Schluter®-KERDI-BOARD over Framing in Bathtub Surround Applications

#schluterkerdiboard #schlutershowersystems #schlutersystems
The KERDI-BOARD waterproof building panel combines substrate and waterproofing installation into one. KERDI-BOARD can be installed directly over the exposed wall framing.
Select this video to watch the installation of KERDI-BOARD over framing in a bathtub surround application.
For any questions you may have about this video and the installation of Schluter®-Systems products please call our customer service line:
Canada: 1-800-667-8746
U.S.A: 1-800-472-4588
For further information please visit our website:
www.schluter.com
Subscribe to our channel: / schlutersystems1
Facebook: / schlutersystems
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[@webdeveloper4742]

Do it right the first time and your confidence increases. No leaks and no bodged work.

[@payakadventures]

It would be wonderful if you would come out with some self adhesive patches to cover the screws and mortar could then be skimmed over.

[@schlutersystems1]

Thanks for the feedback! We'll forward this to our R&D department. :)

[@mrlariata9290]

I am 47 years old and when I was 16 I remember helping my friend and his dad put tile In a bathroom screwing osb to a wall, then adding chicken wire to the osb. We then put concrete on the wall and made sure it was perfectly flat. From my understanding that bathroom still stands today bone dry no leaks. All this red guard and Kerdi board was not available or used back in the day.

[@AJ-ds5gf]

I'm 201 years old and when I was 8 I remember helping my friend and his dad tie bamboo leaves to make a shower wall in a bathroom, tieing the leaves together to form a patchwork. We then draped that over a few peices of wooden branches that we'd chopped earlier to make sure we had a perfect enclosure. From my understanding that bathroom still had the original bamboo leaves. All this OSB, chicken wire and concrete was not available or used back in the day.

[@KingHarry1]

@@AJ-ds5gfhahahaha!

[@capncrunchwhistle5553]

Kit For Tub and Shower Walls sells for $455. Using 1/2" Hardiboard, thinset and Redguard will cost about $120.

[@lotshanuni1]

Red guard is like buying a ford and schluter is a Ferrari

[@abewilcox4560]

@@lotshanuni1 ya, a Ferrari that leaks.

[@rechitsapivo]

@@abewilcox4560 Funny that actual Ferrari leaks, too.

[@lonnietrout7245]

Schluter done right don't leak, the problem is to many guys out there want to do it fast and cheap and that don't work. Do it right you won't have a problem, I've been doing this for 35 years plus and have made a great livi g doing it right

[@frenchustube]

Very nice video. do you leave a space between the base of the Kerdi board for the wall and the lip of the tub flange or does it just rest on top of it ? Thank you!

[@schlutersystems1]

Hi there, when KERDI-BOARD is installed above the tub flange, apply KERDI-FIX to the tub flange and spread using a small notched trowel. Then install the KERDI-BOARD directly to the KERDI-FIX so it is resting on the lip of the tub flange. Please feel free to contact our Product Support team directly if you would like to discuss your project in more detail. 800-472-4588 (US) or 800-667-8746 (Canada). Thanks!

[@rechitsapivo]

Like the idea of Kerdiboard, but I would not build a knee wall out of it. Best to make a framed wall, then put Kerdi over that. Also the reason to use cement to patch the screws is because a self-adhesive glue patch would leave air pocket around the screw and that is bad for tile support.

[@schlutersystems1]

Hi there, Kerdi-Board is commonly used to build knee walls and partition walls. If interested, you can check out our video here: kzbin.info/www/bejne/bIPPfnmGlL6Vm6c

[@ceeIoc]

How do you seal with the band where it meets the drywall at the edges? Does the band extend past the kerdi board or does the edge of the band line up with the drywall line?

[@schlutersystems1]

Hi Ceeloc, KERDI-BAND and thin-set can be used to join the KERDI-BOARD and drywall or drywall mud and tape can be used there. Whichever you prefer or is easier for you is fine. Hope this helps.

[@KevinGalley-j1k]

Are you able to use the schluter "all-set" mortor instead of unmodified for bonding kerdi band to the board?

[@schlutersystems1]

Yes, you can use an unmodified thin-set or ALL-SET to bond KERDI-BAND over KERDI-BOARD.

[@jneil78]

Do you you have to do anything between the kerdiboard and the ceiling such as another piece of band?

[@schlutersystems1]

Hello! KERDI or KERDI-BOARD application on ceiling is optional for showers. If you are building a regular shower, you are not required to do anything specific for the wall/ceiling connection.

[@McFlysGarage]

I have a painted wall next to kerdi board. What do I need to do to ensure the all set will stick to the painted wall when I put kerdi and over the seam?

[@schlutersystems1]

Hi there! If it's latex paint, you can go right over it with ALL-SET. If it's not latex paint, you can use a latex primer or PRIMER-U before applying the ALL-SET.

[@jonathanbell9349]

Tile expert Sal Diblasi says to bring the kerdiboard to the tub deck to avoid movement and tile cracking. Who is right?

[@schlutersystems1]

Hi Jonathan! KERDI-BOARD can be installed directly to the tub deck or onto the flange. Either way is fine, as KERDI-BOARD is dimensionally stable. A movement joint such as DILEX-AS or DILEX-BWA could also be used to address movement. Hope this helps!

[@ceeIoc]

do you install kerdi board with a drill or impact driver?

[@brendanroach6504]

Hello, can the Kerdi band be taped, mudded and painted at the Kerdi to drywall transition? Or is there a recommended finish for that area? Thanks!

[@schlutersystems1]

Yes, you may mud and tape over the KERDI to Drywall connection.

[@KingMourya]

Thank you so much! Will this be the best board for salt water protection as well? Am trying to get a float tank ..

[@schlutersystems1]

Hi there! KERDI-BOARD has not been tested for salt water applications/protection, therefore, we don't recommend use in this application

[@davidh4538]

I can't find any info. regarding vapor barriers behind Kerdi board if the tub back wall is an exterior wall in a cold climate. Any recommendations?

[@schlutersystems1]

Hi David, Exterior walls generally have a vapor barrier in place already and it is fine to add the KERDI-BOARD on to the studs of the exterior wall as well. There is no concern with having the two vapor barriers. If you do not already have a vapor barrier on your exterior wall, you can discuss with a local codes office to find out if one is required. Hope this helps!

[@Oscaro9928]

Shouldn’t the board be over the tub lip and not on top of it?

[@schlutersystems1]

Either way is fine. KERDI-BOARD can be installed flush with the tub flange or over the tub flange leaving a minimum space of 1/4" (6 mm) between the board and the tub deck. Remember, when KERDI-BOARD is installed above the tub flange, apply KERDI-FIX to the tub flange and spread using a small notched trowel prior to installing KERDI-BAND.

[@JerzshoreXx]

This little kzbin.infoUgkxVoi3B4CB6Oygq1-vo4OTL1M_M5JkrXif tub works perfect in our 6 x 6 shower and is easy to get in and out. Also easy to drain.

[@Phormify]

Bold move at 3:20 to use a Sharpie to mark the KERDI-BOARD for that kneewall... while marking all over the brand new tub. 🤣 The line might be covered in this application, but typically it would probably be better to use a pencil or non-permanent marker of some sort. Details matter... especially if a pro is doing a job for a customer and has a reputation on the line. At the end of the job I'd hate to rely upon a thin bead of white caulk to hide permanent marker! 🖍 🛁

[@bneaclab1]

it is always recommended to use 'unmodified' thin set. Yet schluter thin sets (such as AllSet) for use with all kerdi products 'are modified'. I find this confusing.

[@schlutersystems1]

In general, latex-modified mortars dry very slowly through the open joints in the tile covering. Schluter’s modified thin-set mortars have been specifically formulated to set and gain strength in a time-frame that fits typical installation practice, even when sandwiched between Schluter membranes or boards and porcelain tile. So, developing our own setting materials has given us the ability to guarantee consistently positive results. You can check out the Thin-Set Facts page of the Shower Installation Handbook for complete details.

[@Tysonography]

What can "Other suitable sealant" be other then the $33 tube of kerdi fix?

[@schlutersystems1]

Hey Tyson, you can use a sealant that requires atmospheric moisture to cure... for example, a urethane sealant would be an option. Please give our Product Support Team a call if you'd like to discuss further options. 800-472-4588

[@jmowreader9555]

Tyson Sikaflex Construction Sealant has always worked well for me, and it’s far less expensive than the Schluter sealant.

[@fly4fun24]

I don't understand why they still recommend unmodified thin set. I've been using with modified thin set for ever.

[@tomatexelon]

There is a reason, I just forgot because I use what they recommend - The price is about the same.

[@AD-fd9vz]

There a video where they explain why but ill do a short version for you: They offer a warranty with unmodified thin set because they show consistent result all the time. They cant do the same with modified thin set because they dont know what in these product as they dont know how it will react to their product. So you could use modified thin set but dont expect them give you a warranty if it fail. For the difference in price i would definitively go with the unmodified.

[@gsmith5357]

You would think for the extreme cost of the system that you would get screws that won't break! Unless your framing out of balsa wood expect to break 30%of your screws.

[@robertaylor9218]

Call Schluter tech support and ask them if you can install the clips with GRK R-4 structural screws. A little overkill, but they won't break and are truly self drilling.

[@tabithabrousseau9699]

None of our screws broke when installing actually

[@chrisbottoms6396]

Hmm... I just used almost three boxes of Schluter screws on my surround, and didn't break a single one.

[@gsmith5357]

@@chrisbottoms6396 try screwing them into studs made 25 years ago. New lumber might as well be balsa wood these days. My point mainly was how ridiculous the price is for a "must use for warranty coverage". For the price they could use higher grade steel and still have a huge profit gain.

[@jdjoyner09]

awesome too bad you cant get any kerdi membrane!!!! nobody has it in stock hate using another brand but got to move on

[@maydanlex]

Thought the kerdi had to go over the bathtub flange...not just sit on it.

[@schlutersystems1]

Hi there, if there is a flange, the KERDI or KERDI-BAND will go over it. If there is not a flange, the KERDI or KERDI-BAND will just go to the wall/tub junction. Hope this helps.

[@hermes0623]

If someone trips and falls that is coming down. It's a foam knee wall. It has no structural strength

[@Proxtor]

Have you ever seen how strong it is? Mike Holmes build a corner seat with it and it held over 450 lbs when 2 guys stood on it. Its alot stronger than you would expect.

[@hermes0623]

Kevin Miles 2 guys stood on it. Do you see what you wrote. Do you know the difference between the stresses that standing on something and pushing on something would have. You can stand on 2 eggs vertically, you can not stand on them horizontally. I said fell over so the weight and the forsee would be pushing sideways and it would snap the foam. Foam is not strong that way. Especially the way he built it here.

[@hermes0623]

Kevin Miles you know it's not magic foam either. This company has gotten off using cheap ass foam with a waterproof coat. You can get the same results with poster board your kid uses for art projects and a waterproofing liquid. This foam is no stronger than packing peanuts

[@Proxtor]

@@hermes0623 kzbin.info/www/bejne/n3_bkK2Aarhjr5Y

[@46babaganoosh]

@@Proxtor They used 2x4's for support... and I'll bet they toed in a 2x4 across the centre where you can't see it.

[@oscarcerna687]

Were i can Bay. This materia in Massachusetts i need. One. Address

[@schlutersystems1]

Hi Oscar, you can find your local dealer on our Dealer Locator. Check it out here, and just enter your zip code to generate a list: www.schluter.com/schluter-us/en_US/store-finder

[@billblendick9780]

The down side of Schluter is the cost. Their distribution is like a pyramid scheme. Schluter sells to distributors who I turn sell to dealers. With this lineup of companies all making money, the end result is a very high priced product.

[@jasonkozey6918]

That's what I was thinking it would be. Same shit for cement

[@johnal4560]

Hi would i be able to use Redgurd on the schluter pan and kerdi ????

[@AD-fd9vz]

I did ask that question to their tech support and the answer was that Kerdi is a system and that you shouldn't mix system. If you go Kerdi, go full kerdi, if you go Redgard go full redgard but dont mixt both.

[@dloohuis5904]

$?

[@schlutersystems1]

Hi D Loohuis! Are you looking for pricing and availability? You can find our Price List on our website, under downloads. There all of the pricing will be at your fingertips! www.schluter.com/schluter-us/en_US/downloadfiles

[@trevordsouza9174]

Schluter products are overrated and overpriced. Also followed mixture procedure of their All set cement and found out that the wall membrane did not adhere to the mold resistant drywall consistently. I couldn't take a chance expecting this membrane to support wall tiles. Schluter warranty is only on paper. They squirm out of honoring their warranty by finding excuses. All contractors with years of experience I spoke to stay away from Schluter products.

[@schlutersystems1]

Hi there! Sorry to hear you are having trouble with membrane and thin set. We'd like to know a bit more about what happened and would like to connect you with your rep. Please send us a DM with your name, zip code, and phone number and we'll put you in touch with him/her.

[@hermes0623]

Or cut up 25 foam coolers and build the same quality "wall" hilarious

[@Rosscoff2000]

Have you ever used this stuff? It's nothing like the styrofoam of coolers - it's really rigid and strong.

[@abewilcox4560]

@@Rosscoff2000 no it's not. I've used it, and not even impressed

[@Rosscoff2000]

@@abewilcox4560 my experience has been different - I'm happy with it and even happier with a cheaper alternative with cement facing, Marmox Multiboard.