subfloor thickness for shower pan
It is important to remember, if you choose a cement backer board, you will need to use the manufacturer recommended backer board screws. The curb is the open entry point where the user enters the shower. KERDI-BOARD can be installed both vertically and horizontally using the screws and washers in our hardware assortment. The Fora platform includes forum software by XenForo. Note: While the image below shows a wood subfloor, this is also achievable with a concrete subfloor. For curbless showers without such a dam, the floor-level threshold at the opening serves the same purpose. joists where the wall studs are offset from 2 of 3 joists? It is where visible water will escape and limit the rise of water up the walls. A fully waterproof assembly is easily achieved by sealing seams and fastener penetrations with KERDI-BAND. It will never come into contact with the pan liner. 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? I've never heard of doing this. In the mixing tray, mix the mortar with water, using a garden hoe. TileTip.com is your premier source for tile information and all the remodeling questions you have before, during, and after the installation. Spread grout across the surface of the tile with the rubber tile float. 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. Stand in the base or pan to determine if the subfloor is stable. 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. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 4. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? Are you implying you would use pressure treated wood in the subfloor and not redgard it? See technical detail for how. If the subfloor is not flat and level, apply a self-leveling compound following the . DITRA is specifically designed for ceramic and stone tile installations. What is the final thickness of a DIY shower pan? Allow mortar to cure overnight before installing the base or pan. Why don't we use the 7805 for car phone chargers? Its strong. This video shows you one way to set the. If you're creating a custom walk-in shower, you must put down a layer of what is known as the deck mud, which is a 2- to 3-inch thick layer of concrete. 2 and 3 outlets are available making it simple to connect to standard plumbing. Check the subfloor area from left to right and from front to back to make sure it's level. I plan to use blocking, and I suppose I could put 2 pieces of blocking between each joist. 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. The best answers are voted up and rise to the top, Not the answer you're looking for? The trays can easily be cut to size with a utility knife, or they may be extended with dry-pack mortar. 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. Note: While the image below shows a concrete subfloor, this is also achievable with a wood subfloor. Measure from the liner to the top of the 2 x 4. There is no difference between a shower tray and a shower pan. Remove the top section of the shower drain by unscrewing or unbolting it. The base of a DIY shower pan needs to be about 2 to 3 inches thick at the edges before the tile is added. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. The entire shower will be done with Kerdi. Install the shower liner. Add the Top Mortar Layer. All trays feature integrated KERDI waterproofing and are available in several sizes to fit a variety of shower configurations. Required fields are marked *. Wearing waterproof gloves, dump the mixed mortar onto the shower floor. In 35 years, he's gained expertise in all phases of residential construction, retrofit and remodeling. 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. Because of this, hand-fabricating shower pans can increase the chance of failure, and code provisions generally address two hazards: leaks and sanitation. Follow the Wood Underlayment installation guidelines as found in the Schluter-DITRA or Schluter-DITRA-HEAT Installation Handbooks for fastening guidelines. Waterproofing Corners: Schluter-KERDI-KERECK, 1. With the utility knife, create slits for the four bolts on the shower drain to protrude upward. How thick is shower pan membrane? Subfloors provide the necessary support for the shower pan and prevent any shifting, settling, or warping in the future. His has been published online through GTV Magazine, Home Anatomy, TravBuddy, MMO Hub, Killer Guides and the Delegate2 group. Increasing subfloor thickness under new shower pan, Installing ceramic tile on top of wooden bathroom floor. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Test fit shower pan drain housing into subfloor bore hole. in the area of concern. Frame the shower curb. If it leaks, it fails. The nominal 5/16 (8mm) thickness minimizes tile assembly thickness. With the KERDI-LINE linear drain, the floor is sloped on a single plane which allows the use of large-format tile. What were the most popular text editors for MS-DOS in the 1980s? Counting and finding real solutions of an equation. In order to pull this off I would need to add joists that line up with the dimensions of the shower. You can also use a membrane system, which come in a variety of formats and are either self-adhering or meant to be installed with thinset mortar over the top of the concrete slab. 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. 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. Resting above the waterproof membrane is a second bed of mortar that generally follows the same contours as the preslope. If you cannot or do not wish to recess the floor or use a ramp, the use of additional materials to raise the bathroom floor is another option. He studied architecture at Taft Junior College. 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Where theres no curb at the threshold, as in a curbless design, a temporary curb must be constructed for the leak test. Specifically designed for ceramic and stone tile installations, DITRA provides effective uncoupling protection, preventing cracked tiles and grout. Fold the corners into place; do not cut the corner material. It's about how it looks and how it feels underfoot. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies. 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. 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. We have to step up to go in shower!!! The liner is a PVC or other polymer membrane that rests on top of the preslope. This slope is later refined with a second bed of mortar. Shower pan membrane typically comes in thicknesses from 30 mil (0. 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. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. 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. 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. Before the liner is installed, a solid subbase must be installed to create a smooth and uniform slope to the drain. Use tape and plastic to cover up the shower drain so that the mortar and other debris will not clog it. Alternatively, you can choose to install a cement backer board as your subfloor or as an addition for support and structure. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? per ft. toward the drain from all portions of the pan. After 5 minutes, try to separate the seam. Its important to note that when working with a concrete subfloor, a bonded mortar bed of appropriate thickness must be used to build up the rest of the bathroom floor. The curb is between two inches and six inches above the level of the shower drain. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Depending on the size of the shower it doesn't always work, but it saves time if you can work it out that way. 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. It would always be wise to waterproof the seat in some manner. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. 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). Prefabricated shower tray: Schluter-KERDI-SHOWER-T/-TS/-TT, 3. 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. But you did not actually answer his question. Prepare shower pan for the first mortar layer. 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. Determine whether the floor needs to be leveled and mark the floor at the low spots. Actually will be basically a fully tiled wet room. Waterproofing membrane and vapor retarder: Schluter-KERDI, 4. 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. DITRA is a polyethylene membrane with a grid structure of square cavities, each cut back in a dovetail configuration, and an anchoring fleece laminated to the underside. I ripped my old shower down to the studs and joists. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. 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. Upstairs shower pan on floor that bounces slightly. He spent more than 15 years as a third-generation tile and stone contractor before transitioning into freelance writing. 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. Made of polyethylene, DITRA also serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. Hammer down any protruding nails used to fasten the subfloor to the floor joists below. Like all drains, the intent is for bulk water to drain through the visible drain opening. or 40 mil. Remove debris at the area of the subfloor where the shower pan installs, using a shop vacuum. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Tiling Project Guide. The liner itself must be recessed into its backing so as not to occupy the space required for the wall covering. In other words, the face of the liner should be flush with the face of the studs so the wall covering can be installed flat to the wall. 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. I'll be pouring a new concrete shower pan. per ft. toward weep holes in the subdrain. This may require the services of a qualified design professional (e.g., architect, engineer, etc.). 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. 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. 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). KERDI-LINE is an elegant, low profile linear floor drain specifically designed for bonded waterproofing assemblies. Cut two-by-six lumber to fit between the studs of the shower stall. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. 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. Market Research for Exporting to the U.S. Catalina 2021 Ceramic and Stone Tile Market Report, Kitchen and Bath Cabinets Countertops Reports. higher. 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. common sense would dictate that the same minimum 1/4-in-12 slope is critical to keep bulk water moving. Connect and share knowledge within a single location that is structured and easy to search. 3. 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. They can easily be cut to size with a utility knife, or may be extended with dry-pack mortar. Contact us: 888-472-4588 Build a high border around the perimeter of the shower, about 1/4-inch below the tile top perimeter line. I'm going to be using the Kerdi shower pan and membrane to seal a steam shower. 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. Hassle with 5/8" first layer, especially with OSB, is that it's very easy to strip the hole with the screw. Thanks for contributing an answer to Home Improvement Stack Exchange!
