But its pretty strong, which is why it is commonly used on floors. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed, the assembly is ready to be tiled. Before you start, you should know that if you are working on OSB, you should use modified thinset mortar. Danny, this the same master bath you have an earlier thread about? Mark the coverage of the Kerdi on the hardieboard. If working with a wood subfloor, you can build up the rest of the subfloor 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. WebI asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. It only needs about 1/8" to achieve the 1/4"/foot value. I can confidently This allows the cement to properly hydrate, resulting in As far as bonding goes, no sweat. Please note that the JLC forums are now displayed read-only. 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. I'll be sure to let everyone know if/when I find out the hard way! Continuing Education for Architects & Designers. Specifically designed for ceramic and stone tile installations, DITRA provides effective uncoupling protection, preventing cracked tiles and grout. This movement is what causes the tiles and grout to crack. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. Any specific type/brand to look for? ;). 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. Then I added drypack around the walls- you then have a point to start sloping it down. However, we just found out from the Tile Council of America that OSB doesnt bond well to thinset???? He uses Custom's Versabond under Kerdi without any problems. Plus, get an extra 20% off with code GIFT20, Fine Homebuilding Issue #313 Online Highlights, The Fine Homebuilding Interview: James Metoyer, 10 Steps to Install Crown Molding on Cabinets, Choosing the Right Construction Tape for the Job, Expert insights on techniques and principles. 6. Please note that it doesnt have the uncoupling features offered by DITRA. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. Therefore, plywood or particle board, which has been treated against moisture absorption, should be used. As an alternative to KERDISEAL- PS/-MV, KERDI-FIX or other suitable sealant can be used to seal pipe protrusions and protect moisturesensitive solid backing panels at the mixing valve. Some suggest marble is not recommended for showers. Since KERDI is impervious, it does not deprive the mortar of its moisture. Since KERDI is impervious, it does not deprive the mortar of its moisture. I'm a DIYer like you, and while I have a good bit of remodeling experience, this is my first bathroom. A bunch of products can be used over an OSB floor. :). For acid-resistant coverings, use an epoxy adhesive to set and grout the tile. A minimum of nominal plywood or OSB thickness installed I managed, with the help of this fine forum, to put in a custom shower with both kerdi and a mud bed. a buddy said J Bridges is now saying he uses modified on top and underneath too. Some guys use their levels for this so they can verify the mud screed is level before they move on to the next step. Furthermore, the maximum on-center spacing for the screws and washers is 12 inches. residential bathroom installations designed for foot traffic. Not sure what controversy there is to installing Kerdi. Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. It's important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious. Can I install Kerdi membrane over Hardibacker? 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. Continuing Education for Architects & Designers. California Specification 01350 is referenced by various green building standards and rating systems. When you stop and think about it, using OSB as exterior sheathing is as stupid as tiling over drywall in a shower. 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). Schluter- KERDI-DS is a bonded waterproofing membrane and vapor retarder with very low water vapor permeance for use in continuous-use steam rooms and similar applications. I doubt they approve it coated in Redgard rather than their own materials. Kerdi is all about drywall. Using KERDI-BOARD to build walls over stud framing in wet areas is an efficient alternative to using gypsum board. Prefabricated sloped shower tray: Schluter-KERDI-SHOWER-LTS, 3. I have found that the hub on the drain has less taper than 'normal' ones, and will allow you to seat the pipe into the hub, but it is supposed to be a taper, and only able to be inserted all of the way until the cement melts the plastic. Portland cement-based unmodified thin-set mortars are dependent on the presence of moisture for hydration in order to gain strength. How Do I Get Through The Dark Night Of The Soul? Ceramic tiling can be installed onto 23/32 OSB subflooring panels where the panels are supported by 16 o.c. A quick answer to the above question is that DITRA can be installed over the OSB floor. Sorry about that. Anyway, no I would not recommend using a liquid membrane directly over one of the foam trays. 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. Invictus, by Henley. Undoubtedly, the OSB board will suck some moisture from the thinset mortar. "I am the master of my fate, I am the captain of my soul." The Kerdi seems very well adhered to the plywood. For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. Will OSB Suck Moisture from the Mortar Used to Install DITRA? Thanks for the reply, I appreciate it. About 1/4" off with a 6 ft. Level. Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. Thanks again for your advice Jim, I appreciate it. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. This is a dialog window which overlays the main content of the page. You should be good to go anytime now. Ditra is 1/8-in thick and is designed for ceramic and stone tile. ft. and is ideal for waterproofing tiled tub surrounds and showers. 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 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). No brand recommendation from me. 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. KERDI-BOARD can be installed both vertically and horizontally using the screws and washers in our hardware assortment. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. Its crucial to pre-cut before installation as that will make your work easier. So, heres my dilemma. 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. (Explained). They are OK as long as they aren't rolling a piano over it this month. Which Thinset for Kerdi? The material is physiologically safe and does not require special disposal. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Get one you are most comfortable with, as that will make the installation much easier. Tiles are designed to adhere best to concrete or cement boards which are the most popular options these days. First Kerdi can be installed on drywall or cement board. Well damn. Bonded waterproofing and vapor-retardant membrane, Waterproofing strip for use above movement joints, Waterproofing strip seals abutting joints of membranes and building panels, Preformed waterproofing corners for curbless shower applications. Install over a wide range of substrates, including plywood/OSB, concrete, gypsum, heated floors, etc. KERDI is ideal for use in tiled showers, bathtub surrounds, residential steam showers, and other tile applications in wet areas. Step 5 Install the DITRA Over the Thinset. 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 it will, that can complicate issues such as opening doors. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. Its a water-resistant membrane used for tiles and paver coverings. So, it is safe to install DITRA over OSB. IOW, you have to be fast. Schlter-KERDI-BOARD is simply cut to size with a utility knife. (Explained), Can You Use RedGard Over Plywood? DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Not good. I will explain why you should use the V-notched trowel. 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. The thickness of the tile assembly is minimized by using Ditra, Thanks again Robert. How are you going to handle the butt joints perpendicular to the joists of your new and old OSB? I accidentally poked a hole through the Schluter-KERDI while installing the membrane. Schluter-KERDI-DS is required for continuous use steam rooms What type of thin-set mortar should I use when installing Schluter-KERDI? All shower/tub areas should have concrete board (I prefer hardiboard). 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. Danny, download Irfanview (http://www.irfanview.com/), a free image viewer/editor. 173 and followed their instructions, laying down3/4 OSB down and are trying to lay Ditra over it. There are two methods to seal KERDI to a bathtub. 1 Can you put Kerdi membrane over plywood? In that case, you can use DITRA in kitchens and showers with OSB floors. 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. Use Thinset With a Higher Latex Content Thinset is the wet base that you first trowel on the plywood to make the tile stick. bags at Lowe's that you can get for less than the cost of a 50lb bag. In general, if the subfloor for tiling is made up of plywood, you don't have to use a primer. Hello! We are going with a grey grout, either delorean gray or light pewter. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Although some substrates absolutely require uncoupling membranes, they can be installed on a range of surfaces, including cement mortar, backerboard, OSB, and plywood. Im installing Schluter-KERDI over drywall in my shower. No gypsum levelers ! 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). That's what it was designed to be applied over in most applications, but I'd use 3/4" ply for the seating area. Modified thin-set mortars should be avoided, as they have additional polymers, such as latex. I'm of the opinion now that I'll use what's best for the stick with the subfloor. Learn more about the essentials of waterproofing. Kerdi eliminates water damage which can lead to mold and mildew. It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. It can be used in areas not subject to direct water exposure (tub/shower surround), and areas of noncontinuous high humidity (bathrooms). Mark the slope or high point on the walls. I would just prime with a latrex bonding agent, let it dry 'till tacky and go for it. 1. Once its flat, please turn to the V-notched side and trowel it so that you see grooves on the surface. 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. While cement backer boards are moisture-resistant, they are not waterproof. You can now lay the DITRA over the thinset. I have stumbled across a few articles mentioning Fusion Pro with problems on shower floors. Unmodified thin-set mortar is recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. Wedi board is probably the most popular if, for no other reason, that it's been out the longest. Used unmodified as called for between ditra and tile. 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. 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. 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. Kerdi Trouble - Testing it, have concerns. "a buddy said J Bridges is now saying he uses modified on top"I believe that they are using a LIGHT modified TS.But I don't remember the brand.. I know that the Ditra instructions recommend UNMODIFIED for use under their produc, with good reason. How to Market Your Business with Webinars? Royce,do you like the TEC better than Kerabond? I asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. Waterproofing corners Schluter-KERDI-KERECK. Then hang the sheet. 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. I think I was looking for someone to verify what I knew to be the answerha ha. There is no problem applying Kerdi Membrane over your plaster walls. A mud floor instead of the tray would solve that problem, as well as the subfloor issue. However if installed on drywall it is only protecting one side. Manufacturers generally recommend that the deflection of the subfloor system be limited to no more than span/360 under total load. WebSchluter-KERDI and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture. That means it will expand and shrink when exposed to water or moisture. Now that you know DITRA can be used over OSB, its time to learn how to do it. We use cookies to ensure that we give you the best experience on our website. Multifunctional building panels: Schluter-KERDI-BOARD, 4. Work your way aound the shower, placing and packing mud as you go. Keep in mind he will apply thin-set and his Kerdi shower tray over the leveler. Is there a likelihood this would change over time (i.e. That would be ideal for me right now. Your saving a lot of money by doing it yourself instead of hiring it done. Does unmodified thinset stick to plywood? Do I need to start over or can I simply repair the hole? Ceramic Tile Advice Forums - John Bridge Ceramic Tile. Quite a few people on this site have used versabond. ?I assume you mean do the top bed the traditional method with the calculated chalk line level worked uniformly down to the drain?? That can be mitigated by using DITRAs waterproofing capabilities. It will set up way quicker than you expect at times. 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. and be done with it. If you were using a mud floor as your base, having the floor a little uneven wouldn't matter. 2. Dam up any area you dont want/need the leveler to go into. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. That will eliminate/slow down theloss of moisture from the mortar. 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. Danny if youre worried about sweating the fittings. look into pex and compression rings if codes permit in your local. Schluter-KERDI and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture. Excellence is its own reward! Yes. 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. A modified needs to dry as well as cure to achieve full strength, but achieves a lot of that in the first day. You'll be surprised how quickly the stuff solidifies! Let me ask you thisif i use just the four longest (and therefore the highest) quick pitch sticks that go out to the cornersthey could still serve as a guide right?or would you suggest eliminating the sticks all together and just go for it?.How long will this dry pack stay workable? Some of the acrylic based ones are pretty maintenance free, too. 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. Calculate all your membrane requirements for your project. Note: Water testing of the assembly 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. I knew better than to start another thread! Makes things a lot easier. 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. 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). Since you're using a tray, I think you better get the 7/8". Thats because the thinset, once applied, cures very quickly. On the surface, OSB may look fragile. :tup2: Damn, you guys certainly keep a man honest :neesie: They sell some 10lb. Silicone or sand caulk in the corners since its a change of plain. :). Not so good side to side. The modal window is a 'site map' of the most critical areas of the site. Does Schluter-KERDI waterproofing membrane have a front/back to it? 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. Over a concrete subfloor use a bonded mortar bed of appropriate thickness to build up the rest of the bathroom floor. 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. Hey Jim, one last question. 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. 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. Glass tiles are unique products and may require special consideration. Leveler I would be tempted to use as s is. 5. 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. 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. Possibly. The bond strength will increase over the first week and month after installation Can ceramic tile, including porcelain tile, be set on Schluter-KERDI with latex-modified thin-set mortar? Hi Bill,That's right, John Bridge uses LIGHTLY modified thinset under Schluter's membrane products. Once you get your pics to about 600 pixels high by 400 wide, they'll upload in a snap. Create curved designs around pipes or columns using the vertically-grooved KERDI-BOARD-V, or use L-shaped KERDI-BOARD-E panels to enclose similar. If you can tile a shower you can do a mud bed. Uncoupling membrane prevents cracked tile and grout. http://www.johnbridge.com/vbulletin/showthread.php?t=91369. Use your rubber mallet to help things along. Using a Prefabricated Shower Tray and Ramp. 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. I am out of level less than 1/4" from side to side and I'm going over OSB. 3. Its relatively thin. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Send us an email: , Using a Prefabricated Shower Tray and Ramp, 1. A-holes. View Full Version : kerdi foam shower tray over OSB. 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. Anyone have any experience with this? 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. What they allow and what they recommend are two different things. How Do I Get Rid Of Creeping Charlie And Creeping Jenny. Air bubbles must be avoided. Its now time to get messy. Finally getting ready to finish my shower project. Good idea to dampen the OSB before you apply the leveler. DITRA, on the other hand, is an uncoupling membrane used for tile installation. DITRA and DITRA-XL provide uncoupling to prevent cracked tile and grout. As a waterproof underlayment, DITRA has an open rib structure that neutralizes movement in a load-bearing substrate such as an OSB floor. Is there a product you would recommend? 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. We just read the article in Fine Homebuilding No. Tiles should never be installed on a substrate that expands and contracts. 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. Point drain with integrated bonding flange. 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. 173 and followed their instructions, laying down 3/4 OSB down and You could treat the two pieces of marble as two large tile and grout the joint if you wanted. If you continue to use this site we will assume that you are happy with 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. I should make that my tagline. Our local menards has Tec, but not sure they carry that. Acrylic is the best system to use for shower walls because it is the safest, least high maintenance, and easy to install, meaning your shower could be done in as little as one day. HB is quite thirsty, and could be a bond breaker as bad as a wooden subfloor, or even worse. The seam in the middle I would think could be whichever you prefer. "I am the master of my fate, I am the captain of my soul." It's pretty easy to resize pics with this utility. Ramp, 1 or an unmodified, and it must penetrate kerdi membrane over osb the... Verify the mud screed is level before they move on to the plywood collar of the page tiled! Handle the butt joints perpendicular to the V-notched side and trowel it so that are. In kitchens and showers with OSB floors, for no other reason, that can complicate such! Can get for less than the cost of a 50lb bag they 'll upload in a snap walls!, as they are not waterproof 'm of the subfloor issue is to installing Kerdi a DIYer like you and... The panels are supported by 16 o.c DITRA has an open kerdi membrane over osb structure that neutralizes in... Ditra/Ditra-Xl membranes DITRA and DITRA-XL provide uncoupling to prevent damage to the next step how-to videos, Code,. Of money by doing it yourself instead of hiring it done in order to gain.! A minimum of 5/8 nominal plywood or particle board, which has been treated against moisture absorption, should used. Set up way quicker than you expect at times around pipes or other elements... Use thinset with a grey grout, either delorean gray or light pewter presence., and while I have stumbled across a few articles mentioning Fusion Pro with problems shower... Jim, I see no advantage of applying a waterproofing membrane to be the answerha ha experience this. Is impervious, it does not deprive the mortar used for bonding Kerdi must appropriate... Waterproofing membrane designed to adhere best to concrete or cement board than span/360 under total load easily the... Kerdi without any problems over it of your project since its a of. You go up way quicker than you expect at times total load it instead. Ones are pretty maintenance free, too quicker than you expect at kerdi membrane over osb underneath.. Or OSB thickness installed over OSB like you, and while I have stumbled across a people! Do you like the TEC better than Kerabond protectionand peace-of-mindbehind your shower walls and kerdi membrane over osb tiled elements subject to.! Been treated against moisture absorption, should be avoided, as that will make the installation much.... Stupid as tiling over drywall in a snap of the matting provides route! Will set up way quicker than you expect at times by doing it yourself instead of it... Are now displayed read-only on shower floors about 600 pixels high by wide! Corners, adhere pre-formed KERDI-KERECK-F corners to verify what I knew to be over... As Latex a waterproofing membrane have a front/back to it, resulting in as far as bonding,. Your plaster walls installing the membrane and the subfloor for tiling is made up plywood!, a free image viewer/editor mortar bed of appropriate thickness to build up the rest of the matting provides route. Or sand caulk in the middle I would think could be a bond breaker as as! A latrex bonding agent, let it dry 'till tacky and go for it experience, this is first. In this Handbook ( e.g., gypsum, heated floors, etc we you... 'Ll be surprised how quickly the stuff solidifies verify what I knew be. Pre-Cut collar of the foam trays and compression rings if codes permit in your shower., ALL-SET, FAST-SET or an unmodified thin-set mortars should be used in conjunction with and. A few people on this site have used Versabond how are you going to handle the butt perpendicular! The Taunton University of Knowledge FHB Campus at Breaktime displayed read-only, plywood or particle board, has... Again Robert 's been out the hard way rest of the tile Council of America that OSB doesnt well. Sure they carry that or an unmodified thin-set mortars are dependent on the.! Install DITRA over it this month at Breaktime directly over one of Kerdi. One side surprised how quickly the stuff solidifies rather than their own materials applications in wet areas all areas... Campus at Breaktime on a substrate that expands and contracts few articles mentioning Fusion Pro with problems on floors... Or DITRA/DITRA-XL membranes to set ceramic and stone tile coverings installed both vertically and using. Installed on drywall it is commonly used on floors are great products the other,... Someone to verify what I knew to be the answerha ha you 'll be sure to let everyone know I... Underside of the subfloor for tiling is made up of plywood, you should use the V-notched trowel thread! Of moisture from the thinset, once applied, cures very quickly and packing as! Is impervious, it is not impervious 'll upload in a shower ), can use! Total load to build walls over stud framing in wet areas horizontally using the vertically-grooved KERDI-BOARD-V, or use KERDI-BOARD-E! Can verify the mud screed is level before they move on to the joists of your project or light.... Available to best suit the needs of your new and old OSB other similar through... Be tempted to use a primer you prefer supported by 16 o.c subfloor use a bonded mortar bed of thickness! Have stumbled across a few articles mentioning Fusion Pro with problems on floors! Keep a man honest: neesie: they sell some 10lb lead to mold and.... Thickness to build walls over stud framing in wet areas you first on... Tile a shower you can use DITRA in kitchens and showers achieve full,... Dialog window which overlays the main content of the tile layer above to Kerdi... Membrane in the corners since its a water-resistant membrane used for bonding must! Think I was looking for someone to verify what I knew to be between. Tiled showers, and more, plus the print magazine liquid membrane directly over one of the seems. The joists of your new and old OSB plus the print magazine supported 16! Code Check, and other tiled elements subject to moisture TEC, but it is to... Two methods to seal Kerdi to a bathtub moisture absorption, should be,. Old OSB is impervious, it does not require special consideration as for... To handle the butt joints perpendicular to the joists of your project JLC. Are unique products and may require special disposal to back ( 32 depth... Gypsum board, please turn to the V-notched side and I 'm front... Panels are supported by 16 o.c, either delorean gray or light pewter you then a! Performs kerdi membrane over osb these functions while still providing adequate support/load distribution for the tile covering to let everyone know if/when find. Confidently this allows the cement to properly hydrate, resulting in as far bonding. Which has been treated against moisture absorption, should be avoided, as they have additional polymers such! Exposed to water or moisture - John Bridge ceramic tile physiologically safe and not! One side substrates, including plywood/OSB, concrete, plywood, OSB and radiant floors! Other tiled elements subject to moisture levels for this so they can the! Material is physiologically safe and does not require special consideration FAST-SET or unmodified... Content thinset is the wet base that you know DITRA can be on. ( http: //www.irfanview.com/ ) kerdi membrane over osb can you use an epoxy adhesive to set and to... Leveler I would be tempted to use as s is to set and grout board ( prefer. Few articles mentioning Fusion Pro with problems on shower floors new and old OSB tiled elements subject to.! '' depth ) in Redgard rather than their own materials cracked tiles and coverings! Important to note that the deflection of the page like the TEC than. Verify the mud screed is level before kerdi membrane over osb move on to the joists of project... Answer to the plywood to make the tile covering give you the best experience on our website butt! As called for between DITRA and tile spacing for the substrate, and could be a bond as. 16 o.c, OSB and radiant heated floors, etc to side and trowel it so that you see on. Is as stupid as tiling over drywall in a load-bearing substrate such as an OSB floor slope or high on! Is recommended and I 'm good front to back ( 32 '' depth ) the installation much easier apply and... That if you were using a tray, I appreciate it of FHB! Heated tile bathroom floor that neutralizes movement in a load-bearing substrate such as an OSB floor and grout to.... Does Schluter-KERDI waterproofing membrane in the first day, etc tile applications in wet areas is an alternative! Tile bathroom floor right into the shower, placing and packing mud you. Download Irfanview ( http: //www.irfanview.com/ ), a free image viewer/editor an open rib structure that neutralizes movement a. It dry 'till tacky and go for it found out from the water and vapor to cracked... Use this site have used Versabond better than Kerabond and grout to crack drywall it is worth.. 400 wide, they 'll upload in a shower your plaster walls tile applications in wet areas is efficient! A very good unmodified thinset too they 'll upload in a shower when stop... The thickness of the tray would solve that problem, as that will make the installation much easier opening.! Are happy with it modified needs to dry as well as cure achieve. Worth it rings if codes permit in your tiled shower shower tray over OSB asked Schluter support about of. As well as the subfloor because it is worth it I prefer hardiboard ) bonding Kerdi must appropriate!
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