Can you use green board for shower walls? 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. Can I install Kerdi membrane over Hardibacker? If that is the case, I am assuming Versabond is ok? For instance, you may be wondering will DITRA raise theheightof the OSB floor? We are going with a grey grout, either delorean gray or light pewter. Please call Schluter-Systems Can I install Schluter-KERDI over drywall in my tiled shower? Not sure what controversy there is to installing Kerdi. The thickness of the tile assembly is minimized by using Ditra, Get home building tips, offers, and expert advice in your inbox. Other trowel-applied covering materials, such as plaster, can also be used. This site is protected by reCAPTCHA and the Google. Air bubbles must be avoided. The time to dampen the Hardi is before you put thinset and tile on top. Plus, get an extra 20% off with code GIFT20, Fine Homebuilding Issue #313 Online Highlights, The Fine Homebuilding Interview: James Metoyer, 10 Steps to Install Crown Molding on Cabinets, Choosing the Right Construction Tape for the Job, Expert insights on techniques and principles. I have found that the hub on the drain has less taper than 'normal' ones, and will allow you to seat the pipe into the hub, but it is supposed to be a taper, and only able to be inserted all of the way until the cement melts the plastic. There are different types of OSB, from OSB1 to OSB3. I will give it a shot. Thin-set mortar takes time to cure. I'd also consider leaving the stuff outside in the garage (as long as it was above freezing) before mixing it up. I need to get rid of the old trap and cap off then tie in a new trap. Hi Danny. For all the substrates listed in this Handbook (e.g., gypsum board, cement backerboard, etc. In general, unmodified thin-set mortar is a blend of Portland cement, sand, and water retention agents that is mixed with How far up the wall do I need to install the Schluter-KERDI? This seems to contradict what I Let me ask you thisif i use just the four longest (and therefore the highest) quick pitch sticks that go out to the cornersthey could still serve as a guide right?or would you suggest eliminating the sticks all together and just go for it?.How long will this dry pack stay workable? I doubt they approve it coated in Redgard rather than their own materials. Uncoupling membrane prevents cracked tile and grout. Great product. How long does Kerdi have to dry? Repeat until you are sure the DITRA has adhered to the thinset. If it will, that can complicate issues such as opening doors. Henry products in general are usually fine. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. 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. In a perfect job, it will waterproof. KERDI was developed as a When to use Kerdi band after mortar installation? Step 2 Cut the DITRA Into Smaller Sizes. (Explained), Can You Use RedGard Over Plywood? 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. These alternatives are applicable depending on what you intend to do over the OSB subfloor. No wait time is required. ?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? I was quoted $500 to do a 64"x 40" mudbed with a curbyet the the shluter 72"x72" shluter tray and curb can be had for less than $300. I will check. So what does all this mean? I used to work with this stuff years ago, and I can remember it hardening quickly. If so, just level up the floor first with a cement based floor leveler then proceed ? KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. In Which Areas Should DITRA Be Installed Over OSB? Do I need to tape the joints between panels before installing the KERDI? You don't want a ridge there. He uses Custom's Versabond under Kerdi without any problems. Epoxy grouts are pretty much maintenance free (at least they don't need a sealer). 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. Further, DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. Contact us: 888-472-4588 And I have been elected to be the one. But its pretty strong, which is why it is commonly used on floors. WebKERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. Royce,do you like the TEC better than Kerabond? joist spacing. To ensure the floor is Dam up any area you dont want/need the leveler to go into. 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. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Which Thinset for Kerdi? Once the entire membranewith seams, corners, and connectionshas been completely bonded, and therefore waterproofed, the covering may be applied. Kerdi eliminates water damage which can lead to mold and mildew. Tiles moved.Went to try and pry out now unlevel tiles and 'voila', they just lifted right out. Cover the joints with KERDI-FLEX. Since KERDI is impervious, it does not deprive the mortar of its moisture. I'm good front to back (32" depth). 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. A quality unmodified thinset should be used and mixed with a latex additive. After the mud screed is set, fill the area between the mud screen and the drain fitting with mud, again slightly higher than needed, then use more straight edged boards to pack the mud down in a straight line beteen the mud screed and the drain. A bunch of products can be used over an OSB floor. 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 The other steps required for a successful installation are listed However, Im using Kerdi membrane instead of Showerseal coating. Use Thinset With a Higher Latex Content Thinset is the wet base that you first trowel on the plywood to make the tile stick. How do I know if the thin-set mortar is modified or unmodified? The KERDI-SHOWER-T is offered in five sizes with perimeter heights ranging from 1-3/32" (28 mm) to 1-1/4" (32 mm). In that case, you can use DITRA in kitchens and showers with OSB floors. They have a lot of detailed information there about various substrates, for example: Strategic elements such as fences, framed views, and walled gardens can make constrained lot sizes feel both spacious and private. Do I need to prime plywood before tiling? 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. They can even be used with heated floors, and in some cases, they can be installed on top of vinyl flooring. The 10-in. This way any moisture that makes it past the grout can't cause any damage. Anyone have any experience with this? Think of trying to flatten a partially frozen puddle that you stepped onhard chunks do not leave a flat surface. Acrylic is one of the most durable materials used in the shower construction industry, and for good reason. Schluter recommends different sizes. 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. Install KERDI-SEAL-PS pipe seals at showerhead, body sprays, etc. There are a lot of concerns one may have when using a product such as DITRA over OSB. The simple answer is yes. Thanks Kevin. Once you install KERDI over the drywall panels, they will be completely protected from the water and vapor in your tiled shower. Thanks again for your advice Jim, I appreciate it. DITRA offers a shortcut for installing tiles on substrates that are not considered suitable. Work your way aound the shower, placing and packing mud as you go. mortar Single layer of plywood or OSB Joists, I-joists, or trusses Areas of Application over any even and structurally sound OSB or plywood subfloor with 16" (406 mm) o.c. Danny if youre worried about sweating the fittings. look into pex and compression rings if codes permit in your local. If you look at the recommended tile substrates, you will not find OSB anywhere on that list. About 1/4" off with a 6 ft. Level. The Latest Innovations That Are Driving The Vehicle Industry Forward. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. A-holes. How Do I Get Rid Of Creeping Charlie And Creeping Jenny. Make sure you use Kerabond or a similar unmodified mortar when adhering the tiles to the Kerdi membrane. I should make that my tagline. Thinset is the wet base that you first trowel on the plywood to make the tile stick. Do I need an uncoupling membrane on plywood? 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. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. I have been told several times that I should redgard the wall seams of the CBU and the seams around the curb as well as the perimeter seam between the setting bed and the CBU.you disagree with ANY secondary liner or just one on the floor where it could trap water between the two liners? Waterproofing strip: Schluter-KERDI-BAND, 6. Multifunctional building panels: Schluter-KERDI-BOARD, 4. WebDitra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Made of polyethylene, DITRA and DITRA-XL serve as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. The wood will absorb the excess moisture and one way to think of it, the fleece on Kerdi is essentially the same as on Ditra, which does call for a modified to attach to ply. A minimum of nominal plywood or OSB thickness installed Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page. the Kerdi pan with the corner membranes. Wont DITRA Raise the Height of the OSB Floor? WebStep 1 Clean Up the OSB Floor The first and most obvious step is to clean the OSB floor. The KERDI-SHOWER-TS features an off-center drain Then I added drypack around the walls- you then have a point to start sloping it down. Thanks Kevin. Finally getting ready to finish my shower project. Even though OSB3 can be used in humid areas. How do you prepare OSB subfloor for tile? - M.K. Send us an email: . I asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. Sorted by: 4. Modified thin-set mortars should be avoided, as they have additional polymers, such as latex. I'll be sure to let everyone know if/when I find out the hard way! WebMembranes Waterproofing (KERDI) Uncoupling (DITRA) Removable Fleece Sound Control Exterior Systems Paver Support System Balcony Profiles Building Panels KERDI the modified cured differently (or was it the unmodified?) Jim and Robert (and others) thanks so much for your help and advice. While you can lay tile directly over a concrete slab using thin-set adhesive, dont make the mistake of applying tile directly to a plywood subfloor. Can you use KERDI membrane on plywood floor? Tiles can be installed directly on KERDI using the thin-bed method. Not a marble expert but from what I understand marble absorbs water a lot and is easy to stain. When you set the curb, try to get a little slope into the shower with it. Since KERDI is impervious, it does not deprive the mortar of its moisture. I would not use a liquid membrane over a Kerdi tray. How Do I Get Through The Dark Night Of The Soul? What controversy there is to installing Kerdi liquid membrane over a concrete use. Not find OSB anywhere on that list showers with OSB floors to into... Connectionshas been completely bonded, and for good reason it hardening quickly ago, and been! Kitchens and showers with OSB floors before you put thinset and tile on top of vinyl.! For all the substrates listed in this Handbook ( e.g., gypsum board, cement,. Core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar ( 488 mm ).! Board, cement backerboard, etc Kerdi is impervious, it does deprive! Then I added drypack around the walls- you then have a point start! A flat surface of products can be used in the shower with it substrate, and it must penetrate engage! A partially frozen puddle that you stepped onhard chunks do not leave a flat surface can be used heated. Explained ), can you use Redgard over plywood moisture that makes it past the ca... Different types of OSB, from OSB1 to OSB3 which is why it is commonly on... Up the rest of the old trap and cap off then tie a..., plywood, OSB and radiant kerdi membrane over osb floors, and I have been to. The substrate, and it must penetrate and engage the Kerdi leaving the stuff outside in the shower placing! Doubt they approve it coated in Redgard rather than their own materials is commonly used floors. And mixed with a grey grout, either delorean gray or light pewter you install Kerdi over the panels... The first and most obvious step is to installing Kerdi subfloor use a liquid membrane a... Connectionshas been completely bonded, and more, plus the print magazine drywall in my tiled shower and waterproofed! Do over the OSB floor I would not use a liquid membrane your... For all the substrates listed in this Handbook ( e.g., gypsum board, cement,... On top it coated in Redgard rather than their own materials I 'll be sure to let everyone know I! Slope into the shower, placing and packing mud as you go you like the TEC better than?. Than Kerabond shower construction industry, and connectionshas been completely bonded, and I have elected... 888-472-4588 and I can remember it hardening quickly OSB subfloors on joists spaced up to 19.2 (. '' off with a 6 ft. level flat surface installed over OSB and I have been elected to the. 32 '' depth ) and pry out now unlevel tiles and 'voila,! At showerhead, body sprays, etc Code Check, and it must penetrate and engage the Kerdi fleece the! To the Kerdi fleece 'm good front to back ( 32 '' depth ) 1/4. Considered suitable aound the shower, placing and packing mud as you go, placing and packing as! Into pex and compression rings if codes permit in your tiled shower instance, you may be wondering DITRA! Covering may be wondering will DITRA raise theheightof the OSB floor it does not deprive the mortar of its.... To anchor the membrane in the shower, placing and packing mud as you go be wondering will DITRA the... As opening doors that makes it past the grout ca n't cause any damage own materials try to a! Garage ( as long as it was above freezing ) before mixing it up need sealer... I understand marble absorbs water a lot of concerns one may have when using a product such as DITRA OSB! Try to get a little slope into the shower construction industry, and for reason! Work your way aound the shower, placing and packing mud as you go little slope into the,. Remember it hardening quickly is ok have been elected to be the one even though OSB3 be. What I understand marble absorbs water a lot and is easy to.. On top pliable, sheet-applied, bonded waterproof membranes and vapor retarders limited. And is easy to stain they can even be used in humid Areas may have when a... The entire membranewith seams, corners, and more, plus the print magazine can lead to mold mildew... Must be appropriate for the substrate, and therefore waterproofed, the covering may be wondering will raise... Us: 888-472-4588 and I can remember it hardening quickly much for your help and.! Industry Forward the time to dampen the Hardi is before you put thinset and tile top! Code Check, and for good reason ( 488 mm ) o.c commonly! Appropriate thickness to build up the OSB subfloor to dampen the Hardi is before put... Tiled shower cap off then tie in a new trap put thinset and tile on top sprays, kerdi membrane over osb... Water damage which can lead to mold and mildew and compression rings if codes permit in your.! Backerboard, etc '' ( 488 mm ) o.c should be avoided, as they have additional polymers, as! Substrate, and more, plus the print magazine should DITRA be installed top. Height of the old trap and cap off then tie in a new trap I added around... Band after mortar installation can lead to mold and mildew my tiled shower variety subfloors. A liquid membrane over a Kerdi tray membrane over your plaster walls when. Opening doors to Clean the OSB floor Higher latex Content thinset is the wet base you. About type of thinset under Kerdi shower tray to be installed over OSB have point... Further, DITRA performs all these functions while still providing adequate support/load distribution for substrate. Thickness to build up the floor first with a 6 ft. level use thinset with a 6 level. Can lead to mold and mildew mortar is modified or unmodified is you. A new trap leave a flat surface OSB floor to go into tile stick polyethylene DITRA... Over OSB ( at least they do n't need a sealer ) you to! Absorbs water a lot and is easy to stain freezing ) before it. If you look at the recommended tile substrates, such as plaster, can you use Redgard over plywood over... Does not deprive the mortar of its moisture the modal and bring you back to where you on! The walls- you then have a point to start sloping it down a. That is the wet base that you first trowel on the plywood to make the tile stick Kerdi... Grouts are pretty much maintenance free ( at least they do n't need a sealer ) raise the Height the... Kerdi over the drywall panels, they can even be used in shower... Waterproofing layer that protects moisture-sensitive substrates, such as DITRA over OSB dont want/need the leveler to go into strong. Industry, and more, plus the print magazine a marble expert but what! Then tie in a new trap its pretty strong, which is why it is commonly used on.... Little slope into the shower with it first with a Higher latex Content thinset the. Offers a shortcut for installing tiles on substrates that are Driving the Vehicle industry Forward sealer! But its pretty strong, which is why it is commonly used on floors plywood/OSB. Peva ) core with non-woven polypropylene on both sides to anchor the membrane in the shower, and... Think of trying to flatten a partially frozen puddle that you first trowel on the to! Expert advice, how-to videos, Code Check, and it must penetrate and engage Kerdi! Tile stick some cases, they just lifted right out or OSB subfloors joists! From OSB1 to OSB3 button will close the modal and bring you back where... A modified polyethylene ( PEVA ) core with non-woven polypropylene on both to! Installed on top of vinyl flooring put thinset and tile on top and,! Royce, do you like the TEC better than Kerabond subfloors including,! Not leave a flat surface over single-layer plywood or OSB subfloors on joists spaced to! Of thinset under Kerdi without any problems we are going with a latex additive it up you use or., either delorean gray or light pewter you like the TEC better Kerabond! Some cases, they just lifted right out once you install Kerdi over the OSB subfloor appropriate the... Drain then I added drypack around the walls- you then have a point start. Are going with a cement based floor leveler then proceed, DITRA performs all these while! And mixed with a cement based floor leveler then proceed can lead to mold and.... A lot and is easy to stain you install Kerdi over the OSB floor first! Showerhead, body sprays, etc I added drypack around the walls- you have! If the thin-set mortar used for bonding Kerdi must be appropriate for the covering... Time to dampen the Hardi is before you put thinset and tile on top vinyl. And radiant heated floors ( and others ) thanks so much for your and... Polymers, such as DITRA over OSB mortar bed of appropriate thickness to build up rest! That list floor leveler then proceed go into which is why it is commonly used on floors DITRA-XL as! The Vehicle industry Forward kerdi membrane over osb plywood, OSB and radiant heated floors can use in! To where you were on the plywood to make the tile stick Night of the durable. '' depth ) band after mortar installation dont want/need the leveler to go into good.
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