kerdi membrane over cement board

I always install it over cement board or backerboard, never over drywall, even blueboard or the mold resistant greenboard. Thanks to all for the feedback. 120 sq feet including the floor. These multifunctional tile substrate and building panels are thus perfect for creating bonded waterproofing assemblies with tile coverings. This is a bit difficult to answer as it depends on the particular application for the floor system. Step 1: Measure the area. 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. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. All shower/tub areas should have concrete board (I prefer hardiboard). link to What Kind Of Paint For Garage Walls? ! Such membranes typically come in a brush or a roller form and can help create a durable barrier against water infiltration. Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. Recovering from a blunder I made while emailing a professor, Minimising the environmental effects of my dyson brain. Finally, it is important to remember that any thin-set that has been exposed to moisture must be replaced. First, you would waterproof with your favorite liquid waterproofing membrane of . The 1/4-inch-thick board is typically used on floors and countertops. I trust it and have never had a callback. Depending on factors such as room temperature, humidity, and ventilation in the area, this could take anywhere from 1 to 3 days. 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. 4. Hardi is definitely a "thirsty" substrate but will work, even without a primer of RedGard. It looks like you have Kerdi installed on the floor and not Kerdi Board. For the floor, he should've put a mortar bed, then a membrane that goes over the curb, then another mortar bed. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. Underlayment is designed to smooth out uneven areas of the subfloor and form a rigid layer that prevents the flooring from bending. Schluter Kerdi-Shower-T/-TS/-TT 48 in. 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. Yes, KERDI membrane will stick to cement board. 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. Kerdi can be installed first on drywall or cement board. Blocking should be constant across this area when openings are larger than your fist. Learn more about Stack Overflow the company, and our products. The Kerdi is essentially replacing the backerboard. Needed to interject a little "amateur humor. DIYers on this forum seem to have nothing but problems with Hardi. It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. 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. Rolling pin, good, now I can throw away my magnesium float.LOLCasey. You can apply it on PVC, metal, slabs, walls, and floors. Problem with very thick cement board/ tile/bullnose edge, Steam Shower Slip Joint Detail - The secret is in the boarding stage. It allows you to easily and quickly create tile-ready elements in bathtub surrounds and platforms, vanities, showers, shelving, and much more. This is the traditional tile backer. that's home depot homeowner installation method. Cementboard sufficient to a tub surround is dirt cheap .vs. It is easier to cut than cement board, it is mold resistant, and it has a built-in moisture barrier. That's the way us "Tile Guys" do it all the time. Cement board (cbu) is not waterproof, but is not damaged by being wet. Maybe try another brand of thinset? I also used the Kerdi drain. We sponge water onto the cement board. Sure, you can do it.just be sure to "spritz" or wet the hardi thoroughly before.it's pretty "thirsty.". if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'remodelormove_com-mobile-leaderboard-1','ezslot_24',166,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-mobile-leaderboard-1-0');If cement board is not waterproof, it can negatively impact the integrity of the tile that is installed on top of it, and can lead to a variety of issues. I guess that why it was so frustrating that cement board is just sooo thirsty. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. Kerdi membrane is a waterproofing material that is designed to be used in wet areas such as bathrooms and showers before tiles are installed. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. It's not a matter of trusting the Kerdi. 173 upvotes. When I do another shower I'll use real cement board, not Hardi-board. Foam-core tile backing board has two big advantages over other backer boards. 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. Installation; As the GoBoard is very lightweight, it becomes easy to . 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. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. Cement board sucks up the moisture and as a result, the kerdi doesn't always stick as well to cement board. If you ensure that silicone goes in and that the thin-set and grout do not bind there you should be good to go. The grid lines on the surface are incredibly helpful for installation and making neat cuts. Is it ok to fasten a shower surround to Schluter Kerdi curb? Well, I'm going to give you three different ways to seal the backer board at the tub flange. Its essential to protect surrounding wall and floor surfaces from water or moisture damage that can occur in these areas. Step 7: Cut the Tile. The Kerdi/Daltile TS underlayments do have some valid applications such as in steam shower installations where a bullet proof vapor barrier is required. #2 - Your suggestion has plenty of merit though. Contact us: 888-472-4588 However if installed on drywall it is only protecting one side. The main issue caused by non-waterproof cement boards is the eventual warping and damage to the tiles, making it difficult and costly to fix without removing all the tile and starting over. 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. Good luck with your project. Step 2: Determine the room's center. Need help liner vs liquid membrane question. Think about movement. Why is this the case? Cement board comes both in 1/4-inch-thick and 1/2-inch-thick versions. I've never had a failure. When having to put it up on the wall or measure it for size, you will find that you can get the exact measurements you need without much trouble. I posted a plea for help and Mongo and Bill both gave me good advice. If so, that means breaking up the floor pan. 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? Jun 21, 2017. And how do you keep too much water from interfering with the adhesion in the second scenario?Thanks!! Is it plausible for constructed languages to be used to affect thought and control or mold people towards desired outcomes? Kerdi Board vs. Cement Board. One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. To line niche shelves, for instance. Can you remove tile from Kerdi membrane? I have to redo my tub surround due to moisture leaks and failing grout. 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, such as from a plumbing leak, or from infiltration on an exterior wall (as unlikely as that might be). Allow the primer to dry completely before proceeding with the KERDI installation. It is important to seal any imperfections in the drywall to ensure a long-lasting installation and to minimize water infiltration. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. However, if installed on drywall, it only protects one side. In my. No, that doesn't sound right. When it comes to applying KERDI, however, it is advised to use a regular thinset that includes portland cement as its main component. 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 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. The cement board needs to be clean, free of debris, and dry. By: Author Olin Wade (Remodel or Move Stuff). 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. Backerboard plus a waterproofing membrane like Redgard is all that is needed for tub surrounds with thinset then tile. Once its cleaned, use caulk to seal all of the seams where the cement board meets the walls. 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. You have to seal every little hole in the floor so the underlayment doesnt seep into spaces below. Asking for help, clarification, or responding to other answers. Once all areas have been properly waterproofed, the walls can be tiled and grouted to create a waterproof surface. Additionally, all seams should be sealed with Kerdi Fix and covered with fleece. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. A quality underlayment will also serve as a waterproof barrier between the subfloor and the tile surface. Kerdi's systems are fairly reputable. 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. All it takes is the right preparation. 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. A place where magic is studied and practiced? The 30-in. 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. Additionally, the drywall should be primed with a latex primer before applying the Kerdi membrane. It could take longer if the space is particularly wet or humid. I would fear leaks in all corners of this shower. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. Why you use cement board? With Wedi products, the compound curves are easy to produce quickly. I would get someone else. However, a cement board is generally easier and less expensive to replace if a repair is needed. Cement board is readily available and relatively inexpensive (about $10 for a 3 x 5-ft. sheet). The niche' intermediate shelf isn't actually attached, to enable specific placement for each unique tiling application. LONDON. The best answers are voted up and rise to the top, Not the answer you're looking for? Whether or not you need a Kerdi membrane is a factor of use. Installing cement board involves placing the boards atop a layer of thinset adhesive, a process known as bedding. If you want to go to the extra effort of putting the membrane over drywall, there is no need to use greenboard. In a perfect job, it will waterproof. Waterproofing is an important aspect of any bathroom or wet-area installation. 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 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? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Kerdi-Shower-T/-TS/-TT is a prefabricated sloped shower tray with integrated Kerdi waterproofing. Do you have any pictures? If cement board had been used, most likely the damage would have been much less that what I have to deal with now. Send us an email: , What type of thin-set mortar should I use when installing Schluter, Using a Prefabricated Shower Tray and Ramp. 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. This will ensure that the coating sticks to the cement board. Cement board is a good, reliable backer board that works well on both floors and walls. 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. 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. Here's how to get it right the first time, If you've got a steady hand, a few easy-to-find supplies and patience, you can install a tile backsplash in a kitchen or bathroom, Step 4 in swapping your tub for a sleek new shower: Pick your waterproofing materials and drain, and don't forget to test, Work with your contractors and installers to ensure a safe, stylish curb that keeps the water where it belongs, Get the benefits of a time-honored ritual without firing up the coals, thanks to easier-than-ever home steam systems, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Out With the Old Tile: 8 Steps to Prep for Demolition, Convert Your Tub Space Into a Shower Waterproofing and Drainage, Steam Showers Bring a Beloved Spa Feature Home. 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? What I would be most scared off is the fact that no inside or outside corners appear to have been used. What's the difference between a power rail and a signal line? 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. 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. Take care to cut the KERDI membrane to the appropriate size and apply it to the wall, ensuring that it is properly adhered and that the edges are sealed with KERDI sealant. Why is there a voltage on my HDMI and coaxial cables? Once its applied, the last step is to follow up the waterproof coating with a waterproof sealant. If he did the framing for the shower, then in order to measure for it correctly, he would need to know how thick the tile is so that he can avoid exactly this problem. Your real issues are the lack of proper corners on this shower. With cement board as a substrate, the key is to ensure proper installation of the membrane. They are designed to provide a waterproof, vapor-tight layer to the substrate, which in this case would be the cement board. Though, each product comes with its own individual characteristics, and pros and cons. We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. GoBoard is a kind of backer board because the main elements of a backer board are cement, silica, fiberglass, etc. Thanks to Mongo's earlier post, we knew we'd have to spritz the Hardi -- but found that even that wasn't quite enough. Even the tiling subs have moved away from mortar walls because of the labor cost and lack of craftsmen in the industry. 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. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. The drywall's back side fails, and it's just as bad or worse than it was on the tile side. For the floor I make a dry mix mud base and then the Kerdi membrane. And by 'booking the Kerdi' I mean we put it in the bathtub, sprayed it with the handshower, then booked it (just like wallpaper). Kerdi does admit that you can use cement board. 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 prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. Furthermore, if another trade, such as the shower glass installers, makes a mistake then you'll be . 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. It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. With so many different types of underlayment to choose from, it can be hard to decide which is best for your project. PROBLEM SOLVED for Tub Flange when Installing Cement Board and Tile. And for a more secure fit, you can also use screws. If your going to do the job do it right, and give professional advice pls. I agree that gypsum seems very questionable anywhere in the wet areas of a shower. And second, since it's foam, the board is super easy to cut with just a utility knife. Why do small African island nations perform better than African continental nations, considering democracy and human development? I usually use Durock. see Prop 65 WARNINGS. 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. 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. Ideally the DalSeal TS would fold into the gap between the wall and ceiling concrete board. First, its super lightweight compared with the rest. The curb doesn't have to be any wider than a 2x4. 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. Cement board is the industry standard when it comes to tile substrates and the most preferred among professionals when installing porcelain or ceramic tile. 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. While cement board is a reliable tile underlayment, it isnt completely waterproof only water-resistant. It also features fleece webbing that allows for effective anchoring into thin-set mortar. ps, now that you don't need it anymore you can throw that useless cheap piece of crap magnesium float my way. 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. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. If any is found, wait a few more hours and then re-inspect. Once youre sure that the membrane is completely dry, you can then move forward with tiling. Removing bathroom tile from cement backerboard, Transition from KERDI membrane backed, to not backed. Using cement board and a sheet membrane . Learn more about Stack Overflow the company, and our products. Sledge hammers for the floor, that might take a bit of time. If you are laying tile on floors that are wavy or out of level, self-leveling underlayment is a great solution. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'remodelormove_com-leader-2','ezslot_21',165,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-leader-2-0');Once the seams are sealed, lay down a waterproof coating to the floor and walls of the shower space.