I am nearing completion of my tile shower project. DITRA and DITRA-XL membranes do not require any special maintenance. Large Gap. Your email address will not be published. Once this is done, continue the installation by following the directions for the particular Kerdi product being used. Web623K views 9 years ago The KERDI-BOARD waterproof building panel combines substrate and waterproofing installation into one. I'm of the opinion now that I'll use what's best for the stick with the subfloor. I have stumbled across a few articles mentioning Fusion Pro with problems on shower floors. The system can also be customized with floor heating cables to create a warm, luxurious tile floor. The minimum required tile format for use with DITRA is 2" x 2" (50 mm x 50 mm). Solidly embed the matting into the mortar using a float, screed trowel, or DITRA-ROLLER*, making sure to observe the open time of the bonding mortar. You really need to read the installation and spec sheets very carefully. A-holes. Its essential to protect surrounding wall and floor surfaces from water or moisture damage that can occur in these areas. Proper installation results in full contact between the fleece webbing and the thin-set mortar. 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. While cement backer boards are moisture-resistant, they are not waterproof. Keep in mind all of the work your doing. A couple of questions: What color grout are you planning to use? if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'remodelormove_com-narrow-sky-1','ezslot_28',165,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-narrow-sky-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'remodelormove_com-narrow-sky-1','ezslot_29',165,'0','1'])};__ez_fad_position('div-gpt-ad-remodelormove_com-narrow-sky-1-0_1');.narrow-sky-1-multi-165{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:15px!important;margin-left:auto!important;margin-right:auto!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}Once the seams are sealed, lay down a waterproof coating to the floor and walls of the shower space. When it comes to selecting thinset for cement board, there are a few important factors to consider. I'll be sure to let everyone know if/when I find out the hard way! Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag. Kerdi eliminates water damage which can lead to mold and mildew. DITRA is not intended to be barrier sound control system. Various products can be used to waterproof shower walls such as water-resistant drywall and cement backer boards. I used to work with this stuff years ago, and I can remember it hardening quickly. Happy Friday good people. What they allow and what they recommend are two different things. The main types of cement board you could encounter are Fibre Reinforced Cement (FRC) board and gypsum board. KERDI is ideal for use in tiled showers, bathtub How much thin-set mortar will be used with Schluter-DITRA or Schluter-DITRA-XL? Yes. If full coverage is not achieved, remove and reapply, making sure to verify proper mortar consistency and application. Because of the simplicity of the Schluter Kerdi Shower Kit System, it has become a popular shower waterproofing system for many homeowners. To install Kerdi Membrane, start by applying Schulter ALL-SET mortar (or similar) to your cement board substrate using a 1/4 x 3/16 V-Notch Trowel. Movement joints are essential in any tile installation to prevent Can I install glass tile over Schluter-DITRA? When framing a KERDI-BOARD-SN shower niche you will need to use the 90 DITRA is not intended to be barrier sound control system. 7 years ago. Yes. Welcome to John Bridge / Tile Your World, the friendliest DIY Forum on the Internet Find the website that's made specifically for you. Contact us: 888-472-4588 We just read the article in Fine Homebuilding No. KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. Using a thin-set mortar that is suitable for the substrate, apply the thin-set mortar (mixed to a fairly fluid consistency, but still able to hold a notch) Once DITRA has been installed on the substrate, tile can be installed right away. 2) cut membrane enough to put a pre-fab preslop underneath and then add a new membrane. 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. For complete installation guidelines and warranty criteria please refer to the downloadable Schluter-DITRA Installation Handbook and view the step-by-step installation videos available below. Thanks Kevin. 4. Uncoupling It could take longer if the space is particularly wet or humid. "I am the master of my fate, I am the captain of my soul." We don't recommend or warranty DITRA or DITRA-XL installation over existing hardwood flooring as it is very unstable and difficult to bond Can I use self-leveling compounds over Schluter-DITRA or Schluter-DITRA-XL? Loads are transferred from the tile covering through these column-like mortar structures to the substrate. OSB boards are good at sucking in moisture. To bond the tile to the DITRA-XL, using a 1/4" x 3/8" (6 mm x 10 mm) square- or U-notched trowel: Use one 50 lb (22.68 kg) bag of mortar per 35 - 45 ft2(3.3 - 4.2 m2). The two pieces may not be exactly the same thickness, so maybe glue them finished side down. I tried to snap chalk lines on Schluter-DITRA before setting my tile, but the chalk rubs off the plastic easily while I am working. It contains the components needed to create a waterproof and vapor tight bathtub surround assembly. If the mortar skins over prior to matting installation, remove and reapply. I'm not so sure any of this makes a difference? If your floor needs to be reinforced, reinforce the joists by sistering them and adding blocking, then top that with 3/4" plywood. 3. This is necessary to ensure that the membrane will adhere properly to the drywall. Over that, 15lb roofing felt, then shower pan lining or other waterproof membrane and finally 1/2" Hardibacker to set tile. Firstly, it is important to ensure the wall is adequately prepared and that it is smooth, flat and free of defects. The cement board can also become weakened and start to flake away when it absorbs moisture, causing ugly spots and patches to start appearing on the wall. I'd also consider leaving the stuff outside in the garage (as long as it was above freezing) before mixing it up. Yes, I'm moving the drain to the center. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. I will give it a shot. 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. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. Yes, the KERDI-SHOWER-SB shower bench can be trimmed to the desired width using a utility knife Dry-set mortar is comprised mostly of cement, sand, and a water retention agent, and is also called unmodified We havent changed our position on thin-set mortar use within our systems. 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. 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 ? Simply abut end and side sections of adjacent sheets. Fill the cut-back cavities with Schluter SET, Schluter ALL-SET, Schluter FAST-SET, or unmodified thin-set mortar and comb additional mortar over the matting using a trowel that is appropriate for the size of the tile. Most of the others can only be applied to a feather edge over concrete or a suitable backer boardi.e., not over a subfloor. Can you put Schluter over plywood? Silicone or sand caulk in the corners since its a change of plain. Todays construction methods, which include the use of lightweight We don't recommend or warranty DITRA or DITRA-XL installation over existing hardwood flooring as it is very unstable and difficult to bond DITRA and DITRA-XL were designed and tested for thin-bed ceramic tile and natural stone applications We recommend Schluter SET , ALL-SET , FAST-SET, or unmodified thin-set mortar on a floor that has been leveled with a self-leveling product. The estimated thin-set mortar coverage for each membrane is shown below. WebOnce you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. The Kerdi membrane should be applied with the standard procedure, using a hogg brush or a notched trowel to spread the thin-set mortar and a roller to ensure appropriate adhesion. Schluter-Systems does not recommend the use of premixed thin-set mortars (mastics/adhesives) in any DITRA installation. The main issue caused by non-waterproof cement boards is the eventual warping and damage to the tiles, making it difficult and costly to fix without removing all the tile and starting over. 2023 The Taunton Press, Inc. All rights reserved. The time between liquid and starting to set can be quite abrupt. This will ensure that the coating sticks to the cement board. ft. and is ideal for waterproofing tiled tub surrounds and showers. Sure, grey might be "OK," but why chance it for less than 20 bucks? Then build your preslope. One option is to apply hair spray over the chalk lines. :tup2: Damn, you guys certainly keep a man honest :neesie: They sell some 10lb. Cement boards are typically capable of withstanding larger amounts of water, while a Schlter system is designed to hold up well only in dry conditions. For DITRA use a 1/4" x 3/16" (6 mm x 5 mm) V-notched trowel, 5/16" x 5/16" What is the proper thin-set mortar consistency for installing Schluter-DITRA and Schluter-DITRA-XL? Uncoupling membrane for DITRA-HEAT-E-HK electric floor heating cables, Waterproofing strip seals abutting joints of membranes and building panels. Allow the primer to dry completely before proceeding with the KERDI installation.
Use DITRA for ceramic tile installations over single layer plywood or OSB subfloors on joists spaced up to 19.2" o.c. I am finally ready to tackle our This site is protected by reCAPTCHA and the Google. Using modified thinset on KERDI can be tricky and in some cases, it can cause issues. I am considering #2 and at the curb, leaving the membrane at the curb but not sure how to seal the Kerdi membrane( to the board? 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. On the walls, 1/2" Kerdi Board can go right over the studs. DITRA-HEAT features a thickness of 1/4" (5.5 mm) and is especially designed to allow for the easy installation of DITRA-HEAT-E-HK heating cables. No, the KERDI membrane does not have a front/back to it. It installs with screws, then you tape the joints & screw holes and install your tile. Overall, putting Kerdi over regular drywall can be done, with the proper steps in place to properly install the membrane and its components. Additionally, all thin-set mortars should be suitable for use in wet or feature depths of up to 1/8 inch. Quite a few people on this site have used versabond. By: Author Olin Wade (Remodel or Move Stuff). Yes, you need waterproofing behind shower tile. For showers and bathtub surrounds, KERDI must be carried to the height of the showerhead at minimum A 1/4" x 3/16" (6 mm x 5 mm) V-notched trowel or the Schluter-KERDI-TROWEL is recommended.. Prefabricated shower tray: Schluter-KERDI-SHOWER-T/-TS/-TT, 3. >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. When applying the primer, make sure to cover all surfaces thoroughly, as these will be completely covered by the KERDI membrane. KERDI is suitable for use in intermittent use steam showers. Thanks for the heads up Jim and Robert! Continuing Education for Architects & Designers. I am out of level less than 1/4" from side to side and I'm going over OSB. WebWith the flat side of the trowel, firmly press the KERDI-BAND into the mortar. 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. I need to remove and reinstall a tile on Schluter-DITRA. Learn more about the essentials of waterproofing. Additionally, the use of modified thinset with KERDI could lead to cracks and other issues down the line as the modified thinset can shrink and pull away from the KERDI membrane over time. Using a thin-set mortar that is suitable for the substrate, apply the thin-set mortar (mixed to a fairly fluid consistency, but still able to hold a notch). " DITRA-XL allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 24" (610 mm) o.c. When doing so, it is important to ensure that the drywall surface is clean and free of dust, grease, and loose paint. In a perfect job, it will waterproof. I know that the Ditra instructions recommend UNMODIFIED for use under their produc, with good reason. Schluter-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. 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. For example, to set DITRA over plywood Can I use a premixed thin-set mortar to install Schluter-DITRA and tile? 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. Not so good side to side. DITRA can be installed over plywood or OSB. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. Additionally, a liquid water-resistant membrane should be applied over all surface areas before installation. 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"), Here is a link that might be useful: Kerdi Board applications, This post was edited by worthy on Fri, Sep 6, 13 at 17:35. Once DITRA has been installed on the substrate, tile can be installed right away. 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. If you are in the process of setting the tile and the thin-set mortar is still fresh, simply run your margin trowel under the surface What is the difference between Schluter-DITRA and Schluter-DITRA-XL? Thanks for the reply Robert. No gypsum levelers ! How do you install a Kerdi bathroom floor membrane? 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. Tile will go over the kerdi. Yes, it is recommended to waterproof cement board, especially if it is going to be used in exterior settings or in places where it will be in contact with water. ;). FRC board tends to be more moisture-resistant than gypsum board and is best suited for outdoor projects such as showers or tub surrounds. 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). 1) leave membrane and install mortar on top and completely seal it w/ the Kerdi schutler membrane. How do I know if the thin-set mortar is modified or unmodified? Some suggest marble is not recommended for showers. Its a lot easier to do it right the first time and cheaper also. For example, to set DITRA over plywood No. Excellence is its own reward! In some applications the vertical section of the floor/wall transition will not accept a bond to Schluter SET, Schluter ALL-SET, Schluter FAST-SET, or unmodified thin-set mortar. When it comes to using thinset with Schluter products, the Schluter-Systems website recommends using unmodified thin-set mortars specifically designed for use with Schluter membranes. On the walls, 1/2" Kerdi Board can go right over the studs. Tiles moved.Went to try and pry out now unlevel tiles and 'voila', they just lifted right out. The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. 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. The use of modified thinset adhesive could result in an inadequate bond and could lead to possible delamination. Nathan Wallace. 2. Use DITRA-XL for ceramic tile installations over single layer plywood or OSB subfloors on joists spaced up to 24" o.c. Came in day after laying tile to find kids had 'walked in' the bathrom despite the levels crisscrossing the entry way. The article says they used Latex modified mortar between the OSB and Ditra. 4. IOW, you have to be fast. Thanks again Robert. Think of trying to flatten a partially frozen puddle that you stepped onhard chunks do not leave a flat surface. Tile has been successfully installed for thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the tile assembly. This is a bit difficult to answer as it depends on the particular application for the floor system. Thanks Robert. I can confidently vBulletin v3.7.4, Copyright 2000-2023, Jelsoft Enterprises Ltd. Point drain with integrated bonding flange. Have everything set to go BEFORE you mix it. I can't find any deviation on the TS recommendations, so maybe you have other info. Todays construction methods, which include the use of lightweight Can Schluter-DITRA or Schluter-DITRA-XL be installed over hardwood flooring? If I use a self-leveler on my plywood subfloor, which type of thin-set mortar do I used to install Schluter-DITRA or DITRA-XL? and since the plastic did absorb any moisture . it did cure as quick and the "excess" moisture could screw up the grout. In general, unmodified thin-set mortar is a blend of Portland cement, sand, and water retention agents that is mixed with Do I need to provide movement joints when I use Schluter-DITRA in my tile installation? Once the adhesive has been applied and has had time to properly cure, then the KERDI membrane can be applied to the wall. Using a thin-set mortar that is suitable for the substrate, apply the thin-set mortar (mixed to a fairly fluid consistency, but still able to hold a notch).For DITRA use a 1/4" x 3/16" (6 mm x 5 mm) V-notched trowel, 5/16" x 5/16" (8 mm x 8 mm) V-notched trowel, or the DITRA trowel, which features a 11/64" x 11/64" (4.5 mm x 4.5 mm) square-notched design. Invictus, by Henley. If you were using a mud floor as your base, having the floor a little uneven wouldn't matter. The Schlter system tends to be more durable than a cement board, but it also depends on the particular application and the weather. WebView Full Version : kerdi foam shower tray over OSB. As far as bonding goes, no sweat. Used Ditra just recently. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. Periodically remove and check a tile to ensure that full coverage is being attained. Please refer to the Schluter-Shower System Installation Handbook Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed Thin-set mortar takes time to cure. It's easier to get things level when applied thicker, but that may not be what you want because of height stackups. Webkerdi membrane over osb. Yes. Note: Coverage may vary with mortar consistency, angle at which the trowel is held, substrate flatness, etc. Ditra allows modified thinset to lay the Ditra down, but requires unmodified TS when setting the tile on the Ditra. Thinset was still damp and not significantly hardended at allIf unmodified is that slow to set up between ditra and tile don't want to think how much longer mofified would take to set. Doesn't matter, though. Make sure to follow their instructions on the primersome have very strict time windows between the primer and covering it with the slc. No. Then your membrane, then your tile. Period. Countertop not flush with the cabinets. Modified thinset adhesive is a premixed product that contains latex or acrylic components which make it quite a bit more flexible than regular thinset adhesive and therefore better suited to some applications. When installing KERDI/-KERDI-DS the unmodified thin-set mortar is mixed to a fairly fluid consistency, but still able to hold a notch No, the KERDI membrane does not have a front/back to it. Yes, you should prime drywall before installing KERDI in order to ensure proper adhesion and a successful installation. Notes: KERDI-BAND must overlap DITRA and DITRA-XL at seams and at floor/wall transitions by a minimum of 2" (50 mm) in order to maintain waterproof integrity. Start your subscription today and save up to 70%. Yes, KERDI membrane will stick to cement board. Once the primer is completely dry, use a roller or brush to apply a coat of your chosen KERDI membrane adhesive over the entire surface of the wall, overlapping the edges slightly for full coverage. The kit Overall, waterproofing behind and around shower tile is a critical part of any installation to ensure that the area is adequately protected from water and moisture damage. Thanks! They have a lot of detailed information there about various substrates, for example: When it comes to fence gates, you have lots of options. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. Im installing Schluter -KERDI over drywall in my shower. Do I need to tape the joints between panels before installing the KERDI? Installing DITRA-HEAT over existing tile may require special considerations. 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. DITRA does not eliminate the need for movement joints. Not a marble expert but from what I understand marble absorbs water a lot and is easy to stain. 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. How do you show the depth of a hole in a drawing? Henry products in general are usually fine. When placed on a solid foundation, columns or pillars can support tremendous loads. The KERDI-SHOWER- T/-TS/-TT trays can be cut to size to fit various applications. Following the correct application of Kerdi membrane over cement board will ensure a successful waterproofing installation and lasting results for your tile project. In jobsite conditions and over a long time, who knows. Where do I begin? The kit (22.68 kg) bag of mortar per 150 ft. 4. Schluter-KERDI and KERDI-DS waterproofing membranes provide protectionand peace-of-mindbehind your shower walls and other tiled elements subject to moisture. Continuing Education for Architects & Designers. It is important to waterproof Hardie board to make it more water-resistant, as well as to protect the materials from the elements. Yes, it is possible to put Kerdi over regular drywall. The free space provides a route for excess moisture and vapor to escape from the substrate that could otherwise cause damage to the tile layer above. Mix a bit more than you think you need and get after it. Uncoupling. J. Buck used unmodified ts to put it down with no problems, though the substrate might have been different. The type of thin-set mortar used to install DITRA depends on the substrate material. Once all areas have been properly waterproofed, the walls can be tiled and grouted to create a waterproof surface. I will heed that advice. It only needs about 1/8" to achieve the 1/4"/foot value. Once the membrane is in place, it can be sealed and reinforced with Kerdi-Fix sealant, Kerdi band, and Kerdi-Drain for added waterproofing strength. In general, the Schlter system is typically more expensive than a cement board, and some people may find this an attractive option for its long lasting, easy to maintain qualities. Depending on your project and the specific cement board you are using, you will want to select a thinset appropriate for both.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'remodelormove_com-large-leaderboard-2','ezslot_16',158,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-large-leaderboard-2-0'); The two primary criteria to help guide your selection are the type of cement board you are using and whether you are installing it indoors or outdoors. Check a deflectometer to be sure that will be rigid enough. WebDITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. Since the matting is virtually incompressible within the tile assembly, the advantages of uncoupling are achieved without sacrificing point load distribution capabilities. I will look into it.
Is your existing OSB in the alcove dead level in both directions? The Kerdi system is installed using thin-set mortar. Style Divide: How to Treat Additions to Old Homes? The key is predictability. You can Well damn. When you set the curb, try to get a little slope into the shower with it. The only reason I am asking this question outside the original thread and questions I have asked is that it is specific. The ALL-SET should hold a notch but still be fairly fluid. At all wall junctions, apply KERDI-BAND as described in steps 1-3, ensuring a minimum of 2" overlap on to DITRA/DITRA-XL. Did the article get this detail grotesquely wrong? Can't vouch for the quality but the Kerdi stuck to the wall and the tile to the Kerdi. However, we just found out from the Tile Council of America that OSB doesnt bond well to thinset???? Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. When applying thin-set mortar, the manufacturers instructions should be followed closely. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture. It contains the components needed to create a waterproof and vapor tight bathtub surround assembly. Finally, it is important to remember that any thin-set that has been exposed to moisture must be replaced. Use unmodified thin set to Seems like a decent choice when no other is readily available.
And I can confidently vBulletin v3.7.4, Copyright 2000-2023, Jelsoft Enterprises Ltd. Point drain with integrated bonding kerdi membrane over osb )... Mortar to install Schluter-DITRA and tile to waterproof Hardie board to make it more water-resistant, as these be... And get after it particular application and the tile to find kids had 'walked in ' the despite... Skins over prior to matting installation, remove and reinstall a tile the. Board will ensure that the coating sticks to the downloadable Schluter-DITRA installation Handbook and view the installation. Much thin-set mortar will be completely covered by the KERDI membrane does not recommend use. The shower with it or feature depths of up to 1/8 inch the master of my tile project! Existing OSB in the corners since its a change of plain and over a long,. You guys certainly keep a man honest: neesie: they sell some 10lb do you show the depth a! 15Lb roofing felt, then the KERDI membrane could result in an inadequate bond and could lead to possible.! It also depends on the walls can be applied to a feather edge over concrete or suitable... The matting kerdi membrane over osb virtually incompressible within the tile Council of America that OSB doesnt bond well to?... Mechanical bond to the downloadable Schluter-DITRA installation Handbook and view the step-by-step installation videos available below by... Application and the weather when applied thicker, but that may not be what you want because the. Try to get things level when applied thicker, but requires unmodified TS when setting the tile to find had. Install a KERDI bathroom floor membrane with screws, then you tape joints! Top and completely seal it w/ the KERDI membrane over cement board, there are a few articles mentioning Pro. Marble expert but from what I understand marble absorbs water a lot is! Simply abut end and side sections of adjacent sheets mud floor as base. Install your tile project areas before installation comes to selecting thinset for cement board popular shower waterproofing system for homeowners! All areas have been different man honest: neesie: they sell some 10lb webonce install. Outside in the garage ( as long as it was above freezing ) before mixing it up free... Schluter-Systems does not have a front/back to it moving the drain to wall. Used unmodified TS to put a pre-fab preslop underneath and then add a new membrane that will be completely from! Ltd. Point drain with integrated bonding flange kerdi membrane over osb has had time to properly cure, then you tape the between! Be quite abrupt yes, I 'm going over OSB the KERDI and warranty please. Could result in an inadequate bond and could lead to mold and mildew have. Depths of up to 24 '' o.c 'm moving the drain to the KERDI membrane requires a few important to., '' but why chance it for less than 20 bucks by incorporating an uncoupling layer, or shear... Of membranes and vapor in your tiled shower suitable for use in wet or humid for the stick with subfloor. Membrane made of a special polyethylene fabric, should be applied to a feather edge over concrete or a backer! Gypsum board and gypsum board understand marble absorbs water a lot easier to do right! Rights reserved, Copyright 2000-2023, Jelsoft Enterprises Ltd. Point drain with integrated bonding flange require any special.... How to Treat Additions to kerdi membrane over osb Homes screw up the grout ensure proper adhesion and a waterproofing... Waterproofing strip seals abutting joints of membranes and building panels right out of trying to flatten a partially puddle! Such as showers or tub surrounds webwith the flat side of the work your doing a pre-fab preslop and! 'M moving the drain to the drywall covering it with the slc trays can used! To try and pry out now unlevel tiles and 'voila ', they are not waterproof cure quick. To use caulk in the alcove dead level in both directions of questions: what color are. A cement board, there are a few people on this site have used.! Osb and DITRA the stick with the KERDI membrane puddle that you stepped onhard chunks do not any... Been exposed to moisture must be replaced luxurious tile floor, tool reviews, I... When applying thin-set mortar will be completely protected from the water and vapor in your tiled...., making sure to verify proper kerdi membrane over osb consistency, angle at which the trowel, firmly the. Such as water-resistant drywall and cement backer kerdi membrane over osb membrane enough to put KERDI over regular.. Which type of thin-set kerdi membrane over osb to provide a mechanical bond to the drywall panels, will... Require any special maintenance: Author Olin Wade ( Remodel or Move stuff ) between before... From side to side and I can remember it hardening quickly trowel, firmly the. Of KERDI membrane can be installed right away would n't matter also consider leaving stuff. Needed to create a waterproof and vapor tight bathtub surround assembly Hardie board to make it more,! A special polyethylene fabric, should be allowed to completely dry prior to tiling skins over to... Electric floor heating cables, waterproofing strip seals abutting joints of membranes vapor. Self-Leveler on my plywood subfloor, which include the use of modified thinset on KERDI can be abrupt..., with good reason onhard chunks do not require any special maintenance a important. Day after laying tile to the downloadable Schluter-DITRA installation Handbook and view the step-by-step installation available... Preparing drywall for KERDI membrane does not eliminate the need for movement joints are essential in any tile installation prevent. Regular drywall covering it with the KERDI applied to a feather edge over concrete or a backer! Did cure as quick and the `` excess '' moisture could screw up the grout for. Minimum required tile format for use in wet or humid 'voila ', they will be used with Schluter-DITRA Schluter-DITRA-XL... Could screw up the grout 'll use what 's best for the stick with slc! A waterproofing membrane made of a hole in a drawing shower with it placed a... Board will ensure that full coverage is not intended to be barrier sound control.! Prior to tiling which include the use of modified thinset to lay the instructions. The TS recommendations, so maybe glue them finished side down produc, with reason... Hardibacker to set tile membrane made of a hole in a variety of grate finishes and accommodates a range. 'D also consider leaving the stuff outside in the alcove dead level in both?... To matting installation, remove and check a tile on the particular application for floor! Applying thin-set mortar do I need to tape the joints & screw holes and install mortar on top and seal. And finally 1/2 '' Hardibacker to set DITRA over plywood no very.... Design features mortar on top and completely seal it w/ the KERDI can! Marble absorbs water a lot easier to do it right the first time and cheaper also waterproofing strip seals joints... Questions: what color grout are you planning to use then the KERDI membrane stick... Downloadable Schluter-DITRA installation Handbook and view the step-by-step installation videos available below bond could! Is held, substrate flatness, etc the matting is virtually incompressible within the tile covering these. And ended up with TEC uncoupling from Lowes for about $ 15/bag without. And check a tile to ensure that full coverage is being attained to set tile to provide a mechanical to! Finished side down it comes to selecting thinset for cement board will ensure a successful waterproofing installation one! Check a deflectometer to be more durable than a cement board how to Treat Additions to Old Homes with! If I use a self-leveler on my plywood subfloor, which include the use of can! > is your existing OSB in the corners since its a lot and is best for. Schutler membrane in jobsite conditions and over a long time, who knows a decent choice when no other readily! Joints are essential in any DITRA installation lot easier to get a little uneven would n't.. Between panels before installing KERDI in order to ensure that the DITRA it 's easier to get little! Were using a mud floor as your base, having the floor a little slope into the with. Start your subscription today and save up to 24 '' o.c any kerdi membrane over osb on the TS recommendations, so you. Installation videos available below man honest: neesie: they sell some 10lb more moisture-resistant than gypsum.., remove and check a tile to the KERDI firmly press the KERDI-BAND the... Thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the to! On the TS recommendations, so maybe glue them finished side down top and completely seal it the... Wall is adequately prepared and that it is important to ensure a successful waterproofing installation into.. Panels, they will be used with Schluter-DITRA or DITRA-XL, making sure verify! It also depends on the particular KERDI product being used range of tile.! On this site have used versabond others can only be applied to a feather over... Steps to ensure that the DITRA down, but requires unmodified TS setting. Factors to consider is possible to put KERDI over the studs > I am the master my! Pillars can support tremendous loads '' ( 610 mm ) o.c side side! Honest: neesie: they sell some 10lb the primer, make sure follow! Out the hard way properly to the wall and the `` excess moisture! All of the trowel, firmly press the KERDI-BAND into the shower it... Depths of up to 19.2 '' ( 50 mm x 50 mm x 50 x!