subfloor thickness for shower pan

After you have put down a double layer of plywood to provide the base for a custom walk-in shower pan, you need to cover the subfloor with a layer of tar paper, in this case referred to as a vapor barrier or a moisture barrier. We are putting in a shower in our bathroom remodel. For professionals it looks easy, but only. New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition. 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. 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. Various sizes are available to accommodate both center drain and perimeter drain placement. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies. How to Replace Shower Pans in Fiberglass Showers, How to Convert a Tub-Shower Enclosure to a Freestanding Shower, Life of an Architect: How to Build a Shower That Won't Leak, Today's Homeowner: Installing Tile Over a Wood Subfloor, The Floor Elf: How to Create a Shower Floor, Houzz.com: Doorless Showers Open a World of Possibilities, How to clean a showerhead, according to an expert. 3. This site is protected by reCAPTCHA and the Google. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Test fit shower pan drain housing into subfloor bore hole. It's about how it looks and how it feels underfoot. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Use mortar between OSB and old concrete subfloor, in shower? Actually will be basically a fully tiled wet room. Market Research for Exporting to the U.S. Catalina 2021 Ceramic and Stone Tile Market Report, Kitchen and Bath Cabinets Countertops Reports. KERDI-DRAIN features an integrated bonding flange to which the KERDI waterproofing membrane is adhered and forms a waterproof connection at the top of the tile assembly. DITRA is specifically designed for ceramic and stone tile installations. or 40 mil. The first step is to determine the depth of the shower pan. The curb is the open entry point where the user enters the shower. You can now add the rest of the cement boards down to the level of the mortar bed. Increasing subfloor thickness under new shower pan, Installing ceramic tile on top of wooden bathroom floor. This question is specifically about the subfloor. Waterproofing strip: Schluter-KERDI-BAND, 6. Like all drains, the intent is for bulk water to drain through the visible drain opening. Resting above the waterproof membrane is a second bed of mortar that generally follows the same contours as the preslope. Remove the top section of the shower drain by unscrewing or unbolting it. Should I use liquid water proofing membrane over a standard shower mud 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. Due to its thin perimeter height, the KERDI-SHOWER-TT is an ideal choice. because of height issues upstairs I plan to use 2x6 joists. Top-quality cast iron shower pans are very costly yet also very durable and can last for decades. Water that gets into the mortar bed won't be able to drain out. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Once it dries, it creates a waterproof barrier over which you can install the tile. Tim Anderson has been freelance writing since 2007. Required fields are marked *. What is scrcpy OTG mode and how does it work? This means that you will have a steeper slope on the walls closer to the drain. 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. Thanks for contributing an answer to Home Improvement Stack Exchange! 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). Shower pan membrane typically comes in thicknesses from 30 mil (0. The dimensions will be about 40" x 10' (mud shower pan over entire area). 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. 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 ? 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). 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. VASPKIT and SeeK-path recommend different paths. 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. For a seat designed for sitting, that hazard could be argued as bather beware if he chooses to stand on it. The shower pan preslope is a mortar base that creates the general tapered slope for the shower pan. Shower bases must be sloped from all directions to point drains, therefore limiting tile selection to mosaics or other relatively small-format tiles. Therein the new sheathing would not run under the wall and the wall would be now supported by the blocking. What is the difference between a shower tray and a shower pan? Continuing Education for Architects & Designers. 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. A secondary drain, mounted on the waterproof pan under the showers finished floor, drains this water away. 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. If it comes apart, repeat the process. higher. Lay the waterproofing material on the floor of the shower, running it about five inches up each of the walls. We gather the best information, organize it, and make it available to you according to the current stage of your remodeling project. 2. Remove the subfloor material. One popular way to create a shower pan is to install a pre-fabricated polyurethane or fiberglass pan. 4. To do this, add a quart of water to the bucket or tub and pour in some of the dry mortar. 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. Seal the shower liner to 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. With lengths from 20" to 72" (50 cm to 180 cm) in 4" (10 cm) increments, KERDI-LINE can fit virtually any shower design. KERDI-LINE is an elegant, low profile linear floor drain specifically designed for bonded waterproofing assemblies. for 2x6 joists w/ a 40" span under the shower pan? Further, DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. 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. With the liner installed and visible, the next step is the leak test. Later, grout is added to the tile seams. Thus, additional measures must be taken to protect wall cavities from water and vapor penetration. 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. 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. TileTip.com is your premier source for tile information and all the remodeling questions you have before, during, and after the installation. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. Why don't we use the 7805 for car phone chargers? The hyperbolic space is a conformally compact Einstein manifold. Your email address will not be published. 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. The same answer, I presume, is applicable to a dry pack pan as well? Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. In this photo it is (or close enough to) 4 3/4. The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. Add the Top Mortar Layer. 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. No I would not apply water proofer to the subfloor under the shower pan (unless we are going to be waterproofing the entire floor it might be easier to just continue it under the shower pan). See Recessing the Shower Floor Technical detail here. 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. 22K views 1 year ago Installing an acrylic or fiberglass shower pan using a mortar bed increases the strength and longevity of your shower pan. Field-fabricated shower pans (or receptors, as the code refers to them) have been acknowledged by plumbing codes at least as far back as the 1955 Uniform Plumbing code. Learn more about the essentials of waterproofing. 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. 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. 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. Fold the corners into place; do not cut the corner material. I'll be pouring a new concrete shower pan. 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. Premanufactured panels and pans as walk-in showers can be installed directly over the top of the concrete without any concern. 2023 The Taunton Press, Inc. All rights reserved. Wearing waterproof gloves, dump the mixed mortar onto the shower floor. Send us an email: , Using a Prefabricated Shower Tray and Ramp, 1. Donato is the founder of CTaSC. Subfloors provide the necessary support for the shower pan and prevent any shifting, settling, or warping in the future. DO NOT SAND, CUT, OR MAKE ANY CHANGES/MODIFICATIONS TO THE SURFACE OF THE SHOWER PAN WHATSOEVER. It only takes a minute to sign up. Although curbless showers that were originally meant for handicap showers has become more popular and more in demand. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Depending on the size of the shower it doesn't always work, but it saves time if you can work it out that way. Alternatively, add small amounts of mortar to fill the low spot and repeat the process. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. 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. joists where the wall studs are offset from 2 of 3 joists? Remove any residual mortar by hand or with the trowel. in the area of concern. Coat both sides of the seam with the primer or sealer appropriate to the material, covering about 4 inches from the edges. The KERDI-SHOWER-TT shower trays feature integrated KERDI waterproofing and are designed to integrate with the KERDI-DRAIN. There are many resources available regarding the techniques and skills required to assemble a quality site-built shower pan, but they often fall short in explaining the details required by modern plumbing standards. 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). The flange is fusion welded to the perimeter of the shower base's core. While the KERDI membrane is used in the image above, note that KERDI-BOARD multifunctional building panels are also suitable. If the liner doesnt leak for the 15-minute duration of the test, it passes. In most cases, the job is easier with the help of an assistant. 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. His has been published online through GTV Magazine, Home Anatomy, TravBuddy, MMO Hub, Killer Guides and the Delegate2 group. 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. 2 inches of shower pan is not excessive if its an old school dry pack with a Pre slope. Allow the mortar to cure overnight and proceed to the next step. Use either Quikrete Floor Mud or Quikrete Sand/Topping Mix for the job. Cut the piece to length with a handsaw. Make sure the shower pan is aligned . KERDI-DRAIN grates are available in four stylish designs and multiple finishes. 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. First by hand, then with the trowel, spread the mortar around the base, mounding it higher around the edges. 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. Would I be better w/ 12" o.c. Which language's style guidelines should be used when writing code that is supposed to be called from another language? Three sides of the shower pan are bounded by shower walls. They can easily be cut to size with a utility knife, or may be extended with dry-pack mortar. It would always be wise to waterproof the seat in some manner. 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. Mark the top of the coat hanger and withdraw it. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I'm going to be using the Kerdi shower pan and membrane to seal a steam shower. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA.

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