kerdi membrane over cement board

Jessica considers herself a home improvement and design enthusiast. 4. For indoor projects and gypsum board, thinset with a latex acrylic modifier is ideal. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. I imagine we could share some good stories. To learn more, see our tips on writing great answers. The thin-set mortar should be mixed to a fairly dry consistency and then spread on the surface with a 1/4 inch square notch trowel. After installing your mud bed, make sure it is fully cured before applying Aquadefense. Their lighter weight makes moving panels around during installation a cinch, which is a far cry from the heft of conventional cement board. We tried adding water to the thinset, we tried using a larger notch trowel, but nothing seems to make the Kerdi stick. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Once the membrane is in place, it can be sealed and reinforced with Kerdi-Fix sealant, Kerdi band, and Kerdi-Drain for added waterproofing strength. I have to redo my tub surround due to moisture leaks and failing grout. Cement board comes both in 1/4-inch-thick and 1/2-inch-thick versions. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. The Schlter system tends to be more durable than a cement board, but it also depends on the particular application and the weather. The use of modified thinset adhesive could result in an inadequate bond and could lead to possible delamination. 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 moving independently thus preventing cracking) prior to installing the Kerdi membrane. You provide the pitch during the tile set. Being a Los Angeles resident, Jessica spends a lot of her time looking for her next DIY project and sharing her love for home design. the cost of the tile job. Here's how to get it right the first time, If you've got a steady hand, a few easy-to-find supplies and patience, you can install a tile backsplash in a kitchen or bathroom, Step 4 in swapping your tub for a sleek new shower: Pick your waterproofing materials and drain, and don't forget to test, Work with your contractors and installers to ensure a safe, stylish curb that keeps the water where it belongs, Get the benefits of a time-honored ritual without firing up the coals, thanks to easier-than-ever home steam systems, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Out With the Old Tile: 8 Steps to Prep for Demolition, Convert Your Tub Space Into a Shower Waterproofing and Drainage, Steam Showers Bring a Beloved Spa Feature Home. kerdi membrane over osb This makes Kerdi Board suitable for a wide variety of interior applications, including kitchen countertops. Can Kerdi membrane be installed over painted drywall? My understanding is that Schluter-Kerdi, being a sheet topical membrane, recommends just going with regular drywall instead of cement board but you can certainly use cement board as the substrate. However if installed on drywall it is only protecting one side. Aquadefense is approved by IAPMO for use as a shower pan liner, but be sure to check your local building codes, as some areas of the country still require the PVC liner. Schluter Kerdi on regular drywall - GreenBuildingAdvisor Once this is done, continue the installation by following the directions for the particular Kerdi product being used. For the floor I make a dry mix mud base and then the Kerdi membrane. My floor tiles are 2" x 2"." - Lisa Jasper No - you can not use Kerdi Board on the floor. The surface of Wedi is perfect for bonding. . You are wise to use a cement board. It is also widely available and a relatively inexpensive option approximately $10 for a 3-foot by 5-foot sheet. I also used a larger sized trowel than the one recommend by Schluter. Is it plausible for constructed languages to be used to affect thought and control or mold people towards desired outcomes? Run a damp towel over the cement board surface to dust . What's the difference between a power rail and a signal line? RedGard, on the other hand, is a liquid waterproofing membrane made by Custom Building Products. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. That would tell him where the edge of the framing needs to be. Kerdi-Board is an extruded polystyrene foam panel, with reinforcing material on both sides, covered by fleece webbing for effective anchoring of thin-set mortar. Kerdi Shower Pan and Cement Board Walls - DIY Home Improvement Forum When it comes to installation, a Schlter system is typically easier to install than a cement board, and it also allows for more design freedom as it does not require a traditional waterproof layer. Like cement board, the boards are heavy and hard to cut. It also helped me to work in smaller sheets. If you can avoid that, the demo would be ~easy enough to maybe have some friends who'd work for beer come over and help you knock it out. Best Cement Boards for the Shower - The Spruce if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'remodelormove_com-leader-2','ezslot_21',165,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-2-0');Once the seams are sealed, lay down a waterproof coating to the floor and walls of the shower space. However, if installed on drywall, it only protects one side. link to How To Organize A Bathroom Closet. Schulter Ditra is manufactured by Schluter Systems and is a 1/8 thick polyethylene uncoupling membrane that is specifically designed for tile installations. Kerdi Board is expensive, but I can justify it because it saves time, and it's a joy to use. Can You Put RedGard On HardieBacker Board? - Next Modern Home Can I put Kerdi board over drywall? To line niche shelves, for instance. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. No, that doesn't sound right. Kerdi Membrane is a product of Schluter systems. Following the instructions for the product being used and ensuring that all of the necessary steps are followed will help to ensure a successful installation. How to prep a shower for tile with Schluter Kerdi - TwoFeetFirst Drywall under Kerdi would have been a better choice. The shower is ready for tile. Best substrate for kerdi membrane - nsbu.treviso-aug.it The perfect fold is tricky and many of my first steam showers where built without the sealed slip joint. After today's tutorial, you'll gain the confidence to transform your old bathroom into a new space. When I tried to use the edge of my trowel [per schlutter video] I could see I was pulling a lot of the 'felt' off the backer. Kerdi Board vs. Cement Board. Installing cement board involves placing the boards atop a layer of thinset adhesive, a process known as bedding. Is this overkill? Personally, I like standard drywall. x 60 in. In my. We don't expect people to master this and in fact I know maybe two guys in my area (live in big city) that could do this. Here is a video off the Schluter-Kerdi website that describes how to apply the waterproof membrane on top of the substrate (gypsum board in this case): http://www.schluter.com/schluter-us/en_US/Shower-System/KERDI-SHOWER-KIT/Schluter%C2%AE-KERDI-SHOWER-KIT/p/KERDI_SHOWER-KIT. Can you put Kerdi membrane over plywood? - KnowledgeBurrow.com Your real issues are the lack of proper corners on this shower. Sweeby-Can you clarify- I undestood that the thinset would tend to dry out from the thirsty hardi or skim over from the air; so how does booking the Kerdi help with the first? The core isnt waterproof, but it can withstand getting wet without falling apart, so even if your waterproofing system leaks, the board will stay intact. What do you mean it doesn't adhere? What was the indicator that let you know that spritzing was not enough, and that you needed to 'sponge' the Hardi? Bulk update symbol size units from mm to map units in rule-based symbology. 3. Waterproofing cement board is relatively simple and there are several different waterproofing products available. Properly waterproofing a shower area sharing a living room wall, Can I use cement accelerator to decrease setup time of modified thinset. When I tried putting up the first sheets, which were only 36" x 39", and even though I had SOAKED the hardi, to the point water was pooling on the floor, the thinset was already drying before I got the Kerdi up, and I couldn't get it to adhere properly no matter how hard I tried. We are no longer supporting IE (Internet Explorer), Do not Sell or Share My Personal Information. Answer (1 of 3): Schluter recommends applying Kerdi over drywall for walls, however, my local building code will not permit this practice - the local building code requires cement backer on the walls of a shower enclosure, therefore, I have done this successfully many times. Ultimately, the decision between a Schlter system or a cement board comes down to the particular application and the goals the user has for the floor system. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Kerdi can be installed first on drywall or cement board. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'remodelormove_com-box-3','ezslot_2',173,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-box-3-0');Yes, you can put Kerdi membrane over cement board. Good luck with your project. . When installing KERDI with unmodified thin-set mortar over particularly dry and porous substrates, it is recommended to wet the substrate first, in order to help prevent premature drying or skinning of the thin-set mortar. If cement board had been used, most likely the damage would have been much less that what I have to deal with now. You're correct if you use the shluter kerdi membrane you do not use a vapour barrier since it creates a sandwhich effect that doesn't allow the substrate . Make sure to use multiple coats, if necessary. KERDI was developed as a waterproofing membrane to be used in . Significantly more time and effort is required to ensure a quality bond when using a modified thinset adhesive with KERDI, and for this reason, it is usually not recommended. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. Our thinset was more watery than the videos, but it still managed to dry out quickly, even in the time it takes to apply the small corners in our shampoo niche. If you want a cement board, use Durock or Wonderboard. Step 2: Determine the room's center. Kerdi-Board 1/2 in. x 48 in. x 96 in. Building Panel Shower Install - Cement Board or Schluter? - RedFlagDeals.com The drywall's back side fails, and it's just as bad or worse than it was on the tile side. I look at ceramic tile as a lifetime-of the house-product, so I use the best material for the job.I prefer to use cement board as the substrate with the Kerdi on top. This is necessary to ensure that the membrane will adhere properly to the drywall. Hardie board is a cement-based siding product that is water-resistant, but not waterproof. Install the Schluter Kerdi membrane over the backer board using the correct mortar. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. 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. Ceramic and porcelain tile, more than almost any other surface material, need a stable . Underlayment is designed to smooth out uneven areas of the subfloor and form a rigid layer that prevents the flooring from bending. Thanks to all for the feedback. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? When it comes to tile underlayment, your options can be categorized into three main classifications, each suitable for different tiling circumstances: Although cement board is the most commonly used underlayment for tile, Kerdi board is growing in popularity as a multifunctional tile substrate. Kerdi Board is suitable for a number of interior applications. The gridlines printed on the surface are beneficial for the installation process, also allowing for quick, neat cuts with a utility knife. This will help you achieve the best results and ensure the longevity of your project. How to adhere edge of bullnose tile to drywall as trim for shower/tub surround. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. What type of thin-set mortar should I use when installing Schluter-KERDI? Glass mat gypsum board is a better choice. Retired Moderator - Theatre Guy (and computers). We also found that using a heavy rolling pin worked wonders for really setting the Kerdi. Hardie board is thirsty, but that's way too fast. Wedi vs. Kerdi Waterproof Membranes: Which Is Better? If you do not already have the hardi up, I recommend using real cement board (Hardi is a fiber-cement) or drywall. ps, now that you don't need it anymore you can throw that useless cheap piece of crap magnesium float my way. Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? What are the differences between "paperless drywall" and "cement board"? It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. What precautions should I take installing tile on a backerboard in an area surrounded by cement? see Prop 65 WARNINGS. Kerdi Membrane Over Greenboard (Is It Recommended?) In jobsite conditions and over a long time, who knows. This is the traditional tile backer. And second, since it's foam, the board is super easy to cut with just a utility knife. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Also, apply the acrylic mastic between the Create curved designs around pipes or columns using the vertically-grooved KERDI-BOARD-V, or use L-shaped KERDI-BOARD-E panels to enclose similar. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. But that doesn't address your question, so it's just a comment, not an answer as such. If you want added info there's an old Kerdi thread here. Kerdi Board Vs. Cement Board (What's The Difference?) - Home Mindset First, it's super lightweight compared with the rest. If you can paint a wall, you can use RedGard. To put things into perspective, consider that a tile floor is made up of three layers: the subfloor, the underlayment, and the tile surface you walk on. taping and prepping cement board for tile - Home Improvement Forum Cement board is the most common and widely-known backer board. The Pros and Cons of Various Tile Backers | Family Handyman Without an underlayment, even the slightest movement of the subfloor can result in cracking of the tile and crumbling of the grout lines. Making statements based on opinion; back them up with references or personal experience. DensShield is one common brand. This allows for future compression and an area at the corner where things are more forgiving. Will use the Schluter Shower system. I also used the Kerdi drain. liquid waterproofing (redgard) over durock cement board - bathroom Additionally, it is important to waterproof cement board before tiling, as the grout and tiles can help keep the board watertight. We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. Prime first to create a flat, uniform surface that is free of dust, grease and other debris. My idea is to block in and install the tub in the existing corner, erect the new wet wall, and use hardi-backer to shim the wall out over the tub flange, then apply kerdi over the whole thing.Does kerdi take offense at being installed over hardi? A successful tile installation largely depends on the substrate that the tile is attached to. How do I connect these two faces together? First, you would waterproof with your favorite liquid waterproofing membrane of . How long should I wait after painting on the Redgard before I try to reapply the membrane? Sure, you can do it.just be sure to "spritz" or wet the hardi thoroughly before.it's pretty "thirsty.". link to What Kind Of Paint For Garage Walls? Too little, and the kerdi will never show you gray, no matter how you sweat. How to install a kerdi membrane over cement backer board - Quora if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'remodelormove_com-mobile-leaderboard-1','ezslot_24',166,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-mobile-leaderboard-1-0');If cement board is not waterproof, it can negatively impact the integrity of the tile that is installed on top of it, and can lead to a variety of issues. is the contractor creating a waterproof schluter-kerdi shower? Connect and share knowledge within a single location that is structured and easy to search. And by 'booking the Kerdi' I mean we put it in the bathtub, sprayed it with the handshower, then booked it (just like wallpaper). Why you use cement board? Hi.I have a unique situation. To ensure that the Kerdi is completely dry prior to tiling, inspect the inside of the membrane for any signs of moisture or condensation. Installation is simple- just trowel a layer of thin-set adhesive on the floor and embed the mat in it, then fill the cavities with thin-set. A good rule of thumb is 24 hours per inch of thickness, then one more day on top of that to be sure. Rolling pin, good, now I can throw away my magnesium float.LOLCasey. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. Install an Uncoupling Membrane Between Concrete and Tile. HardieBacker with Hydrodefense instead of Kerdi Board? : r/DIY - reddit A mortar wall is better and can be customized easier. I ended up putting up a thin, skim-coat of thinset all over the hardi board, letting it dry, and then putting up the kerdi. I will say that to is easier to put the membrane over drywall than cement board. Overall, waterproofing behind and around shower tile is a critical part of any installation to ensure that the area is adequately protected from water and moisture damage. I think the first one I used was cheap and that was part of the problem. #4 You could be adding a good 1000 pounds to your install too.

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