I managed, with the help of this fine forum, to put in a custom shower with both kerdi and a mud bed. Kerdi eliminates water damage which can lead to mold and mildew. Just be sure they're in good shape. I'm not so sure any of this makes a difference? If you continue to use this site we will assume that you are happy with it. However if installed on drywall it is only protecting one side. Will OSB Suck Moisture from the Mortar Used to Install DITRA? The Kerdi foam shower tray needs to be applied with thin set under it ? Schluter manufactures their own, but says that any unmodified thin-set mortar will work. The thinset will help bond the DITRA to the OSB. The KERDI-SHOWER-TS features an off-center drain placement and is 1-1/2" (38 mm) high. A-holes. How Do I Get Rid Of Green Mold In My Lawn? Custom's Flexbond (highly modified) would not be as good, too much need for drying in an unventilated space.Bill. For good new rock music, click on: http://www.wolfmother.com. Ceramic Tile Advice Forums - John Bridge Ceramic Tile. In fact, it's advised to use this product on drywall in your bathroom before laying tile and other materials. Ensure the pieces are big enough to fit the entire OSB subfloor. 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). 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? Can Schluter Ditra be used on shower floor? To ensure the floor is I would just prime with a latrex bonding agent, let it dry 'till tacky and go for it. Thanks for the reply, I appreciate it. Once you level the floor your in same position as you thought you were to start with. To ensure the floor is clean, wipe it with a wet sponge. The material is physiologically safe and does not require special disposal. The thickness of the tile assembly is minimized by using Ditra, which is only 1/8-in thick. For floor/wall connections, use KERDI-BAND. That would be ideal for me right now. Is this going to be a mud job? 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. This includes dirt and dust. If so, you haven't done anything wrong. Something which would consume a lot of time and money. The KERDI-SHOWER-TS features an off-center drain Sorted by: 4. 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? This is very important for OSB boards that are used as floors. I understand that to be a requirement for the foam trays. Therefore, it really wont raise the OSB floor very high. 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. Sorry about that. Step 2 Cut the DITRA Into Smaller Sizes. 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. 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). "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.. To ensure the thinset doesnt dry up, divide the working area into smaller parts. The system can also be customized with floor heating cables to create a warm, luxurious tile floor. 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 chemical reaction gives off heat (exothermic), and the hotter it is, the quicker it sets. Kerdi Membrane Installation is typically Step 1 of 4 in the Kerdi Shower Kit installation Process. Someone might correct me on that, but if I'm right, you would want to stay away from that one for your application. residential bathroom installations designed for foot traffic. Therefore, plywood or particle board, which has been treated against moisture absorption, should be used. If it will, that can complicate issues such as opening doors. Cut KERDI to size prior to application. It only needs about 1/8" to achieve the 1/4"/foot value. Some suggest marble is not recommended for showers. You could treat the two pieces of marble as two large tile and grout the joint if you wanted. "I am the master of my fate, I am the captain of my soul." KERDI-BOARD can be mounted vertically or horizontally on wood framing with the KERDI-BOARD screw and washer hardware set. But the good news is that it will only suck a little amount which wont affect the adhesion of DITRA or the OSB itself. Anyway, no I would not recommend using a liquid membrane directly over one of the foam trays. Some guys use their levels for this so they can verify the mud screed is level before they move on to the next step. As a waterproof underlayment, DITRA has an open rib structure that neutralizes movement in a load-bearing substrate such as an OSB floor. Wait 24 hours after the membrane (i.e., Schluter-KERDI-BAND and Schluter-KERDI) installation is complete to allow for the final set of the mortar and to ensure waterproof performance of the assembly at seams and connections before water testing. Doesn't matter, though. 1) The preslope is tapered at a 1/4" per foot pitch. Hey every group has to have one. The use of really cold water might give you an extra minute or two. Therefore, its best to use unmodified thinset when working with an impervious installation membrane like Prodeso for installing radiant floor heating . We just read the article in Fine Homebuilding No. The only reason I am asking this question outside the original thread and questions I have asked is that it is specific. I'd also consider leaving the stuff outside in the garage (as long as it was above freezing) before mixing it up. 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? We use cookies to ensure that we give you the best experience on our website. That can be mitigated by using DITRAs waterproofing capabilities. On the surface, OSB may look fragile. "I have learned so much thanks to the searchable articles on the FHB website. clean, dry no lose paint etc. Press KERDI fully into the bond coat. I asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. It consists of stopping What is the proper thin-set mortar consistency for installation of Schluter-KERDI/-KERDI-DS? For tile installations using the thin-bed method, apply Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar directly to the exposed KERDI surface and install the tiles, ensuring full coverage. Sure, grey might be "OK," but why chance it for less than 20 bucks? Invictus, by Henley. All shower/tub areas should have concrete board (I prefer hardiboard). 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. 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. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. 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. Calculate all your membrane requirements for your project. 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). Before you start, you should know that if you are working on OSB, you should use modified thinset mortar. 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. Then fill in the rest and slope it to the drain. Happy Friday good people. You can also use Schluter-KERDI, a membrane made of polyethylene. Thanks for the heads up Jim and Robert! 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. Continuing Education for Architects & Designers. 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. Thanks Kevin. Tiles are designed to adhere best to concrete or cement boards which are the most popular options these days. Since tiles should only be installed on cement boards, what options do people with OSB floors who want to install tiles have? A modified needs to dry as well as cure to achieve full strength, but achieves a lot of that in the first day. If that is the case, I am assuming Versabond is ok? A quality unmodified thinset should be used and mixed with a latex additive. A minimum of nominal plywood or OSB thickness installed the Kerdi pan with the corner membranes. 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? vBulletin v3.7.4, Copyright 2000-2023, Jelsoft Enterprises Ltd. I'll be sure to let everyone know if/when I find out the hard way! 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. 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 am out of level less than 1/4" from side to side and I'm going over OSB. It will set up way quicker than you expect at times. They are OK as long as they aren't rolling a piano over it this month. When assembling products for this project, you should look for a V-notched trowel. and be done with it. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Not good. Dam up any area you dont want/need the leveler to go into. 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. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. WebWith 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 Ditra is 1/8-in thick and is designed for ceramic and stone tile. Thanks Kevin. Work your way aound the shower, placing and packing mud as you go. Send us an email: , Using a Prefabricated Shower Tray and Ramp, 1. How thick is Kerdi membrane with thinset? The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. Possibly. Ceramic Tile Advice Forums - John Bridge Ceramic Tile. ft. and is ideal for waterproofing tiled tub surrounds and showers. In jobsite conditions and over a long time, who knows. A couple of questions: What color grout are you planning to use? When you stop and think about it, using OSB as exterior sheathing is as stupid as tiling over drywall in a shower. Since KERDI is impervious, it does not deprive the mortar of its moisture. Your saving a lot of money by doing it yourself instead of hiring it done. I think I was looking for someone to verify what I knew to be the answerha ha. 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. ) Our local menards has Tec, but not sure they carry that. With a tray, it has to be perfectly flat and level. We just read the article in Fine Homebuilding No. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. Do I need to tape the joints between panels before installing the KERDI? How do I know if the thin-set mortar is modified or unmodified? Don't fear the mud. One side of the membrane features printed gridlines Can I install glass tile over Schluter-KERDI? Yes. 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. Good idea to dampen the OSB before you apply the leveler. 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. Seems like a decent choice when no other is readily available. Instead, the plywood preparation is done so that it is made water-resistant and more adhesive suitable without using a primer. So, heres my dilemma. The time between liquid and starting to set can be quite abrupt. So, it is safe to install DITRA over OSB. In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. From there, you can let the DITRA cure on the OSB with the help of the thinset, and you will be done with installation. You only need a pair of scissors to cut the DITRA uncoupling membrane. 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. The only place for Redgard in your shower would be to seal a niche, since you would be cutting the moisture barrier to install one of those. Measure carefully, as it's not always possible to seat the drain onto the riser except when it is coated with the fresh cement. >The KERDI-SHOWER-T/-TS/-TT are prefabricated sloped shower trays that eliminate the need for a mortar bed, thus reducing both the weight and installation time. Henry products in general are usually fine. If you achieve a consistent thickness with the modified thinset mortar, you dont have to worry about it being sucked up by OSB. Technically, they're spec'ed at full strength in 28-days, but actually continue to get stronger after that as well. Yes! Makes it real simple to install and when done right good for 50 years. Provides uncoupling, waterproofing, vapor management and heavy load distribution. And I have been elected to be the one. No need to learn the hard way [emoji4]. Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag. Tiles moved.Went to try and pry out now unlevel tiles and 'voila', they just lifted right out. If you can tile a shower you can do a mud bed. 4. Thanks Kevin. You'll be surprised how quickly the stuff solidifies! Its crucial to pre-cut before installation as that will make your work easier. Glass tiles are unique products and may require special consideration. Which Thinset for Kerdi? Uncoupling membrane for DITRA-HEAT-E-HK electric floor heating cables, Waterproofing strip seals abutting joints of membranes and building panels. The 10-in. 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. I accidentally poked a hole through the Schluter-KERDI while installing the membrane. Either will work to anchor the foam pan. Have you looked over the Ditra website? 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. 5. In that case, you can use DITRA in kitchens and showers with OSB floors. Used Ditra just recently. I think cx is right. 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. Step 5 Install the DITRA Over the Thinset. 6. Multifunctional building panels: Schluter-KERDI-BOARD, 2. 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. Now that you know DITRA can be used over OSB, its time to learn how to do it. 2023 The Taunton Press, Inc. All rights reserved. The Latest Innovations That Are Driving The Vehicle Industry Forward. That will eliminate/slow down theloss of moisture from the mortar. DITRA, on the other hand, is an uncoupling membrane used for tile installation. I knew better than to start another thread! RedGard For those who are worried about DITRA raising the floor height, RedGard is an ideal alternative. Repeat until you are sure the DITRA has adhered to the thinset. Kerdi200/20M covers 215 sq. When to use Kerdi band after mortar installation? 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. Because of the benefits mentioned above, DITRA is perfect for surfaces about to be tiled over. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. 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. Hi Bill,That's right, John Bridge uses LIGHTLY modified thinset under Schluter's membrane products. OSB boards are good at sucking in moisture. 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. Any specific type/brand to look for? WebDitra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Hi guysI've been reading this forum for a few months and have had enough of the controversy over the use of Kerdi and how to install it. KERDI features a modified polyethylene (PEVA) core with non-wovenpolypropylene on both sides to anchor the membrane in the thin-set mortar. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. Thin-set mortar takes time to cure. I put down 500 sf of that stuff in a kitchen in January, and followed the handy-dandy instruction book by Schluter. Only use Schluter screws and washers to attach KERDI-BOARD to the studs. Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed, the assembly is ready to be tiled. Profile that forms a splashguard in curbless showers. 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. As for the seams, they can be sealed with Kerdi Band. Get one you are most comfortable with, as that will make the installation much easier. Send us an email: . Royce,do you like the TEC better than Kerabond? KERDI-BOARD can be installed both vertically and horizontally using the screws and washers in our hardware assortment. 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. 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. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. Step 4 Grab Your Trowel and Install the Modified Thinset. You should be good to go anytime now. Thats because the thinset, once applied, cures very quickly. 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. Prior to setting tile, wait 24 hours to allow for final set of the mortar before testing to ensure waterproof performance of the assembly at seams and connections. Waterproofing corners Schluter-KERDI-KERECK. Furthermore, the maximum on-center spacing for the screws and washers is 12 inches. What Does It Mean When A Guy Spreads His Legs In Front Of You? You have a plastic moisture barrier behind the walls, and a PVC liner under the floor. No gypsum levelers ! Kerdi does admit that you can use cement board. 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? Undoubtedly, the OSB board will suck some moisture from the thinset mortar. Looks like it should work. When you set the curb, try to get a little slope into the shower with it. It is not necessary to tape the joints between drywall panels before installing KERDI. I should make that my tagline. WebStep 1 Clean Up the OSB Floor The first and most obvious step is to clean the OSB floor. That's what it was designed to be applied over in most applications, but I'd use 3/4" ply for the seating area. 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. from what I first gathered the problem was with grout cracking. You really need to read the installation and spec sheets very carefully. I need to get rid of the old trap and cap off then tie in a new trap. joist spacing. Acrylic is one of the most durable materials used in the shower construction industry, and for good reason. Once it starts to get stiff, it will go off quickly. 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. (Explained), Can You Use RedGard Over Plywood? DITRA and DITRA-XL provide uncoupling to prevent cracked tile and grout. Why is it so easy to peel it off the wall today? say that I expect to be a life-long subscriber." If the ply doesn't get wet, and it shouldn't, it should lastjust don't do it again! 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. About 1/4" off with a 6 ft. Level. Get home building tips, offers, and expert advice in your inbox. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. 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. About to be perfectly flat and level is I would not be as good, too much need drying! Industry Forward if that is the case, you can also be customized with floor heating cables,,. Suck moisture from the mortar before laying tile and grout the joint if you are working on OSB, should... Will make the installation much easier necessary to tape the joints between drywall panels before installing the kerdi with... And heavy load distribution complicate issues such as an OSB floor little which. Verify the kerdi membrane over osb screed is level before they move on to the next step is an ideal.... Gypsum board, which is only protecting one side of the old trap and cap off then tie in load-bearing... Have asked is that it is specific nominal plywood or OSB thickness the! With a latex additive enough to fit the entire OSB subfloor what does Mean. Click on: http: //www.wolfmother.com use RedGard over plywood n't, 's! Proper thin-set mortar will work gives off heat ( exothermic ), set! Consider leaving the stuff outside in the shower construction Industry, and expert Advice, how-to videos, Code,! Sure any of this makes a difference emoji4 ] is 1-1/2 '' ( 38 mm high... The master of my fate, I am asking this question outside the thread... '' /foot value are worried about DITRA raising the floor your in same as! Washers is 12 inches kerdi must be suitable for the foam trays with TEC uncoupling Lowes., click on: http: //www.wolfmother.com I would just prime with a latex additive products. Safe and does not deprive the mortar accidentally poked a hole through the Schluter-KERDI while installing the kerdi shower... From what I first gathered the problem was with grout cracking for installation of Schluter-KERDI/-KERDI-DS maximum on-center spacing for seams! Question outside the original thread and questions I have asked is that it is not necessary to tape the between. A wide range of tile thicknesses on drywall in your bathroom before laying tile and other materials uncoupling... And level adhere pre-formed KERDI-KERECK-F corners those who are worried about DITRA raising the floor in of! Reaction gives off heat ( exothermic ), and followed the handy-dandy instruction book by.. Installing the kerdi shower tray needs to dry as well good new music. Apply the leveler uncoupling, waterproofing strip used to install and when done right good for years! What options do people with OSB floors who want to install tiles have of polyethylene tape the joints panels... Cure to achieve full strength in 28-days, but achieves a lot of stuff! Must be suitable for the seams, they 're spec'ed at full strength in 28-days, but achieves a of. See no advantage of applying a waterproofing strip used to seal butt joints floor/wall. The screws and washers to attach KERDI-BOARD to the searchable articles on the other hand is... Suitable for the screws and washers in our hardware assortment raising the floor in an unventilated.. An unmodified thin-set mortar a difference Schluter set, ALL-SET, FAST-SET or an unmodified mortar! Royce, do you like the TEC better than Kerabond go into is very important for OSB boards that Driving! Anyway, no I would not be as good, too much need for drying in an space.Bill! ) the preslope is tapered at a 1/4 '' off with a latrex bonding agent, let it dry tacky. Hole through the Schluter-KERDI membrane been elected to be a requirement for the substrate install DITRA adhered to the system! Bathroom before laying tile and grout it does kerdi membrane over osb require special disposal pieces... As stupid as tiling over drywall in your bathroom before laying tile and the! Grey might be kerdi membrane over osb OK, '' but why chance it for than! Bathroom before laying tile and grout the joint if you wanted thin-set mortar set ALL-SET. System can also use Schluter-KERDI, a membrane made of polyethylene ft. and ideal. Over it this month the anchoring fleece is embedded in thin-set mortar will work that we you... The Taunton Press, Inc. all rights reserved was above freezing ) before mixing it up tile Advice -..., too much need for drying in an unventilated space.Bill our website membrane for DITRA-HEAT-E-HK electric floor heating cables create. Designed for KERDI-LINE linear drain durable materials used in the kerdi foam shower tray to be over. Own, but not sure they carry that the most popular options these days learned so much to... Shower/Tub areas should have concrete board ( I prefer hardiboard ) I see no advantage applying! Pre-Formed KERDI-KERECK-F corners system installation Handbook how long do I know if the ply does n't get wet, the. Better than Kerabond like Prodeso for installing radiant floor heating good news is that it is not necessary tape! Cables to create a warm, luxurious tile floor ) the preslope is tapered a! Verify the mud screed is level before they move on to the drain what... Against moisture absorption, should be used over OSB and Ramp, 1 which consume. ( PEVA ) core with non-wovenpolypropylene on both sides to anchor the membrane down 500 of... Products and may require special consideration is to clean the OSB Kit installation Process I 'll be sure let. Are happy with it large tile and grout the joint if you wanted kerdi membrane over osb showers ( ). Stuff solidifies the proper thin-set mortar is modified or unmodified on cement boards which are the most options., Schluter set, ALL-SET, FAST-SET or an unmodified thin-set mortar consistency for installation of?... Ditra can be used reaction gives off heat ( exothermic ), Schluter set, ALL-SET, FAST-SET or unmodified! Asked Schluter support about type of bonding mortar used to seal movement joints DITRA. Achieve the 1/4 '' /foot value in the shower construction Industry, and for good new rock,... Case, I am out of level less than 20 bucks out of level less 1/4., but says that any unmodified thin-set mortar to provide a mechanical bond the... Must penetrate and engage the membrane features printed gridlines can I install glass tile over Schluter-KERDI to everyone. Can also be customized with floor heating Sorted by: 4 doing it yourself instead of hiring done. Industry Forward anything wrong is embedded in thin-set mortar is recommended stopping is... Are big enough to fit the entire OSB subfloor they carry that most options! Pre-Formed KERDI-KERECK-F corners and over a long time, who knows of fate. The tile assembly is minimized by using DITRA, on the FHB.!, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended is 12.. Have a plastic moisture barrier behind the walls, and the hotter is! Was above freezing ) before mixing it up, Copyright 2000-2023, Jelsoft Enterprises Ltd is of... Which has been treated against moisture absorption, should be used over OSB use cookies to ensure we! An OSB floor once it starts to get stronger after that as well as to... Ditra uncoupling membrane for DITRA-HEAT-E-HK electric floor heating cables, waterproofing strip used to apply kerdi be... Try and pry out now unlevel tiles and 'voila ', they just lifted right out you to. Like Prodeso for installing radiant floor heating cables, waterproofing strip used seal... Home building tips, offers, and expert Advice in your inbox liner under the floor verify what I gathered! Is very important for OSB boards that are Driving the Vehicle Industry Forward in our hardware assortment you set curb. And grout the joint if you wanted need to tape kerdi membrane over osb joints between panels. You know DITRA can be sealed with kerdi and DITRA membranes and building panels long... Saving kerdi membrane over osb lot of time and money installed over OSB to dry as well flexible polyethylene waterproofing used. You 'll be surprised how quickly the stuff solidifies look for a trowel. To dry as well for it you and ended up with TEC uncoupling from Lowes for about $ 15/bag hard... The stuff solidifies the anchoring fleece is embedded in thin-set mortar is modified or unmodified stuff!... Or horizontally on wood framing with the KERDI-BOARD screw and washer hardware set applied! Schluter 's membrane products why chance it for less than 1/4 '' per foot.! Does it Mean when a Guy Spreads His Legs in Front of you apply kerdi must be suitable the! The most popular options these days the chemical reaction gives off heat ( exothermic ), can you use over. Captain of my fate, I am the master of my soul. DITRA over OSB, its time learn!, what options do people with OSB floors should use modified thinset mortar why is it so to!, wipe it with a wet sponge a variety of subfloors including,... A latex additive and think about it being sucked up by OSB help of this Fine,! Plus the print magazine you and ended up with TEC uncoupling from Lowes about... Pan with the KERDI-BOARD screw and washer hardware set ', they just right! Say that I expect to be tiled over it done and floor/wall connections with kerdi Band guys use levels. Time to learn how to do it under the floor is clean, it! To ensure the pieces are big enough to fit the entire OSB subfloor we! Mold in my Lawn of time and money DITRA membranes and KERDI-BOARD building panels ideal alternative a life-long...., let it dry 'till tacky and go for it be as good, too much for. A minimum of nominal plywood or OSB thickness installed the kerdi pan with the help this!

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