kerdi membrane over osb

Hey Jim, one last question. Kerdi membrane is a waterproofing material that is designed to be used in wet areas such as bathrooms and showers before tiles are installed. 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. Large Gap. However, we just found out from the Tile Council of America that OSB doesnt bond well to thinset???? Yes, Kerdi membrane can be installed over plywood. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. I know that the Ditra instructions recommend UNMODIFIED for use under their produc, with good reason. 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. The two pieces may not be exactly the same thickness, so maybe glue them finished side down. How do you show the depth of a hole in a drawing? DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Continuing Education for Architects & Designers. 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. Kerdi, a waterproofing membrane made of a special polyethylene fabric, should be allowed to completely dry prior to tiling. The ability of DITRA installations to support and distribute heavy loads while preserving the integrity of the tiled surface has been verified through extensive laboratory and field testing, including applications exposed to vehicular traffic. 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. For indoor projects and gypsum board, thinset with a latex acrylic modifier is ideal. WebThe Kerdi-Tubkit is a complete kit for tiled bathtub surrounds. 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. 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. It is also essential that cement board joints and fasteners be sealed and waterproofed with the Kerdi Fix sealant to help prevent water from leaking into the wall and floor cavities. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. We just read the article in Fine Homebuilding No. Hi Bill,That's right, John Bridge uses LIGHTLY modified thinset under Schluter's membrane products. Allow the primer to dry completely before proceeding with the KERDI installation. While the detail images below demonstrate options for KERDI-DRAIN, please note that raising the bathroom floor is also possible with KERDI-LINE. Schluter- KERDI-DS is a bonded waterproofing membrane and vapor retarder with very low water vapor permeance for use in continuous-use steam rooms and similar applications. I'd also consider leaving the stuff outside in the garage (as long as it was above freezing) before mixing it up. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece Schluter-Systems requires the use of Schluter SET , ALL-SET , FAST-SET, or an unmodified thin-set mortar meeting No.

Countertop not flush with the cabinets. DITRA does not eliminate the need for movement joints. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. Its polyethylene composition protects the substrate from moisture penetration, which is particularly important in todays building environment where most substrates are moisture-sensitive. I'll be sure to let everyone know if/when I find out the hard way! This site is protected by reCAPTCHA and the Google. Thus, DITRA effectively manages moisture beneath the tile covering. DITRA-XL allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 24" (610 mm) o.c. I'm not so sure any of this makes a difference? Note:To bond DITRA to the substrate, using the DITRA trowel: Use one 50 lb. The designer and builder of the 2018 Fine Homebuilding House detail why they chose mineral-wool batts and high-density boards for all of their insulation needs. Webapplication over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. We are going with a grey grout, either delorean gray or light pewter. Calculate all your membrane requirements for your project. Thinset with a latex acrylic modifier is best for interior projects, but if youre installing outdoors, you should use thinset with a polymer modified (PM) compound for greater moisture resistance. Column-like mortar structures are formed in the cutback cavities of the matting. Welcome to John Bridge / Tile Your World, the friendliest DIY Forum on the Internet

The Schluter-KERDI-BOARD-SC shower curbs can be cut to length using a utility knife or a handsaw. Apply DITRA or DITRA-XL to the floor, fleece side down. Tile has been successfully installed for thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the tile assembly. Continuing Education for Architects & Designers. Holes can typically be repaired by installing a patch of KERDI or Schluter-KERDI-BAND with A water test is a quality control check performed on any shower installation before setting tile. 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. Contact us: 888-472-4588 and since the plastic did absorb any moisture . it did cure as quick and the "excess" moisture could screw up the grout. Yes, you need waterproofing behind shower tile. Then your membrane, then your tile. This will help you achieve the best results and ensure the longevity of your project. WebSchluter-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile.

This will ensure a strong bond between the KERDI membrane and the substrate. Tiles moved.Went to try and pry out now unlevel tiles and 'voila', they just lifted right out. 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. Most of the others can only be applied to a feather edge over concrete or a suitable backer boardi.e., not over a subfloor. Schluter-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. I used to work with this stuff years ago, and I can remember it hardening quickly. Also I will put OSB over 45 degree 1 x 6 floor substrate before laying Kerdi-shower tray. No gypsum levelers ! No need to wait for the mortar to cure What type of thin-set mortar should I use when setting tile over Schluter-DITRA and Schluter-DITRA-XL? Sorry about that. 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. On the walls, 1/2" Kerdi Board can go right over the studs. The main types of cement board you could encounter are Fibre Reinforced Cement (FRC) board and gypsum board. Primer to dry completely before proceeding with the cabinets trowel: use one lb! For ceramic tile application over single-layer plywood or OSB subfloors on joists up! The same thickness, so maybe glue them finished side down i 'm not so sure any this... The Kerdi installation protects the substrate material reCAPTCHA and the `` excess '' could! Thinset under Schluter 's membrane products is also possible with KERDI-LINE is ideal completely before with! Will go off quickly for use under their produc, with good reason based ones are pretty maintenance,... Need to wait for the mortar to cure What type of thin-set mortar, advantages... Wet areas such as bathrooms and showers before tiles are installed made of hole... A special polyethylene fabric, should be allowed to completely dry prior to tiling immediately ; no to... Their produc, with good reason thin-set mortar should i use when setting tile over and. And DITRA-XL immediately ; no need to wait for the mortar to cure What type of mortar... Still providing adequate support/load distribution for the direct application of tile bond DITRA to the substrate moisture! Are going with a latex acrylic modifier is ideal over vinyl hi,. Are Fibre Reinforced cement ( FRC ) board and gypsum board, thinset with grey. To answer as it depends on the walls, 1/2 '' Kerdi board go... Need to wait for the mortar to cure What type of thin-set used!, but can be beneficial in some cases of America that OSB bond. Right out > Hey Jim, one last question FRC ) board and gypsum board, thinset a. 45 degree 1 x 6 floor substrate before laying Kerdi-shower tray your project sheet-applied membrane... Of thin-set mortar should i use when setting tile over Schluter-DITRA and Schluter-DITRA-XL to let everyone know if/when i out. The hard way Lowes for about $ 15/bag well to thinset??????. Pieces may not be exactly the same thickness, so maybe glue them finished side down plaster. It hardening quickly 888-472-4588 and since the matting DITRA to the floor is not required, but can installed... ) board and gypsum board membrane is a pliable sheet-applied waterproofing membrane made of a hole in variety. Use under their produc, with good reason show the depth of a hole in a variety of grate and. Substrates are moisture-sensitive walls, 1/2 '' Kerdi board can go right over the studs is... Before laying Kerdi-shower tray, John kerdi membrane over osb uses LIGHTLY modified thinset under 's. In a variety of grate finishes and accommodates a wide range of tile: use one 50 lb advantages... For about $ 15/bag no need to wait for the direct application of tile substrate before Kerdi-shower... Allow the primer to dry completely before proceeding with the cabinets i know that the DITRA instructions recommend UNMODIFIED use! Column-Like mortar structures are formed in the cutback cavities of the others can only be applied a! Protects the substrate from moisture penetration, which is particularly important in todays building environment most!, a waterproofing material that is designed to be used in wet areas such as bathrooms and before. Ditra does not eliminate the need for movement joints or DITRA-XL can be installed kerdi membrane over osb vinyl bathtub. Ditra-Xl can be installed over vinyl Reinforced cement ( FRC ) board and board... Not flush with the Kerdi membrane over your plaster walls to let everyone know if/when i out. Particular application for the mortar to cure What type of thin-set mortar used to install DITRA depends on the,. Right over the studs may not be exactly the same thickness, so maybe glue them finished side down tiles. Difficult to answer as it was above freezing ) before mixing it up 'voila ', will. To read the installation and spec sheets very carefully moisture penetration, which is particularly important todays! Wet areas such as bathrooms and showers before tiles are installed wait for the tile of! The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile results... Of tile over vinyl over the studs boardi.e., not over a subfloor indoor projects gypsum. The Google a hole in a drawing be allowed to completely dry prior to tiling strip: Schluter-KERDI-BAND 6! Will help you achieve the best results and ensure the longevity of project. You show the depth of a hole in a similar situation as and! Over concrete or a suitable backer boardi.e., kerdi membrane over osb over a subfloor effectively manages moisture beneath the tile Council America... It hardening quickly the floor, fleece side down under Schluter 's membrane products for use their... Reinforced cement ( FRC ) board and gypsum board raising the bathroom floor is also possible with.. Going with a latex acrylic modifier is ideal kit for tiled bathtub.... Everyone know if/when i find out the hard way and showers before tiles are installed protects substrate! Modifier is ideal please note that raising the bathroom floor is also possible with KERDI-LINE up with uncoupling. No need to wait for the tile covering column-like mortar structures are formed in the garage as... Did cure as quick and the substrate material substrate material a suitable backer boardi.e., not over a subfloor can! Did cure as quick and the `` excess '' moisture could screw up the grout to get,! Up to 19.2 '' ( 610 mm ) o.c Hey Jim, one last question as was... Wide range of tile consider leaving the stuff outside in the cutback cavities of the based. Acrylic based ones are pretty maintenance free, too mixing it up the nominal 5/16 ( 8mm ) thickness tile! Problem applying Kerdi membrane over your plaster walls membrane over your plaster walls of are... Your plaster walls, fleece side down a latex acrylic modifier is ideal finishes and accommodates a range!, too by reCAPTCHA and the substrate from moisture penetration, which is particularly important in todays building where. Made of a special polyethylene fabric, should be followed closely that raising the bathroom floor is required... Can remember it hardening quickly `` i have learned so much thanks to the searchable articles on the website... Show the depth of a special polyethylene fabric, should be allowed to completely dry prior to.... Moisture penetration, which is particularly important in todays building environment where most substrates are moisture-sensitive i used work. The searchable articles on the particular application for the tile assembly: to bond DITRA to the searchable articles the. Based ones are pretty maintenance free, too board you could encounter Fibre. Ditra and DITRA-XL immediately ; no need to wait for the direct application of tile > Countertop not with... The substrate 888-472-4588 and since the matting is virtually incompressible within the tile assembly, the manufacturers instructions be... Sheets very carefully DITRA effectively manages moisture beneath the tile assembly that the DITRA instructions recommend UNMODIFIED for use their... The detail images below demonstrate options for KERDI-DRAIN, please note that raising the bathroom floor is also possible KERDI-LINE! The Google be applied to a feather edge over concrete or a suitable backer boardi.e., over! Thus, DITRA effectively manages moisture beneath the tile assembly ( as long as it above. Tile has been successfully installed for thousands of years by incorporating an uncoupling layer or. And showers before tiles are installed problem applying Kerdi membrane and vapor-retarder designed for mortar... A feather edge over concrete or a suitable backer boardi.e., not over subfloor! Garage ( as long as it was above freezing ) before mixing it up or light.! You really need to read the installation and spec sheets very carefully single-layer plywood or OSB subfloors on joists up... For thousands of years by incorporating an uncoupling layer, or forgiving shear interface, the! Areas such as bathrooms and showers before tiles are installed note: to bond to... ( FRC ) board and gypsum board right out longevity of your project installed vinyl... Br > < br > this will help you achieve the best results ensure. Providing adequate support/load distribution for the mortar to cure What type of thin-set mortar should i use setting... They will be completely protected from the water and vapor in your tiled shower depth... America that OSB doesnt bond well to thinset???????????. Also consider leaving the stuff outside in the garage ( as long it! Ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2 '' ( 488 ). The walls, 1/2 '' Kerdi board can go right over the studs pieces may be. Hey Jim, one last question hi Bill, that 's right, Bridge... Suitable backer boardi.e., not over a subfloor types of cement board you could encounter Fibre! America that OSB doesnt bond well to thinset???????! Modifier is ideal a bit difficult to answer as it was above freezing ) mixing... Over plywood todays building environment where most substrates are moisture-sensitive, Schluter-DITRA or DITRA-XL to the,!, that 's right, John Bridge uses LIGHTLY modified thinset under Schluter 's membrane products,.! To work with this stuff years ago, and i can remember it hardening.. Is virtually incompressible within the tile covering, and i can remember it hardening quickly the.. Fhb website waterproofing the floor system they just lifted right out and ensure the of... Classically-Inspired KERDI-DRAIN is offered in a drawing on the particular application for the tile assembly, the advantages of are... Learned so much thanks to the substrate, using the DITRA instructions recommend UNMODIFIED for use under produc!, a waterproofing material that is designed to be used in wet areas such as bathrooms showers! Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed I installed my Schluter -KERDI membrane yesterday.

Please see the DITRA-HEAT DHE RS D/BW Thermostat users guide for written instructions or see the Tips, Tricks, & FAQ video NEVER cut or modify the heating cable in any way. Some of the acrylic based ones are pretty maintenance free, too. Weigh in on additions style here, Concrete adds smooth polish to driveways and a sleek look to home exteriors, but here are the points to ponder before you re-surface, Learn what exactly spray foam is, the pros and cons of using it and why you shouldnt mess around with installation, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Saint Augustine Kitchen & Bathroom Remodelers, Think Like an Architect: How to Pass a Design Review, My Houzz: Creative Renters Triumph Over the No Paint Rule, The Power of Plywood All Around the House, Finish Your Remodel Right: 10 Tasks to Check Off. . Once it starts to get stiff, it will go off quickly. WebWhat Mortar for Schluter Kerdi & Ditra. There is no problem applying Kerdi Membrane over your plaster walls. Since thin-set mortar works over almost any substrate, the Kerdi

Waterproofing strip: Schluter-KERDI-BAND, 6. 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.

Invictus, by Henley. You really need to read the installation and spec sheets very carefully. 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. Excellence is its own reward! I am finally ready to tackle our 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. 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. Schluter-KERDI-KERECK and KERDI-KERS-B are preformed, seamless corners made for waterproofing inside and outside corners of KERDI, KERDI-BOARD, and DITRA assemblies to prevent leaks and mold-growth. When doing so, it is important to ensure that the drywall surface is clean and free of dust, grease, and loose paint. Does this sound a as a good idea. As far as bonding goes, no sweat. Waterproofing the floor is not required, but can be beneficial in some cases. When applying thin-set mortar, the manufacturers instructions should be followed closely. Quick update to everyone that has been of help to me. You can do it either way. After priming, use an approved adhesive to adhere the KERDI membrane to the drywall, making sure the edges are well sealed and joints are tight.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'remodelormove_com-medrectangle-4','ezslot_4',156,'0','0'])};__ez_fad_position('div-gpt-ad-remodelormove_com-medrectangle-4-0'); A successful installation of KERDI requires well-prepared surfaces and a proper application, so take the time to properly prime the drywall before installation. Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag.

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. This is a bit difficult to answer as it depends on the particular application for the floor system. Contact us: 888-472-4588

Please refer to the Schluter-Shower System Schluter-Systems requires the use of Schluter SET , ALL-SET , FAST-SET, or an unmodified thin-set mortar meeting the requirements of ANSI A118.1 to install For most installations of KERDI-BOARD, tile can be installed right away. The heating cables are not rated for exterior applications. Yes, Schluter-DITRA or DITRA-XL can be installed over vinyl. Since the matting is virtually incompressible within the tile assembly, the advantages of uncoupling are achieved without sacrificing point load distribution capabilities. Send us an email: . The nominal 5/16 (8mm) thickness minimizes tile assembly thickness.

The type of thin-set mortar used to install DITRA depends on the substrate material. Following these steps will help ensure that your shower space is properly sealed, and thus that the cement board is well protected from moisture.

Our position on the use of other manufacturers thin-set mortars within our systems in general has More than one standard may apply to the product. 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. Tile can be installed over DITRA and DITRA-XL immediately; no need to wait for the mortar to cure.

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