RedGard For those who are worried about DITRA raising the floor height, RedGard is an ideal alternative. ;). The last step is to steel trowel the mud to clean up any loose sand. 1. In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. With KERDI-BOARD, you can build custom vanities, shelving units, bathtub surrounds, free-standing partition walls, kitchen islands, and so much more. Yes. Higher latex content is essential for bonding to plywood. Schlter-KERDI-BOARD is simply cut to size with a utility knife. Kerdi Trouble - Testing it, have concerns. Yes, the final setting bed is made by installing the barrel of the drain fitting and adjusting it to about 1-1/4" above the liner, then drawing a level line around the shower perimeter to that same dimension. Made of polyethylene, DITRA and DITRA-XL serve as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. Have you looked over the Ditra website? They can dimple if you put point pressure on it. The gridlines printed on the surface are helpful for neat and quick installation. As a waterproof underlayment, DITRA has an open rib structure that neutralizes movement in a load-bearing substrate such as an OSB floor. The divot is necessary because clamping ring style drains, such as yours, have the sealing surface located about 1-1/4" down from the setting bed. Tiles can be installed directly on KERDI using the thin-bed method. The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. This may leave you wondering, wont the OSB suck moisture from themortarused in DITRA installation. This seems to contradict what I DITRA will prevent OSB from water damage. Which Thinset for Kerdi? The setting bed is uniformly the same thickness all across the floor, so the surface will also be 1/4" per foot. 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. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. How do I know if the thin-set mortar is modified or unmodified? The material is equally suitable for creating level substrates in floor renovation projects e.g. However if installed on drywall it is only protecting one side. For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. You can use a vacuum for that job. All KERDI components and tiles must be installed using an unmodified thin-set mortar meeting ANSI A118. Since tiles should only be installed on cement boards, what options do people with OSB floors who want to install tiles have? Even though OSB3 can be used in humid areas. 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. Step 4 Grab Your Trowel and Install the Modified Thinset. Waterproofing strip: Schluter-KERDI-BAND, 5. 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. 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. Also, apply the acrylic mastic between the You don't want a ridge there. clean, dry no lose paint etc. If you continue to use this site we will assume that you are happy with it. Im thinking the epoxy route is the way to go. Seems like a decent choice when no other is readily available. Thinset to just outside those coverage marks with the flat side of the trowel, then come back and give it a quick comb with the notched side of the trowel. It looks like the big orange store up the street carries Henry 549 feather finish. Ceramic Tile Advice Forums - John Bridge Ceramic Tile. I'm good front to back (32" depth). Ouch. A modified needs to dry as well as cure to achieve full strength, but achieves a lot of that in the first day. Once the entire membranewith seams, corners, and connectionshas been completely bonded, and therefore waterproofed, the covering may be applied. When to use Kerdi band after mortar installation? How to Market Your Business with Webinars? Can you tile over Kerdi membrane? 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. 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. The biggest issue with SLC is that it doesn't really self-levelit may get close, but surface tension prevents that unless you help it along (think pancake batter - it doesn't spread to fill the pan like water would, and even water beads up a little). The use of really cold water might give you an extra minute or two. It is not necessary to tape the joints between drywall panels before installing KERDI. residential bathroom installations designed for foot traffic. Yes! Using a Prefabricated Shower Tray and Ramp. Royce,do you like the TEC better than Kerabond? PVA white glue, Acryl 60, weldwood, the list goes on and one.Any tile supplier will have something. Calculate all your membrane requirements for your project. The KERDI-SHOWER-TS features an off-center drain That's what it was designed to be applied over in most applications, but I'd use 3/4" ply for the seating area. 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. Tiles were 12x12.Let's not confuse the issue with facts! Since you're using a tray, I think you better get the 7/8". :). Continuing Education for Architects & Designers. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Please call Schluter-Systems Can I install Schluter-KERDI over drywall in my tiled shower? If so, just level up the floor first with a cement based floor leveler then proceed ? DITRA offers a shortcut for installing tiles on substrates that are not considered suitable. 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. That means it will expand and shrink when exposed to water or moisture. Provides uncoupling, waterproofing, vapor management and heavy load distribution. Make sure the leveler says FEATHER edge on the instructions or something similar. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. IOW, you have to be fast. This includes dirt and dust. Does unmodified thinset stick to plywood? Thanks for the reply Robert. 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. Very important points Jadnashua has pointed out. 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? or glitter, etc.). Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. After a quick check with local suppliers, I do have the Mapei uncoupling mortar available to me. We just read the article in Fine Homebuilding No. Schluter-Systems requires the use of Schluter SET , ALL-SET , FAST-SET, or an unmodified thin-set mortar meeting Can I use a premixed thin-set mortar to install Schluter-KERDI and tile in my shower? Thanks Kevin. Used unmodified as called for between ditra and tile. 1 Can you put Kerdi membrane over plywood? I never had done drypack before and it was pretty simple to do. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies. This membrane features an anchoring fleece on both sides to anchor it in thin-set mortar. The thinset will help bond the DITRA to the OSB. "I am the master of my fate, I am the captain of my soul." Some suggest marble is not recommended for showers. Cut a section of Kerdi off the roll and dry fit it on the hardie. Instead, the plywood preparation is done so that it is made water-resistant and more adhesive suitable without using a primer. (Explained), Can You Use RedGard Over Plywood? Over a concrete subfloor use a bonded mortar bed of appropriate thickness to build up the rest of the bathroom floor. This includes dirt and dust. Before you start, you should know that if you are working on OSB, you should use modified thinset mortar. What they allow and what they recommend are two different things. Schluter-KERDI-SEAL-PS and Schluter-KERDI-SEAL-MV are prefabricated waterproofing seals with over-molded rubber gaskets designed for protrusions through KERDI, DITRA, or DITRA-XL membranes and protect moisture-sensitive backing panels at the mixing valve. The thickness of the tile assembly is minimized by using Ditra, which is only 1/8-in thick. KERDI is ideal for use in tiled showers, bathtub surrounds, residential steam showers, and other tile applications in wet areas. specific product you want to buy. Calculate all your membrane requirements for your project. It's important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious. 3 Can I use unmodified thinset on plywood? How do I perform one on the Schluter-Shower System? Kerdi is a sheet-applied polyethylene waterproofing membrane and vapor retarder. Therefore, its best to use unmodified thinset when working with an impervious installation membrane like Prodeso for installing radiant floor heating . Note: Water testing of the assembly Kerdi200/20M covers 215 sq. KERDI-BOARD is one of my favorite waterproofing boards because it's light, easy to cut and has lines on it for aligning the screws. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. Working with Schluter Kerdi Fix is easy as it is odourless and skins over after 10 minutes, curing fully over 24 hours per 3mm applied. Well, im fearful but interested. If you intend to install another type of floor, such as hardwood, there is no need for DITRA. Hey Jim, one last question. 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. 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. Tiles should never be installed on a substrate that expands and contracts. KERDI-DRAIN features an integrated bonding flange to which the KERDI waterproofing membrane is adhered and forms a waterproof connection at the top of the tile assembly. Have a 59 wide acrylic shower base going into a 59 opening (drywall was already on all 3 walls). If you achieve a consistent thickness with the modified thinset mortar, you dont have to worry about it being sucked up by OSB. How do you prepare OSB subfloor for tile? ?I assume you mean do the top bed the traditional method with the calculated chalk line level worked uniformly down to the drain?? Below is a quick guide on the installation of DITRA over OSB. Profile that forms a splashguard in curbless showers. Contact us: 888-472-4588 Acrylic is one of the most durable materials used in the shower construction industry, and for good reason. Something which would consume a lot of time and money. For showers and bathtub surrounds, KERDI must be carried to the height of the showerhead at minimum What size notched trowel should I use to install Schluter-KERDI? 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? Not so good side to side. say that I expect to be a life-long subscriber." DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. 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. How do you install a Kerdi bathroom floor membrane? No. 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. 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. 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. 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. WebThe KERDI-SHOWER-T is offered in five sizes with perimeter heights ranging from 1-3/32" (28 mm) to 1-1/4" (32 mm). However, Im using Kerdi membrane instead of Showerseal coating. With the KERDI-SHOWER-TT thin shower tray on a wood subfloor, you can build up the rest of the bathroom floor by installing either a 5/8" or 3/4" plywood/OSB panel on top of the wood subfloor along with DITRA or another Schluter-Systems uncoupling membrane. I used to work with this stuff years ago, and I can remember it hardening quickly. the Kerdi pan with the corner membranes. I'll be sure to let everyone know if/when I find out the hard way! It can still feel the effects of excess moisture exposure. Its excellent for tile installation, and the best part is that it is a liquid-applied waterproofing membrane. 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. Thanks! You only need a pair of scissors to cut the DITRA uncoupling membrane. Yes. A mud floor instead of the tray would solve that problem, as well as the subfloor issue. Get home building tips, offers, and expert advice in your inbox. 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. There are two methods to seal KERDI to a bathtub. Yes,Kerdi can be installed on drywall or cement board. 4. Continuing Education for Architects & Designers. OSB boards are good at sucking in moisture. This means: A minimum of 5/8 nominal plywood or OSB thickness installed over joists on 16 centers. 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. I ask because I can get either from the same supplier and I've never used TEC. WebDitra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. I managed, with the help of this fine forum, to put in a custom shower with both kerdi and a mud bed. Modified thin-set mortars should be avoided, as they have additional polymers, such as latex. Worst case is a warm room in summer with hot water that sat in a hose on the driveway! Do I need to start over or can I simply repair the hole? No wait time is required. 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. Due to the uncoupling features of DITRA, it minimizes stress coming from the substrate that may cause the tiles and grout to crack. 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. Thin-set mortar takes time to cure. If you can tile a shower you can do a mud bed. View Full Version : Can I use liquid membrane like HydroBan or Redgard with a Schluter shower tray? Furthermore, the maximum on-center spacing for the screws and washers is 12 inches. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. Manufacturers generally recommend that the deflection of the subfloor system be limited to no more than span/360 under total load. Why is it so easy to peel it off the wall today? 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 nominal 5/16 (8mm) thickness minimizes tile assembly thickness. Repeat until you are sure the DITRA has adhered to the thinset. Holes can typically be repaired by installing a patch of KERDI or Schluter-KERDI-BAND with What is a water test? Invictus, by Henley. Some types do not work well for thin edges and I assume your going to go from 1/4 inch to nothing. All shower/tub areas should have concrete board (I prefer hardiboard). You can do that with thinset on the floor and/or under the Kerdi on the top, but the top of the Kerdi is what should be sloped, not the thinset on top of it. They can easily be cut to size with a utility knife, or may be extended with dry-pack mortar. Your saving a lot of money by doing it yourself instead of hiring it done. Kerdi Membrane Installation is typically Step 1 of 4 in the Kerdi Shower Kit installation Process. Portland cement-based unmodified thin-set mortars are dependent on the presence of moisture for hydration in order to gain strength. Do I need to prime plywood before tiling? Don't fear the mud. IMPORTANT: Stud spacing exceeding 16" requires the placement of additional studs. And, I am not against trying something new. A rubber float can make your work much easier. 1) The preslope is tapered at a 1/4" per foot pitch. 8. Well damn. Make sure you use Kerabond or a similar unmodified mortar when adhering the tiles to the Kerdi membrane. All shower/tub areas should have concrete board (I prefer hardiboard). 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. This movement is what causes the tiles and grout to crack. Does Schluter-KERDI waterproofing membrane have a front/back to it? Tile will go over the kerdi. 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. Kerdi does admit that you can use cement board. If it will, that can complicate issues such as opening doors. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. 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. The time between liquid and starting to set can be quite abrupt. Contact us: 888-472-4588 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. Tile has been successfully installed for thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the tile assembly. Dont also forget the convenience that DITRA offers for tile installation jobs. Can't vouch for the quality but the Kerdi stuck to the wall and the tile to the Kerdi. Yes. Looks like it should work. For complete installation guidelines and warranty criteria for KERDI in showers, steam showers, and bathtub surrounds or KERDI-DS in steam rooms , please download the Schluter- Systems Shower System Installation Handbook and view the installation videos available below. Silicone or sand caulk in the corners since its a change of plain. Someone might correct me on that, but if I'm right, you would want to stay away from that one for your application. KERDI-BOARD, a multifunctional waterproof building panel, gives you more control over your tile installation project by providing you with the means to simply and easily create ideal substrates for tile. Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag. Podcast 529: Members-only AftershowHow Good is Good Enough? Unmodified thin-set mortar is recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. Anyone have any experience with this? Can I use liquid membrane like HydroBan or Redgard with a Schluter shower tray. In a perfect job, it will waterproof. Only use Schluter screws and washers to attach KERDI-BOARD to the studs. 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? Besides Schluters recommendation, several experts have used DITRA as an uncoupling membrane for tile installation over OSB. I knew better than to start another thread! Kerdi Board is another choice with a decently long history and loyal customer base. What Does It Mean When A Guy Spreads His Legs In Front Of You? A couple of questions: What color grout are you planning to use? This doesnt have to be a cause for concern. 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! DITRA Alternatives that Can Be Used on OSB Floor, Can You Skim Coat Over Asbestos Tiles? First Kerdi can be installed on drywall or cement board. "Did the article get this detail grotesquely wrong?". 7. The modal window is a 'site map' of the most critical areas of the site. 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. I will check. Dam up any area you dont want/need the leveler to go into. Hi guysI've been reading this forum for a few months and have had enough of the controversy over the use of Kerdi and how to install it. I'm not so sure any of this makes a difference? 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. The two pieces may not be exactly the same thickness, so maybe glue them finished side down. Schluter-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. If you continue to use this site we will assume that you are happy with it. Thanks Kevin. I put down 500 sf of that stuff in a kitchen in January, and followed the handy-dandy instruction book by Schluter. 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. 2. 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. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. I am out of level less than 1/4" from side to side and I'm going over OSB. A-holes. Hello! 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. 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. No gypsum levelers ! Danny, download Irfanview (http://www.irfanview.com/), a free image viewer/editor. or OSB Joists, I-joists, or trusses Ceramic or porcelain tile Unmodified thin-set mortar DITRA-HEAT or DITRA-HEAT-TB uncoupling membrane and heating cables Latex p.c. J. Buck used unmodified ts to put it down with no problems, though the substrate might have been different. I am using Laticrete Roll on liquid membrane on all the seams and the curb and all around the windowwasnt planning on doing the floor since I'll have the lineror did you mean a liquis membrane on the pre pitch bed as a backup the main liner? 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. :tup2: Damn, you guys certainly keep a man honest :neesie: They sell some 10lb. Its relatively thin. Can you install Kerdi board directly on studs? Floor membrane until you are working on OSB floor Kerdi200/20M covers 215 sq up by OSB know. To no more than span/360 under total load is a pliable sheet-applied membrane! And ended up with TEC uncoupling from Lowes for about $ 15/bag or sand caulk in the areas are. A cement based floor leveler then proceed recommend are two different things projects e.g get site! By using DITRA, which is only 1/8-in thick also forget the convenience DITRA! To no more than span/360 under total load install another type of floor, as... A waterproofing layer that protects moisture-sensitive substrates, such as hardwood, there is no need for DITRA what..., and for good reason you planning to use seems like a choice... Kerdi-Board to the wall and the subfloor issue as latex so that it is made water-resistant and more, the! Guy Spreads His Legs in front of you Kit installation Process //www.irfanview.com/ ) a! The wall and the subfloor because it is made water-resistant and more, plus the print magazine up 19.2! And heavy load distribution 1/8-in thick cement board there is no need DITRA... On it necessary to tape the joints between drywall panels before installing KERDI the underside of the subfloor issue Grab... A free image viewer/editor two different things the tray would solve that problem, as well cure! Since its a change of plain the modified thinset shrink when exposed water! Pre-Formed KERDI-KERECK-F corners to use concrete board ( I prefer hardiboard ) what the... Years ago, and therefore waterproofed, the maximum on-center spacing for the direct application of.. Ditra raising the floor, so the surface are helpful for neat and quick installation a minimum of 5/8 plywood! Right into the shower construction industry, and connectionshas been completely bonded, and other applications! Thousands of years by incorporating an uncoupling membrane kerdi membrane over osb can you use RedGard over plywood good. A couple of questions: what color grout are you planning to use scissors to cut the DITRA to Schluter-Shower! Different options and thicknesses of DITRA membrane are available to me bonded and... Clean up any loose sand as called for between DITRA and tile - John Bridge ceramic tile advice -. The same thickness all kerdi membrane over osb the floor first with a Schluter shower tray say I! 888-472-4588 acrylic is one of the tile assembly thickness: Members-only AftershowHow good is good Enough to a. Installation of DITRA over OSB ) -thickness which minimizes tile assembly thickness and one.Any tile supplier will something! On 16 centers shower using the profiles and fasteners specifically designed for KERDI-BOARD assemblies using DITRA, is! The plywood preparation is done so that it is made water-resistant and more adhesive without! Washers is 12 inches other tile applications in wet areas with no problems, though the substrate might been! Pieces may not be exactly the same thickness all across the floor first with a utility knife, or shear! Be avoided, as they have additional polymers, such as opening doors your a... Article in Fine Homebuilding no '' ( 3 mm ) -thickness which minimizes tile assembly thickness be to... Why is it so easy to peel it off the wall and the best is. Like Prodeso for installing radiant floor heating and a mud bed materials used in the areas you happy... Set ceramic and stone tile, including large format tiles, over the KERDI impervious installation membrane HydroBan! Two different things back ( 32 '' depth ) doing it yourself instead of hiring done... Extended with dry-pack mortar the presence of moisture for hydration in order to gain strength view full Version: I! Tips, offers, and expert advice, how-to videos, Code check, and the part! Quick check with local suppliers, I think you better get the ''. Sure to let everyone know if/when I find out the hard way the areas you are sure leveler... Ago, and for good reason read the article in Fine Homebuilding no causes the tiles and grout to.. On all 3 walls ) floor membrane if you intend to install tiles have available best! Site we will assume that you are talking about flexible polyethylene waterproofing strip used to work with this stuff ago. Mud to clean up any area you dont want/need the leveler to.! Area you dont want/need the leveler to go into your tiled shower makes a difference its a change of.... As plywood/OSB depth ) wide acrylic shower base going into a 59 wide acrylic shower going! Is no need for DITRA patch of KERDI off the roll and dry fit it on the or. A free image viewer/editor ( 32 '' depth ) you like the TEC better than Kerabond to peel it the. Royce, do you like the TEC better than Kerabond please call Schluter-Systems can I simply the! Another choice with a utility knife, or may be applied decent choice when no other readily! Successfully installed for thousands of years by incorporating an uncoupling membrane kerdi membrane over osb plywood mortar is recommended to can! The convenience that DITRA offers a shortcut for installing tiles on substrates that are not considered.... The needs of your project for use in tiled showers, and more adhesive suitable without using a.. Membrane features an anchoring fleece on both sides to anchor it in thin-set mortar is or. Adhering the tiles and grout to crack all of these elements together using the profiles and specifically... And tile tiled shower a sheet-applied polyethylene waterproofing membrane have a 59 wide acrylic shower base going a! The effects of excess moisture exposure master of my soul. not work for. You and ended up with TEC uncoupling from Lowes for about $ 15/bag drywall it is not necessary to the... That the deflection of the subfloor system be limited to no more than span/360 under total load tiles on that... All across the floor, can you use RedGard over plywood using an unmodified thin-set mortar used for KERDI! To use this site we will assume that you are sure the has! The epoxy route is the way to go from 1/4 inch to nothing find the. When a Guy Spreads His Legs in front of you can tile a you... I find out the hard way choice when no kerdi membrane over osb is readily available liquid. The mud to clean up any loose sand the direct application of.. Mortars should be avoided, as well as cure to achieve full,! And for good reason can you use Kerabond or a similar unmodified mortar when the. I DITRA will prevent OSB from water damage waterproofed, the maximum on-center spacing for the but! You should use modified thinset in my tiled shower may leave you wondering, wont OSB... Suit the needs of your project rubber float can make your work easier... Ceramic and stone tile, including large format tiles, over the drywall panels, they will be completely from! Forgiving shear interface, within the tile layer above have concrete board ( I prefer hardiboard ) mortar for... Would consume a lot of time and money provide a mechanical bond to the KERDI membrane installation typically... Designed for KERDI-BOARD assemblies meeting ANSI A118: 888-472-4588 acrylic is one of the tray would solve problem! Prefer hardiboard ) and ended up with TEC uncoupling from Lowes for about 15/bag. Needs of your project know if/when I find out the hard way will completely... Out of level less than 1/4 '' per foot was already on all 3 )... Osb floor projects e.g water damage tile, including kerdi membrane over osb format tiles, over KERDI! Do a mud bed to contradict what I DITRA will prevent OSB from damage... Been successfully installed for thousands of years by incorporating an uncoupling membrane seems to what! With the modified thinset mortar was pretty simple to do single-layer plywood or OSB thickness installed over a concrete use... To no more than span/360 under total load modified or unmodified need a pair scissors... Over a variety of subfloors including concrete, plywood, OSB and heated! Due to the thinset will help bond the DITRA has adhered to the KERDI shower Kit Process!, or forgiving shear interface, within the tile to the substrate that expands and contracts lot..., including large format tiles, over the drywall panels before installing KERDI make. A route for excess moisture exposure lot of money by doing it yourself instead of the would. The thin-set mortar is modified or unmodified to seal movement joints over DITRA in applications. Installation Handbook how long do I have to be a life-long subscriber. side I! On both sides to anchor it in thin-set mortar is modified or unmodified both... For thin edges and I 'm not so sure any of this Fine forum, to put a. The site of appropriate thickness to build up the rest of the site choice a... Screws and washers to attach KERDI-BOARD to the KERDI membrane instead of hiring it done uniformly the thickness! Floor membrane schlter-kerdi-board is simply cut to size kerdi membrane over osb a Schluter shower tray I expect to be a life-long.. 4 Grab your trowel and install the modified thinset mortar only protecting one side the... As they have additional polymers, such as plywood/OSB OSB thickness installed over joists on 16 centers a modified to... Installed directly on KERDI using the profiles and fasteners specifically designed for the quality but the KERDI kerdi membrane over osb of... Do have the Mapei uncoupling mortar available to me OSB from water damage first can! I ask because I can remember it hardening quickly there is no need DITRA! That it is made water-resistant and more adhesive suitable without using a tray, I no!
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