Need help liner vs liquid membrane question. It is a topical waterproofing layer that is put over the substrate to keep water from getting to the wood frame and nails. Rolling pin, good, now I can throw away my magnesium float.LOLCasey. 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. rev2023.3.3.43278. It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. 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. The thickness of the tile is important, and should be known, but not because it changes the method of building. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. After today's tutorial, you'll gain the confidence to transform your old bathroom into a new space. ", Signed,Never Hung Kerdi A Day In Her Life. Thanks. That's the way us "Tile Guys" do it all the time. To learn more, see our tips on writing great answers. there should be a small gap between the backer board and the tub. 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. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. It is a pliable waterproofing membrane that also doubles as a vapor retarder. 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. This will help to extend its lifespan and make sure it looks its best for years to come. Sloped Shower Tray KST1220/1525 - The Home Depot. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. 120 sq feet including the floor. Once the wall is prepped, use a primer that is compatible with the KERDI membrane so that it will properly adhere to the wall. The Kerdi-Line prefab pans and drains make me feel way more comfortable with the waterproofing. As fiber cement board is similar to regular cement board, it makes sense to choose the one that is cheaper or more readily available. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. 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. A quality underlayment will also serve as a waterproof barrier between the subfloor and the tile surface. Like cement board, the boards are heavy and hard to cut. Portland cement-based unmodified thin-set mortars are dependent on the presence of moisture for hydration in order to gain strength. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. Why you use cement board? 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. Learn more about Stack Overflow the company, and our products. We are still most comfortable with full plumber's pan over the curb, including glue-on preformed corners, and also a second layer (usually Kerdi but can be paint-on) on top of CBU wrap over curb. x 48 in. Glass mat gypsum board is a better choice. Once this is done, continue the installation by following the directions for the particular Kerdi product being used. It's still applied to cement board. It installs with screws, then you tape the joints & screw holes and install your tile. Probably the simplest way is to caulk the gap with 100% silicone or a urethane sealant. Some being easier to work with than others. We ended up sponging the Hardi and wetting and booking the Kerdi (a la wallpaper), and that made the installation go much smoother. Hardie board is thirsty, but that's way too fast. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. . You can apply it on PVC, metal, slabs, walls, and floors. Yes. Kerdi Board panels have a number of other advantages: they can be cut to size using an ordinary utility knife, can be glued or screwed into place, and are very lightweight. Do you have any pictures? Is it suspicious or odd to stand by the gate of a GA airport watching the planes? You don't want to block off the end of the air chanel and trap half a sheet worth of air under there.-Not paying attention to the direction of my knife. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? I also used the Kerdi drain. I don't want to use the Ditra membrane product but rather tiles directly over the cement boards. I have corrugated metal shower surround & grab bars. The cement board can also become weakened and start to flake away when it absorbs moisture, causing ugly spots and patches to start appearing on the wall. Installation. Should I redo this wall to avoid a mold sandwich? Ceramic Tile Advice Forums - John Bridge Ceramic Tile, http://www.youtube.com/watch?v=G4HjHT6_cUo, http://www.youtube.com/watch?v=wEt6irjJCI0, My master suite addition & full bath to 1/2 bath renovation. 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. They can be installed on any type of support and can even be used to create partitions, with no structural support required. 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. Why does the plumbing rough need to be moved? The completed assembly takes the place of more traditional backer board when installed over 3/4-inch wood subfloors. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. Fiber cement board is a variation of cement board that is made from compressed cement and sand and reinforced with wood fibers throughout. The cement board needs to be clean, free of debris, and dry. Cement board (cbu) is not waterproof, but is not damaged by being wet. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. 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. #3 This is a DIY site. The niche' intermediate shelf isn't actually attached, to enable specific placement for each unique tiling application. 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. Manufactured by Schluter Systems, Kerdi Board is a multifunctional tile underlayment and construction panel, that can also be implemented for forming bonded waterproof assemblies with tile coverings. It is lightweight and made of expanded polystyrene. Not everyone knows how to do mud and lathe it's so old school plus it wears you out, ive been a setter for 27 yrs and I have yet to go back to one of my showers I installed using perma base or durock, with a liner, i have started using waterproofing such as redguard or aqua-defense. When installed, Kerdi Board creates a substrate that is level, flat, square, plumb, and dimensionally stable. Kerdi membrane can be used on cement board, drywall, and, as you may have guessed- greenboard. Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. Jessica considers herself a home improvement and design enthusiast. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. 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. see Prop 65 WARNINGS. 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. The best answers are voted up and rise to the top, Not the answer you're looking for? The shower tray eliminates the need for a mortar bed. When installing KERDI with . To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Well, I'm going to give you three different ways to seal the backer board at the tub flange. Any recommendations? The grid lines on the surface are incredibly helpful for installation and making neat cuts. RedGard can be used on a wide range of interior and exterior surfaces. And we are using a drippy mixture, it slides off the trowel. 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. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. First, you would waterproof with your favorite liquid waterproofing membrane of . We tried soaking the cement board and applying the kerdi in small sections. Cut the Kerdi membrane to size using a utility knife or scissors. Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. We sponge water onto the cement board. When applying the thin-set, it should be applied in such a way that it fully fills any empty space between the Tile and Schluter product and is solid enough to support the weight of the tiles being installed. 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. But there are downsides. You just need a hammer and wonderbar for the walls. Good luck with your project. First Kerdi can be installed on drywall or cement board. They are designed to provide a waterproof, vapor-tight layer to the substrate, which in this case would be the cement board. Since KERDI is impervious, it does not deprive the mortar of its moisture. Furthermore, if you're working in an older home KERDI-BOARD fits better than cement board in odd spaces. Regardless, cement board is a great, trusted tile substrate that will work well on both walls and floors. We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. 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). Now there's nothing particularly wrong with fiber-cementit's just not my first choice. Both may be effective substrates, but Kerdi Board boasts significant advantages. With Wedi products, the compound curves are easy to produce quickly. One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. When it comes to applying KERDI, however, it is advised to use a regular thinset that includes portland cement as its main component. This flexible polyethylene layer is easy to install and can protect the tile from both cracking and moisture. I still wet the walls first. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. You provide the pitch during the tile set. The problem is on the back side of the drywall, which is not protected. 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. If a pipe or faucet ever leaks in the wall this will ruin your shower. That was not a fault of the Kerdi, or the installation. I will say that to is easier to put the membrane over drywall than cement board. 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. It could take longer if the space is particularly wet or humid. Underlayment is designed to smooth out uneven areas of the subfloor and form a rigid layer that prevents the flooring from bending. Your air bubbles will travel along the valleys you've made, and it's way better if you only have to move them 20 inches to the nearest edge rather than all the way from the ceiling to the floor [Again, Mongo can, but he has mad skills].-Not paying attention to the principle of bedding top down, center out. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. Step 4: Place the Tile. 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. Maybe try another brand of thinset? The surface of Wedi is perfect for bonding. An extra layer of thinset is then added to the surface of the cement board to adhere the tiles in place. Plus, if you use the mold and moisture resistant drywall, it will be extra insurance against mold. Both may be effective substrates, but Kerdi Board boasts significant advantages. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. Using cement board and a sheet membrane . Make sure the floor is level in the shower. 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. Go with smaller bags or only mix half. 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. Yup! I barely touch it with my hands before going to the tape knife. Why is this the case? I guess I could save a few $ and laminate 1/4" drywall there instead.IOW, is hardi OK to level out the tub flange?Not that it matters, but the tile will be 3x6 carrara to the ceiling.Casey. We don't expect people to master this and in fact I know maybe two guys in my area (live in big city) that could do this. 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. En cliquant sur Accepter , j'accepte l'utilisation des cookies telle qu'elle est dcrite plus en dtail dans la Politique d'Utilisation des Cookies de Houzz. Also are you saying that you wet ("booking the Kerdi") the Kerdi, as well? that's home depot homeowner installation method. x 60 in. WATCH HERE: https://www.youtube.com/watch?v=3TRLd2HYhbU&list=PLO47JMsdYGrkxM_ZkOc3lMnsVhTqj80bB#justdoityourself #lovingit #p. Cement board is a good, reliable backer board that works well on both floors and walls. It costs more but it;s worth it for the ease of install IMO. I ended up putting up a thin, skim-coat of thinset all over the hardi board, letting it dry, and then putting up the kerdi. Are there tables of wastage rates for different fruit and veg? This will ensure a strong bond between the KERDI membrane and the substrate. Step 7: Cut the Tile. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Spacers are the next step. I posted a plea for help and Mongo and Bill both gave me good advice. Applying a conventional cement backer board to such a structure is almost impossible. Answer (1 of 3): Schluter recommends applying Kerdi over drywall for walls, however, my local building code will not permit this practice - the local building code requires cement backer on the walls of a shower enclosure, therefore, I have done this successfully many times. However if installed on drywall it is only protecting one side. Prime first to create a flat, uniform surface that is free of dust, grease and other debris. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Sheets of glass mat gypsum are made from water-resistant silicone-treated gypsum, reinforced on both sides by fiberglass mats. Waterproofing cement board is relatively simple and there are several different waterproofing products available. 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. But I can't give you a +1 because telling someone to mortar all the walls in a large shower is like telling them to make an ice sculpture. Additionally, the drywall should be primed with a latex primer before applying the Kerdi membrane. 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. It looks like you have Kerdi installed on the floor and not Kerdi Board. I'm thirsty. I like to use a garden sprayer to keep the thirsty Kerdi wet. 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 Cement board is particularly vulnerable to water damage, so waterproofing can help protect it and help it last longer. The perfect fold is tricky and many of my first steam showers where built without the sealed slip joint. link to What Kind Of Paint For Garage Walls? The cement board core itself is not waterproof, but it can withstand water without falling apart. "..2) the kerdi band isn't stuck flat -- the edges in some spots are wavy. She grew up surrounded by constant home improvement projects and owes most of what she knows to helping her dad renovate her childhood home. Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. This liquid waterproofing solution does more than keep water away, it also promotes tile adhesion and prevents cracking. Even the tiling subs have moved away from mortar walls because of the labor cost and lack of craftsmen in the industry. @JimmyFix-it - You are right. the cost of the tile job. The foam core surrounded by synthetic cloth on both sides and adhered with resin glue is. 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. Once you have determined the type of thinset, its important to also consider the weather conditions during installation. Finally, it is important to remember that any thin-set that has been exposed to moisture must be replaced. http://www.schluter.com/schluter-us/en_US/Shower-System/KERDI-SHOWER-KIT/Schluter%C2%AE-KERDI-SHOWER-KIT/p/KERDI_SHOWER-KIT, We've added a "Necessary cookies only" option to the cookie consent popup. 4. Kerdi Board is expensive, but I can justify it because it saves time, and it's a joy to use. modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. If you can paint a wall, you can use RedGard. If youre not careful, the boards can also leave behind abrasive sandy crumbs that can cause damage to your shower base or tub. 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. The waterproof membrane isn't a substitute for the substrate. That would tell him where the edge of the framing needs to be. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. What's the difference between a power rail and a signal line? ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. Without an underlayment, even the slightest movement of the subfloor can result in cracking of the tile and crumbling of the grout lines. You troweled on thinset combing it out then pressed the Kerdi into place? 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. if you go with vapour barrier, then cement board. ), Minimising the environmental effects of my dyson brain, Finite abelian groups with fewer automorphisms than a subgroup. However, the answer you provided above suggests that the OP could omit a waterproof membrane, that I. The 30-in. Bulk update symbol size units from mm to map units in rule-based symbology. Jun 21, 2017. When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. 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. How long should I wait after painting on the Redgard before I try to reapply the membrane? Installation; As the GoBoard is very lightweight, it becomes easy to . Builder saying he doesn't want to put my trim tile in here. I hope you made the guy flood test his work prior to tiling the shower floor. Kerdi Membrane is a product of Schluter systems. Cement board is a mineral-based board, usually 30 inches by 60 inches, that is used as a lower, dimensionally stable surface for installing ceramic tile, porcelain tile, or stonework. Putting this stuff on walls is difficult and time . 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. Properly waterproofed Hardie board should last for many years. If you want to go to the extra effort of putting the membrane over drywall, there is no need to use greenboard. vegan) just to try it, does this inconvenience the caterers and staff?
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