subfloor thickness for shower pan

The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. The first step is to determine the depth of the shower pan. Contact us: 888-472-4588 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 best answers are voted up and rise to the top, Not the answer you're looking for? TileTip.com is your premier source for tile information and all the remodeling questions you have before, during, and after the installation. per ft. toward weep holes in the subdrain. The same answer, I presume, is applicable to a dry pack pan as well? 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. rev2023.4.21.43403. Install the liner over the preslope & wrapping the curb, extending a minimum of 6" up the wall. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? With a screw gun, install 2-inch deck screws alongside each existing nail or screw to securely fasten the subfloor to the joists. How to Install a Shower or Tub Faucet. To learn more, see our tips on writing great answers. This is especially true when remodeling at an existing subfloor. 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. If the subfloor is not flat and level, apply a self-leveling compound following the . 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. 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. For curbless showers without such a dam, the floor-level threshold at the opening serves the same purpose. Is there any way to alleviate the movement from the hangers? The entire room will be wrapped in Kerdi; walls, floor, ceiling Should I apply waterproofer on the subfloor beneath a shower pan? With the trowel, taper down the mortar to the shower drain. The KERDI-SHOWER-LT/-LTS sloped shower trays feature integrated waterproofing and are designed to integrate with KERDI-LINE drains. Asking for help, clarification, or responding to other answers. What is the difference between a shower tray and a shower 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. 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. 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. Which language's style guidelines should be used when writing code that is supposed to be called from another language? 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. 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. 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. This liner is the last line of defense between water and the subfloor. Using Tile To Create a Custom Shower Floor in Your Bathroom. With the trowel, taper down the mortar to the shower drain. Wearing waterproof gloves, dump the mixed mortar onto the shower floor. 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. 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. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. >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. Premanufactured kit showers may be installed without worry. The dimensions will be about 40" x 10' (mud shower pan over entire area). Before the liner is installed, a solid subbase must be installed to create a smooth and uniform slope to the drain. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Did the drapes in old theatres actually say "ASBESTOS" on them? Thanks for contributing an answer to Home Improvement Stack Exchange! Install Subfloor Prefabricated shower tray: Schluter-KERDI-SHOWER-T/-TS/-TT, 3. Made of polyethylene, DITRA also serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. 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. KERDI-LINE is an elegant, low profile linear floor drain specifically designed for bonded waterproofing assemblies. The shower pan should be slightly larger than the drain assembly. 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. Uncoupling membrane for DITRA-HEAT-E-HK electric floor heating cables, Uncoupling membrane with integrated sound control and thermal break. Cut out the hole for the shower drain. 2. While cement backer boards are moisture-resistant, they are not waterproof. 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. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Use tape and plastic to cover up the shower drain so that the mortar and other debris will not clog it. Remove the top section of the shower drain by unscrewing or unbolting it. Learn more about Stack Overflow the company, and our products. Shower basins are called pans, floors, or receptors. Quikrete makes two products that work well when building DIY shower pans. Did the Golden Gate Bridge 'flatten' under the weight of 300,000 people in 1987? The question of whether the code requires a similar liner over shower seats often comes up, but the IRC offers no guidance here. Frame out shower stall area to shower pan dimensions. Apply some mixed mortar at the marked area of a low spot on the subfloor. Continuing Education for Architects & Designers. Install the shower wall tile backer board and place the top mortar bed. The system can also be customized with floor heating cables to create a warm, luxurious tile floor. Connect and share knowledge within a single location that is structured and easy to search. Tiling Project Guide. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. A standard material used for a subfloor is going to be a cut to size plywood, mainly due to its availability. 4. Layers of a shower pan. 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. First, am I correct in determining 1/2" as not enough support ? 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 Fora platform includes forum software by XenForo. 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. 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. 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 product, the liner must extend at least 2 in. By clicking Accept All Cookies, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. What do I do about the Missing Stair Nosing and Short Stair Tread. The preslope is laid on tar paper. I've never heard of doing this. 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. In order to pull this off I would need to add joists that line up with the dimensions of the shower. Jan 21, 2021. See technical detail for how. Let the primer dry. Seems like 2-3 inches. Though you can make your own shower pan, our experts say this project is best left to professionals and experienced tile setters. Stand in the base or pan to determine if the subfloor is stable. 4. A secondary drain, mounted on the waterproof pan under the showers finished floor, drains this water away. 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. The hyperbolic space is a conformally compact Einstein manifold. 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. Nail the top of the waterproof material to the studs to prevent it from falling. Actually will be basically a fully tiled wet room. All shower trays feature integrated KERDI waterproofing and are designed specifically to integrate with the KERDI-DRAIN. Wood floors first need to be able to withstand the weight of a custom walk-in shower. Install a pre-slope. 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. 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. How thick should the Mortar Bed for a Shower Pan Floor in a Shower? The KERDI-SHOWER-TT shower trays feature integrated KERDI waterproofing and are designed to integrate with the KERDI-DRAIN. Specifically designed for ceramic and stone tile installations, the family of DITRA products provides effective uncoupling protection, preventing cracked tiles and grout. or 40 mil. Because of this, hand-fabricating shower pans can increase the chance of failure, and code provisions generally address two hazards: leaks and sanitation. We have to step up to go in shower!!! It's about how it looks and how it feels underfoot. Remove any residual mortar by hand or with the trowel . 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. 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. Premanufactured panels and pans as walk-in showers can be installed directly over the top of the concrete without any concern. 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. 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. The flange is a 1/8" thick, 5" high FRP composite MATERIAL that is designed to rise between the stud wall and the showers backer wall. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Waterproofing corners Schluter-KERDI-KERECK, 1. What is Post-Tensioned Concrete and Can I Install Tile Over it? Once it dries, it creates a waterproof barrier over which you can install the tile. Later, grout is added to the tile seams. This means that you will have a steeper slope on the walls closer to the drain. Save my name, email, and website in this browser for the next time I comment. Depending on the subfloor material, you will need to ensure it is sturdy enough to support the weight of a built up shower pan. Measuring it at that point. It is going to be 4 tall or so from the bathroom floor. Build a high border around the perimeter of the shower, about 1/4-inch below the tile top perimeter line. 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? Prefabricated sloped shower tray: Schluter-KERDI-SHOWER-LTS, 3. 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. tar command with and without --absolute-names option, Embedded hyperlinks in a thesis or research paper. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. His hobbies include horses, motorcycles, road racing and sport fishing. If the liner doesnt leak for the 15-minute duration of the test, it passes. Bases come in a variety of materials, from acrylic, molded stone, and fiberglass. DITRA is specifically designed for ceramic and stone tile installations. Prepare subfloor and drain plumbing. 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). This may require the services of a qualified design professional (e.g., architect, engineer, etc.). Making statements based on opinion; back them up with references or personal experience. 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. Seal the shower liner to the shower drain. But these drains go a step further. 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. Your email address will not be published. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. I understand the process of installing the membrane, deck and preparing the wall and ceiling substrate. 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. KERDI-BAND is only 4 one-thousands of an inch (4 mil)-thick, half the thickness of KERDI thus limiting buildup, and ensuring a smooth surface for tile installation.. Waterproofing strip seals abutting joints of membranes and building panels. Allow the mortar to cure overnight and proceed to the next step. 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. But remember, the code is a minimum standard and not a measure of fine home building. Counting and finding real solutions of an equation. Profile that forms a splashguard in curbless showers. 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. Prepare the Subfloor. Make sure the surface is at a level. Unless you waterproof the entire room floor, walls, and ceiling, steam induced moisture is going to penetrate SOMEWHERE to wood. In the mixing tray, mix the mortar with water, using a garden hoe. Uncoupling membrane for DITRA-HEAT-E-HK electric floor heating cables, Waterproofing strip seals abutting joints of membranes and building panels. DITRA provides uncoupling to prevent cracked tile and grout. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. The curb is between two inches and six inches above the level of the shower drain. 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. There's nothing you can use instead of a shower pan in an enclosed shower. higher. A typical walk-in shower built on the first floor of a home will be able to rest its weight on the joists without concern. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. Overlap the edges and roll them tightly. Run a thin bead of silicone around the perimeter of the drain. Why don't we use the 7805 for car phone chargers? What is this brick with a round back and a stud on the side used for? Trusted, comprehensive guidance from the pros for a great-looking tile job in any room of the house. This question is specifically about the subfloor. Mix and place 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. 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. 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. Use a reciprocating saw to cut the wood, and pull out any nails securing the material with a hammer or pry bar. Walk-in showers are large showers that can either be created from scratch or built using premanufactured pans and wall panels sold as kits. If it leaks, it fails. 3. The shower pan preslope is a mortar base that creates the general tapered slope for the shower pan. The entire bottom of the shower pan needs to sit on a flat, level surface. With lengths from 20" to 72" (50 cm to 180 cm) in 4" (10 cm) increments, KERDI-LINE can fit virtually any shower design. Due to its thin perimeter height, the KERDI-SHOWER-TT is an ideal choice. With the rest of the shower drain temporarily in place, draw a pencil or chalk line around the perimeter of the walls to add a reference line, which represents the top of the tile. U.S. Tile Consumption Increased in Q3 2022, Despite Rising Prices. 9mm . * Recessing the floor of a shower must be done in a way that preserves the structural integrity and safety of the construction. Long showers, slow drains, or minor cracks or shrinkage in the grout can allow some water to sneak through the shower floors surface. 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. 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. Waterproofing strip: Schluter-KERDI-BAND, 6. After 5 minutes, try to separate the seam. common sense would dictate that the same minimum 1/4-in-12 slope is critical to keep bulk water moving. Toe-screw 2x4s for straight curbs and cut off the excess hardboard after forming. The only time you won't need a pan is if you have a fully tiled wet room space without a shower enclosure. Based on the comments to this answer, updated answer: Since you're waterproofing the entire room, its not essential. Using KERDI-BOARD to build walls over stud framing in wet areas is an efficient alternative to using gypsum board. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Prepare shower pan for the first mortar layer. 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. Hammer down any protruding nails used to fasten the subfloor to the floor joists below. 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. 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. Are you implying you would use pressure treated wood in the subfloor and not redgard it? Which one to choose? A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. The system can also be customized with floor heating cables to create a warm, luxurious tile floor. 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.

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