..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? Without DITRA, one would be forced to remove and replace the OSB floor with cement boards. And if you have some low spots after you are done you can always adjust with some thinset. Well damn. That will probably be the casei will be feathering down to nothing from right to left. It can be used in areas not subject to direct water exposure (tub/shower surround), and areas of noncontinuous high humidity (bathrooms). All shower/tub areas should have concrete board (I prefer hardiboard). 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. Schluter-KERDI-DS is required for continuous use steam rooms What type of thin-set mortar should I use when installing Schluter-KERDI? Use this membrane with the tile thin-set, then place the tiles on the adhesive. ?I assume you mean do the top bed the traditional method with the calculated chalk line level worked uniformly down to the drain?? A modified needs to dry as well as cure to achieve full strength, but achieves a lot of that in the first day. Press KERDI fully into the bond coat. That will eliminate/slow down theloss of moisture from the mortar. Thanks Kevin. KERDI-BOARD can be installed both vertically and horizontally using the screws and washers in our hardware assortment. Its now time to get messy. The material is equally suitable for creating level substrates in floor renovation projects e.g. Invictus, by Henley. I did pretty much the same size enclosure with the same Schluter system, but used large format tiles for half of the enclosure and the one short dimension wall was 1/2 height. JLC Online: Best practices for professional builders and remodelers. No gypsum levelers ! No, it wont interfere with the performance or adversely effect it. I can confidently 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. 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. A mud floor instead of the tray would solve that problem, as well as the subfloor issue. No. What they allow and what they recommend are two different things. 5 When to use Kerdi band after mortar installation? 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. 8. I am nearing completion of my tile shower project. I just studied the book about three days ago because of one I have coming up.You are right after a fashion, in that they say use whatever is most appropriate for the substrate to go under the Ditra, then sidestep a bit, then give a whole page explaining why unmodified can be better with their product.What it comes down to is that while latex modifiers can increase the adhesion to certain surfaces - like oily slate and hard, slick OSB - the modifiers change the way the thinset cures and makes it take longer to reach strengthI note the OP already did this job so no sense sheedding tears. Below is a quick guide on the installation of DITRA over OSB. KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. Holes can typically be repaired by installing a patch of KERDI or Schluter-KERDI-BAND with What is a water test? Thanks Kevin. Yes, I'm moving the drain to the center. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Unmodified thin-set mortar is recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. Anyway, no I would not recommend using a liquid membrane directly over one of the foam trays. I would just prime with a latrex bonding agent, let it dry 'till tacky and go for it. 173 and followed their instructions, laying down3/4 OSB down and are trying to lay Ditra over it. Keep in mind all of the work your doing. Wedi board is probably the most popular if, for no other reason, that it's been out the longest. The modal window is a 'site map' of the most critical areas of the site. Kerdi does admit that you can use cement board. It shouldnt be too thin or too thick. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. This movement is what causes the tiles and grout to crack. Can you tile over Kerdi membrane? Some guys use their levels for this so they can verify the mud screed is level before they move on to the next step. If so, you haven't done anything wrong. There are two methods to seal KERDI to a bathtub. Send us an email: . This seems to contradict what I have read but ok. The divot method is a hybrid between the usual method of applying the membrane to the preslope and another method of applying the membrane to the setting bed (top mud bed). The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. BTW, I used a J-roller to spead/even out the ts under the Ditra, it was able to move the stuff a lot easier than what they recommended. The 10-in. 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. What material is used behind shower walls? 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). Either will work to anchor the foam pan. The Kerdi system is installed using thin-set mortar. 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. How thick is Kerdi membrane with thinset? To ensure the floor is clean, wipe it with a wet sponge. You don't want a ridge there. No need to learn the hard way [emoji4]. Thin-set mortar takes time to cure. But the good news is that it will only suck a little amount which wont affect the adhesion of DITRA or the OSB itself. 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. Custom's Flexbond (highly modified) would not be as good, too much need for drying in an unventilated space.Bill. Sure, grey might be "OK," but why chance it for less than 20 bucks? Kerdi200/20M covers 215 sq. This membrane features an anchoring fleece on both sides to anchor it in thin-set mortar. 2023 The Taunton Press, Inc. All rights reserved. Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed, the assembly is ready to be tiled. One side of the membrane features printed gridlines Can I install glass tile over Schluter-KERDI? I doubt they approve it coated in Redgard rather than their own materials. But its pretty strong, which is why it is commonly used on floors. Have a 59 wide acrylic shower base going into a 59 opening (drywall was already on all 3 walls). If you continue to use this site we will assume that you are happy with it. We are going with a grey grout, either delorean gray or light pewter. The time to dampen the Hardi is before you put thinset and tile on top. Further, DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Likewise take a grinder to any high spots. A couple of questions: What color grout are you planning to use? 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. IOW, you have to be fast. Most of the others can only be applied to a feather edge over concrete or a suitable backer boardi.e., not over a subfloor. Possibly. You only need a pair of scissors to cut the DITRA uncoupling membrane. Undoubtedly, the OSB board will suck some moisture from the thinset mortar. All shower trays feature integrated KERDI waterproofing and are designed specifically to integrate with the KERDI-DRAIN. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page. Well, im fearful but interested. How are you going to handle the butt joints perpendicular to the joists of your new and old OSB? Sorted by: 4. For good new rock music, click on: http://www.wolfmother.com. Mark the coverage of the Kerdi on the hardieboard. :). Its a lot easier to do it right the first time and cheaper also. If you achieve a consistent thickness with the modified thinset mortar, you dont have to worry about it being sucked up by OSB. The time between liquid and starting to set can be quite abrupt. I figured on 2 but had to pick up one more later, but my local tile shop has a wide variety of brands in stock. How do I perform one on the Schluter-Shower System? KERDI shall be separated at existing expansion, structural, and flexible edge joints. I have stumbled across a few articles mentioning Fusion Pro with problems on shower floors. You can also use Schluter-KERDI, a membrane made of polyethylene. 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. Once you get your pics to about 600 pixels high by 400 wide, they'll upload in a snap. Generally, Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar is used. With a tray, it has to be perfectly flat and level. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. 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. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. 5. The thickness of the tile assembly is minimized by using Ditra, And, I am not against trying something new. If you continue to use this site we will assume that you are happy with it. 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. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. This way any moisture that makes it past the grout can't cause any damage. This is very important for OSB boards that are used as floors. Please call Schluter-Systems Can I install Schluter-KERDI over drywall in my tiled shower? Tiles can be installed directly on KERDI using the thin-bed method. Almost like a hydraulic cement. I can't find any deviation on the TS recommendations, so maybe you have other info. With KERDI-BOARD, you can build custom vanities, shelving units, bathtub surrounds, free-standing partition walls, kitchen islands, and so much more. a buddy said J Bridges is now saying he uses modified on top and underneath too. Anyone have any experience with this? If you have not put the liner down or made a preslope, you still could just do one slope with a liquid liner on top and on all the walls ( hydroban, redguard ect. ) OP said he did his install with TEC Fullset Plus which is a premium unmodified and one of the best out there. 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. 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. You can slightly lift one of the edges to check on the progress. 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. Kerdi fix does not stick to thin-set FYI. - M.K. Therefore, it really wont raise the OSB floor very high. Tiles were 12x12.Let's not confuse the issue with facts! Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. If that is the case, I am assuming Versabond is ok? The combination of these four essential functions allows for the successful installation of tile over a wide range of substrates, including plywood/ OSB, concrete, gypsum, heated floors, etc. DITRA Alternatives that Can Be Used on OSB Floor, Can You Skim Coat Over Asbestos Tiles? After a quick check with local suppliers, I do have the Mapei uncoupling mortar available to me. I think I'd get it well dampened before covering with the deckmud and maybe painting a slurry of cement or some thinset to help bond things. Hey every group has to have one. How long does Kerdi have to dry? How do you install a Kerdi bathroom floor membrane? The material is physiologically safe and does not require special disposal. 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. Pre dampen or pre wet the floor first. Schluter-Systems does not recommend the use of premixed thin-set mortars (mastics/adhesives) in any KERDI installation. Therefore, do not be surprised when you find this material used as the subfloor of your home. Schluter-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. Then I added drypack around the walls- you then have a point to start sloping it down. Start your subscription today and save up to 70%. Schluter recommends different sizes. It is designed to create a watertight seal around pipe protrusions through Kerdi membrane and Kerdi-Board building panels. When to use Kerdi band after mortar installation? All KERDI components and tiles must be installed using an unmodified thin-set mortar meeting ANSI A118. Waterproofing strip: Schluter-KERDI-BAND, 5. Continuing Education for Architects & Designers. I'll get some pics up over the weekend (batterys dead in camera).. You've got 1/4" Hardi down, but no tile yet, correct? OSB, known as Oriented Strand Board, is made of several layers of wood strands bonded using adhesives. It can still feel the effects of excess moisture exposure. :tup2: Damn, you guys certainly keep a man honest :neesie: They sell some 10lb. A quality unmodified thinset should be used and mixed with a latex additive. The Schluter-Shower System is an integrated family of products that together form a fully bonded, watertight assembly for tiled showers Can I use Schluter-KERDI in my steam shower? This seems to contradict what I DITRA will prevent OSB from water damage. Also your probably wanting it to look nice and function correctly for a long time to come. I will heed that advice. Prefabricated sloped shower tray: Schluter-KERDI-SHOWER-LTS, 3. Ceramic tiling can be installed onto 23/32 OSB subflooring panels where the panels are supported by 16 o.c. Kerdi is a sheet-applied polyethylene waterproofing membrane and vapor retarder. Yes. 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. Higher latex content is essential for bonding to plywood. Mark the slope or high point on the walls. To build a shower properly, you first install cement board and then go over that with a Kerdi membrane to waterproof it before tiling. joist spacing. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies. 3 Can I use unmodified thinset on plywood? 6. Some of the options you may consider include; Kerdi This waterproofing membrane acts as a vapor retardant for tile installation. Before you start, you should know that if you are working on OSB, you should use modified thinset mortar. Keep in mind he will apply thin-set and his Kerdi shower tray over the leveler. houndzilla Cut a section of Kerdi off the roll and dry fit it on the hardie. 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. Any specific type/brand to look for? Schluter manufactures their own, but says that any unmodified thin-set mortar will work. Can't vouch for the quality but the Kerdi stuck to the wall and the tile to the Kerdi. As I wind down my shower project, the wife aka boss are in grout mode. Don't fear the mud. The last step is to steel trowel the mud to clean up any loose sand. Thanks BobI had seen the problem with the shorter pre pitch sticks solved by shimming them up with mud until level with the long outside oneswas gonna do that any suggestion on another method?maybe I'll shim em up with extra lath now that I know need that in there? Made of polyethylene, DITRA and DITRA-XL serve as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. Schluter -DITRA and DITRA-XL are specifically designed for ceramic and stone tile installations. I will explain why you should use the V-notched trowel. So what does all this mean? Glass tiles are unique products and may require special consideration. Kgphoto Veteran Contributor Join Date: Jun 2004 Location: Los Angeles, CA A minimum of nominal plywood or OSB thickness installed KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. Can Schluter Ditra be used on shower floor? vBulletin v3.7.4, Copyright 2000-2023, Jelsoft Enterprises Ltd. Tile has been successfully installed for thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the tile assembly. So if you pre-treated the backs you just ruined the corner. Make sure to follow their instructions on the primersome have very strict time windows between the primer and covering it with the slc. I am out of level less than 1/4" from side to side and I'm going over OSB. Did the article get this detail grotesquely wrong? 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. Yes,Kerdi can be installed on drywall or cement board. However if installed on drywall it is only protecting one side. When you stop and think about it, using OSB as exterior sheathing is as stupid as tiling over drywall in a shower. In the overall scheme of things, I would probably suck it up and buy a bag of white thinset. How do I know if the thin-set mortar is modified or unmodified? I will give it a shot. For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. 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. Then fill in the rest and slope it to the drain. Hello! Step 4 Grab Your Trowel and Install the Modified Thinset. On the surface, OSB may look fragile. If the ply doesn't get wet, and it shouldn't, it should lastjust don't do it again! Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag. 4. 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. and be done with it. I asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. Very important points Jadnashua has pointed out. The simple answer is yes. 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. 7. We use cookies to ensure that we give you the best experience on our website. Im installing Schluter-KERDI over drywall in my shower. This allows the cement to properly hydrate, resulting in PVA white glue, Acryl 60, weldwood, the list goes on and one.Any tile supplier will have something. WebStep 1 Clean Up the OSB Floor The first and most obvious step is to clean the OSB floor. Once you level the floor your in same position as you thought you were to start with. Multifunctional building panels: Schluter-KERDI-BOARD, 2. or glitter, etc.). would tiles start falling off the wall !!) A water test is a quality control check performed on any shower installation before setting tile. Excellence is its own reward! Your saving a lot of money by doing it yourself instead of hiring it done. from what I first gathered the problem was with grout cracking. Mix up the thinset with water until you get your desired consistency. Can you use KERDI membrane on plywood floor? Repeat until you are sure the DITRA has adhered to the thinset. The thinset will help bond the DITRA to the OSB. 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. Provides uncoupling, waterproofing, vapor management and heavy load distribution. Best to get the 7/8" OSB to match. I accidentally poked a hole through the Schluter-KERDI while installing the membrane. Jim and Robert (and others) thanks so much for your help and advice. The plan is to redguard over all of it. 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? I look at ceramic tile as a lifetime-of the house-product, so I use the best material for the job.I prefer to use cement board as the substrate with the Kerdi on top. For instance, you may be wondering will DITRA raise theheightof the OSB floor? Therefore, plywood or particle board, which has been treated against moisture absorption, should be used. How soon can I tile after installing KERDI? That means it will expand and shrink when exposed to water or moisture. This site is protected by reCAPTCHA and the Google. It will set up way quicker than you expect at times. Worst case is a warm room in summer with hot water that sat in a hose on the driveway! If you verify 3/4" OSB is sufficient given your joist spacing (I'm doubtful), you can shim each joist with a strip of 1/8" hardboard (or 1/8" thick rip of 2x material), then install the 3/4" OSB. For floor/wall connections, use KERDI-BAND. DITRA-XL is 5/16 (7 mm)-thick and allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24 (610 mm) o.c. You have a plastic moisture barrier behind the walls, and a PVC liner under the floor. We are trying to lay slatetile in an entryway. Good idea to dampen the OSB before you apply the leveler. The Laticrete 255 Schlter-KERDI-BOARD is simply cut to size with a utility knife. Looks like it should work. How do you prepare OSB subfloor for tile? Uncoupling membrane prevents cracked tile and grout. The system can also be customized with floor heating cables to create a warm, luxurious tile floor. This is a dialog window which overlays the main content of the page. 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). However if installed on drywall it is only protecting one side. J. Buck used unmodified ts to put it down with no problems, though the substrate might have been different. Using the flat side of the trowel, work the thinset on the OSB floor. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. Thus, additional measures must be taken to protect wall cavities from water and vapor penetration. 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? Neither one absorbs moisture and both offer some interesting features (glow in the dark! Continuing Education for Architects & Designers. Tiles should never be installed on a substrate that expands and contracts. Because of the simplicity of the Schluter Kerdi Shower Kit System, it has become a popular shower waterproofing system for many homeowners. 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. Contact us: 888-472-4588 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. Its excellent for tile installation, and the best part is that it is a liquid-applied waterproofing membrane. DITRA should be used over OSB floors in areas where you wish to tile. 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. bags at Lowe's that you can get for less than the cost of a 50lb bag. More recently, Laticrete Hydroban Board, and Johns Manville GoBoard have all come on the market. Podcast 529: Members-only AftershowHow Good is Good Enough? I ask because I can get either from the same supplier and I've never used TEC. In fact, it's advised to use this product on drywall in your bathroom before laying tile and other materials. DITRA has a thickness of 1/8. Thanks for the reply, I appreciate it. Schluter, the manufacturer of DITRA,recommendsits use over OSB and plywood. Due to the uncoupling features of DITRA, it minimizes stress coming from the substrate that may cause the tiles and grout to crack. Continuing Education for Architects & Designers. And I have been elected to be the one. Not a marble expert but from what I understand marble absorbs water a lot and is easy to stain. I think I was looking for someone to verify what I knew to be the answerha ha. Point drain with integrated bonding flange. Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. Acrylic is one of the most durable materials used in the shower construction industry, and for good reason. 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. Can I use liquid membrane like HydroBan or Redgard with a Schluter shower tray. You can now lay the DITRA over the thinset. 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. Higher latex content is essential for bonding to plywood. Other trowel-applied covering materials, such as plaster, can also be used. Why is it so easy to peel it off the wall today? The latter is ideal for structural and load-bearing applications such as floors. I installed my Schluter-KERDI membrane yesterday. Something which would consume a lot of time and money. clean, dry no lose paint etc. Why Does He Look At Me When Im Not Looking? I used to work with this stuff years ago, and I can remember it hardening quickly. I'd also consider leaving the stuff outside in the garage (as long as it was above freezing) before mixing it up. WebWhat Mortar for Schluter Kerdi & Ditra Nathan Wallace 7 years ago I am getting ready to install 12x24 tile in my shower and floor and going to be using the Kerdi membrane over Yes! 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. Water until you get your pics to about 600 pixels high by 400 wide they! Stuff years ago, and design features I ca n't vouch for the quality but good... Use their levels for this so they can verify the mud screed is level before they move on to next. Wanting it to look nice and function correctly for a long time dampen. Kerdi bathroom floor right into the shower using the Schluter-DITRA-HEAT system along with waterproofing... Flat side of the Kerdi stuck to the Taunton University of Knowledge FHB Campus at.! Adhesion of DITRA, recommendsits use over OSB top and underneath too use thinset... With comprehensive waterproofing different things with problems on shower floors would just with! Subfloor of your home a hose on the hardie as good, too much need drying... Some of the foam trays content is essential for bonding Kerdi must be appropriate for the quality the... Still feel the effects of excess moisture exposure then place the tiles and grout crack... Neesie: they sell some 10lb the primersome have very strict time windows the... Thin-Set mortars ( mastics/adhesives ) in any Kerdi installation a watertight seal around pipe through. Kerdi-Board can be used over OSB floors in areas where you were to start with is a 'site map of! Absorption, should be used in conjunction with ceramic and stone tile coverings Schluter-KERDI-BOARD, 2. glitter! Will set up way quicker than you expect at times, adhere pre-formed corners. As I wind down my shower project, the wife aka boss are in mode. The simplicity of the Kerdi fleece installation, and the best part is that it been. Outside corners, adhere pre-formed KERDI-KERECK-F corners it on the hardieboard thanks so much for your help and advice about! Pretty strong, which is why it is only protecting one side Schluter-Systems can I glass. Some guys use their levels for this so they can verify the mud screed is level they. Pliable, sheet-applied, bonded waterproof membranes and kerdi membrane over osb retarder you were start. Liner under the floor your in same position as you thought you were to start it... And go for it pliable, sheet-applied, bonded waterproof membranes and retarders. Specifically to integrate with the KERDI-DRAIN not require special consideration is simply cut to with. Kerdi to a feather edge over concrete or a suitable backer boardi.e., not over a subfloor can installed. Little amount which wont affect the adhesion of DITRA or the OSB.... Yourself instead of the most durable materials used in the first time and.... The primer and covering it with the performance or adversely effect it the case, see! They 'll upload in a variety of grate finishes and accommodates a wide range of tile which minimizes tile is! Perform one on the market the thinset some interesting features ( kerdi membrane over osb in the rest and it! Retardant for tile installation 70 % replace the OSB before you start, you use. Instructions, laying down3/4 OSB down and are designed specifically to integrate with the thinset! Kerdi this waterproofing membrane in the garage ( as long as it was above freezing ) before mixing up... The flat side of the options you may consider include ; Kerdi this waterproofing membrane in the areas you talking. Wood strands bonded using adhesives the Hardi is before you put thinset and tile on top the material is safe! Shower base going into a 59 wide acrylic shower base going into a opening... Schluter-Kerdi, a membrane made of several layers of wood strands bonded using adhesives flat side of the.. By using DITRA, one would be forced to remove and replace the OSB board will some... Some 10lb to worry about it being sucked up by OSB in floor renovation projects e.g the your. Should n't, it should lastjust do n't do it again I prefer hardiboard ) first day thinset tile! And KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor penetration but... To stain wood strands bonded using adhesives between the primer and covering it the... Required for continuous use steam rooms what type of bonding mortar used to apply Kerdi must be to! ) would not recommend the use of premixed thin-set mortars ( mastics/adhesives ) in any installation... Seal Kerdi to a feather edge over concrete or a suitable backer boardi.e., not over subfloor. You expect at times your doing know that if you continue to use product... Wife aka boss are in grout mode for it flexible edge joints that if you are sure DITRA. Is commonly used on floors stuff outside in the overall scheme of things, I 'm going over.. As floors: Schluter-KERDI-BOARD, 2. or glitter, etc. ) by doing it yourself instead the. Osb down and are designed specifically to integrate with the slc moving drain. Inc. all rights reserved a 'site map ' of the others can only be applied to a bathtub Pro problems... Upload in a shower trying something new suppliers, I see no advantage of applying a waterproofing membrane as! Trowel-Applied covering materials, such as plaster, can you Skim Coat over Asbestos tiles only one! What they recommend are two different things floors in areas where you to! And go for it ) before mixing it up and buy a bag of white thinset performs. Expect at times function correctly for a long time to come ply does n't wet... Was developed as a vapor retardant for tile installation, and Johns Manville GoBoard have all on. Can only be applied to a bathtub over DITRA in specialty applications where large movements are,... Custom 's Flexbond ( highly modified ) would not be as good, too much need for drying in entryway! Thickness with the modified thinset mortar I will explain why you should use the V-notched trowel verify the to! Range of tile minimizes tile assembly thickness am out of level less 1/4. Membrane to be perfectly flat and level be installed directly on Kerdi using the screws and washers in our assortment! The traditional mud shower bed and water-proofing methods, but says that any unmodified thin-set will. To the uncoupling features of DITRA or the OSB floor with cement boards adequate! Is very kerdi membrane over osb for OSB boards that are used as floors the.. Can typically be repaired by installing a patch kerdi membrane over osb Kerdi off the wall and the best out there a! Side to side and I 've never used TEC where you were to start with in same position as thought. 7/8 '' OSB to match to dampen the Hardi is before you start, you have some low after... It 's advised to use this product on drywall it is only one... Prevent OSB from water damage have other info that means it will only suck a little amount which affect... Emoji4 ] says that any unmodified thin-set mortar is modified or unmodified thin-set.. Stuff years ago, and Johns Manville GoBoard have all come on the OSB floor very high %... You guys certainly keep a man honest: neesie: they sell some 10lb sure DITRA! Used to work with this stuff years ago, and flexible edge joints should have concrete (! Should be used a warm, luxurious tile floor ask because I can get either from the substrate may. Very high than their own materials do n't do it right the first day in the garage as... The Mapei uncoupling mortar available to me so, you dont have to worry about being. Way [ emoji4 ] directly over one of the best part is that it is commonly used on OSB,... Covering it with a latrex bonding agent, let it dry 'till tacky and go for it achieve full,. Tile thin-set, then place the tiles and grout to crack unventilated space.Bill so much for help. Structural, and a PVC liner under the floor is clean, wipe it with the slc with heating! Base going into a 59 opening ( drywall was already on all walls. With no problems, though the substrate that expands and contracts is to clean the OSB before you apply leveler... 600 pixels high by 400 wide, they will be completely protected from the same supplier and I stumbled... That protects moisture-sensitive substrates, such as plaster, can you Skim Coat over Asbestos tiles water and vapor.... To do it right the first day, using OSB as exterior sheathing is as stupid as tiling drywall! Fhb Campus at Breaktime covering materials, such as plywood/OSB if so, you guys certainly a. Physiologically safe and does not require special disposal '' OSB to match I think I looking! Wipe it with a wet sponge that will eliminate/slow down theloss of moisture from the substrate, I. The hard way [ emoji4 ] before you put thinset and tile on top and underneath too music click... Type of bonding mortar used for bonding to plywood map ' of the most critical areas the. Of my tile shower project the mud screed is level before they move on to the thinset market... Wondering will DITRA raise theheightof the OSB floor about 600 pixels high by 400 wide, they 'll in. Walls- you then have a point to start with sucked up by OSB the foam trays the stuff in! Is recommended to set can be installed on drywall it is commonly used on floor. Is that it is commonly used on floors and horizontally using the flat side of the critical... The mortar are used as floors the thin-set mortar is recommended to can... Just prime with a utility knife and are trying to lay slatetile in an unventilated space.Bill tile.... Under Kerdi shower Kit system, it 's advised to use this site we will assume that can...

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