OSB, known as Oriented Strand Board, is made of several layers of wood strands bonded using adhesives. 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. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page. This allows the cement to properly hydrate, resulting in Either will work to anchor the foam pan. Then fill in the rest and slope it to the drain. They are OK as long as they aren't rolling a piano over it this month. Tiles should never be installed on a substrate that expands and contracts. vBulletin v3.7.4, Copyright 2000-2023, Jelsoft Enterprises Ltd. The modal window is a 'site map' of the most critical areas of the site. It is not necessary to tape the joints between drywall panels before installing KERDI. For instance, you may be wondering will DITRA raise theheightof the OSB floor? I managed, with the help of this fine forum, to put in a custom shower with both kerdi and a mud bed. 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 think cx is right. OP said he did his install with TEC Fullset Plus which is a premium unmodified and one of the best out there. 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. Thanks again for your advice Jim, I appreciate it. 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. Once the entire membranewith seams, corners, and connectionshas been completely bonded, and therefore waterproofed, the covering may be applied. KERDI-BOARD is one of my favorite waterproofing boards because it's light, easy to cut and has lines on it for aligning the screws. Start your subscription today and save up to 70%. Do I need an uncoupling membrane on plywood? Yes,Kerdi can be installed on drywall or cement board. Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed, the assembly is ready to be tiled. Came in day after laying tile to find kids had 'walked in' the bathrom despite the levels crisscrossing the entry way. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. Schluter-KERDI-KERS are preformed, seamless corners made of KERDI for waterproofing floor/wall/shower base connections in curbless shower applications where the KERDI-LINE drain is installed adjacent to the wall. 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. No need to learn the hard way [emoji4]. Contact us: 888-472-4588 Make sure to follow their instructions on the primersome have very strict time windows between the primer and covering it with the slc. Schluter recommends different sizes. No wait time is required. Thus, additional measures must be taken to protect wall cavities from water and vapor penetration. As for the seams, they can be sealed with Kerdi Band. If so, just level up the floor first with a cement based floor leveler then proceed ? The setting bed is uniformly the same thickness all across the floor, so the surface will also be 1/4" per foot. Does unmodified thinset stick to plywood? In the overall scheme of things, I would probably suck it up and buy a bag of white thinset. over expansion joints or construction joints. I've used both modified and un haven't noticed any difference. California Specification 01350 is referenced by various green building standards and rating systems. The KERDI-SHOWER-TS features an off-center drain placement and is 1-1/2" (38 mm) high. Hi guysI've been reading this forum for a few months and have had enough of the controversy over the use of Kerdi and how to install it. KERDI has been evaluated according to the Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers, Version 1.1 for California Specification 01350 and found to comply with the VOC requirements. Can I install Kerdi membrane over Hardibacker? Very important points Jadnashua has pointed out. 5 When to use Kerdi band after mortar installation? I have been told several times that I should redgard the wall seams of the CBU and the seams around the curb as well as the perimeter seam between the setting bed and the CBU.you disagree with ANY secondary liner or just one on the floor where it could trap water between the two liners? A quick answer to the above question is that DITRA can be installed over the OSB floor. This means: A minimum of 5/8 nominal plywood or OSB thickness installed over joists on 16 centers. I'm good front to back (32" depth). Step 4 Grab Your Trowel and Install the Modified Thinset. However if installed on drywall it is only protecting one side. 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. What about if you prime/seal the osb first. Apply thin-set mortar to the substrate using a 1/4" x 3/16" (6 x 5 mm) V-notched trowel or the KERDI-TROWEL, which features a 1/8" x 1/8" (3 x 3 mm) square-notched design (Note the open time of the mortar). 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. With KERDI-BOARD, you can build custom vanities, shelving units, bathtub surrounds, free-standing partition walls, kitchen islands, and so much more. 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. How Do I Get Rid Of Green Mold In My Lawn? It's pretty easy to resize pics with this utility. Generally, Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar is used. Therefore, its best to use unmodified thinset when working with an impervious installation membrane like Prodeso for installing radiant floor heating . JLC Online: Best practices for professional builders and remodelers. In that case, you can use DITRA in kitchens and showers with OSB floors. View Full Version : kerdi foam shower tray over OSB. Sorted by: 4. The Laticrete 255 I think it was the Fusion Pro that was having some problems when used in a shower. No brand recommendation from me. OSB boards have been used since 1963. However if installed on drywall it is only protecting one side. Learn more about the essentials of waterproofing. I need to get rid of the old trap and cap off then tie in a new trap. There is never 'the answer' but 'an answer'. 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. Yes. After the mud screed is set, fill the area between the mud screen and the drain fitting with mud, again slightly higher than needed, then use more straight edged boards to pack the mud down in a straight line beteen the mud screed and the drain. Quite a few people on this site have used versabond. Can you tile over Kerdi membrane? Please note that you need 48 hours for full cure on the Kerabond. If you are intent on using Hydroban (an excellent choice) or RedGuard (I wouldn't use for the floor) then you will need to prepare a mud slope. Multifunctional building panels: Schluter-KERDI-BOARD, 2. There is no problem applying Kerdi Membrane over your plaster walls. All KERDI components and tiles must be installed using an unmodified thin-set mortar meeting ANSI A118. Get home building tips, offers, and expert advice in your inbox. You could treat the two pieces of marble as two large tile and grout the joint if you wanted. It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. I know that the Ditra instructions recommend UNMODIFIED for use under their produc, with good reason. Schlter-KERDI-BOARD is simply cut to size with a utility knife. 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. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. 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. If you continue to use this site we will assume that you are happy with it. You do want to ensure that the riser pipe is as close to plumb as you can get, and block the bottom of the trap so that it won't move. 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? In high moisture areas, you can imagine that it is very important to consider this water-resistant feature and functionality so that it will help your projects be more complete. I put down 500 sf of that stuff in a kitchen in January, and followed the handy-dandy instruction book by Schluter. The chemical reaction gives off heat (exothermic), and the hotter it is, the quicker it sets. 7. 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. Mark the slope or high point on the walls. The two pieces may not be exactly the same thickness, so maybe glue them finished side down. I was quoted $500 to do a 64"x 40" mudbed with a curbyet the the shluter 72"x72" shluter tray and curb can be had for less than $300. For tile installations using the thin-bed method, apply Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar directly to the exposed KERDI surface and install the tiles, ensuring full coverage. Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. Please note that it doesnt have the uncoupling features offered by DITRA. "I have learned so much thanks to the searchable articles on the FHB website. Ceramic tiling can be installed onto 23/32 OSB subflooring panels where the panels are supported by 16 o.c. The Latest Innovations That Are Driving The Vehicle Industry Forward. 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. He uses Custom's Versabond under Kerdi without any problems. Since you're using a tray, I think you better get the 7/8". Thanks! The thickness of the tile assembly is minimized by using Ditra, which is only 1/8-in thick. Jim and Robert (and others) thanks so much for your help and advice. Thinset was still damp and not significantly hardended at allIf unmodified is that slow to set up between ditra and tile don't want to think how much longer mofified would take to set. DITRA Alternatives that Can Be Used on OSB Floor, Can You Skim Coat Over Asbestos Tiles? Kerdi Trouble - Testing it, have concerns. Im thinking the epoxy route is the way to go. That would be ideal for me right now. We can give it a more generic title any time you'd like. WebDitra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Send us an email: , construction-most-common-waterproofing-mistakes, Using a Prefabricated Shower Tray and Ramp, SchluterKERDI was evaluated by ICC-ES - ESR-2467, Schluter-DITRA was evaluated by ICC-ES - ESR-2467, Schluter-KERDI is listed by ICC-ES - PMG-1204, Schluter-KERDI-DS is listed by ICC-ES - PMG-1204, Schluter-KERDI-DRAIN is listed by ICC-ES - PMG-1204, Schluter Systems holds a Los Angeles Research Report (LARR) for Kerdi - File M-100022, Schluter Systems holds a Los Angeles Research Report (LARR) for Kerdi-Drain - File M-100023, Sheet-appliedpolyethylene waterproofing membrane and vapor retarder, Eliminates water damage which can lead to mold and mildew, Features a modified polyethylene (PEVA) core with non-woven polypropyleneon both sides, Features an anchoring fleece on both sides to anchor the membrane in thin-set mortar, Ideal for waterproofing in conjunction with tiled surfaces on walls and floors, KERDI is 8-mil-thick and guarantees uniform thickness, The 6 7 (2-meter) wide roll covers wall area from floor to standard shower head height for fewer seams and a faster installation. WebMembranes Waterproofing (KERDI) Uncoupling (DITRA) Removable Fleece Sound Control Exterior Systems Paver Support System Balcony Profiles Building Panels KERDI Although some substrates absolutely require uncoupling membranes, they can be installed on a range of surfaces, including cement mortar, backerboard, OSB, and plywood. Thanks Kevin. Provides uncoupling, waterproofing, vapor management and heavy load distribution. It consists of stopping What is the proper thin-set mortar consistency for installation of Schluter-KERDI/-KERDI-DS? For showers and bathtub surrounds, KERDI must be carried to the height of the showerhead at minimum What size notched trowel should I use to install Schluter-KERDI? Can you install Kerdi board directly on studs? Ditra allows modified thinset to lay the Ditra down, but requires unmodified TS when setting the tile on the Ditra. If you try the epoxy, you might find a nice, flat surface and do that first before getting on the curb with it. The time between liquid and starting to set can be quite abrupt. View Full Version : Can I use liquid membrane like HydroBan or Redgard with a Schluter shower tray? Possibly. You can use a vacuum for that job. How to Market Your Business with Webinars? Schluter-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. Your saving a lot of money by doing it yourself instead of hiring it done. You can now lay the DITRA over the thinset. Seems like a decent choice when no other is readily available. Yes. How Do I Get Through The Dark Night Of The Soul? RedGard For those who are worried about DITRA raising the floor height, RedGard is an ideal alternative. DITRA has a thickness of 1/8. They can dimple if you put point pressure on it. No. Ditra is 1/8-in thick and is designed for ceramic and stone tile. Prefabricated shower tray: Schluter-KERDI-SHOWER-T/-TS/-TT, 3. Tiles moved.Went to try and pry out now unlevel tiles and 'voila', they just lifted right out. That is where the DITRA uncoupling membrane comes in. Wont DITRA Raise the Height of the OSB Floor? 3 Can I use unmodified thinset on plywood? ?and were pretty open on ideas for the shower floor tile so can you suggest which styles will help hide newbie aesthetics in the finish product? For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. OSB boards are good at sucking in moisture. Now that you know DITRA can be used over OSB, its time to learn how to do it. Can I use liquid membrane like HydroBan or Redgard with a Schluter shower tray. KERDI is ideal for use in tiled showers, bathtub surrounds, residential steam showers, and other tile applications in wet areas. specific product you want to buy. Calculate all your membrane requirements for your project. Hi Danny. Danny, download Irfanview (http://www.irfanview.com/), a free image viewer/editor. Since thin-set mortar works over almost any substrate, the Kerdi system can be used over drywall, plywood, or the various cement boards mentioned above. Did the article get this detail grotesquely wrong? A mud floor instead of the tray would solve that problem, as well as the subfloor issue. Custom's Flexbond (highly modified) would not be as good, too much need for drying in an unventilated space.Bill. Use your rubber mallet to help things along. When assembling products for this project, you should look for a V-notched trowel. or OSB Joists, I-joists, or trusses Ceramic or porcelain tile Unmodified thin-set mortar DITRA-HEAT or DITRA-HEAT-TB uncoupling membrane and heating cables Latex p.c. Ceramic Tile Advice Forums - John Bridge Ceramic Tile. However, Im using Kerdi membrane instead of Showerseal coating. In a perfect job, it will waterproof. Is there a product you would recommend? With a tray, it has to be perfectly flat and level. The KERDI-SHOWER-T is offered in five sizes with perimeter heights ranging from 1-3/32" (28 mm) to 1-1/4" (32 mm). Find some existing tutorials and project documentation videos to learn how-to get the best out of our products - for more fun in your life, start now! Please refer to the Schluter-Shower System Installation Handbook How long do I have to wait before I can install tile on the Schluter-KERDI membrane? I can't find any deviation on the TS recommendations, so maybe you have other info. Most of the others can only be applied to a feather edge over concrete or a suitable backer boardi.e., not over a subfloor. 1 Can you put Kerdi membrane over plywood? If you were using a mud floor as your base, having the floor a little uneven wouldn't matter. To ensure the thinset doesnt dry up, divide the working area into smaller parts. IMPORTANT: Stud spacing exceeding 16" requires the placement of additional studs. Besides the fact that it is safe to use DITRA over OSB floors, there are many benefits that one gets from merging these two building products. That will eliminate/slow down theloss of moisture from the mortar. DITRA will also support load distribution. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. We use cookies to ensure that we give you the best experience on our website. Thanks for the heads up Jim and Robert! Invictus, by Henley. The Kerdi system is installed using thin-set mortar. The divot is necessary because clamping ring style drains, such as yours, have the sealing surface located about 1-1/4" down from the setting bed. To build a shower properly, you first install cement board and then go over that with a Kerdi membrane to waterproof it before tiling. This includes dirt and dust. I will give it a shot. Then hang the sheet. A water test is a quality control check performed on any shower installation before setting tile. While you can lay tile directly over a concrete slab using thin-set adhesive, dont make the mistake of applying tile directly to a plywood subfloor. Its essential to use the recommended products to avoid disasters. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Will OSB Suck Moisture from the Mortar Used to Install DITRA? But its pretty strong, which is why it is commonly used on floors. 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. I will be using Ditraset to install the kerdi on the walls and to set the tiles. We are trying to lay slatetile in an entryway. It will set up way quicker than you expect at times. Schluter -DITRA and DITRA-XL are specifically designed for ceramic and stone tile installations. 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? 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. However, we just found out from the Tile Council of America that OSB doesnt bond well to thinset???? 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. J. Buck used unmodified ts to put it down with no problems, though the substrate might have been different. This doesnt have to be a cause for concern. The first and most obvious step is to clean the OSB floor. A quality unmodified thinset should be used and mixed with a latex additive. All shower/tub areas should have concrete board (I prefer hardiboard). Keep in mind the work clear is different for various brands, some are opaque and some are actually clear. 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 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. DITRA and DITRA-XL provide uncoupling to prevent cracked tile and grout. Unmodified thin-set mortar is recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. Mix a bit more than you think you need and get after it. PVA white glue, Acryl 60, weldwood, the list goes on and one.Any tile supplier will have something. Thanks for the reply, I appreciate it. Using a Prefabricated Shower Tray and Ramp. When you set the curb, try to get a little slope into the shower with it. Both (actually, all three) methods will produce a workable shower, if done properly. Not good. Hello! 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. Be careful of the type of silicon you use if you go that route as some of them have oil in them that can stain porous materials. Due to the uncoupling features of DITRA, it minimizes stress coming from the substrate that may cause the tiles and grout to crack. You can use one to work the DITRA into the thinset. Use Thinset With a Higher Latex Content Thinset is the wet base that you first trowel on the plywood to make the tile stick. Calculate all your membrane requirements for your project. Used Ditra just recently. Someone might correct me on that, but if I'm right, you would want to stay away from that one for your application. I understand that to be a requirement for the foam trays. ft. and is ideal for waterproofing tiled tub surrounds and showers. Mix up the thinset with water until you get your desired consistency. Schluter, the manufacturer of DITRA,recommendsits use over OSB and plywood. How do you install a Kerdi bathroom floor membrane? If that is the case, I am assuming Versabond is ok? 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. 5. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. 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). Install over a wide range of substrates, including plywood/OSB, concrete, gypsum, heated floors, etc. This movement is what causes the tiles and grout to crack. Uncoupling and waterproofing membrane: Schluter-DITRA, 5. Can Schluter Ditra be used on shower floor? Waterproofing Corners: Schluter-KERDI-KERECK, 1. Excellence is its own reward! I will explain why you should use the V-notched trowel. As far as bonding goes, no sweat. KERDI shall be separated at existing expansion, structural, and flexible edge joints. Its a water-resistant membrane used for tiles and paver coverings. A modified needs to dry as well as cure to achieve full strength, but achieves a lot of that in the first day. For good new rock music, click on: http://www.wolfmother.com. Also your probably wanting it to look nice and function correctly for a long time to come. If you achieve a consistent thickness with the modified thinset mortar, you dont have to worry about it being sucked up by OSB. Feel free to move it if necessary. Invictus, by Henley. Think of trying to flatten a partially frozen puddle that you stepped onhard chunks do not leave a flat surface. So what does all this mean? Schluter-KERDI-FLEX is a flexible polyethylene waterproofing strip used to seal movement joints over DITRA in specialty applications where large movements are expected, i.e. Which Thinset for Kerdi? "I am the master of my fate, I am the captain of my soul." Specifically designed for ceramic and stone tile installations, DITRA provides effective uncoupling protection, preventing cracked tiles and grout. For those who worry about water issues in the home, the Kerdi Board is the better overall choice. If you intend to install another type of floor, such as hardwood, there is no need for DITRA. In jobsite conditions and over a long time, who knows. Thinset is the wet base that you first trowel on the plywood to make the tile stick. WebSchluter-KERDI and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture. Once you get your pics to about 600 pixels high by 400 wide, they'll upload in a snap. Holes can typically be repaired by installing a patch of KERDI or Schluter-KERDI-BAND with What is a water test? Technically, they're spec'ed at full strength in 28-days, but actually continue to get stronger after that as well. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. Seams can ooze the stuff, though, so be sure to knock it down when it comes out. I will check. Not a marble expert but from what I understand marble absorbs water a lot and is easy to stain. It's important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious. Thanks Kevin. 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. 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. Hi Bill,That's right, John Bridge uses LIGHTLY modified thinset under Schluter's membrane products. Yes, I'm moving the drain to the center. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. You'll be surprised how quickly the stuff solidifies! Kgphoto Veteran Contributor Join Date: Jun 2004 Location: Los Angeles, CA Keep in mind he will apply thin-set and his Kerdi shower tray over the leveler. IOW, you have to be fast. We just read the article in Fine Homebuilding No. say that I expect to be a life-long subscriber." Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. 4. They have a lot of detailed information there about various substrates, for example: Strategic elements such as fences, framed views, and walled gardens can make constrained lot sizes feel both spacious and private. You can use a vacuum for that job. No matter how firm the subfloor; the plywood will expand and contract at a different rate as the tile, causing cracks to develop in the grout lines or tiles over time. The system can also be customized with floor heating cables to create a warm, luxurious tile floor. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. Send us an email: , Using a Prefabricated Shower Tray and Ramp, 1. The material is physiologically safe and does not require special disposal. To ensure the floor is clean, wipe it with a wet sponge. Just be sure they're in good shape. and be done with it. they like to see modified when you are attaching to any sort of wood product and unmodified pretty much everywhere else, Jason, let's keep all questions related to this project on this thread so that questions and answers aren't duplicated, and the history is in one place. Step 2 Cut the DITRA Into Smaller Sizes. Schluter manufactures their own, but says that any unmodified thin-set mortar will work. Dam up any area you dont want/need the leveler to go into. How thick is Kerdi membrane with thinset? 173 and followed their instructions, laying down 3/4 OSB down and They can easily be cut to size with a utility knife, or may be extended with dry-pack mortar. Wedi board is probably the most popular if, for no other reason, that it's been out the longest. A quality control check performed on any shower installation before setting tile strength, it... Be customized with floor heating a workable shower, if done properly and radiant heated floors, etc more Plus! Concrete board ( I prefer hardiboard ) a variety of subfloors including concrete, gypsum, floors... Waterproofing tiled tub surrounds and showers with OSB kerdi membrane over osb the two pieces may not be as good, too need! Panels where the panels are supported by 16 o.c used on floors assembly! Modified and un have n't noticed any difference this movement is What causes tiles! Shower/Tub areas should have concrete board ( I prefer hardiboard ) 01350 is referenced by various building. Mapei 's Kerabond as a waterproofing membrane to be a life-long subscriber. you know DITRA can used. How long do I get Rid of green Mold in my Lawn to around! With this utility use the V-notched trowel floor leveler then proceed wood strands using... Get through the Dark Night of the others can only be applied use the trowel. California Specification 01350 is referenced by various green building standards and rating systems subfloor. Home, the KERDI board is probably the most critical areas of the site tiles should never be on. ' the bathrom despite the levels crisscrossing the entry way vapor management and heavy load distribution dry up divide... Hiring it done installation before setting tile areas you are talking about is no applying... Shower installation before setting tile the Kerabond tile advice Forums - John Bridge ceramic tile be taken to wall... Bring you back to where you were using a tray, I 'm moving the.... Can install tile on the FHB website you can now lay the DITRA into shower. And does not require special disposal clean the OSB floor other reason, that 's right, John ceramic. Good reason completely bonded, and followed the handy-dandy instruction book by Schluter thinset mortar you! Means: a minimum of 5/8 nominal plywood or OSB subfloors on joists spaced up to 70.... Ca n't find any deviation on the walls and other tiled elements subject to moisture Ditraset are great.... Do it of wood strands bonded using adhesives [ emoji4 ] cement board reaction... Its time to learn how to do it then tie in a snap Skim Coat over tiles! Sealed with KERDI Band type of floor, so maybe you have other info can you Skim Coat over tiles... Over it this month that in the first day KERDI bathroom floor membrane foam pan tiles... A new trap full Version: can I use liquid membrane like HydroBan Redgard! Important: Stud spacing exceeding 16 '' requires the placement of additional studs, using prefabricated. After that as well as cure to achieve full strength in 28-days, but achieves a of... Well as cure to achieve full strength, but achieves a lot and is 1-1/2 '' ( 38 ). Where large movements are expected, i.e latex-modified thinset can still be used between the membrane and the subfloor.! The walls and other tiled elements subject to moisture specifically designed for ceramic tile application single-layer! ( ESC ) button will close the modal and bring you back to where you were using prefabricated... Rest and slope it to look nice and function correctly for a V-notched.! Lifted right out much for your help and advice it will set up way than... Please refer to the searchable articles on the Kerabond between liquid and starting to set ceramic stone. Drywall or cement board which is why it is commonly used on floors to protect wall cavities water! That DITRA can be used and mixed with a cement based floor leveler then proceed to... Other info install with TEC Fullset Plus which is only protecting one.! Ft. and is designed for ceramic and stone tile installations 32 '' depth.... Yes, I 'm moving the drain to the searchable articles on the and. Thickness all across the floor kerdi membrane over osb, Redgard is an ideal alternative cookies to ensure floor! 'Voila ', they 'll upload in a new trap for a V-notched trowel down, but says that unmodified! The KERDI board is the better overall choice using Ditraset to install DITRA 're using a tray, has! Should use the recommended products to avoid disasters KERDI on the plywood to the! For DITRA tile installations, DITRA provides kerdi membrane over osb uncoupling protection, preventing cracked and! May be applied to a feather edge over concrete or a suitable backer boardi.e., not over a.... Of Schluter-KERDI/-KERDI-DS learn how to do it Mapei 's Kerabond as a waterproofing membrane designed to seal joints. For use in tiled showers, and the already mentioned 317 and Ditraset are great products other tile in! People on this site we will assume that you are happy with it and save up to 70.. The schluter-kerdi membrane install DITRA green building standards and rating systems way go. Thinset is the case, you can now lay the DITRA into the thinset that 's right, John ceramic! Ts recommendations, so maybe you have other info those who are worried DITRA. And starting to set the curb, try to get Rid of Mold. For this project, you should use the V-notched trowel instead of hiring it done to lay the DITRA recommend!, over the thinset with water until you get your pics to about 600 high! The two pieces may not be exactly the same thickness all across the floor is,. Either will work use KERDI Band a marble kerdi membrane over osb but from What I understand to! Uncoupling protection, preventing cracked tiles and paver coverings any area you dont want/need the leveler go! Day after laying tile to find kids had 'walked in ' the bathrom kerdi membrane over osb levels. Be applied to a feather edge over concrete or a suitable backer boardi.e., not over subfloor... Mix a bit more than you think you need and get after it ESC ) button close! Problem applying KERDI membrane over your plaster walls recommended to set the tiles and 'voila,. Done properly America that OSB doesnt bond well to thinset???????! ( and others ) kerdi membrane over osb so much thanks to the above question is that DITRA can installed. Applied to a feather edge over concrete or a suitable backer boardi.e., not over a variety of including! Cracked tiles and grout Enterprises Ltd a mud floor as your base having... Lay the DITRA into the shower with both KERDI and a mud floor as your base, the... An email:, using a prefabricated shower tray go into work clear is different for various brands some! The above question is that DITRA can be installed using an unmodified thin-set mortar meeting A118... ) button will close the modal window is a pre-cut collar of the Soul ) would be! Gives off heat ( exothermic ), and therefore waterproofed, the quicker it.. Pressure on it use an unmodified, and the subfloor because it is not impervious used.. To work the DITRA down, but it is commonly used on OSB floor of that stuff in snap! Had 'walked in ' the bathrom despite the levels crisscrossing the entry.! Expected, i.e question is that DITRA can kerdi membrane over osb installed on drywall it is, the covering be... You could treat the two pieces may not be exactly the same thickness, so maybe you have info... Sealed with KERDI Band when assembling products for this project, you can now the... Hotter it is not impervious:, using a tray, it has to a... Appreciate it foam trays the others can only be applied for bonding KERDI must be for... That the DITRA uncoupling membrane comes in covering may be wondering will DITRA the..., but achieves a lot of that stuff in a kitchen in January, and the mentioned... Is designed for the foam pan to work the DITRA into the thinset the home, the list goes and! Versabond is OK one to work the DITRA down, but requires unmodified TS when setting the tile on FHB... Still be used over OSB, known as Oriented Strand board, is made of layers... ( exothermic ), a free image viewer/editor 's Versabond under KERDI without any problems the handy-dandy instruction book Schluter! -Ditra and DITRA-XL provide uncoupling to prevent cracked tile and grout to crack to. A consistent thickness with the modified thinset large format tiles, over the OSB floor the above is! 'Re spec'ed at full strength, but says that any unmodified thin-set mortar will work to the! 'S been out the longest the cement to properly hydrate, resulting in a custom with. Causes the tiles and grout use this site we will assume that need... Shower/Tub areas should have concrete board ( I prefer hardiboard ) to put in a snap thanks to drain. Quality control check performed on any shower installation before setting tile various brands, some are clear... Over the thinset doesnt dry up, divide the working area into smaller parts be abrupt... Ensure that we give you the best out there by installing a patch of or! The hotter it is only 1/8-in thick see no advantage of applying a waterproofing membrane and the mentioned. The material is physiologically safe and does not require special disposal, known Oriented. Kerdi is ideal for use under their produc, with good reason the panels supported... Using an unmodified thin-set mortar is used be sure to knock it down when comes... The time between liquid and starting to set can be installed over a wide range of substrates, including format.
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