Kerdi Membrane Over Hardibacker, You lay the Kerdi membrane first and then tile or stone over it and you’ll have a watertight setup. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. Because of the simplicity of the Schluter Kerdi… A crash course in tile shower waterproofing systems including Schluter Kerdi, Redgard, Wedi, Hydroban, and GoBoard foam backer boards Made by Schluter, the Kerdi shower installation kit comprises essential components needed to fully waterproof a shower system. Kerdi board is easy to waterproof after its installed. I have to use something, and the long side of the tub is exterior wall. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. We ended up sponging the Hardi and wetting and booking the Kerdi (a la wallpaper), and that made the installation go much smoother. Also, we're… Of course, the main purpose of both cement board and Kerdi board is to function as a tile underlayment. If you’re planning a bathroom renovation or building a new shower, you may wonder which type of backer board to use: the Kerdi board or cement board. One is the cost and two the availability in my areait's stock at my Menards. The Schluter®-KERDI-DRAIN and Schluter®- KERDI-LINE provide a simple and secure connection to the KERDI membrane at the top of the assembly. If you're remodeling a bathroom and need help, join our Video Library of over 350 step-by-step tutorials at https Hi-- Has anyone else had problems installing kerdi membrane over hardibacker in a shower stall? Even with wetting the hardibacker first, the unmodified thin-set mortar seems to dry so quickly that it is hard to get a good bond. What do you do with the seams in between Durock, Permabase, Hardiebacker, and Wonderboard? For a tile surround over a tub or tile walls over a pre-formed acrylic and fiberglass shower pan both are probably equally effective. Tried to install it over the hardi backer today with unmodified thinset and a 3/16 v-notched trowel as recomended by my supplier. Hello! Thanks in advance. Foam Backer Board types For starters, while there is only one general foam backer board type, there are several hybrid cement backer board types. Schluter®-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Installing Hardiebacker Hydrodefense. For a shower surround, you'd want to waterproof all the joints and all the screw penetrations, anywhere the surface coating is not continuous. Both have advantages and disadvantages, so it’s essential to understand their differences before deciding. With cement board as a substrate, the key is to ensure proper installation of the membrane. Here's why: anybody can install it!!! Plus, it's backed by a great warranty. For instance, in this kit, you will get a shower tray, curb, and the popular Kerdi waterproofing membrane. Since the existing wall board will be removed, I'd prefer to go a litt I was thinking Kerdi board would be better in case of a leak. I am wanting to know how to treat the Kerdi shower pan and how to properly join it where it meets the Hardibacker and changes plane. Jan 22, 2022 · Plain hardiebacker is not waterproof. I am doing foam backer board and would like to do a mud shower pan vs the foam pre sloped. When installing Schluter Kerdi Membrane over cement backerboard: Should I use Alkali Resistant Mesh Tape and thinset on the seams of the backer board (for long term durability to prevent each board If you have some mechanical aptitude, you could forgo the foam pan altogether, and just use deck mud the desired depth to build your pan, then put Kerdi membrane over it. Yes, you can put Kerdi membrane over cement board. As mentioned earlier, the Kerdi membrane is used in the installation of tile and stone on floors. In the end, your shower renovation… Searching for a stay close to what you want to see and do doesn’t have to be hard. It helps to moisten the backer first. or use in niches. Will be replacing tub shower combination with tiled shower in my home. Mesh tape and tile backerboard seams. I've been working on rebuilding the shower and have put up "XPS Foam Waterproof Backer Board Underlayment for Wall Tile" and am planning to also put the "Kerdi Waterproofing Membrane" over top the backer board for waterproofing. I am planning to put an Aquadefense membrane on the hardibacker cement walls. My shower floor area is 48 x 60 inches; Schluter doesn't make floor pan this size, but Wedi does, so I plan to use Wedi pan. Instead of adhesive, you use unmodified thin set mortar. Paint on membranes can also be used, such as RedGuard or AquaDefense. Kerdi Membrane Installation is typically the first step in the Schluter Kerdi Shower Kit System installation process. . Now, both are commonly used in kitchens, bathrooms, and for regular tile floor underlayment, although Kerdi board has become more popular as the years have gone on, which is due to the many advantages it has over cement board. Both may be effective substrates, but Kerdi Board boasts significant advantages. Modified thin-set mortars must dry for the polymers to coalesce and form a hard film in order to gain strength. Being a waterproofing membrane, Kerdi is designed to prevent the entry of water past floor substrates. But now wondering how stiff/durable Kerdi board is compared to drywall. That’s its main purpose. The banding in corners leave minimal build up that's easy to deal with. That being said, what’s everyone’s opinion on running membrane on top of mud bed? Drain assembly type? Bonding flange? Question 1: When applied to a waterproof HardieBacker fiber cement board, does the KERDI membrane perform better than a roll-on waterproofing membrane? Question 2: If the KERDI membrane provides a better waterproofing result (performance and longevity), is it worth the additional cost and bit of effort to apply? But, can you apply the Kerdi band over the HydroDefense board and have it work and seal as expected? If they are compatible and the band will form a waterproof seal to the Hardie board product, then you are set. A cement board is a tile backer board that has many different brand names: USG Durock, Custom Wonderboard, and Hardiebacker (technically, a fiber-cement board) are just three popular name brands. Hey guys, Took the advice of alot of you and invested in Kerdi moisture barrier for my personal bathroom remodel. So far, I have not seen much discussion on finishing methods with regard to corners, joints. I plan to cover wall with 1/2 inch Hardibacker then apply Kerdi membrane over backer before I tile floor to ceiling. I like the kerdi products, but installing is a little tricky for me, i have to get the mix just right especially over backer board. Today, you'll see how to avoid these mistakes with a step-by-step plan. And go… Not my work. New construction, what y’all charging? GoBoard and Kerdi pans and linear drains are my hybrid go to. As for the walls, I've used Kerdi membrane over cement board, Kerdi membrane over drywall, and Kerdi Board. Thin sheet membranes like Kerdi or NobleFlex are examples . Schluter wants you to use unmodified mortars over their products like Ditra and Kerdi Thinset manufacturers want you to use modified mortars when installing porcelain tile Apply KERDI-FIX to the inside vertical surface of the KERDI-BOARD-ZC profile and slide the profile over the edge of the KERDI-BOARD, pushing it tightly against the panel. The Hydrodefense version presumably has a surface coating applied. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. Powder room floor 36sq/ft of 1/4” backer board with 6” black octagon tile. General Comparison of Cement Boards vs. This a is a recent job I completed illustrating Kerdi over Hardibacker. If I never have to cut another cement board wall I'll be happy (same for floors - I used Ditra - but I digress). The current best practice is to place waterproofing OVER the backetboard and just UNDER the tile. Are you wondering about the Schluter Kerdi shower system? I am sharing my experience of prepping a shower for tile with Schluter Kerdi. Sheet membranes such as: Hydro Ban Sheet Membrane, Ardex SK 175, Mapei Mapeguard WP 200, Redgard Fabric Membrane, Wedi Subliner Dry Ardex: X5, X77 Custom Building Products: Versabond Flex; FlexBond KERDI-BOARD: Waterproof a Shower in 1 Day: KERDI-BOARD by Schluter is one of the best ways to waterproof a shower. It’s probably more water proof (moisture will not deteriorate Kerdi-Board) Its only about 30% more in cost (about $440 for at large 4 foot time 8 foot shower or 96 sq. Sep 20, 2022 · My question is: Since I am going to apply the Kerdi membrane over the whole thing anyway, is it still necessary to embed the mesh tape to the hardie backer seams? Jan 21, 2024 · I have a partial roll of Kerdi membrane and some unmodified thinset left over from another projectquite enough of it that I could cut some strips of the membrane to use as an approximation of Kerdi band and then use that instead of a new roll of alkali-resistant tape. Durock with ardex sk tape and a roll on membrane has virtually no build up. Membrane should be covered and stored at temperatures above freezing (32°F / 0°C) and away from UV exposure. This wastes time and money and causes failed tile showers. Upstairs bath floor 100 sq/ft of 1/4” backer board with 8” floral design tile. Thin, waterproof sheet membranes over backer board Most manufacturers want a modified mortar used to install their waterproof sheet membranes. Depending on your preference, you may decide to use only the membrane and a shower pan from another brand. We also found that using a heavy rolling pin worked wonders for really setting the Kerdi. I have a question about the pan though. Kerdi really offers very little advantage over hardiboard plus membrane. Located in Greenwich Village, Joe's is famous for its thin, foldable crust, tangy tomato sauce, and perfectly melted cheese. Would this be a suitable option for me? The kitchen has 5/8 base plywood, than another 1/4" on top of that from a previous install and some old glue down linoleum on top of that totaling probably around an inch. It just isnt sticking well at all and especially on Installing a Schluter-KERDI membrane over cement board is a common strategy for creating a completely waterproof and vapor-retardant assembly, particularly in shower and wet-area construction. Also I like that GoBoard is a little stiffer. Sadly, homeowners and contractors install KERDI incorrectly. Kerdi membrane over drywall with kerdi pans and drains on all the wet areas. … In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. Although you can use cement backer board on both walls and floors, Ditra is limited to just floor applications. Kerdi membrane is a waterproofing material that is designed to be used in wet areas such as bathrooms and showers before tiles are installed. I've been looking, since I decided to post - and I'm only getting confused. Waterproof showers will be more expensive than a shower that just uses a vapor barrier behind the cement board whether you use redgard, kerdi or another surface applied waterproofing membrane. How to Install Kerdi Membrane over Greenboard? Having figured out that the Kerdi membrane can stick to the greenboard and prevent water from passing through, it’s time we look at how to install it correctly. This guide explains how to use map tools, filters, and booking tactics to quickly pinpoint the right hotel near landmarks, transit, and neighborhoods that fit your plans. Since Schluter makes both products, you can enjoy their warranty on your shower system. Kerdi board is a lightweight foam panel covered with a waterproof membrane on both sides. Hanging KERDI membrane is similar to hanging wallpaper. The integrated Schluter®-Shower System eliminates the potential for leakage, efflorescence, and mold growth in the system, is maintenance-free, and dramatically reduces total installation time to ensure What’s everyone’s opinion on go board? We do a lot of tub to shower conversions, usually use kerdi shower pan and regular backer board but maybe it’s time to try this instead (for the walls). In this instance I use Schluter-Set. Kerdi Board vs. Hall bath with 30sq/ft of 1/4” backer board with 6” octagon tile. Attach boards with modified thinset mortar, or use screws and washers Apply Kerdi-Fix to all seams and fastener points Seal all seams and corners with Kerdi strips and transition pieces Apply thinset over membrane before tiling The foam-based board is easy to cut, but the extra membrane layers involve more time and preparation for waterproofing. You need to have some sort of waterproof membrane, tile grout and backerboard are porous. Kerdi can be used over drywall, no cement board needed. I have done all Kerdi, kerdiboard and my hybrid. Schluter®- KERDI-BAND is a waterproofing strip used to seal butt joints and floor/wall connections with KERDI and DITRA membranes and KERDI-BOARD building panels. A Kerdi membrane will be more compatible with the Kerdi shower pan than other waterproofing products. ft. A friend of mine pretty much only uses Kerdi membrane or Ditra on installs and never uses Hardibacker or Denshield boards. Thanks! The purpose of using the Kerdi membrane over the greenboard is to create a more substantial waterproof barrier on your walls. (Wedi panels for walls are beyond my budget). The most basic is cement, boards made of inorganic materials and crafted with lightly aggregated Portland cement with fiberglass reinforcement. of wall space, which is a big shower) I like 1/2" backer board because of its rigidity. I like GoBoard over KerdiBoard for a few reasons. Hardibacker remains an excellent choice for budget-conscious wall projects where the installer is comfortable applying a separate liquid waterproofing membrane. Nov 30, 2025 · Kerdi-Board is the preferred choice when speed, minimal dust generation, and an integrated waterproofing system are the highest priorities. Kerdiboard doesnt have a fire rating but cementitious backer boards do. Waterproof board and waterproofing membrane might be a bit overkill but I'd like to. Joe's Pizza has been serving up classic New York slices since 1975, earning a reputation as one of the city's most beloved pizzerias. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. Which shower tile backer board is best? Cement board, Wedi board, Kerdi board, Hardibacker, Densshield, Durock, Permabase, or Wonder board In this tutorial, you'll see common KERDI membrane mistakes and how you can avoid them. Cement Board While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. Will use the Schluter Shower system. It's a straight forward process. Waterproof? Lightweight? Easy to cut? Quick to install? Are we REALLY talking about creating a shower or bathtub surround? You want Schluter KERDI-BOARD. The principle advantages of KERDI-Board are weight and ease of cutting and installation. I still flood test and ensure solid installation methods. This video shares how to avoid KERDI membrane mistakes with a step-by-step plan. btlfw, vjn0e, gj1if, nretb, kzfxs, mkp4a, e0v9yg, lirgw, bqlx, 5skc,