The liner is a PVC or other polymer membrane that rests on top of the preslope. Remove the subfloor material. For a better experience, please enable JavaScript in your browser before proceeding. Build a high border around the perimeter of the shower, about 1/4-inch below the tile top perimeter line. 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. On what basis are pardoning decisions made by presidents or governors when exercising their pardoning power? Prepare subfloor and drain plumbing. His hobbies include horses, motorcycles, road racing and sport fishing. for 2x6 joists w/ a 40" span under the shower pan? If you're planning to install a shower base or manufactured shower pan on a subfloor, it's necessary to make sure the pan will be level and stable. Its strong. 3 Shower-Pan Choices for a Solid Tile Floor Installation, Video Series: Tile a Barrier-Free Bathroom. Actually will be basically a fully tiled wet room. With a screw gun, install 2-inch deck screws alongside each existing nail or screw to securely fasten the subfloor to the joists. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. 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. Made of polyethylene, DITRA also serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. If total energies differ across different software, how do I decide which software to use? Although curbless showers that were originally meant for handicap showers has become more popular and more in demand. Can I do the typical 16"o.c. The top shower pan floor covering is the tile. I'm going to be using the Kerdi shower pan and membrane to seal a steam shower. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. What do I do about the Missing Stair Nosing and Short Stair Tread. Bonded waterproofing and vapor-retardant membrane, Waterproof, multifunctional tile substrate and building panel. The curb is the open entry point where the user enters the shower. 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. This must be tight to the floor & walls, and be continuous; the corners can't have any holes, the curb can't have any holes. 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. It will never come into contact with the pan liner. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? Spread grout across the surface of the tile with the rubber tile float. In such a high humidity environment, I'd remove the existing sub-floor and put in pressure treated plywood in the entire room. . 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. Yes, it is important to lay subfloor down before installing a shower pan in the bathroom. Why did US v. Assange skip the court of appeal? While cement backer boards are moisture-resistant, they are not waterproof. We also smartly list products and services to help in moving your project along. The flange is fusion welded to the perimeter of the shower base's core. When an inspector shows up to do the rough-plumbing inspection and sees a two-part drain in place, it triggers a future inspection that not every house receives: a shower-liner inspection, detailed in section P2503.6 of the IRc. In order to pull this off I would need to add joists that line up with the dimensions of the shower. With the trowel, taper down the mortar to the shower drain. KERDI-BOARD can be installed both vertically and horizontally using the screws and washers in our hardware assortment. 1) The metal lath or reinforcement can be placed over a cleavage membrane on top of the subfloor. You'll need various materials for a shower pan to build up several layers. Use tape and plastic to cover up the shower drain so that the mortar and other debris will not clog it. You then need to make that mark at the same height all the way around the perimeter of your shower walls (figure 2). 75mm) up to 75 mil (1. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. 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. The lower area of the shower walls should be open, with no cement boards in place yet. Is there any way to alleviate the movement from the hangers? 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. 4. 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. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Ideally you would need to cut single, large pieces and screw them into the running boards or concrete slab. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Alternative, proprietary products are also popular and can be approved locally. KERDI-BOARD, a multifunctional waterproof building panel, gives you more control over your tile installation project by providing you with the means to simply and easily create ideal substrates for tile. Made of polyethylene, DITRA also serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. Thanks for contributing an answer to Home Improvement Stack Exchange! Blocking allows you to run the waterproofing material up the sides of the shower, which creates the DIY shower pan liner. Place the level across the pan or base to determine if it is level both ways. Start your subscription today and save up to 70%. Curbs must be at least 2 in. Asking for help, clarification, or responding to other answers. Install the Subfloor. The modal window is a 'site map' of the most critical areas of the site. Which was the first Sci-Fi story to predict obnoxious "robo calls"? You should end up with material leading to the edge of your framed walls and shower curb. Then another layer of deck mud is added on top of the shower pan liner. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. rev2023.4.21.43403. Prepare shower pan for the first mortar layer. Determine whether the floor needs to be leveled and mark the floor at the low spots. Save my name, email, and website in this browser for the next time I comment. Has the Melford Hall manuscript poem "Whoso terms love a fire" been attributed to any poetDonne, Roe, or other? Allow the mortar to cure overnight and proceed to the next step. 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. The base of a DIY shower pan needs to be about 2 to 3 inches thick at the edges before the tile is added. Is it safe to publish research papers in cooperation with Russian academics? Prefabricated shower tray: Schluter-KERDI-SHOWER-T/-TS/-TT, 3. CTRL + SPACE for auto-complete. Once the moisture barrier is in place, a layer of wire mesh or chicken wire is put down and stapled to the subfloor. The first step is to determine the depth of the shower pan. 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. If the subfloor is completely flat and level, proceed to step 3. 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. Using Tile To Create a Custom Shower Floor in Your Bathroom. This means that you will have a steeper slope on the walls closer to the drain. Frame the shower curb. Counting and finding real solutions of an equation. Make sure the shower pan is aligned . This can be tricky to set up and should be planned for ahead of time when building a curbless shower. DO NOT SAND, CUT, OR MAKE ANY CHANGES/MODIFICATIONS TO THE SURFACE OF THE SHOWER PAN WHATSOEVER. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What differentiates living as mere roommates from living in a marriage-like relationship? One popular way to create a shower pan is to install a pre-fabricated polyurethane or fiberglass pan. Due to its thin perimeter height, the KERDI-SHOWER-TT is an ideal choice. or 40 mil. Hassle with 5/8" first layer, especially with OSB, is that it's very easy to strip the hole with the screw. I am putting in a whole new floor, joist and all, and the span is the 40". Did the drapes in old theatres actually say "ASBESTOS" on them? 3. 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. This blocking or backing often isnt easily visible once the liner is installed. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? 4. Lay the waterproofing material on the floor of the shower, running it about five inches up each of the walls. Learn more about Stack Overflow the company, and our products. To learn more, see our tips on writing great answers. 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. Toe-screw 2x4s for straight curbs and cut off the excess hardboard after forming. Is it safe to publish research papers in cooperation with Russian academics? While the 1955 code permitted site-built pans only in special cases where the installation of a premade pan was demonstrably impractical, such pans are now common and have their own provision in section P2709 of the IRc. 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. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? The issue is that the previous subfloor was 1/2" ply over joists 17 1/2" OC - by my research, not enough support. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. 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. The curb is between two inches and six inches above the level of the shower drain. Uncoupling and waterproofing membrane: Schluter-DITRA. Why typically people don't use biases in attention mechanism? Subfloors provide the necessary support for the shower pan and prevent any shifting, settling, or warping in the future. tar command with and without --absolute-names option. However, if you are building a second story walk-in shower that is larger than 4 feet square, you should contact a structural engineer to make sure the second-story joists can handle the weight of the add-on and what shoring (if any) needs to be done. Should I use liquid water proofing membrane over a standard shower mud pan? Therein the new sheathing would not run under the wall and the wall would be now supported by the blocking. The best answers are voted up and rise to the top, Not the answer you're looking for? You can float over a concrete substrate or nail on metal lath over a wood subfloor. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. JavaScript is disabled. Your email address will not be published. How do you expect to prevent steam from getting everywhere? per ft. toward weep holes in the subdrain. The primary objective is to support the weight of the built up shower pan and provide a durable subfloor in the event of the natural processes of home settling and seismic movements. It is normal to have a shower curb/dam. Stand in the base or pan to determine if the subfloor is stable. Hardwood Flooring. Send us an email: , Using a Prefabricated Shower Tray and Ramp, 1. However, shower bases can be sloped on a single plane to a linear drain, enabling the use of attractive large-format tiles. Whatever the product, the liner must extend at least 2 in. 3. The tileable covering support is placed flush with the top of the bonding flange and can therefore accommodate any thickness tile covering. in the area of concern. Fasten it down with roofing nails or staples. Before the liner is installed, a solid subbase must be installed to create a smooth and uniform slope to the drain. I beefed up all the supports. Quikrete makes two products that work well when building DIY shower pans. First, am I correct in determining 1/2" as not enough support ? The trays can easily be cut to size with a utility knife, or they may be extended with dry-pack mortar. *Recessing the floor of a shower must be done in a way that preserves the structural integrity and safety of the construction. Write CSS OR LESS and hit save. Use either Quikrete Floor Mud or Quikrete Sand/Topping Mix for the job. This provides the bonding element for the concrete and gives it something to hold onto. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. 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. Place a 3-foot level on the floor facing from right to left, and again facing from front to back at the area of the pan. 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. One side will be resting on a wall, the other side the joists will be hung. 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. 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. Depending on the subfloor material, you will need to ensure it is sturdy enough to support the weight of a built up shower pan. Johnathan C. Brewer II is a licensed general contractor specializing in kitchen, bath remodels, and general constructionwith two decades of professional experience. What is the difference between a shower tray and a shower pan? If the shower pan is done properly, I shouldn't expect water to get into the subfloor. otherwise I'd be in big trouble (even if it was treated). above the finished threshold, whether its at the floor level or on a raised curb. There is no difference between a shower tray and a shower pan. I'll be pouring a new concrete shower pan. This is a dialog window which overlays the main content of the page. 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. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. All trays feature integrated KERDI waterproofing and are available in several sizes to fit a variety of shower configurations. Get home building tips, offers, and expert advice in your inbox. 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. 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. Connect and share knowledge within a single location that is structured and easy to search. Remove any dampness or debris on the . Where theres no curb at the threshold, as in a curbless design, a temporary curb must be constructed for the leak test. Test fit shower pan drain housing into subfloor bore hole. Mark a piece of 1-by-4 pine or fir as a leveling rod for the mortar, using the 3-foot level. Connect and share knowledge within a single location that is structured and easy to search. Continuing Education for Architects & Designers. First by hand, then with the trowel, spread the mortar around the base, mounding it higher around the edges. This secondary layer can be added on top of the running boards or concrete slab. This only applies to mud-floated showers. And if the pan isnt properly sloped to carry water to the drain, water standing in the pan can become a petri dish of bacteria and possibly a slipping hazard. The hyperbolic space is a conformally compact Einstein manifold. 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. Though few enjoy being tested, leak tests should be low-stress occasions because the installer has the answer key. Check the subfloor area from left to right and from front to back to make sure it's level. 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. Uncoupling and waterproofing membrane: Schluter-DITRA, 5. I've never heard of doing this. William Machin began work in construction at the age of 15, while still in high school. Overlap the edges and roll them tightly. Cut and lay down the tar paper on the floor of the shower. common sense would dictate that the same minimum 1/4-in-12 slope is critical to keep bulk water moving. 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. It is important to remember, if you choose a cement backer board, you will need to use the manufacturer recommended backer board screws. Let the tile fully cure. Toe-screw 24 blocks to the subfloor every 12 inches and 1/2 inch away from the line to allow for the thickness of the hardboard siding. Cut the piece to length with a handsaw. 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. Measure from the liner to the top of the 2 x 4. How to Install a Shower or Tub Faucet. Made of soft polyethylene and featuring an anchoring fleece on both sides, KERDI is easily anchored to the substrate using thin-set mortar. 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 dimensions will be about 40" x 10' (mud shower pan over entire area). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Seal the shower liner to the shower drain. Place a full sheet of plywood onto the joists with the 48-inch end against the edge of the cutout where a floor joist runs below the edge. 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? because of height issues upstairs I plan to use 2x6 joists. Remove any residual mortar by hand or with the trowel. What is Post-Tensioned Concrete and Can I Install Tile Over it? KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder that is fitted between the tile and tile substrate (gypsum, cement board, etc.). Helping You to Do It Yourself! Specifically designed for ceramic and stone tile installations, the family of DITRA products provides effective uncoupling protection, preventing cracked tiles and grout. Over a concrete subfloor use a bonded mortar bed of appropriate thickness to build up the rest of the bathroom floor. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. A standard material used for a subfloor is going to be a cut to size plywood, mainly due to its availability. 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. Become a member and get unlimited site access, including the 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. Run a thin bead of silicone around the perimeter of the drain. With the utility knife, create slits for the four bolts on the shower drain to protrude upward. Waterproofing strip: Schluter-KERDI-BAND, 5. 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. 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. The KERDI-SHOWER-LT accommodates the KERDI-LINE drain at intermediate locations and is also offered in a selection of sizes with thicknesses ranging from 1-1/4" (32 mm) to 1-7/16 (36 mm). Mix a batch of skimming mortar in a bucket or mixing tub, using fresh water and a wooden trowel. Multifunctional building panels: Schluter-KERDI-BOARD, 4. One side will be resting on a wall, the other side the joists will be hung using strong-ties or the like. Which one to choose? Waterproofing membrane and vapor retarder: Schluter-KERDI, 4. Thus, additional measures must be taken to protect wall cavities from water and vapor penetration. After 5 minutes, try to separate the seam. 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. Waterproofing corners Schluter-KERDI-KERECK, 1. What is the final thickness of a DIY shower pan? DO NOT NAIL OR SCREW ANYTHING INTO THE PAN. Uncoupling and waterproofing membrane: Schluter-DITRA, 5. 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. Upstairs shower pan on floor that bounces slightly. KERDI-DRAIN features an integrated bonding flange that provides a large contact area for adhering the KERDI waterproofing membrane and creating a secure waterproof connection at the top of the drain assembly. Alternatively, add small amounts of mortar to fill the low spot and repeat the process. I understand the process of installing the membrane, deck and preparing the wall and ceiling substrate. Frame out shower stall area to shower pan dimensions. With the flat trowel, taper down the mortar towards the shower drain. The hyperbolic space is a conformally compact Einstein manifold, Counting and finding real solutions of an equation. He spent more than 15 years as a third-generation tile and stone contractor before transitioning into freelance writing. DITRA is specifically designed for ceramic and stone tile installations. Use the scrap two-by-four to help estimate the slope from the walls down to the shower drain. Use a reciprocating saw to cut the wood, and pull out any nails securing the material with a hammer or pry bar. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. If you use the DITRA and cover the seems that should be waterproof so there really should not be moisture getting to the subfloor. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. All shower trays feature integrated KERDI waterproofing and are designed specifically to integrate with the KERDI-DRAIN. Required fields are marked *. Later, grout is added to the tile seams. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies.

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