kerdi membrane over cement board

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. Once you have determined the type of thinset, its important to also consider the weather conditions during installation. Anyone who has done more than 1 shower shouldn't start without knowing that. ", Signed,Never Hung Kerdi A Day In Her Life. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. Spacers are the next step. Making statements based on opinion; back them up with references or personal experience. Fiber cement board is available in 1/4-inch and 1/2-inch thicknesses. Sloped Shower Tray KST1220/1525 - The Home Depot. If so, that means breaking up the floor pan. Additionally, it is important to waterproof cement board before tiling, as the grout and tiles can help keep the board watertight. 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. 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 For the floor I make a dry mix mud base and then the Kerdi membrane. Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. Yes, you need waterproofing behind shower tile. The Kerdi is essentially replacing the backerboard. Thanks Paul! Its essential to protect surrounding wall and floor surfaces from water or moisture damage that can occur in these areas. Learn about the options in exterior siding before you choose, Before you pick up a single tile, pull from these tips for expert results, Slip resistance, curves and even the mineral content of your water all affect which tile is best for your shower, We help a Houzz user ask all the right questions for designing a stylish, practical and safe shower bench, This isn't a light DIY project: You'll need heavy-duty tools and plenty of protection for your home and yourself, In steamy quarters, tile needs to stand up to all that water and vapor in style. He would take his rough opening measurement and subtract the thicknesses of the tile, the cement board, and in his unique install method the purpleboard. 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. The shower is ready for tile. The boards come in three-foot by five-foot and four-foot by eight-foot panels, sized for efficient use in bathrooms. It only takes a minute to sign up. When applying thin-set mortar, the manufacturers instructions should be followed closely. Is it ok to fasten a shower surround to Schluter Kerdi curb? It also features fleece webbing that allows for effective anchoring into thin-set mortar. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Furthermore, if another trade, such as the shower glass installers, makes a mistake then you'll be . Will use the Schluter Shower system. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. Run a damp towel over the cement board surface to dust . Look at it this way; Withe Kerdi, you either trust it or you don't. Additionally, you can use KERDI-BAND around corners, seams, and joints to help with a waterproof installation. There is a product called Kerdiboard you might want to look into. link to How To Organize A Bathroom Closet. 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. What? I also used a larger sized trowel than the one recommend by Schluter. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. Why you use cement board? Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. If your going to do the job do it right, and give professional advice pls. 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. Putting this stuff on walls is difficult and time . rev2023.3.3.43278. RedGard can be applied to cement board panels in two ways: Roll it on the wall with a 3/4-inch nap roller or spray it on the wall. Continuing Education for Architects & Designers. The cement board needs to be clean, free of debris, and dry. Ditra is manufactured in a 3'3 width and comes in various roll lengths (54sf, 150sf, and 323 sf). I also used the Kerdi drain. 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. A place where magic is studied and practiced? Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving independently? Contact us: 888-472-4588 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. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. Keep in mind that most tile setters err on the side of caution and brush a waterproofing membrane on top of cement board when it is in wet areas like showers or tub surrounds. One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. How should I transition between cement board floor and alcove tub? We are no longer supporting IE (Internet Explorer), Do not Sell or Share My Personal Information. Building Panel: Price $ 119 00 $ 202 06 $ 279 00. Your email address will not be published. If done according to manufacturers instructions, it will seal nicely. Yes, Kerdi membrane can be installed over plywood. It is also essential that cement board joints and fasteners be sealed and waterproofed with the Kerdi Fix sealant to help prevent water from leaking into the wall and floor cavities. They are square. I just a few weeks ago put kerdi on top of hardi-board in my shower and it was PAINFUL! There are many different types of underlayment to choose from, but they all serve the same purpose. Kerdi can be installed first on drywall or cement board. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. The shower tray eliminates the need for a mortar bed. I still wet the walls first. . An additional layer of sealant can also be applied on the seams for extra protection and water resistance. Find the website that's made specifically for you. The major drawback to cement boards is their weight, as they are incredibly heavy and can be difficult to cut. 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. Kerdi is also used as shower lining, as required in IRC Section P2709.2 and IPC Section 417.5.2, over concrete, mortar, tile backerboard, expanded polystyrene foam board, prefabricated polystyrene shower trays, curb and ramp, gypsum board and masonry substrates." So, you can choose what board you want in your shower when using Kerdi. You can apply it on PVC, metal, slabs, walls, and floors. Like the example above. With so many different types of underlayment to choose from, it can be hard to decide which is best for your project. In a perfect job, it will waterproof. I've seen preferences regarding HardieBacker and the cement board products such as Wonder Board. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. Additionally, if the cement board isnt waterproof, it can also cause mold and mildew issues, as well as dry wall damage from the moisture seeping through. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. No, that doesn't sound right. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Using Kolmogorov complexity to measure difficulty of problems? A 1/2-inch thick, 3 x 5 foot sheet weighs just 7-1/2 pounds, compared with 45 pounds for a similar size sheet of cement board. These multifunctional tile substrate and building panels are thus perfect for creating bonded waterproofing assemblies with tile coverings. You just need a hammer and wonderbar for the walls. Personally, I like standard drywall. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. The big issue with cement board is that the thinset will skin over really quickly. 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). A quality underlayment will also serve as a waterproof barrier between the subfloor and the tile surface. It is designed to form a waterproof layer between cement board and tiles, helping create a watertight installation. There are numerous ways to do this. It looks like you have Kerdi installed on the floor and not Kerdi Board. With Wedi products, the compound curves are easy to produce quickly. Re: Kerdi on shower curbs. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. 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. Not even the plumber's fault as it was just a bad valve. Properly waterproofing a shower area sharing a living room wall, Can I use cement accelerator to decrease setup time of modified thinset. This is a very effective and popular method of installing tile, and one that ensures the tile doesnt crack. To waterproof Hardie board, you should choose a quality sealer that is designed for use on cement-based sidings. When installing KERDI with . However, if installed on drywall, it only protects one side. 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. All it takes is the right preparation. Will use the Schluter Shower system. 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. A square foot of half-inch thick cement board weighs roughly 40 ounces, while the equivalent area of a Wedi board weighs about 75% less. Needless to say, the drywall turned to mush. Cement board is known to be very heavy and somewhat difficult to cut. 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. @JimmyFix-it - You are right. This is necessary to ensure that the membrane will adhere properly to the drywall. ".1) is is okay to use kerdi board instead of ditra on the floor? This is often accomplished by filling any holes and cracks in the wall with appropriate spackling or patching material. 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? That would tell him where the edge of the framing needs to be. . Using cement board and a sheet membrane . I trust it and have never had a callback. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Prime first to create a flat, uniform surface that is free of dust, grease and other debris. Redgard is a similar product. Blocking should be constant across this area when openings are larger than your fist. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Your real issues are the lack of proper corners on this shower. Both Kerdi Board and cement board are designed to smooth out uneven spots on the installation surface, create an unbending layer that wont flex underfoot, and also provide a waterproof barrier.