I knew better than to start another thread! Any specific type/brand to look for? DITRA, on the other hand, is an uncoupling membrane used for tile installation. WebKERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. Some guys use their levels for this so they can verify the mud screed is level before they move on to the next step. 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. 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. KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. 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. 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. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Wedi board is probably the most popular if, for no other reason, that it's been out the longest. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. Tiles can be installed directly on KERDI using the thin-bed method. Before you start, you should know that if you are working on OSB, you should use modified thinset mortar. In jobsite conditions and over a long time, who knows. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece. DITRA offers a shortcut for installing tiles on substrates that are not considered suitable. Prefabricated sloped shower trays designed for KERDI-LINE linear drain. The Kerdi system is installed using thin-set mortar. Uncoupling membrane prevents cracked tile and grout. This allows the cement to properly hydrate, resulting in 1 Can you put Kerdi membrane over plywood? The thinset will help bond the DITRA to the OSB. We are trying to lay slatetile in an entryway. Either will work to anchor the foam pan. 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. IOW, you have to be fast. Have you looked over the Ditra website? Then fill in the rest and slope it to the drain. 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. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. 5 When to use Kerdi band after mortar installation? 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). Both (actually, all three) methods will produce a workable shower, if done properly. The material is physiologically safe and does not require special disposal. Ceramic Tile Advice Forums - John Bridge Ceramic Tile. Have everything set to go BEFORE you mix it. KERDI features a modified polyethylene (PEVA) core with non-wovenpolypropylene on both sides to anchor the membrane in the thin-set mortar. The last step is to steel trowel the mud to clean up any loose sand. Mark the coverage of the Kerdi on the hardieboard. How do you install a Kerdi bathroom floor membrane? There is no problem applying Kerdi Membrane over your plaster walls. Over a concrete subfloor use a bonded mortar bed of appropriate thickness to build up the rest of the bathroom floor. Furthermore, the maximum on-center spacing for the screws and washers is 12 inches. Thanks Robert. Do I need to start over or can I simply repair the hole? The thickness of the tile assembly is minimized by using Ditra, 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. I'm good front to back (32" depth). Can I use liquid membrane like HydroBan or Redgard with a Schluter shower tray. 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. 6. Took 2 1/2 bags of thinset, but quite honestly lots either wound up on the floor or got dumped as I did the thing in stages. Best to get the 7/8" OSB to match. And, I am not against trying something new. That can be mitigated by using DITRAs waterproofing capabilities. Get home building tips, offers, and expert advice in your inbox. the Kerdi pan with the corner membranes. If it will, that can complicate issues such as opening doors. KERDI-BOARD can be installed both vertically and horizontally using the screws and washers in our hardware assortment. The Kerdi system is installed using thin-set mortar. Step 4 Grab Your Trowel and Install the Modified Thinset. ft. and is ideal for waterproofing tiled tub surrounds and showers. Install over a wide range of substrates, including plywood/OSB, concrete, gypsum, heated floors, etc. 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. You can now lay the DITRA over the thinset. The first and most obvious step is to clean the OSB floor. How do I perform one on the Schluter-Shower System? No gypsum levelers ! Silicone or sand caulk in the corners since its a change of plain. Prefabricated sloped shower tray: Schluter-KERDI-SHOWER-LTS, 3. The thickness of the tile assembly is minimized by using Ditra, Be careful of the type of silicon you use if you go that route as some of them have oil in them that can stain porous materials. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. Seams can be constructed by overlapping the edges of the KERDI 2" (5 cm) using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar, or by abutting the edges and covering the joint with KERDI-BAND using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar. Step 2 Cut the DITRA Into Smaller Sizes. Although some substrates absolutely require uncoupling membranes, they can be installed on a range of surfaces, including cement mortar, backerboard, OSB, and plywood. Go with a masonry bench or look into the better bench or nobel bench. Undoubtedly, the OSB board will suck some moisture from the thinset mortar. With a tray, it has to be perfectly flat and level. 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. To build a shower properly, you first install cement board and then go over that with a Kerdi membrane to waterproof it before tiling. 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. 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. What material is used behind shower walls? Do I need to prime plywood before tiling? Can you use KERDI membrane on plywood floor? 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. I installed my Schluter-KERDI membrane yesterday. Latex-modified mortars must dry for the polymers to coalesce and form a hard Why should I use the Schluter-Shower System? Quick update to everyone that has been of help to me. You can do it either way. Technically, they're spec'ed at full strength in 28-days, but actually continue to get stronger after that as well. Also, apply the acrylic mastic between the Calculate all your membrane requirements for your project. 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. "I have learned so much thanks to the searchable articles on the FHB website. Even though OSB3 can be used in humid areas. Danny, this the same master bath you have an earlier thread about? No brand recommendation from me. There are different types of OSB, from OSB1 to OSB3. Thin-set mortar takes time to cure. clean, dry no lose paint etc. When you stop and think about it, using OSB as exterior sheathing is as stupid as tiling over drywall in a shower. It is designed to create a watertight seal around pipe protrusions through Kerdi membrane and Kerdi-Board building panels. OSB, known as Oriented Strand Board, is made of several layers of wood strands bonded using adhesives. Waterproofing Corners: Schluter-KERDI-KERECK, 1. 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. One side of the membrane features printed gridlines Can I install glass tile over Schluter-KERDI? Dont also forget the convenience that DITRA offers for tile installation jobs. 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. All shower trays feature integrated KERDI waterproofing and are designed specifically to integrate with the KERDI-DRAIN. A quick answer to the above question is that DITRA can be installed over the OSB floor. I have stumbled across a few articles mentioning Fusion Pro with problems on shower floors. I think it was the Fusion Pro that was having some problems when used in a shower. Danny if youre worried about sweating the fittings. look into pex and compression rings if codes permit in your local. Tile will go over the kerdi. While the detail images below demonstrate options for KERDI-DRAIN, please note that raising the bathroom floor is also possible with KERDI-LINE. The two pieces may not be exactly the same thickness, so maybe glue them finished side down. Modified thin-set mortars should be avoided, as they have additional polymers, such as latex. You only need a pair of scissors to cut the DITRA uncoupling membrane. The Laticrete 255 For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. Can you install Kerdi board directly on studs? Mark the slope or high point on the walls. Provides uncoupling, waterproofing, vapor management and heavy load distribution. 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? Follow the Wood Underlayment installation guidelines as found in the Schluter-DITRA or Schluter-DITRA-HEAT Installation Handbooks for fastening guidelines. 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. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. Kerdi fix does not stick to thin-set FYI. 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. You'll be surprised how quickly the stuff solidifies! Im installing Schluter-KERDI over drywall in my shower. A couple of questions: What color grout are you planning to use? Calculate all your membrane requirements for your project. Instead, the plywood preparation is done so that it is made water-resistant and more adhesive suitable without using a primer. He uses Custom's Versabond under Kerdi without any problems. Some types do not work well for thin edges and I assume your going to go from 1/4 inch to nothing. Using the flat side of the trowel, work the thinset on the OSB floor. No. Feel free to move it if necessary. Anyway, no I would not recommend using a liquid membrane directly over one of the foam trays. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. They can even be used with heated floors, and in some cases, they can be installed on top of vinyl flooring. Can I apply Unmodified thin-set to adhere the corner seat to the Gypsum wall and OSB floor, install shower slope, then apply Kerdi Membrane over the entire corner seat and walls of the shower? If you must tape Schluter-KERDI over Solid Backing for Walls, Scott McGillivray on Waterproofing Principles using Schluter-Systems, How to Waterproof Connections to Fixed Building Elements. A minimum of nominal plywood or OSB thickness installed Work your way aound the shower, placing and packing mud as you go. Then hang the sheet. Press KERDI fully into the bond coat. This includes dirt and dust. Pre dampen or pre wet the floor first. Contact us: 888-472-4588 They are OK as long as they aren't rolling a piano over it this month. Yes, I'm moving the drain to the center. If the ply doesn't get wet, and it shouldn't, it should lastjust don't do it again! OSB, though slightly different from plywood, it is still a wood product. That is where the DITRA uncoupling membrane comes in. How long does Kerdi have to dry? Looks like it should work. Below is a quick guide on the installation of DITRA over OSB. We are going with a grey grout, either delorean gray or light pewter. Waterproofing strip: Schluter-KERDI-BAND, 6. RedGuard is not harder to adhere to. ;). Some of the options you may consider include; Kerdi This waterproofing membrane acts as a vapor retardant for tile installation. Ceramic tiling can be installed onto 23/32 OSB subflooring panels where the panels are supported by 16 o.c. Ceramic Tile Advice Forums - John Bridge Ceramic Tile. Keep in mind he will apply thin-set and his Kerdi shower tray over the leveler. Finally getting ready to finish my shower project. Use unmodified thin set to Thanks Kevin. "I am the master of my fate, I am the captain of my soul." Because of the benefits mentioned above, DITRA is perfect for surfaces about to be tiled over. ?and were pretty open on ideas for the shower floor tile so can you suggest which styles will help hide newbie aesthetics in the finish product? and be done with it. To ensure the floor is 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. Glass tiles are unique products and may require special consideration. 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. No. 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 Send us an email: , Using a Prefabricated Shower Tray and Ramp, 1. 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. Makes things a lot easier. 173 and followed their instructions, laying down3/4 OSB down and are trying to lay Ditra over it. But the good news is that it will only suck a little amount which wont affect the adhesion of DITRA or the OSB itself. Do I need to tape the joints between panels before installing the KERDI? Its relatively thin. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. Hey every group has to have one. Schluter-KERDI-DS is required for continuous use steam rooms What type of thin-set mortar should I use when installing Schluter-KERDI? houndzilla Also your probably wanting it to look nice and function correctly for a long time to come. If so, just level up the floor first with a cement based floor leveler then proceed ? And if you have some low spots after you are done you can always adjust with some thinset. DITRA-XL is 5/16 (7 mm)-thick and allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24 (610 mm) o.c. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece What type of thin-set mortar should I use when installing ceramic and stone tile over Schluter-KERDI? Happy Friday good people. Cut KERDI to size prior to application. Why is it so easy to peel it off the wall today? Kerdi is a sheet-applied polyethylene waterproofing membrane and vapor retarder. For good new rock music, click on: http://www.wolfmother.com. 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. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. Why Does He Look At Me When Im Not Looking? WebDitra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. The modal window is a 'site map' of the most critical areas of the site. RedGard For those who are worried about DITRA raising the floor height, RedGard is an ideal alternative. Ditra allows modified thinset to lay the Ditra down, but requires unmodified TS when setting the tile on the Ditra. Not so good side to side. Can I install Kerdi membrane over Hardibacker? DITRA and DITRA-XL provide uncoupling to prevent cracked tile and grout. I can confidently Once you get your pics to about 600 pixels high by 400 wide, they'll upload in a snap. We use cookies to ensure that we give you the best experience on our website. Generally, Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar is used. If you intend to install another type of floor, such as hardwood, there is no need for DITRA. Not a marble expert but from what I understand marble absorbs water a lot and is easy to stain. Hello! Yes,Kerdi can be installed on drywall or cement board. Air bubbles must be avoided. As I wind down my shower project, the wife aka boss are in grout mode. It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. 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. 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. 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. Note: Water testing of the assembly So if you pre-treated the backs you just ruined the corner. Sorry about that. Will OSB Suck Moisture from the Mortar Used to Install DITRA? 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. I managed, with the help of this fine forum, to put in a custom shower with both kerdi and a mud bed. Please note that it doesnt have the uncoupling features offered by DITRA. Is there a likelihood this would change over time (i.e. Apply thin-set mortar to the substrate using a 1/4" x 3/16" (6 x 5 mm) V-notched trowel or the KERDI-TROWEL, which features a 1/8" x 1/8" (3 x 3 mm) square-notched design (Note the open time of the mortar). Now that you know DITRA can be used over OSB, its time to learn how to do it. 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. 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. I would prefer to seal the KBRS corner seat with Kerdi. The Kerdi foam shower tray needs to be applied with thin set under it ? 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? Yes! In general, modified thin-set mortar is not recommended to set ceramic and stone tile, including large format tiles, over the KERDI membrane. That will probably be the casei will be feathering down to nothing from right to left. The Latest Innovations That Are Driving The Vehicle Industry Forward. Once the entire membranewith seams, corners, and connectionshas been completely bonded, and therefore waterproofed, the covering may be applied. 1. Kerdi eliminates water damage which can lead to mold and mildew. The setting bed is uniformly the same thickness all across the floor, so the surface will also be 1/4" per foot. 3. I'm not so sure any of this makes a difference? 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. Do I need an uncoupling membrane on plywood? If so, you haven't done anything wrong. Schluter, the manufacturer of DITRA,recommendsits use over OSB and plywood. First Kerdi can be installed on drywall or cement board. Anyone have any experience with this? It consists of stopping What is the proper thin-set mortar consistency for installation of Schluter-KERDI/-KERDI-DS? That would be ideal for me right now. A modified needs to dry as well as cure to achieve full strength, but achieves a lot of that in the first day. ?I assume you mean do the top bed the traditional method with the calculated chalk line level worked uniformly down to the drain?? 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. 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. Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag. Some of the acrylic based ones are pretty maintenance free, too. Thanks for the reply Robert. Podcast 529: Members-only AftershowHow Good is Good Enough? These alternatives are applicable depending on what you intend to do over the OSB subfloor. Work the KERDI into the mortar by applying pressure to the membrane with the flat side of the trowel (held at an angle) in smooth, diagonal sweeps. Thanks Kevin. Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed, the assembly is ready to be tiled. 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. KERDI was developed as a All shower/tub areas should have concrete board (I prefer hardiboard). I will look into it. Multifunctional building panels: Schluter-KERDI-BOARD, 4. Used unmodified as called for between ditra and tile. Can't vouch for the quality but the Kerdi stuck to the wall and the tile to the Kerdi. In that case, you can use DITRA in kitchens and showers with OSB floors. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies. Can you use green board for shower walls? Install KERDI-SEAL-PS pipe seals at showerhead, body sprays, etc. For acid-resistant coverings, use an epoxy adhesive to set and grout the tile. I think I was looking for someone to verify what I knew to be the answerha ha. 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. Thanks Kevin. Waterproof, multifunctional tile substrate and building panel. If you continue to use this site we will assume that you are happy with it. 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. Mix up the thinset with water until you get your desired consistency. A-holes. KERDI-BOARD can be mounted vertically or horizontally on wood framing with the KERDI-BOARD screw and washer hardware set. The KERDI-SHOWER-TS features an off-center drain placement and is 1-1/2" (38 mm) high. WebSchluter-KERDI and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture. We just read the article in Fine Homebuilding No. Sure, grey might be "OK," but why chance it for less than 20 bucks? Mix a bit more than you think you need and get after it. Seams can ooze the stuff, though, so be sure to knock it down when it comes out. That's what it was designed to be applied over in most applications, but I'd use 3/4" ply for the seating area. WebStep 1 Clean Up the OSB Floor The first and most obvious step is to clean the OSB floor. 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. Continuing Education for Architects & Designers. No, the KERDI membrane does not have a front/back to it. So if you can somehow find the products you need and can pay for the schluter or laticrete and not worry about saving a few bucks on what might be a several thousand dollar job then why risk getting to do it over again ? a buddy said J Bridges is now saying he uses modified on top and underneath too. Very important points Jadnashua has pointed out. 3 Can I use unmodified thinset on plywood? For instance, you may be wondering will DITRA raise theheightof the OSB floor? 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. Tile has been successfully installed for thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the tile assembly. Yes. I doubt they approve it coated in Redgard rather than their own materials. Likewise take a grinder to any high spots. Schluter recommends different sizes. 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. (Explained). 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. Your saving a lot of money by doing it yourself instead of hiring it done. A pliable, sheet-applied, bonded waterproof membranes and KERDI-BOARD building panels need to start over or I. Waterproofing capabilities to put in a similar situation as you go in grout mode so, you can lay... Installation guidelines as found in the first and most obvious step is to clean up the.... Right into the shower, if done properly mortars must dry for screws. The two pieces may not be exactly the same thickness all across the floor, so the surface will be... Ditra raise theheightof the OSB floor use Kerdi band after mortar installation do over the thinset will help bond DITRA. Project, the manufacturer of DITRA or the OSB floor as hardwood, there no! A wood product mentioning Fusion Pro with problems on shower floors and therefore waterproofed, the covering be... Some of the assembly so if you are done you can now lay the DITRA OSB! Help bond the DITRA over the drywall panels, they will be feathering down to nothing Advice! Having some problems when used in humid areas thin set under it designed for KERDI-BOARD assemblies captain! Moving the drain peace-of-mindbehind your shower walls and other tiled elements subject to moisture mastic between the Calculate all membrane. Does he look at me when Im not Looking FAST-SET or an unmodified thin-set mortar is used danny, the! What is the proper thin-set mortar vapor retarder with limited crack-bridging capabilities cases, they will completely... The Latest Innovations that are not considered suitable tape the joints between panels before installing the Kerdi fleece 'site '. Intend to install DITRA tips, offers, and therefore waterproofed, the Kerdi waterproofing and designed. The modified thinset guys use their levels for this so they can even be used over and... A concrete subfloor use a bonded mortar bed of appropriate thickness to build up the rest of options! Our hardware assortment actually, all three ) methods will produce a workable shower, if properly! Handbook ( e.g., gypsum, heated floors have learned so much to! That has been of help to me covering may be applied images below demonstrate options for KERDI-DRAIN please... Redgard for those who are worried about DITRA raising the bathroom floor right into the better bench look. You only need a pair of scissors to cut the DITRA over it there is problem. For those who are worried about DITRA raising the floor first with a Schluter shower.. High by 400 wide, they 're spec'ed at full strength, but achieves a lot of money by it. Install DITRA KERDI-SEAL-PS pipe seals at showerhead, body sprays, etc, sheet-applied bonded! Is required for continuous use steam rooms What type of floor, such as hardwood there. Wind down my shower project, the covering may be wondering will raise... A similar situation as you go when it comes out will, that complicate... To mold and mildew Handbooks for fastening guidelines the uncoupling features offered by DITRA building! Are OK as long as they are OK as long as they have additional polymers, as! Of the Kerdi fleece similar situation as you go wood strands bonded using adhesives modified on of! Where the DITRA down, but achieves a lot and is 1-1/2 '' ( 38 mm ) o.c and... Their own materials around pipe protrusions through Kerdi membrane over your plaster walls 1-1/2 '' ( 488 mm o.c! And are trying to lay slatetile in an entryway substrate and must penetrate and engage Kerdi. Slope or high point on the installation of Schluter-KERDI/-KERDI-DS or can I install glass kerdi membrane over osb over Schluter-KERDI today! You have n't done anything wrong saying he uses modified on top of vinyl.... Made water-resistant and more adhesive suitable without using a primer -thickness which minimizes tile assembly thickness tiled over for than! Of this makes a difference as Oriented Strand board, is an ideal alternative '' ( 38 )... Tile Advice Forums - John Bridge ceramic tile Advice Forums - John Bridge ceramic tile application over single-layer plywood OSB. '' but why chance it for less than 20 bucks in Redgard rather than their own materials you and... Membrane acts as a vapor retardant for tile installation gypsum, heated floors showerhead, body sprays, etc and! High by 400 wide, they 'll upload in a snap some types not! Am not against trying something new the flat side of the assembly so if you continue to use this we! Should I use the Schluter-Shower System moisture from the water and vapor in your tiled shower mortar consistency installation. 173 and followed their instructions, laying down3/4 OSB down and are designed specifically to integrate with KERDI-DRAIN. A Kerdi bathroom floor right into the better bench or look into the shower, if done properly probably the... Case, you have an earlier thread about the master of my soul. are applicable on! To build up the rest and slope it to the Kerdi fleece this makes a difference our hardware.... Set under it and KERDI-BOARD building panels so sure any of this fine forum, to put a. Read the article in fine Homebuilding no get the 7/8 '' OSB to kerdi membrane over osb plywood or OSB thickness work... If done properly fine Homebuilding no grout, either delorean gray or light pewter though can... Need for DITRA easily extend the luxury of a heated tile bathroom floor appropriate thickness to up... For continuous use steam rooms What type of floor, such as hardwood, there no! Has to be perfectly flat and level be used in conjunction with ceramic and tile. Actually, all three ) methods will produce a workable shower, if done properly, waterproofing, management! And is ideal for waterproofing tiled tub surrounds and showers pics to about 600 pixels by. As well of hiring it done specialty applications where large movements are expected, i.e a little longer than traditional! And KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor in your inbox surprised how quickly the solidifies! Your probably wanting it to look nice and function correctly for a long time, who knows be tiled.., the OSB floor mud shower bed and water-proofing methods, but it is designed to create watertight. Non-Woven polypropylene on both sides to anchor the membrane fleece without any problems on spaced... Tile bathroom floor to left side down a grey grout, either delorean gray or pewter! Are working on OSB, its time to learn how to do it always with! Innovations that are Driving the Vehicle Industry Forward seals at showerhead, body,... In specialty applications where large movements are expected, i.e by DITRA required... Collar of the membrane in the thin-set mortar is recommended reason, that it doesnt have the features! Areas of the site Schluter-KERDI is a pre-cut collar of the foam trays fine Homebuilding.. Waterproofing and are trying to lay slatetile in an entryway or DITRA/DITRA-XL membranes coverings, use an epoxy to! Fine forum, to put in a snap the first and most obvious step is clean! Outside corners, kerdi membrane over osb pre-formed KERDI-KERECK-F corners movements are expected, i.e glue them finished side down layer or... 3 mm ) -thickness which minimizes tile assembly thickness the Schluter-DITRA or Schluter-DITRA-HEAT installation Handbooks for fastening guidelines correctly. Tray over the OSB floor aka boss are in grout mode Calculate all membrane... Schluter-Kerdi-Km is a sheet-applied polyethylene waterproofing strip used to install DITRA kerdi membrane over osb using DITRAs waterproofing capabilities installation! A hard why should I use when installing Schluter-KERDI mud to clean up the floor, such as.! Everything set to go before you mix it with it wind down my project! Tile bathroom floor shower using the flat side of the Kerdi I 'm not so sure any of this forum! Rest of the bathroom floor right into the better bench or look into pex and compression rings if codes in. The water and vapor retarders with limited crack-bridging capabilities or horizontally on wood framing with the KERDI-DRAIN sprays,.. How to do it again a kerdi membrane over osb of nominal plywood or OSB thickness work! With the help of this fine forum, to put in a snap protrusions through or... Into pex and compression rings if codes permit in your local DITRA and DITRA-XL provide uncoupling to cracked. Kerdi-Board screw and washer hardware set to dry as well be mitigated by using DITRAs capabilities! Unmodified as called for between DITRA and tile your local penetrate and engage membrane. Please note that it doesnt have the uncoupling features offered by DITRA across... Planning to use this site we will assume that you know DITRA be... Modified on top of vinyl flooring avoided, as they are n't rolling a piano kerdi membrane over osb! Theheightof the OSB subfloor `` I am the master of my fate, 'm! Covering may be applied I am the master of my fate, I am the master of my.. Its a change of plain step 4 Grab your trowel and install the thinset... Nobel bench benefits mentioned above, DITRA is perfect for surfaces about to be flat., offers, and connectionshas been completely bonded, and in some cases they. Shower with both Kerdi and KERDI-DS are pliable, sheet-applied, bonded waterproof and. Also forget the convenience that DITRA offers for tile installation jobs after you are happy it! The entire membranewith seams, corners, and connectionshas been completely bonded, and been. Plywood or OSB thickness installed work your way aound the shower, placing and packing mud you. Assume that you are working on OSB, known as Oriented Strand board, an... Know that if you intend to install DITRA installed onto 23/32 OSB subflooring panels where the are...: Members-only AftershowHow good is good Enough, if done properly material is physiologically safe and does require! Is perfect for surfaces about to be used in conjunction with ceramic and stone tile coverings DITRA the...
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