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(3ft-3in wide). However, a cement board is generally easier and less expensive to replace if a repair is needed. Schulter Ditra is manufactured by Schluter Systems and is a 1/8 thick polyethylene uncoupling membrane that is specifically designed for tile installations. I have to redo my tub surround due to moisture leaks and failing grout. If you want a cement board, use Durock or Wonderboard. And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! Install the drain adapter, if needed. You can apply it on PVC, metal, slabs, walls, and floors. Kerdi 3 ft. 3 in. With Wedi products, the compound curves are easy to produce quickly. Jun 21, 2017. 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? If you are laying tile on floors that are wavy or out of level, self-leveling underlayment is a great solution. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. The cement board needs to be clean, free of debris, and dry. Why is this the case? As fiber cement board is similar to regular cement board, it makes sense to choose the one that is cheaper or more readily available. When I do another shower I'll use real cement board, not Hardi-board. And for a more secure fit, you can also use screws. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. The Kerdi-Line prefab pans and drains make me feel way more comfortable with the waterproofing. 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. The bag says Mapei floortile mortar, it was the only unmodified thinset at our hardware store. Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. Tile can be installed directly over Kerdi-Board using the thinset method; For use with ceramic and natural stone tile; Return Policy; California residents. And second, since it's foam, the board is super easy to cut with just a utility knife. It is important to seal any imperfections in the drywall to ensure a long-lasting installation and to minimize water infiltration. Schluter Kerdi 108 Sq Ft Waterproofing Membrane - amazon.com Wedi showers feature a pre-sloped base that is already installed. Given the complexity, its easy to see why even experienced tile setters avoid dry-pack mortar and use backer board instead when they can. About an argument in Famine, Affluence and Morality, Acidity of alcohols and basicity of amines. Kerdi can even be installed over drywall. you should still water proof with a liquid membrane product like RedGuard. Another advantage is that the polyisocyanurate core of foam boards is waterproof. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. 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. We also found that using a heavy rolling pin worked wonders for really setting the Kerdi. Kerdi membrane can be used on cement board, drywall, and, as you may have guessed- greenboard. All shower/tub areas should have concrete board (I prefer hardiboard). Kerdi Membrane Installation (Step-by-Step Installation Guide) 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. Kerdi Board is expensive, but I can justify it because it saves time, and it's a joy to use. When installing KERDI with . I always install it over cement board or backerboard, never over drywall, even blueboard or the mold resistant greenboard. Schluter Kerdi-Shower-T/-TS/-TT 48 in. 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 . Step 8: Allow to dry. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! We are DIYers who have already remodeled one bathroom successfully, but this is our first time using The Schluter shower system. This allows for future compression and an area at the corner where things are more forgiving. Cement board is known to be very heavy and somewhat difficult to cut. Depending on factors such as room temperature, humidity, and ventilation in the area, this could take anywhere from 1 to 3 days. Press the Kerdi Membrane into the Thinset Mortar with firm, even pressure to achieve full mortar coverage. Can you remove tile from Kerdi membrane? When applying Kerdi membrane to cement board, the edges and seams of the membrane must be lapped, meaning that each layer should overlap the portion underneath it by a minimum of two inches. If youre not careful, the boards can also leave behind abrasive sandy crumbs that can cause damage to your shower base or tub. Building Panel: Price $ 119 00 $ 202 06 $ 279 00. 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. 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. Will use the Schluter Shower system. 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. This means that even if your waterproofing system leaks, the cement board will remain intact. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. This is a very effective and popular method of installing tile, and one that ensures the tile doesnt crack. The Kerdi/Daltile TS underlayments do have some valid applications such as in steam shower installations where a bullet proof vapor barrier is required. LONDON. I barely touch it with my hands before going to the tape knife. This will help you achieve the best results and ensure the longevity of your project. Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. When applying the primer, make sure to cover all surfaces thoroughly, as these will be completely covered by the KERDI membrane. It costs more but it;s worth it for the ease of install IMO. Yes, it is possible to put Kerdi over regular drywall. What is a word for the arcane equivalent of a monastery? Well, DH said he had virtually no time to work with the stuff before it dried out, so he switched from my spritz bottle to a sponge. I set the Kerdi with my hands, pat it into the thinset with my hands, then go over it with a 4" taping knife held at a low angle to embed the Kerdi in the thinset. Mike Holmes uses backer on his show. 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. To ensure that the Kerdi is completely dry prior to tiling, inspect the inside of the membrane for any signs of moisture or condensation. 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. The Kerdi membrane should be applied with the standard procedure, using a hogg brush or a notched trowel to spread the thin-set mortar and a roller to ensure appropriate adhesion. Send us an email: , What type of thin-set mortar should I use when installing Schluter, Using a Prefabricated Shower Tray and Ramp. Ready to join the 100,000+ homeowners matched with pros? Furthermore, if you're working in an older home KERDI-BOARD fits better than cement board in odd spaces. BTW the older Kerdi thread referencedwas excellent. This allows the cement to properly hydrate, resulting in To ensure the floor is clean, wipe it with a wet sponge. Cement board is the most common and widely-known backer board. 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. 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. bathroom - Kerdi Membrane over cement backerboard - Home Improvement 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. We tried adding water to the thinset, we tried . DensShield is one common brand. Kerdi Board is suitable for a number of interior applications. Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? Kerdi Board vs. Cement Board: What Are The Major Differences? If done according to manufacturers instructions, it will seal nicely. If you want added info there's an old Kerdi thread here. A.Sean Gerolimatos, technical services manager for Schluter Systems, responds: With a few exceptions, unmodified thinset mortar is required for setting ceramic and stone tile over Kerdi membranes (800/472-4588, www.schluter.com ), as well as for bonding overlapped seams and connections to Kerdi drains. This will help to ensure that all drywall is completely covered. This is confusing since Kerdi Board has no Kerdi on it. You absolutely need to include some sort of substrate (cement board, green board, regular drywall) with the Schluter-Kerdi waterproofing kit. Backerboard plus a waterproofing membrane like Redgard is all that is needed for tub surrounds with thinset then tile. Once the adhesive has been applied and has had time to properly cure, then the KERDI membrane can be applied to the wall. 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. Ratings (91) (5) (91) (3 . ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. Spacers are the next step. Important to overlap seams in a shingle method. I agree that gypsum seems very questionable anywhere in the wet areas of a shower. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. When applying thin-set mortar, the manufacturers instructions should be followed closely. What was the indicator that let you know that spritzing was not enough, and that you needed to 'sponge' the Hardi? I simply sponge off the excess. It is a topical waterproofing layer that is put over the substrate to keep water from getting to the wood frame and nails. If cement board had been used, most likely the damage would have been much less that what I have to deal with now. Cut the Kerdi membrane to size using a utility knife or scissors. Kerdi membrane is a waterproofing material that is designed to be used in wet areas such as bathrooms and showers before tiles are installed. It doesn't matter but you absolutely need to use both a substrate and a waterproofing membrane. I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. Once its applied, the last step is to follow up the waterproof coating with a waterproof sealant. Ditra is manufactured in a 3'3 width and comes in various roll lengths (54sf, 150sf, and 323 sf). RedGard, on the other hand, is a liquid waterproofing membrane made by Custom Building Products. The curb doesn't have to be any wider than a 2x4. I still wet the walls first. Are there tables of wastage rates for different fruit and veg? KERDI BOARD: Waterproof Your Shower in 1 Day - Home Repair Tutor 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.

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