative, proprietary products are also popular and can be approved locally. The finished floors of showers can slope up to 1/2-in- 12; anything steeper could be a slip hazard. Use the scrap piece of two-by-four and level to continually check the tapered slope. Cut two-by-six lumber to fit between the studs of the shower stall. 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. Because they act as dams that can raise water level in the shower area, the top of an included curb becomes the benchmark for the height of waterproofing. Once it dries, it creates a waterproof barrier over which you can install the tile. Measure from the liner to the top of the 2 x 4. The same answer, I presume, is applicable to a dry pack pan as well? 3. Run a thin bead of silicone around the perimeter of the drain. Connect and share knowledge within a single location that is structured and easy to search. The first step in a site-built shower pan installation and the first signal to the inspector of whats to comeis the two-part drain assembly. 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. The subbase must slope 1/4 in. The first and most popular because of its affordability and ease of installation is paint-on latex waterproofing. Spread grout across the surface of the tile with the rubber tile float. Can I do the typical 16"o.c. 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. Continuing Education for Architects & Designers. Frame the shower curb. This question is specifically about the subfloor. Note: While the image below shows a wood subfloor, this is also achievable with a concrete subfloor. Of course the (relatively) small increase in price for treated plywood may be worth the peace of mind (are be a backup if water makes it through the floor's water proofer. Generic Doubly-Linked-Lists C implementation. Acrylic shower pans are the least expensive type of pan and can last for about 10 years before there could be a crack or leak. However, if you hear the term shower base, that is the portion that sits below the tray/pan. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Clean the Subfloor. A standard material used for a subfloor is going to be a cut to size plywood, mainly due to its availability. 3. Make sure the surface is at a level. See Recessing the Shower Floor Technical detail here. 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. for 2x6 joists w/ a 40" span under the shower pan? The tile is set in a thin bed of mortar or thinset. Connect and share knowledge within a single location that is structured and easy to search. Therein the new sheathing would not run under the wall and the wall would be now supported by the blocking. What do I do about the Missing Stair Nosing and Short Stair Tread. Afterwards, a shower pan liner is installed on top of the slope bed, flattened and stretched tight across the shower pan and stapled into place roughly 6 inches up the wall studs. 9mm . This may require the services of a qualified design professional (e.g., architect, engineer, etc.). 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. Multifunctional building panels: Schluter-KERDI-BOARD, 4. Install KERDI-LINE adjacent to the wall, or at intermediate locations of your shower floorand then choose the drain grate that best matches your dcor and desired finished look. CTRL + SPACE for auto-complete. Yes, it is important to lay subfloor down before installing a shower pan in the bathroom. There's nothing you can use instead of a shower pan in an enclosed shower. Overlap the edges and roll them tightly. I plan on replacing some studs and sistering others. 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. Bonded waterproofing and vapor-retardant membrane, Waterproof, multifunctional tile substrate and building panel. The KERDI-SHOWER-LT/-LTS sloped shower trays feature integrated waterproofing and are designed to integrate with KERDI-LINE drains. In such a high humidity environment, I'd remove the existing sub-floor and put in pressure treated plywood in the entire room. Making statements based on opinion; back them up with references or personal experience. ANSWER - First of all, the way you construct a shower pan is to first apply a pre-sloped mortar bed to establish a slope to the drain of 1/4" per foot. He spent more than 15 years as a third-generation tile and stone contractor before transitioning into freelance writing. Ideally you would need to cut single, large pieces and screw them into the running boards or concrete slab. 2. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? Measure the shower area to determine the size of the shower pan you need to make. Alternatively, add small amounts of mortar to fill the low spot and repeat the process. Tiling Project Guide. This doubles as an anti-fracture membrane which is painted onto the surface of the concrete with a paintbrush or a paint roller. With the KERDI-SHOWER-TT thin shower tray on a wood subfloor, you can build up the rest of the bathroom floor 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. Synopsis: Code expert Glenn Mathewson explains the details required by code and modern plumbing standards when fabricating a shower pan, including the two-part drain assembly, the subbase material and slope, the curb height, and the liner application. What is this brick with a round back and a stud on the side used for? The top shower pan floor covering is the tile. Spread out thinset with the notched trowel and press the tile into the thinset. higher. With the utility knife, create slits for the four bolts on the shower drain to protrude upward. Mark the top of the coat hanger and withdraw it. It also prompts the verification of solid blocking in the walls surrounding the shower for backing and attaching the liner. Waterproofing strip: Schluter-KERDI-BAND, 6. Premanufactured panels and pans as walk-in showers can be installed directly over the top of the concrete without any concern. 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. Then another layer of deck mud is added on top of the shower pan liner. Install the liner over a pre-sloped bed, as I explain here. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Sign up to our newsletter and get exclusive deals you wont find anywhere else straight to your inbox! The hyperbolic space is a conformally compact Einstein manifold, Counting and finding real solutions of an equation. It's about how it looks and how it feels underfoot. To do this, add a quart of water to the bucket or tub and pour in some of the dry mortar. How thick is shower pan membrane? This may require the services of a qualified design professional (e.g., architect, engineer, etc.). Is it safe to publish research papers in cooperation with Russian academics? It only takes a minute to sign up. The shower tray, available in a range of sizes with thicknesses from 1-21/32" (42 mm) to 2-3/8" (60 mm), eliminates the need for a mortar bed, and is easy to install. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. This means that you will have a steeper slope on the walls closer to the drain. Do I need to apply a waterproofer such as Redgard to the subfloor ply before I apply the thinset to set the Kerdi shower pan? This can be tricky to set up and should be planned for ahead of time when building a curbless shower. 1. Mix it thoroughly with the trowel to remove any clumps. William Machin began work in construction at the age of 15, while still in high school. The hyperbolic space is a conformally compact Einstein manifold. Top-quality cast iron shower pans are very costly yet also very durable and can last for decades. After the sloped subbase is in, the liner can be installed. If total energies differ across different software, how do I decide which software to use? Walk-in showers are large showers that can either be created from scratch or built using premanufactured pans and wall panels sold as kits. Multifunctional building panels: Schluter-KERDI-BOARD, 2. Become a member and get unlimited site access, including the The flange provides a water barrier to prevent water from exiting he shower during normal use, or in case of a "back-up". Premanufactured kit showers may be installed without worry. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. I plan to use blocking, and I suppose I could put 2 pieces of blocking between each joist. Unlike the surface of a concrete slab, wood subfloors may have irregularities or require additional fasteners at the area of a shower. The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. What should I follow, if two altimeters show different altitudes? 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). Would I be better w/ 12" o.c. Wood floors first need to be able to withstand the weight of a custom walk-in shower. How to Attach to a Concrete Ceiling Without Drilling, 12 indoor plants you dont need a green thumb to keep alive, How to Set an Acrylic Shower Pan in Mortar. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? 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. I ripped my old shower down to the studs and joists. Toe-screw 2x4s for straight curbs and cut off the excess hardboard after forming. How do you expect to prevent steam from getting everywhere? But you did not actually answer his question. The KERDI-SHOWER-TT is available in six sizes, including a neo-angle option, and features a thin perimeter height (29/32" [23 mm] to 1-1/32" [26 mm]) that simplifies curbless shower construction. 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. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Cut the piece to length with a handsaw. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Press the material firmly into the silicone on the shower drain. Send us an email: , Using a Prefabricated Shower Tray and Ramp. We also smartly list products and services to help in moving your project along. For curbless showers without such a dam, the floor-level threshold at the opening serves the same purpose. I'm going to be using the Kerdi shower pan and membrane to seal a steam shower. DITRA provides uncoupling to prevent cracked tile and grout. Waterproofing Corners: Schluter-KERDI-KERECK, 1. JavaScript is disabled. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? If you were going to tile the rest of the room, I'd consider adding another sheet of ply, at least 3/8" thick (the thinnest suitable to a second layer with tile) under the whole floor. This includes mud-floated showers. Install a pre-slope. You'll need various materials for a shower pan to build up several layers. One popular way to create a shower pan is to install a pre-fabricated polyurethane or fiberglass pan. Where you have obstructions such as pipes, use one-by-six lumber or use a router to create a groove to accommodate the obstruction. A subfloor is the layer at the very bottom of your shower pan. Resting above the waterproof membrane is a second bed of mortar that generally follows the same contours as the preslope. Follow the Wood Underlayment installation guidelines as found in the Schluter-DITRA or Schluter-DITRA-HEAT Installation Handbooks for fastening guidelines. It is going to be 4 tall or so from the bathroom floor. Over a concrete subfloor use a bonded mortar bed of appropriate thickness to build up the rest of the bathroom floor. Long showers, slow drains, or minor cracks or shrinkage in the grout can allow some water to sneak through the shower floors surface. What does "up to" mean in "is first up to launch"? Like all drains, the intent is for bulk water to drain through the visible drain opening. If the liner doesnt leak for the 15-minute duration of the test, it passes. Use only a little bit of water at a time to maintain a stiff, peanut butter-like consistency. Coat both sides of the seam with the primer or sealer appropriate to the material, covering about 4 inches from the edges. Stand in the base or pan to determine if the subfloor is stable. Build a high border around the perimeter of the shower, about 1/4-inch below the tile top perimeter line. Jan 21, 2021. To learn more, see our tips on writing great answers. Although curbless showers that were originally meant for handicap showers has become more popular and more in demand. What were the most popular text editors for MS-DOS in the 1980s? 1) The metal lath or reinforcement can be placed over a cleavage membrane on top of the subfloor. or 40 mil. 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. Build a high border around the perimeter of the shower, about 1/4-inch below the tile top perimeter line. The best answers are voted up and rise to the top, Not the answer you're looking for? It would always be wise to waterproof the seat in some manner. 1 Answer Sorted by: 2 1/2" is a bit thin to span that distance, although it should not be a problem with a concrete slab above it. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Mix and place the first mortar layer. 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. How to install a shower pan drain with this non-standard drainage pipe? 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. A surprise to many, this means the blocking and studs may need to be shaved down by the thickness of the liner material to accommodate it. Joists I'll likely epoxy and sister before installing new subfloor. thickness, and include a range of dimensions such as: 5 ft. x 6 ft. 6 ft. x 33 ft. 5 ft. x 40 ft. 4 ft. x 50 ft. 5 ft. x 50 ft. 6 ft. x 50 ft. Add the Top Mortar Layer. Where theres no curb at the threshold, as in a curbless design, a temporary curb must be constructed for the leak test. Wearing waterproof gloves, dump the mixed mortar onto the shower floor. 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. 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. Learn more about the essentials of waterproofing. Most homes will consist of a standard subfloor constructed of running boards laid over floor joists, a plywood layer over the running boards, or if on a first floor, the subfloor can be a concrete slab. For professionals it looks easy, but only. Multifunctional building panels: Schluter-KERDI-BOARD, 4. 3 Shower-Pan Choices for a Solid Tile Floor Installation, Video Series: Tile a Barrier-Free Bathroom. because of height issues upstairs I plan to use 2x6 joists. It is important to remember, if you choose a cement backer board, you will need to use the manufacturer recommended backer board screws. 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. Allow mortar to cure overnight before installing the base or pan.
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