I think it is engrained in me to do that so I forget to mention it. Foam-core tile backing board has two big advantages over other backer boards. This is often accomplished by filling any holes and cracks in the wall with appropriate spackling or patching material. You troweled on thinset combing it out then pressed the Kerdi into place? Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers). Ditra is a 1/8-inch thick polyethylene membrane with a layer of anchoring fleece on the underside and a grid of square cavities on top. When doing so, it is important to ensure that the drywall surface is clean and free of dust, grease, and loose paint. Putting this stuff on walls is difficult and time . Hardie board is thirsty, but that's way too fast. Since my guys and I will be doing this for the first time next week, I 'd like to take advantage of your 'learning curve.' She grew up surrounded by constant home improvement projects and owes most of what she knows to helping her dad renovate her childhood home. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? Can you put KERDI over regular drywall? - remodelormove.com 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. 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. Glass mat gypsum board is a better choice. I appreciate your help and your quick response. I'm thirsty. This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. First Kerdi can be installed on drywall or cement board. 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. 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. Will use the Schluter Shower system. Jessica considers herself a home improvement and design enthusiast. 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. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. 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. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. Cross your fingers and hope it's all OK. Not the best Kerdi Showcase. Hello D Zak! Required fields are marked *. Kerdi 3 ft. 3 in. Slap it up comb it out, leave every ridge tall and perfect. Modified vs. Unmodified Mortar With Kerdi Membranes As a contractor, I have been using Kerdi since it came out. With Wedi products, the compound curves are easy to produce quickly. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Been clankin' away at this computer for a couple of hours now, guys. The colour is different. Waterproofing is an important aspect of any bathroom or wet-area installation. Should I use Kerdi membrane or cement backerboard? To install Kerdi Membrane, start by applying Schulter ALL-SET mortar (or similar) to your cement board substrate using a 1/4" x 3/16" V-Notch Trowel. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! is the contractor creating a waterproof schluter-kerdi shower? First, its super lightweight compared with the rest. Cement board is a heavy mess compared to drywall, and drywall is a heavy mess compared to Kerdi Board. Thanks to Mongo's earlier post, we knew we'd have to spritz the Hardi -- but found that even that wasn't quite enough. Finally, make sure to select a thinset that is appropriate for the job, check the manufacturers recommendation, and always follow the instructions on the product label. Yup! It's a lightweight polystyrene board faced with Kerdi that comes in various thicknesses that you can use in place of drywall or cement board. In a perfect job, it will waterproof. 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. Finally, it is important to remember that any thin-set that has been exposed to moisture must be replaced. Yes, it is possible to put Kerdi over regular drywall. After roughly two days I would fill the corner with silicone. A good rule of thumb is 24 hours per inch of thickness, then one more day on top of that to be sure. Well, I'm going to give you three different ways to seal the backer board at the tub flange. Kerdi membrane prevents water damage and mold development. The boards come in three-foot by five-foot and four-foot by eight-foot panels, sized for efficient use in bathrooms. Cement board is the industry standard when it comes to tile substrates and the most preferred among professionals when installing porcelain or ceramic tile. The main types of cement board you could encounter are Fibre Reinforced Cement (FRC) board and gypsum board. If I go the kerdi membrane route, do I still need to tape the joints before installing the kerdi membrane . x 33 ft. Waterproofing Membrane: Kerdi-Board 1/2 in. Kerdi-Board panels allow the installer to prepare and create a broad range . 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. When it comes to using thinset with Schluter products, the Schluter-Systems website recommends using unmodified thin-set mortars specifically designed for use with Schluter membranes. HardieBacker with Hydrodefense instead of Kerdi Board? : r/DIY - reddit If done according to manufacturers instructions, it will seal nicely. By: Author Olin Wade (Remodel or Move Stuff). One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. The best answers are voted up and rise to the top, Not the answer you're looking for? If so, that means breaking up the floor pan. GoBoard is a kind of backer board because the main elements of a backer board are cement, silica, fiberglass, etc. But there are downsides. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin? I circled one area, but there are lots of these edges." - Lisa Jasper The Kerdi band should be smooth and flat - not wavy/ "3) there is no membrane of waterproofing on the hardboard across from the "wet wall" after 5 1/2 feet up. I would get someone else. see Prop 65 WARNINGS. Then you can apply a thin layer of KERDI-FIX to the board, the membrane over top, and use a rolling pin to press it down and ensure a secure bond. Recovering from a blunder I made while emailing a professor, Minimising the environmental effects of my dyson brain. Step 7: Cut the Tile. x 60 in. 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? And we are using a drippy mixture, it slides off the trowel. However, you do still have to take care to waterproof the seams and the fastener penetrations to create a waterproof assembly. Will be doing a bathroom gut and will be laying durock cement board over plywood sub floor. I also used the Kerdi drain. Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com I guess that why it was so frustrating that cement board is just sooo thirsty. Let the mortar dry for 24 hours then test the shower. 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? Kerdi Questions and Answers - Kennedy Kitchens & Baths Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com There is definitely skill & planning required to doit right. It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. It is a fast process that is hard to mess up if you do it right. It works well, is what Schluter recommends and I've never had an issue with it. Bathroom closets are often catch-alls for anything and everything remotely related to self-care. An extra layer of thinset is then added to the surface of the cement board to adhere the tiles in place. To learn more, see our tips on writing great answers. If installing large format tiles (over 15"), be sure to give the Aquadefense at least 8 hours to cure first. Cut the shower tray to size. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. 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. 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. Making statements based on opinion; back them up with references or personal experience. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'remodelormove_com-large-mobile-banner-1','ezslot_17',164,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-large-mobile-banner-1-0');As an added precaution, you may want to consider to adding a water-resistant layer afterwards, such as a caulking or flashing tape. Hi.I have a unique situation. Everyone knows brick and stucco, but what about fiber cement and metal? True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. While cement board and grout are not waterproof, Kerdi is and can even be directly installed over drywall. Unlike cement boards, you can bend this material without it breaking. Kerdi Board vs. Cement Board: What Are The Major Differences? It is lightweight and made of expanded polystyrene. Best substrate for kerdi membrane - nsbu.treviso-aug.it Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. Step 4: Place the Tile. The cement board needs to be clean, free of debris, and dry. The fastest method [for me and possibly other dilettants] is to stroke the knife at a diagonal to the comb marks, top down, center out, pushing all the air before you with short, overlapping strokes.-Thinset needs to be pretty darn wet: Needs to stay put when combed, but should be soft and shiney. They can be installed on any type of support and can even be used to create partitions, with no structural support required. We use a pump action garden sprayer and its usually dry by the time we clean the sprayer. Wedi vs. Kerdi Waterproof Membranes: Which Is Better? To ensure that the Kerdi is completely dry prior to tiling, inspect the inside of the membrane for any signs of moisture or condensation. We tried soaking the cement board and applying the kerdi in small sections. Any recommendations? This liquid waterproofing solution does more than keep water away, it also promotes tile adhesion and prevents cracking. A quality underlayment will also serve as a waterproof barrier between the subfloor and the tile surface. Mike Holmes uses backer on his show. 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? For the floor, he should've put a mortar bed, then a membrane that goes over the curb, then another mortar bed. Wedi Board vs Cement Board vs Kerdi Board - The Ultimate Home Living Blog Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? The 30-in. 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. Their lighter weight makes moving panels around during installation a cinch, which is a far cry from the heft of conventional cement board. This means that even if your waterproofing system leaks, the cement board will remain intact. So long as the seams and joint areas are properly prepared, the panels can also provide waterproofing. We are DIYers who have already remodeled one bathroom successfully, but this is our first time using The Schluter shower system. They are available in thicknesses of 3/16, 3/8, 1/2, 3/4, 1, 1-1/2, and 2 (5, 9, 12.5, 19, 25, 38, and 50 mm). Additionally, all seams should be sealed with Kerdi Fix and covered with fleece. This product is available in 3/16", 3/8", 1/2", 5/8" 3/4", 1" 1-1/2" and 2" thicknesses, allowing for a wide variety of installation options. Why are physically impossible and logically impossible concepts considered separate in terms of probability? RedGard can be used on a wide range of interior and exterior surfaces. Do new devs get fired if they can't solve a certain bug? Kerdi Vs. RedGard (Compared) - Build It Fine After today's tutorial, you'll gain the confidence to transform your old bathroom into a new space. I can take a bit of it off the wall and roll it into a ball. All shower/tub areas should have concrete board (I prefer hardiboard). This will help to ensure that all drywall is completely covered. They are designed to provide a waterproof, vapor-tight layer to the substrate, which in this case would be the cement board. 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 . How do I connect these two faces together? 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. My floor tiles are 2" x 2"." - Lisa Jasper No - you can not use Kerdi Board on the floor. Should I use Kerdi membrane or cement backerboard? It costs more but it;s worth it for the ease of install IMO. 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. Modified thinset adhesive is a premixed product that contains latex or acrylic components which make it quite a bit more flexible than regular thinset adhesive and therefore better suited to some applications. Once its applied, the last step is to follow up the waterproof coating with a waterproof sealant. But a mortar bed does have advantages. 120 sq feet including the floor. First, you would waterproof with your favorite liquid waterproofing membrane of . What precautions should I take installing tile on a backerboard in an area surrounded by cement? If any is found, wait a few more hours and then re-inspect. Kerdi Board is suitable for a number of interior applications. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'remodelormove_com-narrow-sky-1','ezslot_27',168,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-narrow-sky-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'remodelormove_com-narrow-sky-1','ezslot_28',168,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-narrow-sky-1-0_1');.narrow-sky-1-multi-168{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:15px!important;margin-left:auto!important;margin-right:auto!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}Waterproofing should also be done on other areas in the shower as well such as the corners, window sills and other areas where water can easily accumulate. Kerdi Membrane is a product of Schluter systems. The bag says Mapei floortile mortar, it was the only unmodified thinset at our hardware store. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Backerboard plus a waterproofing membrane like Redgard is all that is needed for tub surrounds with thinset then tile. I think the first one I used was cheap and that was part of the problem. Because it can let some moisture wick through it, you have two choices: put a moisture barrier behind it to protect the structure, or, waterproof the front of it.
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