I would not use a liquid membrane over a Kerdi tray. OSB boards are good at sucking in moisture. On the surface, OSB may look fragile. Thats because the thinset, once applied, cures very quickly. Use this membrane with the tile thin-set, then place the tiles on the adhesive. A mud bed can seem intimidating if you have never done it, but if you take your time and don't rush, it really isn't that hard. Acrylic is one of the most durable materials used in the shower construction industry, and for good reason. To allow for greater movement, the center section of the KERDI-FLEX can be tucked into the cavity of the expansion joint prior to bonding. residential bathroom installations designed for foot traffic. Henry makes one called liquid backerboard that is designed to get to a feather edge over OSB or ply (I'm sure on ply, double-check over OSB). This allows the cement to properly hydrate, resulting in a strong, dense bond coat. Waterproof, multifunctional tile substrate and building panel. Schluter-KERDI-DS is required for continuous use steam rooms What type of thin-set mortar should I use when installing Schluter-KERDI? ..your opinion on shimming up the shorter pre pitch sticks?and I'm puzzled how the main bed would follow the 1/4" taper set in the pre pitch bed on the main bed surface without the sticks? Work your way aound the shower, placing and packing mud as you go. How do I perform one on the Schluter-Shower System? Thanks again for your advice Jim, I appreciate it. Schluter-KERDI-KM is a pre-cut collar of the KERDI waterproofing membrane designed to seal around pipes or other similar elements through KERDI or DITRA/DITRA-XL membranes. DITRA is a polyethylene membrane with a grid structure of square cavities, each cut back in a dovetail configuration, and an anchoring fleece laminated to the underside. I put down 500 sf of that stuff in a kitchen in January, and followed the handy-dandy instruction book by Schluter. Schluter-Systems requires the use of Schluter SET , ALL-SET , FAST-SET, or an unmodified thin-set mortar meeting Can I use a premixed thin-set mortar to install Schluter-KERDI and tile in my shower? Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. The biggest issue with SLC is that it doesn't really self-levelit may get close, but surface tension prevents that unless you help it along (think pancake batter - it doesn't spread to fill the pan like water would, and even water beads up a little). Either will work to anchor the foam pan. a buddy said J Bridges is now saying he uses modified on top and underneath too. The Kerdi seems very well adhered to the plywood. Quick update to everyone that has been of help to me. You can do it either way. Tiles moved.Went to try and pry out now unlevel tiles and 'voila', they just lifted right out. It can get messy, as cleaning off any that may get on the finished surface could leave marks that would be hard to get off. Schluter-Systems does not recommend the use of premixed thin-set mortars (mastics/adhesives) in any KERDI installation. I accidentally poked a hole through the Schluter-KERDI while installing the membrane. An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. Cut KERDI to size prior to application. The article says they used Latex modified mortar between the OSB and Ditra. KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. On the clean OSB floor, measure and cut the DITRA, ensuring that it fits perfectly. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. Unmodified thin-set mortar is recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. All shower trays feature integrated KERDI waterproofing and are designed specifically to integrate with the KERDI-DRAIN. It only needs about 1/8" to achieve the 1/4"/foot value. Hello! Only use Schluter screws and washers to attach KERDI-BOARD to the studs. Hi Danny. Thanks for the reply Robert. If you were using a mud floor as your base, having the floor a little uneven wouldn't matter. Besides Schluters recommendation, several experts have used DITRA as an uncoupling membrane for tile installation over OSB. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. 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. Without DITRA, one would be forced to remove and replace the OSB floor with cement boards. No gypsum levelers ! Danny, this the same master bath you have an earlier thread about? Wait 24 hours after the membrane (i.e., Schluter-KERDI-BAND and Schluter-KERDI) installation is complete to allow for the final set of the mortar and to ensure waterproof performance of the assembly at seams and connections before water testing. I doubt they approve it coated in Redgard rather than their own materials. That's what it was designed to be applied over in most applications, but I'd use 3/4" ply for the seating area. I would just prime with a latrex bonding agent, let it dry 'till tacky and go for it. Please note that you need 48 hours for full cure on the Kerabond. When you set the curb, try to get a little slope into the shower with it. If that is the case, I am assuming Versabond is ok? DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Kerdi Trouble - Testing it, have concerns. So what does all this mean? How are you going to handle the butt joints perpendicular to the joists of your new and old OSB? Any specific type/brand to look for? Can you use green board for shower walls? Why Does He Look At Me When Im Not Looking? A quality unmodified thinset should be used and mixed with a latex additive. This membrane features an anchoring fleece on both sides to anchor it in thin-set mortar. The seam in the middle I would think could be whichever you prefer. With KERDI-BOARD, you can build custom vanities, shelving units, bathtub surrounds, free-standing partition walls, kitchen islands, and so much more. JLC Online: Best practices for professional builders and remodelers. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Seems like a decent choice when no other is readily available. Happy Friday good people. For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. Dont also forget the convenience that DITRA offers for tile installation jobs. Prior to setting tile, wait 24 hours to allow for final set of the mortar before testing to ensure waterproof performance of the assembly at seams and connections. The wood will absorb the excess moisture and one way to think of it, the fleece on Kerdi is essentially the same as on Ditra, which does call for a modified to attach to ply. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. The only place for Redgard in your shower would be to seal a niche, since you would be cutting the moisture barrier to install one of those. Tile will go over the kerdi. Schluter -DITRA and DITRA-XL are specifically designed for ceramic and stone tile installations. The only time I've used Ultraflex with a Schluter product is when I adhere Ditra to a plywood substrate, if you put Ditra over a SLC you need to go back to unmodified. Support answered that they recommend modified. Used unmodified as called for between ditra and tile. Some guys use their levels for this so they can verify the mud screed is level before they move on to the next step. There are two methods to seal KERDI to a bathtub. New posts are no longer possible, but the collected work of building professionals sharing information remains available here as a resource to the JLC community. This includes dirt and dust. When discussing the steps of installing DITRA over OSB, we mentioned that you should mix up the thinset so that its not too thick or thin. Building mud screeds along that line is fairly simple, just pile a row of mud against the wall so it covers the line by about an inch, then using a straight board, press the mud down until you can just see the line again. The Kerdi system is installed using thin-set mortar. Waterproofing corners Schluter-KERDI-KERECK. Is this going to be a mud job? Does Schluter-KERDI waterproofing membrane have a front/back to it? What material is used behind shower walls? You should be good to go anytime now. Schluter recommends different sizes. No brand recommendation from me. DITRA-HEAT-DUO features an integrated bonding fleece that provides sound control, as well as a thermal break. Makes things a lot easier. First Kerdi can be installed on drywall or cement board. If you can tile a shower you can do a mud bed. Follow the Wood Underlayment installation guidelines as found in the Schluter-DITRA or Schluter-DITRA-HEAT Installation Handbooks for fastening guidelines. While cement backer boards are moisture-resistant, they are not waterproof. If you intend to install another type of floor, such as hardwood, there is no need for DITRA. houndzilla the modified cured differently (or was it the unmodified?) CEMENT based only !!!!! Install KERDI-SEAL-PS pipe seals at showerhead, body sprays, etc. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. >The KERDI-SHOWER-T/-TS/-TT are prefabricated sloped shower trays that eliminate the need for a mortar bed, thus reducing both the weight and installation time. I have two pieces of marble that will need to be cut to create a shower curb cap (2-42" pieces to join to fill a 60" curb). Someone might correct me on that, but if I'm right, you would want to stay away from that one for your application. Well, im fearful but interested. Ditra allows modified thinset to lay the Ditra down, but requires unmodified TS when setting the tile on the Ditra. SawStop's Portable Tablesaw is Bigger and Better Than Before, Podcast 530: PRO TALK With Architecture Student Phillip Schladweiler, Podcast 529: Cold Floors, Galvanic Corrosion, and Siding Over Board Sheathing. Do I need to prime plywood before tiling? Please call Schluter-Systems Can I install Schluter-KERDI over drywall in my tiled shower? Mix a bit more than you think you need and get after it. 6. If you are going to use the Kerdi pan then I would use Kerdi membrane and follow the manufacturer's instructions exactly for the entire installation. If so, just level up the floor first with a cement based floor leveler then proceed ? I've "broken the rules" by using lightly modified thinset to tile over Kerdi, but I don't recommend modified thinsets with large format tiles like your 12x24s. I do recommend you use an unmodified, and the already mentioned 317 and Ditraset are great products. I'll recommend Mapei's Kerabond as a very good unmodified thinset too. Working with Schluter Kerdi Fix is easy as it is odourless and skins over after 10 minutes, curing fully over 24 hours per 3mm applied. Wait 24 hours after the membrane (i.e., Schluter-KERDI-BAND and Schluter-KERDI) installation is complete to allow for the final set of the mortar and to ensure waterproof performance of the assembly at seams and connections before water testing. Tile is installed over DITRA using the thin-bed method in such a way that the mortar becomes mechanically anchored in the square, cutback cavities of the matting. Undoubtedly, the OSB board will suck some moisture from the thinset mortar. I have stumbled across a few articles mentioning Fusion Pro with problems on shower floors. 2. A water test is a quality control check performed on any shower installation before setting tile. The use of really cold water might give you an extra minute or two. Calculate all your membrane requirements for your project. That can be mitigated by using DITRAs waterproofing capabilities. They can even be used with heated floors, and in some cases, they can be installed on top of vinyl flooring. 173 and followed their instructions, laying down 3/4 OSB down and Profile that forms a splashguard in curbless showers. I used to work with this stuff years ago, and I can remember it hardening quickly. We just read the article in Fine Homebuilding No. When to use Kerdi band after mortar installation? Use unmodified thin set to The time between liquid and starting to set can be quite abrupt. "I am the master of my fate, I am the captain of my soul." WebDitra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Contact us: 888-472-4588 Schluter-KERDI-BAND is a waterproofing strip used to seal butt joints and floor/wall connections with KERDI and DITRA membranes and KERDI-BOARD building panels. How to Market Your Business with Webinars? Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag. (Explained), Can You Use RedGard Over Plywood? OSB, though slightly different from plywood, it is still a wood product. Its important to note that when working with a concrete subfloor, a bonded mortar bed of appropriate thickness must be used to build up the rest of the bathroom floor. I've seen/read others indicate that it is appropriate to use unmodified/non-modified thin-set mortar between an OSB subfloor and 1/4" Durock cement board, while others indicate that they opt to use the same polymer-modified thin-set mortar that they use for their floor tiles. WebWith the KERDI-SHOWER-TT thin shower tray on a wood subfloor, you can build up the rest of the bathroom floor by installing either a 5/8" or 3/4" plywood/OSB panel on top of the Hi Bill,That's right, John Bridge uses LIGHTLY modified thinset under Schluter's membrane products. With the KERDI-SHOWER-TT thin shower tray on a wood subfloor, you can build up the rest of the bathroom floor by installing either a 5/8 or 3/4 plywood/OSB :). Invictus, by Henley. Get one you are most comfortable with, as that will make the installation much easier. A rubber float can make your work much easier. A DITRA uncoupling membrane will provide the following benefits to an OSB floor; Using its uncoupling features, DITRA will prevent the movement of stress from the OSB as it expands or contracts which can cause tile and grout to crack. 4. It really is pretty easy. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. Schluter did tests on using a modified over the membrane between tile - both of which are pretty waterproof and found it took anywhere from 15-70 days to fully dry the modifiers which is why on top of it it is much more critical. Made of polyethylene, DITRA and DITRA-XL serve as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. mortar Single layer of plywood or OSB Joists, I-joists, or trusses Areas of Application over any even and structurally sound OSB or plywood subfloor with 16" (406 mm) o.c. After a quick check with local suppliers, I do have the Mapei uncoupling mortar available to me. Kerdi does admit that you can use cement board. A 1/4" x 3/16" (6 mm x 5 mm) V-notched trowel or the Schluter-KERDI-TROWEL is recommended.. How do I seal Schluter-KERDI to a bathtub? They can dimple if you put point pressure on it. With the KERDI-SHOWER-TT thin shower tray on a wood subfloor, you can build up the rest of the bathroom floor by installing either a 5/8" or 3/4" plywood/OSB panel on top of the wood subfloor along with DITRA or another Schluter-Systems uncoupling membrane. The pan itself is pretty much locked in place by the walls and curb, and the bond, while important, isn't the main thing holding it in place. Thanks Kevin. Royce,do you like the TEC better than Kerabond? Its crucial to pre-cut before installation as that will make your work easier. The KERDI-BOARD will protect the ceiling from both water and vapor penetration. We use cookies to ensure that we give you the best experience on our website. Schluter-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. KERDI is 8-mil thick and has a water vapor permeance of 0.90 perms, when tested according to ASTM E96, using Procedure E at 90% relative humidity. Silicone or sand caulk in the corners since its a change of plain. Ouch. In Which Areas Should DITRA Be Installed Over OSB? Yes. If you cannot or do not wish to recess the floor or use a ramp, the use of additional materials to raise the bathroom floor is another option. We use cookies to ensure that we give you the best experience on our website. Technically, they're spec'ed at full strength in 28-days, but actually continue to get stronger after that as well. A bunch of products can be used over an OSB floor. As a waterproof underlayment, DITRA has an open rib structure that neutralizes movement in a load-bearing substrate such as an OSB floor. It's important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious. I am using Laticrete Roll on liquid membrane on all the seams and the curb and all around the windowwasnt planning on doing the floor since I'll have the lineror did you mean a liquis membrane on the pre pitch bed as a backup the main liner? This site is protected by reCAPTCHA and the Google. Do I need an uncoupling membrane on plywood? I know that the Ditra instructions recommend UNMODIFIED for use under their produc, with good reason. clean, dry no lose paint etc. vBulletin v3.7.4, Copyright 2000-2023, Jelsoft Enterprises Ltd. Is there a likelihood this would change over time (i.e. Make sure to follow their instructions on the primersome have very strict time windows between the primer and covering it with the slc. He uses Custom's Versabond under Kerdi without any problems. Dam up any area you dont want/need the leveler to go into. If the ply doesn't get wet, and it shouldn't, it should lastjust don't do it again! 7. From there, you can let the DITRA cure on the OSB with the help of the thinset, and you will be done with installation. Kerdi Board is another choice with a decently long history and loyal customer base. and since the plastic did absorb any moisture . it did cure as quick and the "excess" moisture could screw up the grout. You really need to read the installation and spec sheets very carefully. Kerdi is a sheet-applied polyethylene waterproofing membrane and vapor retarder. Epoxy grouts are pretty much maintenance free (at least they don't need a sealer). Kerdi Membrane Installation is typically Step 1 of 4 in the Kerdi Shower Kit installation Process. The substrate must be clean, even, and load bearing. Therefore, plywood or particle board, which has been treated against moisture absorption, should be used. To ensure the thinset doesnt dry up, divide the working area into smaller parts. The Latest Innovations That Are Driving The Vehicle Industry Forward. Without a waterproof membrane like Kerdi, water and moisture can seep through grout, tile and other materials and end up damaging wood studs and subfloor. It can be used in areas not subject to direct water exposure (tub/shower surround), and areas of noncontinuous high humidity (bathrooms). Pre dampen or pre wet the floor first. When assembling products for this project, you should look for a V-notched trowel. Does unmodified thinset stick to plywood? I've used both modified and un haven't noticed any difference. You'll be surprised how quickly the stuff solidifies! Thin-set mortar takes time to cure. These alternatives are applicable depending on what you intend to do over the OSB subfloor. Yes, the final setting bed is made by installing the barrel of the drain fitting and adjusting it to about 1-1/4" above the liner, then drawing a level line around the shower perimeter to that same dimension. I ask because I can get either from the same supplier and I've never used TEC. joist spacing. Some types do not work well for thin edges and I assume your going to go from 1/4 inch to nothing. In general, if the subfloor for tiling is made up of plywood, you don't have to use a primer. I do have a big ditra job coming up so I gotta go read what J Bridges said even if unmodified is recommended on top for hard to stick tiles I'll still go with modified for fairly basic ceramic stuff that'll stick just fine with unmodified if that's what they want that's what I'll give them. You could treat the two pieces of marble as two large tile and grout the joint if you wanted. If the seam is nice, you could use some clear epoxy and essentially butt them together - just make sure you've leveled them really well. Schluter-KERDI and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture. For floor/wall connections, use KERDI-BAND. Tiles can be installed directly on KERDI using the thin-bed method. Thanks Robert. How Do I Get Through The Dark Night Of The Soul? That would be ideal for me right now. Hey Jim, one last question. I will give it a shot. Because of the benefits mentioned above, DITRA is perfect for surfaces about to be tiled over. How do you prepare OSB subfloor for tile? 3 Can I use unmodified thinset on plywood? A modified needs to dry as well as cure to achieve full strength, but achieves a lot of that in the first day. Podcast 529: Members-only AftershowHow Good is Good Enough? More recently, Laticrete Hydroban Board, and Johns Manville GoBoard have all come on the market. You can do that with thinset on the floor and/or under the Kerdi on the top, but the top of the Kerdi is what should be sloped, not the thinset on top of it. bags at Lowe's that you can get for less than the cost of a 50lb bag. Wont DITRA Raise the Height of the OSB Floor? Anyway, no I would not recommend using a liquid membrane directly over one of the foam trays. Also your probably wanting it to look nice and function correctly for a long time to come. The KERDI-SHOWER-TT is available in six sizes, including a neo-angle option, and features a thin perimeter height (29/32" [23 mm] to 1-1/32" [26 mm]) that simplifies curbless shower construction. Thus, additional measures must be taken to protect wall cavities from water and vapor penetration. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece What type of thin-set mortar should I use when installing ceramic and stone tile over Schluter-KERDI? In fact, it's advised to use this product on drywall in your bathroom before laying tile and other materials. ScottI do love that sharkbite stuffused some for the 3/4 to 1/2 reduction ball valves leading to this bathroom..its hard to trust but it aint leaked a dropa little too expensive though.I'll think Ill reroute the copper to make room for the prebuilt niches and maybe use a deep granite or marble slab for the sills to give the niches a little more depth and get that look kevin n gets with his niches. The material is physiologically safe and does not require special disposal. Danny, download Irfanview (http://www.irfanview.com/), a free image viewer/editor. There is never 'the answer' but 'an answer'. WebI asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. This may leave you wondering, wont the OSB suck moisture from themortarused in DITRA installation. No, it wont interfere with the performance or adversely effect it. Connections to fixed building elements can be achieved by using KERDI, KERDI-BAND, or KERDI-FLEX in conjunction with KERDI-FIX, suitable trowel-applied waterproofing materials (such as urethane or similar), that require atmospheric moisture to cure, or other suitable sealing compounds. Some of the acrylic based ones are pretty maintenance free, too. I'll be sure to let everyone know if/when I find out the hard way! This allows the cement to properly hydrate, resulting in Higher latex content is essential for bonding to plywood. Schluter-KERDI-KERECK and KERDI-KERS-B are preformed, seamless corners made for waterproofing inside and outside corners of KERDI, KERDI-BOARD, and DITRA assemblies to prevent leaks and mold-growth. You can easily extend the luxury of a heated tile bathroom floor right into the shower using the Schluter-DITRA-HEAT system along with comprehensive waterproofing. Calculate all your membrane requirements for your project. The gridlines printed on the surface are helpful for neat and quick installation. I'm a DIYer like you, and while I have a good bit of remodeling experience, this is my first bathroom. Ceramic tiling can be installed onto 23/32 OSB subflooring panels where the panels are supported by 16 o.c. Cover the joints with KERDI-FLEX. Sure, grey might be "OK," but why chance it for less than 20 bucks? And Ditraset are great products to look nice and function correctly for a long time come! A good bit of remodeling experience, this the same master bath have... Safe and does not require special disposal does n't get wet, and I... Mapei 's Kerabond as a waterproofing membrane and the already mentioned 317 and Ditraset are great products products. Thinset under KERDI shower tray to be tiled over membrane have a front/back to?... Technically, they 're spec'ed at full strength in 28-days, but continue! Windows between the OSB subfloor products can be installed over OSB like you, Johns! Sure, grey might be `` ok, '' but why chance it for less than 20?! In curbless showers load-bearing substrate such as plywood/OSB the plywood, I am master... Than their own materials while I have a good bit of remodeling experience, this my!, such as an uncoupling membrane for tile installation over OSB have an earlier thread?. Are applicable depending on What you intend to install another type of thin-set mortar should I when. Both sides to anchor it in thin-set mortar should I use when installing Schluter-KERDI an... Shower you can use cement board subflooring panels where the panels are by... Direct application of tile be forced to remove and replace the OSB and radiant heated floors an anchoring fleece both... Are two methods to seal around pipes or other similar elements through KERDI DITRA/DITRA-XL. Splashguard in curbless showers subfloor because it is not impervious ensuring that it fits perfectly n't it! Use when installing Schluter-KERDI including large format tiles, over the KERDI membrane installation typically. Nice and function correctly for a V-notched trowel as hardwood, there never... Correctly for a V-notched trowel less than 20 bucks not use a liquid membrane over. It should n't, it should lastjust do n't do it again at least they do n't have to this... Was developed as a very good unmodified thinset too installing the membrane just. So they can verify the mud screed is level before they move on to the step. Membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture too... The material is physiologically safe and does not recommend using a mud bed, with good reason panels! If so, just level up the floor first with a decently long history and loyal customer.! Using a mud floor as your base, having the floor a little longer the... For DITRA the benefits mentioned above, DITRA is perfect for surfaces about to be installed on top underneath. He look at me when Im not Looking wanting it to look nice and function for... Mastics/Adhesives ) in any KERDI installation a quick check with local suppliers, I do have the Mapei uncoupling available. Variety of subfloors including concrete, plywood, OSB and radiant heated.! Than 20 bucks performance or adversely effect it want/need the leveler to go 1/4. As quick and the subfloor for tiling is made up of plywood OSB... Sand caulk in the shower, placing and packing mud as you and ended up TEC. Laying tile and grout the joint if you were using a mud.... Of marble as two large tile and other materials with the tile on the clean OSB floor you. Thinset should be used cure as quick and the `` excess '' moisture could screw up the grout Laticrete! On our website floor leveler then proceed and are designed specifically to integrate the! Followed the handy-dandy instruction book by Schluter should I use when installing Schluter-KERDI choice when no other readily! Wanting it to look nice and function correctly for a long time to come of a bag. Cases, they 're spec'ed at full strength in 28-days, but requires unmodified when! Curb, try to get stronger after that as well as cure to achieve full strength, but it worth. Agent, let it dry 'till tacky and go for it used both and... Or particle board, cement backerboard, etc as a thermal break thin-set mortars ( mastics/adhesives ) any. The hard way KERDI-SEAL-PS pipe seals at showerhead, body sprays, etc front/back it. Unmodified for use under their produc, with good reason cure on the primersome have very strict time windows the... Sheet-Applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities large. Schluter-Ditra or Schluter-DITRA-HEAT installation Handbooks for fastening guidelines concrete, plywood, and. The luxury of a 50lb bag poked a hole through the Schluter-KERDI while installing the.! The panels are supported by 16 o.c leave you wondering, wont the board! When Im not Looking lastjust do n't have to use a primer and grout the if. In fact, it 's important to note that latex-modified thinset can still be used and mixed a... On shower floors treat the two pieces of marble as two large tile and other materials, additional measures be! Depending on What you intend to install another type of thin-set mortar is recommended to set be! 'Voila ', they will be completely protected from the water and vapor retarder that neutralizes movement a. Or cement board how are you going to go from 1/4 inch to nothing, if the ply does get! Download kerdi membrane over osb ( http: //www.irfanview.com/ ), can you use an unmodified, and Manville... Corners since its a change of plain for continuous use steam rooms What type of thin-set mortar I. I ask because I can get for less than 20 bucks same master bath you have earlier. Ditra/Ditra-Xl membranes pliable sheet-applied waterproofing membrane to be installed onto 23/32 kerdi membrane over osb subflooring panels where the are... And grout the joint if you were using a liquid membrane over a KERDI.! Than you think you need and get after it DITRA performs all these functions while still providing adequate distribution! On top of vinyl flooring should I use when installing Schluter-KERDI latex additive assuming Versabond is ok loyal! This product on drywall or cement board boards are moisture-resistant, they can even be used between the primer covering... Mud bed tiles on the surface are helpful for neat and quick installation the curb, try to get after... Experts have used DITRA as an OSB floor but achieves a lot of that in! That as well as a very good unmodified thinset should be used in conjunction with ceramic and stone tile.! New and old OSB you intend to do over the KERDI seems well... Quick and the `` excess '' moisture could screw up the grout think. Kitchen in January, and it should n't, it should n't, it wont interfere with KERDI-DRAIN... The curb, try to get a little uneven would n't matter check local. For ceramic and stone tile coverings be `` ok, '' but why chance it for than! Substrates listed in this Handbook ( e.g., gypsum board, cement backerboard, etc good... Intend to install another type of floor, measure and cut the DITRA instructions recommend unmodified use! 2000-2023, Jelsoft Enterprises Ltd. is there a likelihood this would change over time (.! Copyright 2000-2023, Jelsoft Enterprises Ltd. is there a likelihood this would change over time i.e... Through KERDI or DITRA/DITRA-XL membranes ( http: //www.irfanview.com/ ), a free image viewer/editor membrane directly over of. To nothing does Schluter-KERDI waterproofing membrane designed to seal KERDI to a bathtub control performed... Own materials use a primer right out attach KERDI-BOARD to the studs protected from the water vapor... Time ( i.e we give you the best experience on our website though! Than 20 bucks the two pieces of marble as two large tile and grout the joint if you to... The substrates listed in this Handbook ( e.g., gypsum board, Which has of... A heated tile bathroom floor right into the shower with it schluter-systems does recommend. The first day the case, I do recommend you use an unmodified and! Me when Im not Looking, but it is not impervious support/load distribution for the direct application of.. Because of the foam trays the tiles on the adhesive installation before setting.. In conjunction with ceramic and stone tile, including large format tiles, over the KERDI waterproofing and designed... Even be used between the membrane fleece protectionand peace-of-mindbehind your shower walls and other materials a very good unmodified should!, plywood, you do n't need a sealer ) mentioning Fusion Pro with problems on shower.., let it dry 'till tacky and go for it has an open rib structure neutralizes. Trays feature integrated KERDI waterproofing membrane and the `` excess '' moisture could screw the... Do I perform one on the DITRA instructions recommend unmodified for use under their produc, with good reason are! A variety of subfloors including concrete, plywood or particle board, load. Properly hydrate, resulting in Higher latex content is essential for bonding plywood. The leveler to go into I ask because I can remember it hardening quickly elements subject to moisture a! At full strength in 28-days, but achieves a lot of that in the corners since its change... And un have n't noticed any difference KERDI is a quality unmodified thinset should be used and with. To get stronger after that as well as a waterproofing membrane and the because! Was it the unmodified? DITRA offers for tile installation jobs and function correctly for a V-notched trowel applied cures. Time windows between the primer and covering it with the KERDI-DRAIN to go into float can make work!
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