How to install Schluter®-KERDI-SHOWER Trays

[@portergieske]

A tip that I just learned from my installation: In order to locate the drain and P trap pipe, if not already perfect, is to place the kerdi pan on the floor- the diameter of the their drain collars is 2 inches, so I used a 1 1/2" pvc pipe to mark the subfloor, and the structure below that, in my case. I then removed the pan, and had a template to work off of for moving my P trap to the proper spot.

[@denisoneill2117]

The "No Access Plumbing Demonstration with KERDI-DRAIN & KERDI-SHOWER Trays" video was removed and no longer available. Is there a new video link?

[@cliffmcleroy8168]

I think what is missing from this video as well as many others and the documentation, is what is the minimum hole size required for the drain. I made a totally stupid newbie DIY mistake of taking the drain out of the box, measuring the pipe O.D., what happens to be around 2.5", and proceeding to purchase a 3" hole saw. I neglected the shoulder of the drain, which has a considerably larger diameter. The videos state to not make the hole over 5", but neglects to state the minimum diameter required. With some calipers I was able to determine that the shoulder diameter is about 4.375". So after I mortared the plywood flooring and set the pan in place, I had the unpleasant surprise of realizing the drain did not go all the way in due to the 4.375" shoulder. After the fact I did find find the template provided but it was too late. Turns out the template measures 4.625". So if you're new to this, a 4.5: hole saw should be the minimum size required, just make sure you center it well. If you want more wiggle room, but a 5" hole saw.

[@SCWW]

it says right here in the video to use the template provided for a 5" hole. kzbin.info/www/bejne/eJe4o3p8aMSco8U

[@cliffmcleroy8168]

@@SCWW It says 5" maximum, which implies that there's a range. It's confirmed with the template which is 4.625, and the actual part is 4.375

[@jeanniejohnson5492]

He did specifically so 5" but to someone doing something like this for first time, I would have done something wrong, just because, why make it easy on myself and do it right!!

[@debilthomes501]

I was just about ready to make that very same mistake! Glad I read this.

[@molillaney7286]

Noticed the same thing!, only reason I came to rewatch the video and your comment came right up… perfect timing . I’ll probably just put a 5” hole and call it a day

[@jbrian53]

I got ahead of myself and used the 1/8 x 1/8 trowel to set the shower tray. The subfloor is 100% level with no imperfections, and I walked on it (with cardboard protection) so I feel like the pan made good contact with the all-set. The tray is surrounded on all sides by the existing walls and door width curb, and all-set was pushed into the small gap around the perimeter as the kerdi band was installed. So, no lateral movement of the tray is possible and the tray seems effectively locked into place. Everything else about the installation went smooth and I'm going to water test tomorrow. I'm hoping if that's the one mistake I made, then I can sleep at night. Your videos were helpful.

[@schlutersystems1]

Glad the videos were helpful! Let us know how the shower turns out!

[@jbrian53]

@@schlutersystems1 What problems would I look out for after using the 1/8 x 1/8 trowel for the all set under the shower tray? In my application the tray is surrounded on all four sides by walls. The curb is also stacked 2x4s fastened to the floor. Lateral movement isn't possible. If I don't feel any vertical movement/deflection in the tray then I should be good, I hope.

[@schlutersystems1]

Hi! If you feel the tray was supported enough with the amount of thin-set used, you should be okay. Make sure it is solid and does not "give" or provide low sports or anything like that before tiling, so you can make minor adjustments, if needed, when installing the tile. Hope that helps!

[@jbrian53]

@@schlutersystems1 Thanks for the follow up. That makes sense. I spread a consistent (although thin) later of thin set for the tray, but if there are any voids the tray could 'give' a bit towards the floor in that spot. Now that the thin set is dry I'll walk all over it (with puzzle mat protection) to ensure any 'give' happens before tiling. I haven't noticed any problems after crawling around on it while installing the kerdi band/corners.

[@schlutersystems1]

Welcome! That's good news. Let us know!

[@GatorShawn]

Every time he says Schluter, I think of Dwight from the Office. Love this.

[@schlutersystems1]

Love Dwight :)

[@crittersintheyard3993]

is it trimmable? also I'm surprised that it's applied right on top of the plywood floor...very cool and good to know

[@schlutersystems1]

Hi Mary, yes, our shower trays can be cut down to size. Here's a link to our video to show you how... kzbin.info/www/bejne/Z6DHlYKoiqmnmrc Hope this helps!

[@LLKoolJosh]

Can I use a 4 3/4” hole saw to cut the hole? The hole template diameter is 1/16” smaller than 4 3/4”.

[@schlutersystems1]

Yep--that would be fine!

[@rogsolaris7411]

I am looking at installing a shower pan. And related subfloor or under layer prep products for that. Are these bases used primarily in preparation for installing a tile floor? Or for installing a shower pan? If I want to install a shower pan, would I use a product like this for the base underneath? Or are they two separate methods? (shower base + tile OR shower pan?)

[@schlutersystems1]

Hi there, our shower trays are for tile installations and can go over typical substrates. The substrate must be clean, even, and load bearing. Any leveling must be done prior to shower tray installation. This would be used in conjunction with Kerdi on the wall, which is a waterproofing membrane. You are welcome to give our Product Support team a call if you'd like to discuss your project in a bit more detail! 888-472-4588

[@mscottsimon]

I watched a YT video that installed this tray but used a roofing felt as the first layer in contact with the subfloor. The reason seemed to be so the subfloor doesn't leech the water from the thinset. Is using felt under the tray supported by Schluter? Thanks and great videos.

[@schlutersystems1]

Hi Scott, you should NOT use roofing felt or similar under the tray. The tray is installed directly to the subfloor with Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or an unmodified thin-set mortar. No need to worry about the bond weakening due to the substrate absorbing any moisture from the thin-set. The thin-set is there mostly for support, rather than to keep the tray in place. Hope this helps, please feel free to reach out to our Product Support team if you'd like to discuss your project in more detail (but no roofing felt allowed 😊) 800-472-4588 (US) or 800-667-8746 (Canada). Thanks!

[@joshsyers1847]

@schlutersystems1 When installing both Kerdi board and Kerdi pan, can you install the Kerdi board on top of the pan?

[@schlutersystems1]

Hi Josh! Yes, you can!

[@mihailiviu4026]

Can OSB be used as a subfloor for a shower tray? What are the acceptable subfloors for the installation? Thank you

[@schlutersystems1]

Hello! OSB, plywood or concrete can be used under the KERDI prefabricated shower tray. It must be clean, even, and load bearing. Any leveling of the subfloor must be done prior to installing the shower tray. For more detail, you can look at the Shower System Installation handbook: sccpublic.s3-external-1.amazonaws.com/sys-master/images/h0a/h96/9422837121054/Shower%20System%20Installation%20Handbook.pdf

[@SF-dh7mc]

If I’m going to install glass shower doors, do I need to install the curb edges?

[@schlutersystems1]

Hi there! Would be best to contact our product support team. They will be able to request more details on your project and be able to assist you! You can reach them at 800-472-4588 (US) or 800-667-8746 (CA). Thanks!

[@dross52606]

Is there a video on installing the pan over the drain? It says on the instructions you can do so

[@schlutersystems1]

Hi there, this is our No-Access installation ... the principle is the same, it shows how the drain goes in before the drain. Hope this helps! kzbin.info/www/bejne/q169en-PfriYjposi=RvKcU6a8blU9LUlI

[@juniorg5084]

Hello there. My floor is a half inch off at its lowest point from the highest. Unfortunately I noticed this after I installed the pan. Any advice. It does not feel bad when stepping on it. Just curious what could happen.? Or what can I do now?

[@schlutersystems1]

Hi there! A live conversation would be better here. Can you give a call to our product support team? They will be able to guide you. You can reach them at 888-472-4588 (US) or 800-667-8746 (CA) Thanks 🍊

[@pdono1]

Do I have to have drywall behind the Kerdi walls? I am doing a project now, and the walls only have s2x4 studs and no there wall covering.

[@schlutersystems1]

Hi Patrick! You will need a solid backing of some sort to withhold the membrane and tile - gypsum wallboard, cementitious backer unit, fiber-cement backerboard, fiber-reinforced water-resistant gypsum backerboard, coated glass mat water-resistant gypsum backerboard, Portland cement mortar, concrete, or masonry. Another option would be to use KERDI-BOARD. These are multifunctional, waterproof building panels that are made for tile. Here's some info on them: www.schluter.com/schluter-us/en_US/Building-Panels/KERDI-BOARD-Panels/Schluter%C2%AE-KERDI-BOARD/p/KERDI_BOARD Also including a link to our Shower Handbook. This should cover everything you need: sccpublic.s3-external-1.amazonaws.com/sys-master/images/hd7/h3e/9080696930334/Shower%20System%20Installation%20Handbook.pdf Also, our customer service teams are here to help! US 800-472-4588 CA 800-667-8746

[@paigejohnsonjones7990]

If my shower has three walls, is it recommended to install the shower pan before or after the third wall is framed in?

[@schlutersystems1]

Hi Paige! It's probably better to install the tray after all of the walls are in, as you will be sure of your finished dimensions that way and there would be less of a chance of causing damage, but you could really do it either way, if you're careful and plan ahead. Hope this helps!

[@MistAtsiM]

Are the prefabricated kurbs same density as the thick panelsade for walls? Anotherwords, can a "slim" curb be built using those 2" panels?

[@schlutersystems1]

Hi there, Yes, you can use multiple layers of KERDI-BOARD to build a curb. See this video for details: kzbin.info/www/bejne/fJu5dHyEqdeNlcU You can also trim down the KERDI-CURB. Please see this video for details: kzbin.info/www/bejne/Z6DHlYKoiqmnmrc. Hope this helps!

[@13alejandre]

To lay the shower pan you can use their (modified) thinsets or you can use an unmodified thinset (different brand)? So you can use either or? What about a modified thinset of a different brand?

[@schlutersystems1]

Hey, You can install the tray with any Schluter thin-set or another unmodified thin-set. The reason you can use Schluter-Systems’ modified thin-set mortars is because they have been specifically formulated to set and gain strength, even when sandwiched between the tray and the subfloor or impervious materials, such as tile and our membranes. Other latex-modified mortars must dry for the polymers to coalesce and form a hard film in order to gain strength. When sandwiched between two impervious materials or the tray and the subfloor, extended cure times could be required, producing unpredictable results.

[@ArtOfTheWeld]

what if my shower is longer than the pre made trays , would I have to add a piece of tray and join the seam together with the membrane?

[@schlutersystems1]

Hi Cliff, here's a video on how to extend trays using dry-pack mortar: kzbin.info/www/bejne/Z6DHlYKoiqmnmrc You are also welcome to call our customer service team at: 800-472-4588 (US) 800-667-8746 (CA) Hope this helps!

[@ef2967]

One thing not mentioned is, when using this system you cant use small mosaic tile on the pan, they need to be a certain size or the weight distribution from stepping on it will crush the foam.

[@schlutersystems1]

The 2" x 2" tile rule is for our DITRA membranes. Our shower trays don't have this minimum tile size requirement.

[@Endang3red]

In another video it said you could use foam boards to raise the shower tray to fit the drain adapter kit. I can't find any retailer of just high strength foam boards that meet the 80psi specification. Where do I obtain these foam boards to use as underlayment for the tray?

[@schlutersystems1]

Hi! If you can't find a foam board that will work, you can also use tile backerboard, water-resistant gypsum backerboard, or similar. Hope that helps!

[@simaharpak3872]

Why do you install walls first and then the floor? Isn’t better to install floor first?

[@schlutersystems1]

Hi there! You can do either or, as long as there is an overlap of 2'' at every seam and connection! It's really a matter of personal preference. Hope that helps!

[@GG3-w7d]

I noticed the screws at the bottom of the Kerdi Board weren't thin set...is this because the shower tray and kerdi band go over these screws?

[@schlutersystems1]

Good eye! Correct, they get covered with thin-set and Kerdi-Band at the tray-to-wall connection, so no need to use thin-set and patches separately.

[@ceeIoc]

Can you install the shower pan first and then the wall boards on top of the pan?

[@schlutersystems1]

Hi Ceeloc, Yes. Just keep in mind that this will change the overall dimensions of your finished shower. Looks like you have a few questions, Ceeloc, I really recommend you call our Product Support team so you can have a more in-depth conversation about your unique project to be sure we have all the details and can lead you in the right direction. 800-472-4588

[@ryanjames2938]

Can you put the tray down directly on concrete? Or do you need to have a wood subfloor?

[@schlutersystems1]

Hi Ryan, Yes, you can install the tray directly over concrete as well.

[@eduardoduka640]

So no prep for wood before thinset?

[@schlutersystems1]

Yes there is - starting at 1:37 we state that "the substrate must be clean, even, load bearing, and level" and we show that you use a damp sponge to moisten the wood prior to applying the thin-set. Thanks! 🍊

[@nevillefern]

Sorry. I am a rookie. How does the water drain? Seems like the board lays flat and does not slope towards the drain. Any video on how this is achieved using this system?

[@schlutersystems1]

Hi Neville, our shower trays are pre-sloped to the drain, allowing the water to drain. 🙂

[@fransmith2415]

Is there a video to install LTS tray for curbless shower?

[@schlutersystems1]

Hi there! We don't have that specific video, however, we do have a video on installing shower trays for curbless showers: kzbin.info/www/bejne/hZbbdZatj7CpocU Also including a link to our Shower Installation Handbook: sccpublic.s3-external-1.amazonaws.com/sys-master/images/h14/hb1/9346696609822/Shower%20System%20Installation%20Handbook.pdf You are welcome to call our Customer Service team for more support: 800-472-4588 (US) 800-667-8746 (CA) Hope this helps!

[@jeanvmorin4201]

As a bathtub replacement, how do you trim an offset drain tray (38"x60") to fit my current footprint of 31" x57" in order to ensure that the first row of tiles are at the same height.

[@schlutersystems1]

Hi Jean! It would be best if you can contact our Customer Service teams as we would need more details to be able to guide you ! They will be able to get more info and guide you on how to trim your shower tray! You can reach them at 800-472-4588 (US) or 800-667-8746 (CA). 🍊

[@ajlewis4562]

What is the minimum subfloor thickness required to support this shower base? Have a 100 year old home with diagnal 1/2" subfloor, would gluing and screwing additional 1/2" plywood overtop be enough?

[@schlutersystems1]

Hi AJ, With 16" o.c. joists, yes, that would be fine. Feel free to contact our customer support team if you need more info! US 800-472-4588 CA 800-667-8746

[@mr.e7022]

New install over new Advantec subfloor. The Advantec subfloor feels a bit waxy. Must be a special coating they use to repel water. What mortar do I use to set the tray down? Also do I need to bond the kerdi wall boards to the tray using kerdi fix?

[@schlutersystems1]

Hello Mr E! The tray can be installed with Schluter SET, ALL-SET, FAST-SET, or an unmodified thin-set mortar. The KERDI-BOARD does not need to be bonded to the tray with KERDI-FIX. You will use the KERDI-BAND with thin-set over the tray to KERDI-BOARD connection to waterproof it. Hope this helps!

[@charleskempf3963]

I saw elsewhere that the pre formed tray for the floor you can't set tile with river rock style tiles ...is that correct? The tiles are 12 "x 12" but the rocks are not solid.

[@schlutersystems1]

Hi Charles. You actually can use river rock style tiles on the tray. There is no minimum tile size requirement, however, if small mosaic tiles are to be used and exposed to heavy or concentrated loads (e.g. wheel chairs) and there is a concern about weight distribution, that's when a mortar bed is recommended. The river rock style tiles must be fully supported under all “edges” with thin-set mortar. These tile types sometimes require a relatively thick bond coat to ensure proper coverage and bond to the shower base. 12 "x 12" should be fine if following this method. Hope this helps!

[@denisman1631]

Question:on this video u guys said to use an UNMODIFIED Tinset,for shower tray.But when I looked at the installation book it said Clear that we need to use a Modified tinset ANSI 118.1 and after that for tile installation an UNMODIFIED tinset.Please let me know which is the Right way.Thank you

[@schlutersystems1]

Hello Denis, the Schluter®-Shower System Installation Handbook states to use Schluter SET®, ALL-SET®, FAST-SET®, or an unmodified thin-set mortar to install the shower tray. This is correct. Yes, you would use the same for the rest of the shower installation as well. Hope this helps, please feel free to call our Product Support team if you'd like more help with your specific project. Thanks! 800-472-4588 (US) or 800-667-8746 (Canada).

[@thehangardesigns]

Do you have a video showing the installation of the tray with the drain already bonded in place? If my p trap is already in place, could I install the drain on top of the tray like in this video, provided I measure the connector PVC correctly?

[@schlutersystems1]

Hi Daniel, mind giving out Product Support team a call? 800-472-4588 (US) or 800-667-8746 (CA). Thanks!

[@lliaolsen728]

What about linear drains, is there a premade option?

[@schlutersystems1]

For sure! Here's a demonstration showing how to install a Kerdi-Line drain in our prefabricated trays. kzbin.info/www/bejne/nnaagGaYaM2daM0

[@mitty2575]

I can’t seem to find that trowel with those measurements from the Schulter brand

[@schlutersystems1]

Hi there, this isn't one of the trowels that we offer, but should be easily sourced at your local big box store. Hope this helps!

[@tobrien973]

Can I level the subfloor with thinset? Only need to adjust about a 1/4-3/8"

[@schlutersystems1]

Hi there, No, thin-set mortar should not be used to level the substrate. A self leveler or a cementitious patching product are the correct options to choose from. Here is a helpful article on this subject: "www.ceramictilefoundation.org/blog/is-it-patch-or-thin-set#:~:text=Using%20thin%20set%20to%20fill,flatten%20the%20floor%20or%20wall.

[@paulallen-01]

My shower opening is 33” X 60”. Can the 38” X 60” be cut down to 33 inches wide?

[@schlutersystems1]

Hi Paul, Yes. The KERDI-SHOWER- T/-TS/-TT trays can be cut to size to fit various applications. Ideally, the tray should be cut by equal amounts on all four sides to ensure a consistent height of the first course of wall tile. However, slight differences can typically be made up with thin-set mortar when setting the floor tile. Here's a quick video on cutting shower substrates: kzbin.info/www/bejne/Z6DHlYKoiqmnmrc

[@christopherbrown222]

What size tray would you suggest if my shower base is roughly 40x60, but the existing right side point drain is 19" from right wall, and 19" on center from wall to curb? Unlike the prefabricated one you have where the right side drain is 6" off the wall?

[@schlutersystems1]

Hi Christopher! We recommend you reach out to our Customer Service team at 800-667-8746 (US) or 800-667-8746 (Canada). They'll be able to suggest the right tray for your needs. Thanks!

[@mathalwaysii]

I'm reading from the unmodified thinset bag instructions that it is applied to concrete, not wood. The instructions here is to apply it on subfloor substrate and video shows plywood. To verify, so it's ok to apply unmodified thinset to plywood?

[@schlutersystems1]

Hi Esther! Under the shower tray, yes, it is okay to use unmodified thin-set over plywood. The thin-set mortar used in this step is to bed and support the tray only, so there is no concern about the bond here. Hope this helps!

[@pulper11]

I’m building a bench using 2” kerdi board. Do I install bench first on subfloor and then cut the tray around the bench, or put tray down first and attach bench to the top of the tray? Thanks.

[@schlutersystems1]

Hi there! You put the bench down first on the flat subfloor and then install the sloped tray around it. Hope this helps!

[@dulcesvillalobos5200]

Vv

[@stephaniea3688]

Hello, can anyone tell me what to do if my shower area is bigger then the size of the shower pan? Do i buy 2 ?

[@schlutersystems1]

Hi Stephanie! It really depends on the layout of your project. Would be best to contact our Customer Service Team; they’ll be able to request more information on the specifics of your project to give you the most accurate answer possible. You can reach them at 800-472-4588 (US) or 800-667-8746 (CA). Thanks🍊

[@ubacow7109]

Are all the shower trays pre-sloped?

[@schlutersystems1]

Hi there, Yes, all of our shower trays are flat on the bottom and sloped on the top. You can contact customer service if you need specific slope information for a specific tray. Hope this helps!

[@miguelmeza3076]

Does this product come pre-sloped towards the drain?

[@schlutersystems1]

All of our shower trays have an integrated slope :)

[@Lugenfabrik]

I’m planning to install the Ditra membrane across the entire bathroom floor, and then install the Schluter shower tray/curbs on TOP of the Ditra. I assume this is ok, can you confirm? FYI I initially planned to install the tray first, then the Ditra around it. But I just realized it will be easier to just install Ditra throughout first. Plus I think this would give me extra protection under the shower.

[@schlutersystems1]

Hi there! The tray and curbs should be installed directly to the subfloor and the DITRA should be installed around them. The tray is already waterproof on top and the curbs are also waterproof. You just need KERDI-BAND for waterproofing all of the connections to the walls, curb and DITRA, etc. This video shows how complete waterproofing is achieved: kzbin.info/www/bejne/b5mzfoqZZ5eigZo. The link goes directly to the section where the curb to DITRA connection is waterproofed. Hope this helps!

[@Lugenfabrik]

@@schlutersystems1 thank you.

[@schlutersystems1]

Pleasure, good luck with the project!

[@curt32807]

Can penny tile be installed on the Kerdi shower pans?

[@schlutersystems1]

Hi Curt, yes it can!

[@patrickcasteel3445]

why would ditra on plywood use modified thin-set, but this on plywood needs unmodified?

[@schlutersystems1]

Hi Patrick! The main purpose of the thin-set is for support of the tray. Unmodified thin-set can be used to install the Schluter shower tray because the purpose of the thin-set is to embed and fully support the tray. The bond is not a concern here because the tray doesn't have anywhere to move to. If you have any further questions, please feel free to reach out to our Product Support Team at 1-800-472-4588 (USA) or 1-800-667-8746 (CAN). Hope this helps!

[@TheNewports]

I am looking to convert a preexisting shower/ tub into a Kerdi shower base and walls. Do you have a video or demonstration showing how I handle the installation of the drain in this type of instance?

[@schlutersystems1]

Hi Eric, thanks for your question! We do not have a video that covers exact details on your project at this time. We do have a few videos that cover installing the drain without direct access, perhaps those could help with your project? kzbin.info/www/bejne/mqiYh32ZodSleLs

[@Blackcircle0806]

I was wondering do you have a tray that can be used for long linear drains?

[@schlutersystems1]

Hi Alex, we do! Here's a link to our shower trays for our Kerdi-Line linear drains: www.schluter.com/schluter-us/en_US/schluter-us/en_US/Shower-System/Prefabricated-Substrates/Schluter%C2%AE-KERDI-SHOWER-LT--LTS/p/KERDI_SHOWER-L-LS?facets=false

[@willyum1208]

could you not install the shower tray first, band the seams and corners then put the wall membrane over the kerdi band? Overlapping from the top down is always a better approach when dealing with water.

[@schlutersystems1]

Hi Will, Yes, you could do that if you wanted. Either way is fine. The sequence of membrane installation can vary provided that a minimum 2" (50 mm) overlap is maintained at all joints and proper connection to the KERDI-DRAIN is established. Top-over-bottom or shingle lapping of the the membrane is not actually necessary for waterproofing with KERDI and KERDI-BAND. Hope this helps!

[@MegilUrgand]

My question is what should the height be of the Kerdi drain flange above a concrete floor so that it fits properly (height wise) when the Schluter shower tray is installed? This is for a remodel where I already removed an existing 40 yr old small shower. I plan to remove the old drain and cut out the 2 in in diameter PVC drain pipe using an inner saw blade then install the Kerdi drain flange.

[@schlutersystems1]

Hi Carl, it all depends down to the tray that is used. Please feel free to contact our Product Support team to discuss! US: 800-472-4588 CA: 800-667-8746

[@johnmacioce7293]

What if you forget to place the circular Kerdi band around the drain as the last step.. is my shower ruined..?

[@schlutersystems1]

Hi John, The KERDI collar is part of our warranty requirements. Please give our customer support team a call and they can discuss this with you in more detail. US 800-472-4588 CA 800-667-8746 Thanks

[@alainmelchor2185]

What if my toddler son broke off the white foam where the drain sits?

[@schlutersystems1]

Hi Alain, can you give our Product Support team a call to discuss? 800-472-4588 (US) or 800-667-8746 (Canada). They will be able to advise. Thanks!

[@AngelicaS-c2i]

how about slope in this pan ? there is slope?

[@schlutersystems1]

Hi there! Yes there is a slope in our pre-fabricated shower trays.

[@Jeziorski7]

why is it unmodified on plywood if ditra is modified on plywood?

[@schlutersystems1]

Schluter SET®, ALL-SET®, FAST-SET®, or an unmodified thin-set mortar can be used to install Schluter shower trays because the purpose of the thin-set is to embed and fully support the tray, not necessarily to bond it. There is no concern for bond as the tray wouldn't have anywhere to go. The DITRA on the other hand needs to be bonded well for the uncoupling properties to function properly. Hope that helps!

[@glennfixes8517]

Can anyone explain why the offset or left drain on pre-sloped shower tray has the drain hole centered at 9" off the wall instead of the standard 14-12". Hard to plumb a basement drain once the concrete floor and drain has already been roughed in at the standard 12".

[@schlutersystems1]

Hi Glenn, We based it off the standard tub drain location at around 8.5-9". The boxout in the concrete should typically be around 12", which leaves room for adjustment. Hope that helps. Please give our Product Support team a call to discuss your project in a bit more detail if you would like! Thanks.

[@highdough2712]

I’m about to install this system and was wondering if I could install the foam boards on top of the base (so install the base first and then the walls)?

[@schlutersystems1]

Hi there, sure, that’s fine. It will just change the size of your shower a little. Just make sure to flash the seam with KERDI-BAND and follow the rest of the instructions in the Shower System Installation Handbook and you’ll be all set. Hope this helps! Please feel free to give our Product Support team a call directly if you'd like to discuss your project in more detail. 800-472-4588 (US) or 800-667-8746 (Canada). Thanks.

[@highdough2712]

@@schlutersystems1 Thanks for your help!

[@schlutersystems1]

Any time!

[@hockeyman1]

So is the base already sloped ?

[@schlutersystems1]

Hi there! Yes, our Schluter®-KERDI-SHOWER-T/-TS/-TT are prefabricated sloped shower trays!

[@markpearce9200]

Can I tile directly on top of the curbless shower tray? Or do I need to put DITRA on top first?

[@schlutersystems1]

Tile can be set directly on to our KERDI-SHOWER Trays. No need to install DITRA on our pre-fabricated trays. 🙂

[@markpearce9200]

@@schlutersystems1 Great! Thanks. I can tile right away then without any additional membrane

[@schlutersystems1]

Our trays now come with Kerdi already applied... there are however some trays that don't have the Kerdi applied... if this is the case, you would need to apply the Kerdi. Most stores now sell the laminated trays tho... this is what they should look like: www.schluter.com/schluter-us/en_US/Shower-System/Prefabricated-Substrates/Schluter%C2%AE-KERDI-SHOWER-T--TS--TT/p/KERDI_SHOWER-T-TS-TT

[@schlutersystems1]

So if your tray is orange, you're all set. If your tray is white, you need to apply Kerdi before tiling. Enjoy!

[@emilyrobinson6219]

Can I use a different trowel size for installing the schluter tray (1/4 x 3/16 v notch, or 1/2 x 1/2 square notch) so that I don’t need to buy another trowel just for the tray?

[@schlutersystems1]

Hi Emily, it is recommended to use the proper size trowel when installing the tray. In a pinch you could be able to use the 1/2" x 1/2" at a less than 45 degree angle and end up with the right amount of thin-set. As we mention in the Shower System Installation Handbook, make sure to "Gently lift the underside of the tray to check coverage, then replace the cardboard and re-embed the tray" prior continuing on with your installation. But again, the right tool for the job is always the better choice. Hope this helps!

[@3007peter]

what size shower base do i need for my area which is 55" x 30" with drain in the center (27.50" x 15 ")

[@schlutersystems1]

Hi Peter, we would suggest using the 60" x 38" tray and cutting it down 2.5" on each end and 4" on each side. If you contact Customer Support, they will be able to give you a few more simple instructions for making this modification come out just right. 800-472-4588 (US) or 800-667-8746 (Canada). Hope this helps!

[@cwb124]

I can't really figure out the difference between this install and the video where you don't have access to the plumbing below where the drain is installed first. In both cases you are glueing the drain into the pipe below. So why bother breaking out the foam and doing the drain install and then the pan, when it seems exactly the same to do it after the pan is installed, without breaking the white foam.

[@schlutersystems1]

Hi Charlie, Sorry for the delay! The No-access to Plumbing video primarily targets the situations where a plumber will be installing the drain at a different time than the tray. Otherwise, the tray can be installed at the same time the drain is glued in. Hope this makes sense!

[@mscottsimon]

@@schlutersystems1 I have this same question but want to be sure I understand. You are saying the drain can be installed as in this video (after base) if a plumber is available. The "no access to plumbing" video is really a convenience so the plumber doesn't have to return? Asking because it looks like the drain is easily installed after the base even with no access to plumbing from below.

[@maryproveaux9200]

does the collar come with the tray or with the drain?

[@schlutersystems1]

Good question! The KERDI collar for sealing the drain-to-tray connection comes with the tray.

[@maryproveaux9200]

@@schlutersystems1 That is GREAT news! The tray, tileable drain and drain flange is in my backset online at the home depot right now! I haven't checked out yet because there are videos that suggest the thinset is wet under this system so I'm looking for an additional waterproofing paint or something, unfortunately.

[@schlutersystems1]

Hi Mary, We can’t comment on the specific video you watched, and it’s always difficult to tell from a video whether they have been done to industry specifications and manufacturer instructions, and what other factors in the testing environment could have affected the results. Schluter products and systems have been subjected to, and passed, all required standards and testing in multiple countries including the United States and Canada. It's important that testing be carried out by independent, unbiased, third-party laboratories that are recognized and approved by the industry, and this is how Schluter's certifications are achieved. Laboratory testing and field experience over decades has proven that thin-set seams with the KERDI membrane provide effective, reliable waterproofing for tiled showers. And we stand behind that - when installed in accordance to our Shower System Installation Handbook, your installation is fully covered by our comprehensive warranty. If you have questions, or would like to speak to our Product Support team more specifically about any concerns you may have, please reach out right here: 800-472-4588 (US) or 800-667-8746 (Canada). Best of luck with your project!

[@emmanuelespinoza8950]

Do you have to glue the flange on pvc?

[@schlutersystems1]

Hi Emmanuel, the flange is applied using thinset mortar. For more, please see our technical handbook here: sccpublic.s3-external-1.amazonaws.com/sys-master/images/hd1/h93/9007208038430/Shower%20System%20Installation%20Handbook.pdf Or you are welcome to contact our Product Support team at: US: 800-472-4588 CA: 800-667-8746

[@John-bj3un]

How thick is the mortar under the pan after setting the pan in place?

[@schlutersystems1]

Hi John, Sorry for the delay! The thin-set under the tray will be approximately 1/16" to 1/18" thick. 😊

[@KielerInKanada]

Could you please clarify the perimeter thickness of the "Off-Center" 38x60 Shower Tray (KST965/1525S)? The Shower Trays brochure indicates 1-1/2" while the CAD drawing sheet "KERDI-SHOWER-T-TS-TT.PDF" states 1-1/8". My plan is to recess this tray but I need to know the exact thickness of the perimeter.

[@schlutersystems1]

Hi Mike, looks like you're right... there is an error in the Shower Tray brochure... since we have made the trays thinner the correct number is 1 1/8" thick. Sorry for the confusion, and we will correct this on our side!

[@ww-town7973]

I was waiting for the narrator to say “after setting the pad. Do a oddly weird dance on it”

[@schlutersystems1]

Haha! You know that works too!

[@zspeed3]

How much time do you have to wait to install tile?

[@schlutersystems1]

Hi Zia! The tile can be installed over the KERDI membrane immediately. No need to wait!

[@ceeIoc]

with no access, why cant you just lengthen the drain to install after the pan?

[@schlutersystems1]

Hi there, that would be an option as long as the measurements are accurate with the finished assembly. Generally, it's best to install the center of the tray (or the whole thing if tiling soon) when the drain is being installed so any height adjustments can be made during install, if needed. If you'd like to discuss more, please give our Product Support team a call, this type of question is easier when discussed verbally.... 800-472-4588. Thanks!

[@Lifehappens1]

Such a brilliant video 👌🏻

[@danpan4425]

Do you have to install the walls first?

[@nvdtile3643]

Yes

[@nvdtile3643]

Do drywall first then the floor then the schluter to drywall. Over lap schluter to floor piece

[@danpan4425]

If I do the wall first, I have to cut the base

[@nvdtile3643]

@@danpan4425 that's ok to cut the base to fit perfect. Just make sure to cut evenly to fit the drain

[@nvdtile3643]

If you have any other questions I'll be glad to answer

[@samscott54]

great video

[@bluesdirt6555]

I used this system a few years ago and I’m finding that we’re getting depressions or low spots where we stand ? I used 1” round tiles and I’m only 160 lbs. ?

[@schlutersystems1]

Hi there, you are welcome to give our customer service a call here to discuss! US 800-472-4588 CA 800-667-8746

[@usagoca]

Why you guys didn't glue the drain into the pipe below?

[@schlutersystems1]

Hi Pascal, as long as there is access to the plumbing below, the drain usually gets glued to the pipe after it is installed on the tray. If there is not access to the plumbing below, the drain will be glued to the pipe at the same time it is installed onto the tray. Hope that helps!

[@usagoca]

@@schlutersystems1I watched this video and I didn't see you guys glue the pipe so I did the same thing. Is there anyway to fix it?

[@schlutersystems1]

Hi Pascal, can you give our Product Support team a call, so they can discuss your project with you in more detail and advise? 800-472-4588 (US) or 800-667-8746 (Canada). Thanks.

[@INFINITEMUSICSOURCETorrance]

I'm confused by whether I use modified or unmodified thinset over plywood. The website says modified but this video says unmodified. Can anyone answer that? I used the schluter All Set for the tray over plywood but it doesn't say it's modified. Want to make sure I use the right one for the membrane. Thank you!

[@schlutersystems1]

Hi there! You can use any Schluter thinset mortar (ALL-SET & FAST-SET are modified, SET is unmodified). If not using a Schluter mortar, please use unmodified. For additional questions, please feel free to contact our Product Support team! US: 800-427-4588 CA: 800-667-8746

[@INFINITEMUSICSOURCETorrance]

@@schlutersystems1 Thank you!

[@schlutersystems1]

Our pleasure!

[@ceeIoc]

can you trim the tray?

[@schlutersystems1]

Yes you can! Just be sure to respect the slope of the tray. Here's a quick video: kzbin.info/www/bejne/m2arg52Nm99-eNU

[@ceeIoc]

@@schlutersystems1 Ok thanks! One more question. I want to do a bathtub to shower conversion. What if the drain hole is bigger than the kerdi shower tray hole?

[@schlutersystems1]

The best way to resolve this would be to remove an appropriate amount of plywood/OSB subfloor, replace it with new plywood/OSB, and cut a new hole for the drain. Also, please be sure to follow all applicable building codes in your area! :)

[@ceeIoc]

@@schlutersystems1 Ok gotcha thanks! I hope its plywood and not concrete! lol

[@ryancurrie1332]

Interesting. Funny that they have the walls in cement board and already in Kerdi then install the the shower tray because all other instructions on this says the exact opposite.

[@schlutersystems1]

Hi Ryan! You can actually install the materials in any order you want, but in general, it's easiest to make sure you have a solid backing on the walls first, so you can install the tray right up to them. However, it really depends on your application and what works best for you. When in doubt, feel free to contact our customer service team and they can help you decide what works best for you. You can reach them at 800-472-4588 (US) or 800-667-8746 (CA). Hope that helps! 🍊

[@feng3625]

KERDI-SHOWER-TRAY 38" X 60" OFF CENTER one is fit my shower. But there is one problem, my drain hole is 17'' from the wall. Could I cut the end for 10'' then glue it into the front?

[@gbear67]

No. If your drain is 17” (on centre I assume) from a wall on a 38 inch wall then you are out if luck. If your drain is 17” from a 60” wall then you will have to fill in the opposite gap with mortar ensuring to pitch and level appropriately. You’ll need an extra kerdi band there or, ideally, use a wall sheet for the entire pan. I would move the drain.

[@robertdiaz5707]

can you install glass door on top of the kerdi curb or should you just use 2x4’s to hold the weight of the doors

[@schlutersystems1]

Hi Robert, yes, Schluter's Kerdi-Board curbs will support the weight of a glass door. No 2x4s required. Thanks!

[@choochoc]

it says to overlap all seams, but when they put the Kerdi Band between the tray and wall, they aren't overlapping with the Kerdi corner piece. Is this a mistake or is it ok for me NOT to overlap w/ the corners?

[@schlutersystems1]

I think it might just be difficult to see, but all seams must have a 2" overlap. :)

[@Dtileandremodeling]

Well done guys

[@gunslinga7077]

god damn i love this system lol

[@wilgonzalez4951]

Thinset over plywood is not the proper way looks good but thinset does not last directly over wood

[@yevgenikovelman3306]

You know they’ve been around for 20 years, seems ok so far

[@TallGuy6-9]

they have been around since 1987 i believe@@yevgenikovelman3306

[@cwb124]

Just wet the subfloor first so it doesn't pull the moisture out of the mortar and you should be good to go.

[@scottyindtw]

This video does not show how to properly install kurdi corners. If not properly installed, it will likely leak later on.

[@EllisNichols]

What would you do different?

[@shawnwarren3576]

Why in the world would you display a curbless shower transitioning to carpet?

[@schlutersystems1]

A carpet? Outside the shower tray is our DITRA uncoupling membrane, which goes beneath the tile to prevent cracked tile and grout. Was that what you mean? Maybe pre-tile it looks a bit like a waffle-y carpet 🙃

[@shawnwarren3576]

3:00-3:02

[@schlutersystems1]

Oh ok, I see! If the shower floor can not be recessed, to be able to have a curbless shower, the bathroom floor have to be raised. Therefore the bathroom floor might be higher at the door threshold; a sloped profile might be required. depending on the adjacent floor covering. Hope that helps!

[@alvaromendieta4290]

Like

[@davidnolan8153]

No need to draw the holesaw cut line. 99.9 % DIY’ERS wouldn’t even get close, The holesaw pilot bit determines cut, regardless of where you drew it . No need to put worthless information on the video!

[@roundaround2448]

Can't you just stick to how to install your product only and not spending more time on how to match floor level???

[@arthurrivera4230]

Hack no a lot work just like the old school way nop thanks I’ll keep doing it the old school way

[@justingadowski9419]

Have you ever actually installed one of these systems? This shit is so easy to install and twice as quick, you can cut it with your knife and it's 100% waterproof, with a lifetime warranty i believe. Cutting that cement board is real nasty stuff with cancer-causing agents in it. And their panels are 4x8 sheets that you can also cut with your utility knife. It would be stupid not to use this system. You save a day in installing which is where you save the most money. To do a typical shower floor you have to pre slope the floor install the rubber lining then have someone else come in and float in a sloped floor, and hope its nice and smooth with no dips or pockets and hope its slopped properly. With this system its already slopped perfectly with a perfect surface to put your tile on. If you install it properly its impossible for water to get underneath. The cost is almost as much as one of these kits. A conventional floor requires an experienced plumber to put in the floor drain and to pre slope the floor then install the rubber lining, thats a couple hrs of time in that, then a few more hours for a tile guy to mud the floor in, usually they have a helper who is mixing for them. Then the material cost which isnt alot. And then compare it to this system which would take you half hour at most, once you to do a couple of them you get better and quicker.

[@VersaVoicePodcast]

You must be kidding. You think it takes longer? LMAO! I had a professional do my shower and he couldn't make the pan slope correctly and after his 3rd try I fired him and re-did the shower myself PERFECTLY with this system and OMG this product is a life saver.

[@TopNotchTile]

Do you still use an axe to cut firewood .. and a horse and buggy to get to your jobs also ??

[@sbencic4147]

Agree Old school mortar bed and liner is bomb proof just not installer proof

[@david1132]

Gotta love these dip sh&$ videos as if you get an open shower. Lol

[@rainmaker3700]

Can the shower tray support small format tile or pebbles?

[@schlutersystems1]

Hi there! In general, yes. There is no minimum tile size requirement for the shower trays. However, if small mosaic tiles are to be used and exposed to heavy or concentrated loads (e.g. wheel chairs) and there is a concern about weight distribution, a mortar bed is recommended. A similar position is taken with pebble/river rock style tiles, which must be fully supported under all “edges” with thin-set mortar. These tile types sometimes require a relatively thick bond coat to ensure proper coverage and bond to the shower base. For more information, please contact our Product Support Team at 1-800-472-4588 (USA) or 1-800-667-8746 (CAN). Hope this helps!