The curb doesn't have to be any wider than a 2x4. 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 (cbu) is not waterproof, but is not damaged by being wet. you should still water proof with a liquid membrane product like RedGuard. Kerdi membrane prevents water damage and mold development. ;). Kerdi Board is expensive, but I can justify it because it saves time, and it's a joy to use. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Furthermore, if another trade, such as the shower glass installers, makes a mistake then you'll be . Gettin' a little delirious. rev2023.3.3.43278. When I do another shower I'll use real cement board, not Hardi-board. 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. They are designed to provide a waterproof, vapor-tight layer to the substrate, which in this case would be the cement board. A complete schluter shower kit is like $700-$900 depending on the size - this includes the pitched foam shower pan. I also used the Kerdi drain. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. Yes, Hardie board needs to be waterproofed. Waterproofing is an important aspect of any bathroom or wet-area installation. Cement board sucks up the moisture and as a result, the kerdi doesn't always stick as well to cement board. Kerdi-Board panels allow the installer to prepare and create a broad range . There are numerous ways to do this. Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers). After roughly two days I would fill the corner with silicone. 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. if you go with vapour barrier, then cement board. All shower/tub areas should have concrete board (I prefer hardiboard). With that said, lets take a look at the importance of choosing the right tile substrate, the options you have, and which tile underlayment material you should choose Kerdi Board or cement board? Whether or not you need a Kerdi membrane is a factor of use. 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. 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. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. These multifunctional tile substrate and building panels are thus perfect for creating bonded waterproofing assemblies with tile coverings. Is a PhD visitor considered as a visiting scholar? For indoor projects and gypsum board, thinset with a latex acrylic modifier is ideal. To properly seal a cement board for a shower, its important to first properly prepare the surface. This thread is 9 years old and it's the Hardi board that's thirsty not the Kerdi. On top of that, fiber cement board is even more brittle than standard cement board, so you have to be extra careful to keep screws at least an inch from the edge to avoid breaking the board. If you are laying tile on floors that are wavy or out of level, self-leveling underlayment is a great solution. Kerdi can even be installed over drywall. When applying the primer, make sure to cover all surfaces thoroughly, as these will be completely covered by the KERDI membrane. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. 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. 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. The shower is ready for tile. The use of modified thinset adhesive could result in an inadequate bond and could lead to possible delamination. The manual can be found here: http://floorelf.com/waterproof, I would say unless you are experienced in working with Schluter-Kerdi waterproofing membrane kit, then I would say work with an easier waterproofing approach, either liquid waterproofing or a combination of liquid and traditional waterproofing (plastic covering the wood frame). As fiber cement board is similar to regular cement board, it makes sense to choose the one that is cheaper or more readily available. Let the mortar dry for 24 hours then test the shower. I have used kerdi, and I have applied it over cement board. Modified thin-set mortars must dry for the polymers to coalesce and form a hard . Personally, I like standard drywall. Is it ok to fasten a shower surround to Schluter Kerdi curb? "..2) the kerdi band isn't stuck flat -- the edges in some spots are wavy. The problem is on the back side of the drywall, which is not protected. Waterproofing cement board is relatively simple and there are several different waterproofing products available. 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. This will prevent water from entering from behind the membrane, and will provide a more secure waterproof layer. This means that even if your waterproofing system leaks, the cement board will remain intact. builder, anti-builder, rebuilder -- Retired Moderator. Additionally, all thin-set mortars should be suitable for use in wet or feature depths of up to 1/8 inch. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If your going to do the job do it right, and give professional advice pls. 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. Overall, putting Kerdi over regular drywall can be done, with the proper steps in place to properly install the membrane and its components. With Wedi products, the compound curves are easy to produce quickly. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. . Is this overkill? 4. To waterproof Hardie board, you should choose a quality sealer that is designed for use on cement-based sidings. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. x 96 in. Step 3: Apply Thinset. 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. We want that inside corner able to move. Applying a conventional cement backer board to such a structure is almost impossible. But a mortar bed does have advantages. I think the first one I used was cheap and that was part of the problem. Once its applied, the last step is to follow up the waterproof coating with a waterproof sealant. Ready to join the 100,000+ homeowners matched with pros? Though, each product comes with its own individual characteristics, and pros and cons. On the other hand, a Schlter system offers improved thermal insulation, which can help to reduce heating costs. 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. 120 sq feet including the floor. DensShield is one common brand. Self-leveling underlayment has many of the same advantages as a dry-pack mortar bed but doesnt require as much skill to install. RedGard can be used on a wide range of interior and exterior surfaces. @DMoore- OK, I agree that with redguard it would be redundant. Furthermore, if you're working in an older home KERDI-BOARD fits better than cement board in odd spaces. Both may be effective substrates, but Kerdi Board boasts significant advantages. 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. LONDON. What changes do you suggest to make Bathroom looks more updated? Redgard is a similar product. However, you do still have to take care to waterproof the seams and the fastener penetrations to create a waterproof assembly. Their lighter weight makes moving panels around during installation a cinch, which is a far cry from the heft of conventional cement board. More waste, yes, but I think you have to have a LOT of practice to hang those huge sheets like mongo does. A mortar wall is better and can be customized easier. By the time you switch from the RG application to the Kerdi installation, it should be dry. A lot of folks like using cement board but it's heavy and requires a waterproofing membrane over it. And we are using a drippy mixture, it slides off the trowel. 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. #2. ), Minimising the environmental effects of my dyson brain, Finite abelian groups with fewer automorphisms than a subgroup. If youre not careful, the boards can also leave behind abrasive sandy crumbs that can cause damage to your shower base or tub. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. First, its super lightweight compared with the rest. 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. Cement board is a heavy mess compared to drywall, and drywall is a heavy mess compared to Kerdi Board. Porcelain and ceramic tiles are stiff and hard materials, so if they are installed on an unlevel or bouncy surface they are highly susceptible to cracking. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. With Kerdi Board you get to enjoy an effective product that is lightweight, easy to cut, waterproof, and leaves behind no dust! It looks like you have Kerdi installed on the floor and not Kerdi Board. Why are physically impossible and logically impossible concepts considered separate in terms of probability? What do you mean it doesn't adhere? There is no cutting or fitting of boards, and a mortar bed is good for leveling and flattening uneven or out-of-level floors, which are common in old houses. They are available in thicknesses of 3/16, 3/8, 1/2, 3/4, 1, 1-1/2, and 2 (5, 9, 12.5, 19, 25, 38, and 50 mm). 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. Additionally, all thin-set should be allowed to cure for 24 hours before tiles are installed. Rolling pin, good, now I can throw away my magnesium float.LOLCasey. Kerdi membrane can be used on cement board, drywall, and, as you may have guessed- greenboard. The niche' intermediate shelf isn't actually attached, to enable specific placement for each unique tiling application. However if installed on drywall it is only protecting one side. They are absorbed into the surface material and help keep moisture away from the substrate surface. It worked well - just like wallpapering. Kerdi does admit that you can use cement board. 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 Kerdi is essentially replacing the backerboard. Plus, if you use the mold and moisture resistant drywall, it will be extra insurance against mold. 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. there should be a small gap between the backer board and the tub. ".1) is is okay to use kerdi board instead of ditra on the floor? Is it plausible for constructed languages to be used to affect thought and control or mold people towards desired outcomes? The colour is different. 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 board is a kind of waterproofer because these kinds of boards are made of XPS foam. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. The difference between the phonemes /p/ and /b/ in Japanese. We also found that using a heavy rolling pin worked wonders for really setting the Kerdi. Not to mention, its warrantied by Schluter, giving you the ultimate peace of mind. In . 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. If any is found, wait a few more hours and then re-inspect. Using cement board and a sheet membrane . One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. 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 screwed to the framing, thin strips of cement board fracture more easily than thin strips of fiber-cement. Welcome to the site. Important to overlap seams in a shingle method. No, that doesn't sound right. Foam-core tile backing board has two big advantages over other backer boards. All it takes is the right preparation. How "tidy" does the kerdi band need to be? Required fields are marked *. :/. We use a pump action garden sprayer and its usually dry by the time we clean the sprayer. What are the differences between "paperless drywall" and "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. #3 This is a DIY site. Re: Kerdi on shower curbs. This is the traditional tile backer. KERDI was developed as a waterproofing membrane to be used in . 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). This will help you achieve the best results and ensure the longevity of your project. We ended up sponging the Hardi and wetting and booking the Kerdi (a la wallpaper), and that made the installation go much smoother. When installation is done properly, Kerdi membrane offers a waterproof barrier that can protect the plywood below from moisture. 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.
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kerdi membrane over cement board
