When applying the primer, make sure to cover all surfaces thoroughly, as these will be completely covered by the KERDI membrane. This feature makes building the base structure much easier and more cost . There are many different types of underlayment to choose from, but they all serve the same purpose. I also used a larger sized trowel than the one recommend by Schluter. 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. Additionally, all thin-set should be allowed to cure for 24 hours before tiles are installed. @JimmyFix-it - You are right. We want that inside corner able to move. One of the company says they are going to apply kerdi membrane on the drywall, then tiles onto the kerdi membrane, and as such as cement backboard would not be required. The bag says Mapei floortile mortar, it was the only unmodified thinset at our hardware store. 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. 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. 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. Make sure the floor is level in the shower. Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar must be used to construct all KERDI seams to ensure watertightperformance of the system. Their lighter weight makes moving panels around during installation a cinch, which is a far cry from the heft of conventional cement board. They can be installed on any type of support and can even be used to create partitions, with no structural support required. A quality underlayment will also serve as a waterproof barrier between the subfloor and the tile surface. A hundred times better to have too much before you comb than too little. 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. What's the difference between a power rail and a signal line? 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. Is this overkill? 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. If a pipe or faucet ever leaks in the wall this will ruin your shower. This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. 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. 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. This is confusing since Kerdi Board has no Kerdi on it. I like to use a garden sprayer to keep the thirsty Kerdi wet. If you preorder a special airline meal (e.g. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. Given the complexity, its easy to see why even experienced tile setters avoid dry-pack mortar and use backer board instead when they can. Fixing that is not that easy though. Retired Moderator - Theatre Guy (and computers). Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. Slap it up comb it out, leave every ridge tall and perfect. Plus, if you use the mold and moisture resistant drywall, it will be extra insurance against mold. Your Get free, zero-commitment quotes from pro contractors near you. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. 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. FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. I don't want to use the Ditra membrane product but rather tiles directly over the cement boards. The gridlines printed on the surface are beneficial for the installation process, also allowing for quick, neat cuts with a utility knife. Additionally, a liquid water-resistant membrane should be applied over all surface areas before installation. Personnaliser mon exprience l'aide de cookies, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, epoxy or marine paint over greenboard for my shower walls (not tile), Need advice on bathroom remodel - using hardiebacker boards, HELP! The difference between the phonemes /p/ and /b/ in Japanese. x 5-ft. and 3 x 5-ft. sheets of cement board are sized for efficient use around bathtubs and showers. We are DIYers who have already remodeled one bathroom successfully, but this is our first time using The Schluter shower system. (3ft-3in wide)Or will the Kerdi membrane (with seams taped with kerdi band) prevent each board from moving . I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. Yes, you should prime drywall before installing KERDI in order to ensure proper adhesion and a successful installation. 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. Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. When it comes to applying KERDI, however, it is advised to use a regular thinset that includes portland cement as its main component. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. You'll know the RG is dry when it turns reallllly dark bright red as opposed to the pinkish color when applied. 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? This will include installing its components, such as drain plate and drain collar, as well as Kerdi Band for further protection of seams and corners. 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. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. Kerdi Board is expensive, but I can justify it because it saves time, and it's a joy to use. x 60 in. 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. 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. Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers). Allow the adhesive to cure for the amount of time recommended by the adhesives manufacturer. It is easier to cut than cement board, it is mold resistant, and it has a built-in moisture barrier. Shouldn't take too long, maybe an hour or so. Yes, it is recommended to waterproof cement board, especially if it is going to be used in exterior settings or in places where it will be in contact with water. Important to overlap seams in a shingle method. #2. However, a cement board is generally easier and less expensive to replace if a repair is needed. 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. The Kerdi/Daltile TS underlayments do have some valid applications such as in steam shower installations where a bullet proof vapor barrier is required. Cement board is particularly vulnerable to water damage, so waterproofing can help protect it and help it last longer. If your going to do the job do it right, and give professional advice pls. In normal residential use I wouldn't worry about it. Seems like I've been using the full measure of water the bag calls for, plus about 10%.-50 lbs of thinset at a time is too much for an amatuer. It also features fleece webbing that allows for effective anchoring into thin-set mortar. :/. That was not a fault of the Kerdi, or the installation. Politique d'Utilisation des Cookies de Houzz. Anytime Mongo. The cement board needs to be clean, free of debris, and dry. There's a really great manual (with diagrams) that makes this all easier to understand. I just a few weeks ago put kerdi on top of hardi-board in my shower and it was PAINFUL! However, you do still have to take care to waterproof the seams and the fastener penetrations to create a waterproof assembly. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . How to adhere edge of bullnose tile to drywall as trim for shower/tub surround. Its important to note that Kerdi membrane is not a structural base layer, so plywood should be installed and reinforced as necessary based on load requirements. For the floor I make a dry mix mud base and then the Kerdi membrane. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. Learn more about Stack Overflow the company, and our products. Applying a conventional cement backer board to such a structure is almost impossible. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. This is a bit difficult to answer as it depends on the particular application for the floor system. Most cement-based thin-set mortars are suitable; however, it is important to check the manufacturers instructions to ensure that the product is approved for use with Schluter systems. I would get someone else. What precautions should I take installing tile on a backerboard in an area surrounded by cement?
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