kerdi membrane over cement board

Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. If your going to do the job do it right, and give professional advice pls. Whether or not you need a Kerdi membrane is a factor of use. Can Kerdi membrane be installed over painted drywall? I like to use a garden sprayer to keep the thirsty Kerdi wet. :/. Once the adhesive has been applied and has had time to properly cure, then the KERDI membrane can be applied to the wall. The big issue with cement board is that the thinset will skin over really quickly. When cleaning thinset off of Schluter membranes, the manufacturer recommends using a wet sponge and taking care to avoid any scoring or inconsistencies on the surface of the membrane. I appreciate your help and your quick response. It doesn't matter but you absolutely need to use both a substrate and a waterproofing membrane. That means that you do not have to rely on a surface membrane or worry about the board failing if the core is exposed to water. What is the proper substrate to use on tiled wall? What changes do you suggest to make Bathroom looks more updated? Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. I would get someone else. Any competent tile contractor would float the wall in mortar giving you a stronger, level, perfectly flat, and square surface to properly install tile. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. We sponge water onto the cement board. In jobsite conditions and over a long time, who knows. The problem is on the back side of the drywall, which is not protected. 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. Since the existing wall board will be removed, I'd prefer to go a little extra and install a water proof cement board type base so the tile has a solid substrate even if it were to get wet . Creative, C'mon over for a beer! Their lighter weight makes moving panels around during installation a cinch, which is a far cry from the heft of conventional cement board. They are designed to provide a waterproof, vapor-tight layer to the substrate, which in this case would be the cement board. Tile Shower SurroundCement Backerboard Location? Cement board is a bit better, but you need to spray either one before applying the mortar so that it doesn't "skin over" before you can get the Kerdi up. With so many different types of underlayment to choose from, it can be hard to decide which is best for your project. Needless to say, the drywall turned to mush. . Continuing Education for Architects & Designers. How did this project turn out? A place where magic is studied and practiced? Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Kerdi Membrane is a product of Schluter systems. The colour is different. Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. We also found that using a heavy rolling pin worked wonders for really setting the Kerdi. Not even the plumber's fault as it was just a bad valve. Waterproofing is an important aspect of any bathroom or wet-area installation. 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. Cement board is readily available and relatively inexpensive (about $10 for a 3 x 5-ft. sheet). But you might be struggling to figure out what kind of paint to use on garage walls. Houzz utilise des cookies et d'autres technologies de suivi similaires pour personnaliser mon exprience utilisateur, me proposer du contenu pertinent et amliorer ses produits et services. And by 'booking the Kerdi' I mean we put it in the bathtub, sprayed it with the handshower, then booked it (just like wallpaper). We apply the thinset the recommended trowel, can't remember what size off the top of my head, in small sections and by the time my husband hands my the piece of membrane the thinset is not skinned over but certainly dry. Will use the Schluter Shower system. Do the prefab Schluter niches like the double unit 12 by 28shelf have a built in pitch to the bottom and middle shelves to drainoff water as shown in niche that you built in that thread? Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. Wedi showers feature a pre-sloped base that is already installed. The 30-in. HardieBacker with Hydrodefense instead of Kerdi Board? : r/DIY - reddit Keep in mind, that, just to be safe, most professionals choose to install a waterproofing membrane on top of the cement board when installing in wet locations like tub surrounds or showers. "..2) the kerdi band isn't stuck flat -- the edges in some spots are wavy. We store towels, medicine, toiletry supplies, first-aid gear, massage devices, facial steamers, spare Painting your garage is a great way to improve the look of the space and make the walls easier to clean. Additionally, seal the space around any pipes and fixtures that can be found in the shower. 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? I still wet the walls first. Kerdi Vs. RedGard (Compared) - Build It Fine Cement board, Wedi board, Kerdi board, Hardibacker, Densshield, Durock, Permabase, or Wonder board . No bulges either, but definetly no thin spots.-Not paying attention to the direction of the comb. Furthermore, if another trade, such as the shower glass installers, makes a mistake then you'll be . What's the difference between a power rail and a signal line? Seams and joints should also be waterproofed and caulked to prevent water from seeping through. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. Think about movement. This liquid waterproofing solution does more than keep water away, it also promotes tile adhesion and prevents cracking. Ratings (91) (5) (91) (3 . Dean, our tile consultant, says glass mat backer board is his first choice due to the ease of installation, cost, and because his workers like it. When it comes to applying KERDI, however, it is advised to use a regular thinset that includes portland cement as its main component. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If you choose to use Aquadefense as a shower pan liner, be sure to continue it up the walls at least 6", tying into your waterproofing on the walls. You peeled it off? There are numerous ways to do this. If so, that means breaking up the floor pan. Step 7: Cut the Tile. Asking for help, clarification, or responding to other answers. Hi.I have a unique situation. In order to determine which tile underlayment is right for your project, you need to know which issue youre trying to solve whether its preventing subfloor cracks from transferring to the tile, soundproofing, moisture protection, or providing more rigidity to the tile. Yeah it seems that the only products that will be compatible with cement board and the kerdi membrane are bostik ditra-set and schluter all-set (or one of schluters other products). 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. Step 1: Measure the area. Kerdi board is a kind of waterproofer because these kinds of boards are made of XPS foam. #3 This is a DIY site. Even the tiling subs have moved away from mortar walls because of the labor cost and lack of craftsmen in the industry. This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. Installation instructions vary depending on the type of Kerdi membrane being used, but typically the membrane is applied directly to a clean, dry plywood surface that is free from dust, dirt, and other debris. Once you have selected the right sealer, follow the manufacturers instructions and apply a generous, even coat over the entire surface of the Hardie board. Needed to interject a little "amateur humor. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. The completed assembly takes the place of more traditional backer board when installed over 3/4-inch wood subfloors. Why do small African island nations perform better than African continental nations, considering democracy and human development? Kerdi board vs. Membrane vs. Other for Shower - DIY Home Improvement Forum Additionally, all thin-set should be allowed to cure for 24 hours before tiles are installed. Will use the Schluter Shower system. Jessica considers herself a home improvement and design enthusiast. Kerdi Membrane Installation (Step-by-Step Installation Guide) Install an Uncoupling Membrane Between Concrete and Tile. This allows for future compression and an area at the corner where things are more forgiving. My floor tiles are 2" x 2"." - Lisa Jasper No - you can not use Kerdi Board on the floor. The Ditra uncoupling design is lightweight, durable, and minimizes the possibility of cracked tile and grout. I trust it and have never had a callback. By the time you switch from the RG application to the Kerdi installation, it should be dry. The major drawback to cement boards is their weight, as they are incredibly heavy and can be difficult to cut. There is definitely skill & planning required to doit right. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! 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. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. They are absorbed into the surface material and help keep moisture away from the substrate surface. Re: Kerdi on shower curbs. As a contractor, I have been using Kerdi since it came out. It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. Using modified thinset on KERDI can be tricky and in some cases, it can cause issues. I have watched it done 10-15 times, have good skills, and if I tried to make large mortar walls myself it might like a little kid threw up concrete Should I use Kerdi membrane or cement backerboard? For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Unlike cement boards, you can bend this material without it breaking. KERDI BOARD: Waterproof Your Shower in 1 Day - Home Repair Tutor The drywall's back side fails, and it's just as bad or worse than it was on the tile side. Can be cut to size easily using a utility knife. Go with smaller bags or only mix half. Kerdi Membrane not sticking to cement board - John Bridge craft paper or plastic is great if the inspector wants it but it is (should be) doing nothing for a tub surround that has HB/redgard/thinset/tile. Kerdi-Shower-T/-TS/-TT is a prefabricated sloped shower tray with integrated Kerdi waterproofing. FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. If you are good with a trowel and understand how to set up and use screeds as a guide for leveling or forming the mortar, pouring a traditional mortar bed may be a good alternative to tile backer board, especially on uneven or sloping floors. Hardibacker is a VERY "thirsty" material that sucks the moisture out of the mortar VERY quickly and I don't like it. I simply sponge off the excess. But I did want to understand the cost breakdown as the walls then become WAY more expensive than it would be with Redguard. Ceramic and porcelain tile, more than almost any other surface material, need a stable . In general, the Schlter system is typically more expensive than a cement board, and some people may find this an attractive option for its long lasting, easy to maintain qualities. The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. However if installed on drywall it is only protecting one side. This will help you achieve the best results and ensure the longevity of your project. Thinset with a latex acrylic modifier is best for interior projects, but if youre installing outdoors, you should use thinset with a polymer modified (PM) compound for greater moisture resistance. This is a very effective and popular method of installing tile, and one that ensures the tile doesnt crack. #4 You could be adding a good 1000 pounds to your install too. You'll know the RG is dry when it turns reallllly dark bright red as opposed to the pinkish color when applied. Self-leveling underlayment has many of the same advantages as a dry-pack mortar bed but doesnt require as much skill to install. The taping knife at a low angle makes an enormous difference, and I'm very grateful for that hint. Out of curiosity, why are any of you suggesting backerboard at all? x 96 in. Installation. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Kerdi Board is also significantly lighter in terms of weight than cement board, meaning they can be transported and lifted into place with ease evening hauling five panels at a time should be no problem. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. We want that inside corner able to move. Fiber cement board is a variation of cement board that is made from compressed cement and sand and reinforced with wood fibers throughout. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. tripadvisor car rental tampa airport xnxx big tits; roommate questionnaire google form shadow of the dragon queen deluxe; cities where home prices are rising 2022 beachbody bodi block; mahogany tree seeds uses If a pipe or faucet ever leaks in the wall this will ruin your shower. Everyone knows brick and stucco, but what about fiber cement and metal? Contact us: 888-472-4588 Water-resistant gypsum board, or green board, was used in the past as a tile backer but is no longer recommended, mainly because better products are available. 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 this is done, continue the installation by following the directions for the particular Kerdi product being used. Spacers are the next step. Since the existing wall board will be removed, I'd prefer to go a little extra and install a water proof cement board type base so the tile has a solid substrate even if it were to get wet, such as from a plumbing leak, or from infiltration on an exterior wall (as unlikely as that might be). 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. If any is found, wait a few more hours and then re-inspect. there should be a small gap between the backer board and the tub. link to What Kind Of Paint For Garage Walls? Using Kolmogorov complexity to measure difficulty of problems? Liquid membrane over cement board | Terry Love Plumbing Advice The manual can be found here: http://floorelf.com/waterproof, I would say unless you are experienced in working with Schluter-Kerdi waterproofing membrane kit, then I would say work with an easier waterproofing approach, either liquid waterproofing or a combination of liquid and traditional waterproofing (plastic covering the wood frame). Start by cleaning the cement board with a mineral oil soap; this will help reduce mold and mildew growth throughout the life of the shower. On the 'rolling pin', it actually wasn't the kitchen kind, but rather a very heavy metal roller DH had from some sort of fabrication table. Cement board is a heavy mess compared to drywall, and drywall is a heavy mess compared to Kerdi Board. Both may be effective substrates, but Kerdi Board boasts significant advantages. It works well, is what Schluter recommends and I've never had an issue with it. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. 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. Additionally, the use of modified thinset with KERDI could lead to cracks and other issues down the line as the modified thinset can shrink and pull away from the KERDI membrane over time. Schluter Kerdi on regular drywall - GreenBuildingAdvisor Here are the fundamentals of tile installation over cement board. However, the answer you provided above suggests that the OP could omit a waterproof membrane, that I. 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.