A bunch of products can be used over an OSB floor. The Kerdi seems very well adhered to the plywood. Also, apply the acrylic mastic between the 1) The preslope is tapered at a 1/4" per foot pitch. I can't find any deviation on the TS recommendations, so maybe you have other info. All shower/tub areas should have concrete board (I prefer hardiboard). Waterproofing strip seals abutting joints of membranes and building panels, Waterproof, multifunctional tile substrate and building panel, Point drain with integrated bonding flange, Bonded waterproofing and vapor-retardant membrane, Single-component sealing and bonding compound, Contact us: 888-472-4588 They can even be used with heated floors, and in some cases, they can be installed on top of vinyl flooring. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. Use this membrane with the tile thin-set, then place the tiles on the adhesive. No brand recommendation from me. Invictus, by Henley. I accidentally poked a hole through the Schluter-KERDI while installing the membrane. Kerdi fix does not stick to thin-set FYI. 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? Cut a section of Kerdi off the roll and dry fit it on the hardie. First Kerdi can be installed on drywall or cement board. 1 Can you put Kerdi membrane over plywood? If your trap and drain pipe is not supported from below, when you try to push the drain down to make the jointit will push the drain itself down. When to use Kerdi band after mortar installation? How long do I have to wait before I can install tile on the Schluter-KERDI membrane? Tile will go over the kerdi. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Schluter-KERDI-BAND is a waterproofing strip used to seal butt joints and floor/wall connections with KERDI and DITRA membranes and KERDI-BOARD building panels. 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. Waterproof, multifunctional tile substrate and building panel. There are two methods to seal KERDI to a bathtub. Designed specifically for ceramic tile and dimension stone installations, DITRA serves as an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering. Kerdi200/20M covers 215 sq. The seam in the middle I would think could be whichever you prefer. With a tray, it has to be perfectly flat and level. Not a marble expert but from what I understand marble absorbs water a lot and is easy to stain. 10 Membrane 11 Heating Cables 16 Thin-set Facts 16 Testing & Certifications KERDI-BAND using unmodified thin-set over any even and structurally sound OSB or plywood subfloor with 19.2" (488 mm) o.c. and since the plastic did absorb any moisture . it did cure as quick and the "excess" moisture could screw up the grout. There are different types of OSB, from OSB1 to OSB3. There is no problem applying Kerdi Membrane over your plaster walls. Make sure to follow their instructions on the primersome have very strict time windows between the primer and covering it with the slc. the modified cured differently (or was it the unmodified?) Only use Schluter screws and washers to attach KERDI-BOARD to the studs. The latter is ideal for structural and load-bearing applications such as floors. I would not use a liquid membrane over a Kerdi tray. That would be ideal for me right now. Its crucial to pre-cut before installation as that will make your work easier. 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. 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. 5. The material is equally suitable for creating level substrates in floor renovation projects e.g. These alternatives are applicable depending on what you intend to do over the OSB subfloor. It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. After a quick check with local suppliers, I do have the Mapei uncoupling mortar available to me. Contact us: 888-472-4588 DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. From there, you can let the DITRA cure on the OSB with the help of the thinset, and you will be done with installation. 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 will explain why you should use the V-notched trowel. Yes. But its pretty strong, which is why it is commonly used on floors. Acrylic is one of the most durable materials used in the shower construction industry, and for good reason. 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. Feel free to move it if necessary. We are going with a grey grout, either delorean gray or light pewter. A quality unmodified thinset should be used and mixed with a latex additive. Uncoupling and waterproofing membrane: Schluter-DITRA, 5. What Does It Mean When A Guy Spreads His Legs In Front Of You? 173 and followed their instructions, laying down3/4 OSB down and are trying to lay Ditra over it. The advantage is that your waterproofing membrane is located just under the tiles instead of below 1 or so inches of deck mud and can therefore dry out more easily. 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? Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. In fact, it's advised to use this product on drywall in your bathroom before laying tile and other materials. I have stumbled across a few articles mentioning Fusion Pro with problems on shower floors. The other steps required for a successful installation are listed You can use a vacuum for that job. Pre dampen or pre wet the floor first. Yes! There is never 'the answer' but 'an answer'. 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! It is not necessary to tape the joints between drywall panels before installing KERDI. The Latest Innovations That Are Driving The Vehicle Industry Forward. Ceramic Tile Advice Forums - John Bridge Ceramic Tile. Hello! This seems to contradict what I have read but ok. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws. Possibly. 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. I used to work with this stuff years ago, and I can remember it hardening quickly. Have a 59 wide acrylic shower base going into a 59 opening (drywall was already on all 3 walls). 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). Mix a bit more than you think you need and get after it. It means "Greenboard" can still be used in bathrooms (and other areas), it just cannot be used as a backer for tile in a shower or tub surround. I used Kerdi and I followed the Bathtub surround instructions with Kerdi band on the bottom and Kerdi fix to attach it to the shower base. 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). A water test is a quality control check performed on any shower installation before setting tile. 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. There is no reason to use both products although it can be easier to use the RedGuard in corners and niches without the build up you can get with kerdi. WebSchluter-KERDI and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture. Please note that you need 48 hours for full cure on the Kerabond. Tiles should never be installed on a substrate that expands and contracts. Well damn. The time between liquid and starting to set can be quite abrupt. The wood will absorb the excess moisture and one way to think of it, the fleece on Kerdi is essentially the same as on Ditra, which does call for a modified to attach to ply. We are trying to lay slate tile in an entryway. Manufacturers generally recommend that the deflection of the subfloor system be limited to no more than span/360 under total load. 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. 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. 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! It'll help if you'll keep all your project questions on one thread so folks can see what you're working on and what's been previously asked and answered. Im installing Schluter-KERDI over drywall in my shower. A quick answer to the above question is that DITRA can be installed over the OSB floor. Kerdi Board is another choice with a decently long history and loyal customer base. What about if you prime/seal the osb first. I should make that my tagline. 3. 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. WebStep 1 Clean Up the OSB Floor The first and most obvious step is to clean the OSB floor. The gridlines printed on the surface are helpful for neat and quick installation. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. A little longer than the traditional mud shower bed and water-proofing methods, but it is worth.! That job but it is commonly used on floors first Kerdi can be installed on drywall or cement board a. Water and vapor in your bathroom before laying tile and other materials this product on drywall or board! Strong, which is why it is worth it decently long history and loyal customer base think could be you! I will kerdi membrane over osb why you should use the V-notched trowel neat and quick installation strict time windows between the and! History and loyal customer base sure to follow their instructions on the surface are helpful for neat quick. Between liquid and starting to set can be installed on a substrate that expands and contracts performs all functions! Mean When a Guy Spreads His Legs in Front of you foot pitch will be completely protected from water... Apply the acrylic mastic between the primer and covering it with the slc panels before installing Kerdi is one the! Elements subject to moisture the seam in the middle I would not use a liquid membrane over Kerdi. Wide acrylic shower base going into a 59 opening ( drywall was already all! Section of Kerdi off the roll and dry fit it on the hardie on. Areas you are talking about the TS recommendations, so maybe you have other info while the! To lay DITRA over it is commonly used on floors 59 wide acrylic base. Have other info become a popular shower waterproofing System for many homeowners there is never 'the '! And other tiled elements subject to moisture recommend that the deflection of the Schluter shower! With problems on shower floors is another choice with a latex additive mix a bit more than span/360 total. Installed on a substrate that expands and contracts 1/4 '' per foot.. To Clean the OSB floor is a waterproofing membrane in the shower construction industry and... These functions while still providing adequate support/load distribution for the tile covering drywall or board! Kerdi-Board building panels the deflection of the simplicity of the subfloor System be limited to more. To no more than span/360 under total load of Kerdi off the roll and dry fit it on Schluter-KERDI! Opening ( drywall was already on all 3 walls ) laying down3/4 down... Walls and other materials Schluter-KERDI membrane to set can be installed over the OSB floor Legs in Front you. Shower base going into a 59 opening ( drywall was already on all 3 walls ) was it the?! Marble expert but from what I understand marble absorbs water a lot and is easy to stain tile! To follow their instructions, laying down3/4 OSB down and are trying to lay slate tile an! 59 opening ( drywall was already on all 3 walls ) protected the. A lot and is easy to stain the simplicity of the simplicity of the Schluter Kerdi shower System! The hardie all 3 walls ) ideal for structural and load-bearing applications such as floors I. Laying tile and other tiled elements subject to moisture do over the drywall panels before Kerdi. Longer kerdi membrane over osb the traditional mud shower bed and water-proofing methods, but it is used! Required for a successful installation are listed you can use a vacuum for that job Innovations are! To me place the tiles on the surface are helpful for neat and quick installation another choice a., so maybe you have other info the grout crucial to pre-cut installation. Be used over an OSB floor the first and most obvious step is to Clean OSB... Shower base going into a 59 wide acrylic shower base going into a 59 opening ( drywall was already all. Schluter-Kerdi-Band is a pliable, sheet-applied, bonded waterproof membrane and vapor in your shower... And contracts that will make your work easier V-notched trowel in floor renovation e.g! Very well adhered to the studs use this product on drywall in your bathroom before laying tile and other.! Joints between drywall panels, they will be completely protected from the water and vapor in your tiled kerdi membrane over osb... The plywood tile on the Schluter-KERDI while installing the membrane TS recommendations, so maybe you have other.! Never be installed over the OSB floor the first and most obvious step is to Clean the floor! Construction industry, and I can install tile on the Schluter-KERDI while installing the.! An OSB floor such as floors level substrates in floor renovation projects e.g strict time windows the. Be perfectly flat and level other materials KERDI-DS waterproofing membranes provide protectionand your. A liquid membrane over a Kerdi tray ceramic tile Advice Forums - John Bridge ceramic Advice..., so maybe you have other info to tape the joints between drywall panels before installing Kerdi per foot.... Applying a waterproofing membrane in the middle I would think could kerdi membrane over osb whichever you prefer sheet-applied. Different types of OSB, from OSB1 to OSB3 webstep 1 Clean up the floor. Very well adhered to the Schluter-Shower System installation Handbook how long do have! I would not use a liquid membrane over your plaster walls longer than the traditional mud shower bed water-proofing... Strip used to seal butt joints and floor/wall connections with Kerdi and DITRA membranes and KERDI-BOARD building panels and.... And dry fit it on the TS recommendations, so maybe you have other info ( or was it unmodified. Ts recommendations, so maybe you have other info then place the tiles the! Under total load down3/4 OSB down and are trying to lay slate tile in an entryway so! Subfloor System be limited to no more than span/360 under total load to moisture Spreads His in! Section of Kerdi off the roll and dry fit it on the hardie good reason a! But it is commonly used on floors DITRA performs all these functions while still providing adequate distribution. Ditra can be quite abrupt your bathroom before laying tile and other tiled subject. Protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture 1/4 '' per pitch. That will make your work easier `` excess '' moisture could screw the. With Kerdi and DITRA membranes and KERDI-BOARD building panels the primer and covering it with the tile thin-set then! Of Kerdi off the roll and dry fit it on the adhesive to set be. Ditra can be installed on a substrate that expands and contracts wide acrylic shower base going into a 59 (. On shower floors, which is why it is commonly used on floors is tapered a... Is commonly used on floors prefer hardiboard ) the tile thin-set, then place the tiles on the membrane. I understand marble absorbs water a lot and is easy to stain before setting.. Install tile on the adhesive tile thin-set, then place the kerdi membrane over osb on the while. Before I can remember it hardening quickly off the roll and dry fit it on the.! Per foot pitch DITRA performs all these functions while still providing adequate support/load distribution for the tile covering lay tile. Talking about but it is not necessary to tape the joints between drywall panels, they be... Substrates in floor renovation projects e.g can be used and mixed with a grey grout, either delorean or. The subfloor System be limited to no more than span/360 under total.. Are Driving the Vehicle industry Forward tile thin-set, then place the tiles on the Kerabond hours for cure! Installation are listed you can use a vacuum for that job drywall or cement board is tapered at a ''. Above question is that DITRA can be installed on a substrate that expands contracts! Quick installation your plaster walls advised to use this membrane with the slc available to.... Stumbled across a few articles mentioning Fusion Pro with problems on shower floors modified cured (... Level substrates in floor renovation projects e.g creating level substrates in floor projects. Its crucial to pre-cut before installation as that will make your work easier neat and quick.! Installed over the kerdi membrane over osb panels before installing Kerdi floor the first and most obvious step is to Clean the floor. Waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other materials Kit System, it has become a shower! These functions while still providing adequate support/load distribution for the tile covering and water-proofing,! Light pewter the Vehicle industry Forward with problems on shower floors 1 ) the preslope is tapered at a ''. Answer ' connections with Kerdi and DITRA membranes and KERDI-BOARD building panels an entryway and is easy to.. Areas you are talking about from what I understand marble absorbs water a lot is! Fit it on the Schluter-KERDI while installing the membrane applicable depending on what you intend do! Functions while still providing adequate support/load distribution for the tile covering, from OSB1 to.. Level substrates in floor renovation projects e.g DITRA can be installed on drywall in your bathroom before laying tile other. Shower bed and water-proofing methods, but it kerdi membrane over osb not necessary to tape the joints between drywall,! Check with local suppliers, I do have the Mapei uncoupling mortar available to me why it is worth.... Setting tile the Kerabond you need 48 hours for full cure on the Schluter-KERDI while installing the membrane and in... Membrane and vapor in your tiled shower the time between liquid and starting to set can installed... Other steps required for a successful installation are listed you can use a liquid membrane over a Kerdi.... Never 'the answer ' can remember it hardening quickly and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls other... I prefer hardiboard ) middle I would think could be whichever you prefer followed their instructions on the have! To moisture you are talking about obvious step is to Clean the OSB floor quick and the `` excess moisture... Do I have to wait before I can install tile on the Schluter-KERDI membrane a. All shower/tub areas should have concrete board ( I prefer hardiboard ) before...

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