If You Use KERDI-FIX, You NEED TO SEE THIS!
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- čas přidán 13. 06. 2019
- Kerdi-Fix is a Silane based humidity cure sealant used to attach Schluter Kerdi Membrane and Board to other fixtures such as tub flanges, baseboards, edge profiles, window flashings and more.
IT IS NOT INTENDED TO SEAL TWO LAYERS OF MEMBRANE!!
This is a very important and often misunderstood concept when using Schluter Kerdi membrane shower systems for waterproofing. Too often I hear the comment, " just put kerdi fix over it" . But what they don't realize is that Schluter never has stated that is what it was meant for. The fleece on the kerdi membrane prevents Kerdi fix from obtaining a water tight bond. Water will seep right through.
I hope this video helps you understand better what Kerdi-Fix IS and IS NOT intended to be used for.
Please try your own test at home and leave your comments in the section below.
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I was about two minutes away from doing it wrong. Thank you!!
THANKS for showing this. I was getting ready to use the fix in my shower niche instead of using the kerdi corners! Big help.
Really appreciate your honesty and your experience keep it up brother!!
Thanks for your factual, clear, no bias information.
Thank you brother for this info! I didn’t know this and have definitely sealed niches up with the fix. Very glad to know this now
I was going to start my small bathroom remodel and im sure glad i saw this. Keep up the good work
Thank you so much for all you do bro I’ve learned so much on how not to do things as well as how to properly do it and what material to use and not to use! 🙏🏼
Thanks brother! My brother and I have recently started expanding our use of newer products out (we’re young but learned from a legend in our town lol. He did tile for over 55 years I think) and your videos give us some insight on the products we choose. Thanks again! We’re gonna start posting our jobs here on CZcams as well, we’re here in East Tennessee.
Thanks for you videos!! I’ve done tile/stone for 40 years and always look for new/different techniques. 👍
I have been watching many of your videos in preparation for tiling the replacement of a bathtub with a Sort of Roman bath. I have done most of my own repair work in my home of 30 years. I hope to live here another 30 years, at least. I LOVE HOW YOU SHOW FAILS. I realize I am not a professional, nor can conceive all possible fails. By watching your videos hopefully I will prevent most of them, THANK YOU FOR YOUR TIME, EFFORTS AND FOR SHARING YOUR EXPERTISE.
Hey great videos and appreciate the info on this. Was about to use the fix on a job that would fail! Thanks mate!
I use Go Board and Go Board sealant on my walls. I band the seams and corners with kerdi band and pretty much everything in the shower is schluter besides the board and sealant. I've never been a big fan of kerdi board because half inch kerdi board is too flexible. I like the go boards firmness when i'm pushing tile onto it. So far, so good!
I watched a lot of videos, The Kerdi-Fix is to adhere the Kerdi band to other products like the lip on the Tub/Shower pan. Dont use it to 'glue' Kerdi to Kerdi, Use Mortar mix to do that.
Why? There is a cost saving, but no other good reason.
If you have the option between bonding board to board or fleece to fleece with a (1) sealant/adhesive vs (2) mortar - the better option is still the the sealant/adhesive. (assuming something close to 100% coverage for both).
Man ...you have a great and HONEST message ....Thank you .!
I hear you there! I have build niches out of k board and Kerdi fix in the past.I decided to do that test just to see and I’m glad I did! Great video!
I just ran across your video. Man, now as a DIYer about to redo a shower with Kerdi, I'm having second thoughts. All the Kerdi is available locally to a home owner where as the Wedi is not.
Im glad you show the truth and how it works. We saw the thinset will wick eventually. But it watwr management. Water proofing will take a couple systems
It's called Moisture Cure, you can help it by using a small spray bottle and damp down by misting, will help it cure faster. Enjoying your videos mate and have subscribed. Cheers
Great video, you just proved what I have been preaching for a long time, I'm in so cal and you know I use Fulham hot mop shower pans , wrap scratch and brown, and I sleep well.
Love the videos.
Awesome video bud. Loving the channel
Could you please make a video on measuring for a mitre cut. I always struggle with mitre cuts and making them look good
Cheers fella 👍👍 scares me to death of all the years I've tiled, and all this new stuff with the endless pit falls.
You really do do a fab job of communicating the facts in hand . Thankyou. 👍
Awesome! Great content. I learned something
Great job. I find it funny with the amount of info you provide with issues, not one rep speaks up about how to fix the problem or that's not the intended application for the product. I know the word has reached at least one... For a business to be successful you need follow up. If other manufacturers copy or have a similar product that works or cares to hear comments they will take over. Every time I get ready to start using schluter I hear something. I think the only guarantee is another video provided by you to use ardex 8+9 over any type of joint using either thinset or now kerdi fix.
Ahh this is not a valid method for using any product in the world that has to do with waterproofing.
Ja ly 8 plus 9 is awesome product
Love what you're doing sharing the truth, keep the vids coming 👊🏾
schluter ,customer service told me to use it on my torn linear drain,when the bonding flange was cut via rough handling ,shipping,I called them and asked for a warranty replacement, which,after some drama, they did replace, because I Informed them ,that your videos showed exactly what you show,...it wicks,leaks and will cause mold,and failure down the line,at first the rep tried to back out saying the tile shop wouldnt have sold me a damaged linear drain, and that I just wanted free schluter product,I posted on geeks,and another person said they also had a damaged linear drain,confirming my story,Dont use kerdi fix to repair cuts or penetrations,THANKS mr O
Name names. Love your work. I use tru guard
Glad I checked this out. I've been doing this trade for 20 years and decided to use kerdi fix as a perimeter bead on a tub deck to waterproof the edge.... I think I'll just use banding as per usual or fill it with a wee bit of thin set, then red guard when dry. It isn't going to see a ton of water.
You should be good there. That’s an intended purpose. I typically
Thanks a lot for all this info.i was gonna use it for my shower but not taking a chance
Really enjoy your testing 👍
Hi Isaac. Appreciate your videos, and you obviously know the tile trade well . After seeing this video I had to run a test on the Kerdi / Kerdi Fix too. I'm not really concerned about jobs we've done since we don't rely on Kerdi Fix, but I thought I'd give it try. Anyway, long story short, the cone I made has been holding water for 48hrs . Maybe give it another shot, and be sure to fill the pin hole in the corner. Cheers and Happy New Year !
I’m pretty sure this guy performs all the fails on purpose for content. YouYube clickbait
To the Harry Homeowners out there actually take a schluter class if you are going to use it. Read in his description, this isn't the suggested usage. Though I'm very grateful that this content is out there, like anything, it's a data point. It's not a data set and it's not end analysis of statistical modeling. I think TC keeps it pretty square about the nature and conclusions of his tests and I appreciate it.
What product do you use to seal/waterproof cuts, holes, bad corners, seams with waterproofing membranes? Great what not to do video. Thanks for your time.
Interesting as always Isaac. Since I believe Kerdi-Fix is intended to bond the seams between the waterproof sides of membrane or Kerdi-board could you do an alternative test? Create a pocket... cut one 6" square of Kerdi membrane, apply a bead of Kerdi-Fix along three sides of the square on the waterproof side, then bond a second 6" square to the first, waterproof side to waterproof side. When it's cured fill the pocket with water and see how it performs.
Good stuff, thanks for the great info!
Very helpful advice!
Very interesting.. I’ll be conducting some test of my own on kerdi and kerdi fix. I will say kerdi fix did save my dads boat, the fiberglass cracked and he jammed a whole tube in there and we still take the boat out, with no water or moisture inside .
Kerdi fix itself is waterproof. The water is getting BETWEEN the fleece and the kerdi fix.
Thanks for sharing great info!👍
It is worth noting that with high-end exterior waterproofing systems (not part of most tile workers toolboxes) that incorporate fleece sheets...such as Kemper Kemperol...the fluid waterproofing resin is first applied to the substrate, followed by the fleece which is then FULLY SATURATED with the fluid resin. The fleece is only there to provide structural integrity to the overall membrane and all fibers are fully surrounded by and keyed into / embedded in the fluid. There is no pathway for moisture to flow laterally through the fleece matrix...for the very reasons outlined in this video.
So would you say the keying in process makes Kerdi Fix waterproof? So that the membrane is fully saturated?
Wow! I am really glad that we just saw this. This was the first time we used Kerdi-Fix to do our edges in a hybrid shower solution (GoBoard on walls / Mud bed at bottom with single pitch to linear drain). Reinforced edges with AquaDefense.
We will be doing a flood test in the next 1-2 days. BUT - since our edges were done with Kerdi-Fix, we are concerned. We will try it anyway but now are not optimistic.
In the past, we have used Wedi sealant and it is perfect. But could not get it from our usual supplier and thought Kerdi-Fix was the same type of stuff. How can Schluter call it a Sealant if it is NOT WATERPROOF?!
We are not optimistic but will proceed with our flood test. We'll probably have to redo all that edging etc! This was our 1st and now last time buying anything from Schluter! All marketing and no meat. We'll stick to Hydroban, Aquadefense, Wedi, Noble and GoBoard!
The sealant is waterproof. The point of the video is to show that if the sealant is used to bond Kerdi mesh or the fiber mesh side of Kerdi board, it will not work, due to the fact that the fibers can draw moisture in. Mortar, as others have pointed out in the comments, is the appropriate bonding agent for the fiber side.
@@NoahCowan Wait what? The kerdi band has 2 sides? Both look the same to me?
@@silicondt1 my typo, corrected above. You’re correct that kerdi-band is not a fiber product and both sides are the same (to the best of my knowledge).
I really appreciate all the time you’ve taken to step up all our games to another level.
Thanks for the knowledge
Mind blowing info !
Thanks for the info!
Nobel seal been around longer then kerdi . Am glad you test it . I know you test the chalk. But been asking you to test the product. Look at Michael Byrne video he is my teacher.
Thanks Issac! I appreciate your knowledge in this trade.
I used sika urethane sealant to fix the holes in my kerdi for the ledger board screws because I could not find kerdi-fix..wish I had this info before I finished the shower..you're doing good work testing this stuff man..I know now for the next one lol..my fixed holes are 5 inches from the floor so I have hopes that it's fine as it won't see standing water..so far it's good 8 months later..I can see the back of the shower in the storage area so I'll be able to see if a problems arises..
Does that work better then pure silicone?
Great video!
Great. Just got home minutes ago with $450 of kerdi supplies ready to start a shower. Good video.
I have been using schluter and kerdi systems for over 10 years and have never had a single leak. And I have done over a 100 showers with it.
If you use an iron on the kerdi membrane it will hold its fold super well. I do that when I do any corners for showers
Thanks for sharing!
If you want Kerdi-Fix, or any similar sealant to seal a seam on Kerdi Membrane, all you need to do is embed a thin layer of thinset mortar into the membrane prior to sealing it. You could also use water based polyurethane instead of the mortar, but you've presumably got the mortar there already. I've done this experiment exactly as shown in this video, and it doesn't leak at all if you use the mortar. The reason this works is that the mortar soaks through the fabric to the plastic layer, and then you're sealing the mortar.
What do you mean water based Poly instead of mortar?
@@ketertrue aquadefense
Love your videos!
How much does Kerdi Fix differr from 100% silicone? I use silicone on
every butt joint just to be extra safe and especially in the corners
before I even start with the kerdi band. Seems to work perfect at about
10% the cost. I'm about 4-5 tubes into tub to ceiling tub surround which would cost
a fortune with Keri Fix and I think I have a superior seal.
Wow thanks for sharing
These are great vids
What do you suggest we use at the connection of the Kerri fabric and the trench drain?
Good morning Sir can you install kardi ban over kirdi fix . will it seal?
Thank you for your time and videos
Great facts my friend
What are the other 2 companies in the video, ive been using schluter for 5+ years but ur videos are definitely making me want to explore my options know that other companies are starting to replicate the schluter design
I'm only interested in the blue one. The green having the cancer warning makes me think of lawyer commercials in 20y. Anyone know??
Piggybacking on your kerdi 'fuzz' idea, I just did the same test with kerdi-band; one w/kerdi-fix and one w/silicone. BUT I sealed only at the edges (2:08 in video) and I removed 'much' of the fleece in the seam (small chunk of 80 grit sp loosened then pulled most off). I rubbed the goo in well with my gloved finger before pressing the seams together. It has been 2 days and there is no sign of any leakage. The water has climbed up the kerdi 'fuzz' on the water side but totally dry on the far side of the seams. As a DIYer, I can afford to take the time to do this arond the 4 rounded and recessed corners of the one window in my steam shower (no direct water).
big point here as i rely on kerdi fix to do just that
Lol another hack.
What did you use instead of Kerdi fix on the other two models? Btw great demo bud!
Can you used kerdi band on cement Board?
Issac, I love your videos and am learning a ton. You may want to reach out to your friend Sal Diblasi as he has a video out about building a custom niche out of kerdi board and he does exactly that, uses kerdi fix as a caulk in the inside corner seams to water proof them. Now maybe it really is water tight as the board doesn’t have the same deep felt as the band, but he will probably be more open to exploring the issue with you than with me. Thoughts?
Hmm..then I'm surprised he has left that video up or at least hasn't addressed it in some way or another. He put a pretty good slope on the marble sill so maybe he's counting on water running off before it finds it's way to the seam?
Love your channel but I did this test myself- covered the top, exposed area of the corner also and it’s held all the water for 2 days
Can you set glass or ceramic tiles on kerdi board shower floor with silicone caulking? tyvm for your videos!!!
So what would be a better product / sealant would be better to use in movement joint where ditra and tile curb meet
I'm a plumber, This is what I know, I only use what works and is proven. I will not guess, Because I have to put a warranty on everything I do. This goes with any products. Guys like you help everyone out a lot. It makes life much easier for everyone. Contractors that do not pay attention to these things are c***** contractors.
Built my own niche out of kerdi board.
Used kerdifix to bond with screws to hold together for extra strength.
Water tested, held watet for 24 hours no problem.
This may have already been asked but, Does Kerdi fix work in seems between ditra and other objects. Like tubs?
Great video/information sir!
Sooo. How do you seal around a pvc window frame in a shower that’s constructed of kerdiboard?
What did you end up doing? I find myself trying to solve this exact problem in a bathroom remodel
I have an unrelated question. When you're tying and a dam to the walls using the Schluter trim such as rondec, how do you deal with the corners? I hope you can picture what I'm talking about. I have looked and looked and looked and so far Schluter and Arizona Tile have been no help. How do you tie the dam to the walls using Schluter trim? Everybody goes through this I can't imagine why it so much trouble to find a video from Schluter or at least a picture!
So how do you actually waterproof these wedges? With thinset? Seems like a mighty fine layer of protection in vulnerable corners to me :/
What are these other samples you are using?
First thanks for all the videos, I don’t do bathroom installs but I have learned a lot watching your videos. But I feel like they should just make these products 100% water proof. Isn’t there a red spray that waterproofs?
Are the other two competitors compatible to put on the kerdi board and what are the name brands of the other two?
Hi which make is tge other two thanks for thus video
hi, you said something 'gluing' a waterproofing membrane to a linear drain, so do you think the Kerdi-Fix and the other guy membrane would work?
I would like to see you do the test with kerdi and Kerdi fix again , I think you have had bad results to to unsatisfactory kerdi fix application method . Work the seam better to ensure a decent bond .
I use lots of kerdi fix in applications where there is no way to have a 2" overlap on my kerdi. In the past I have had this method okayed by schluter rep . Have never had a problem , but I will test this out too .
I think you are in error. Hopefully ....
Thanks for the video , definitely got me thinking and I will be trying this as well .
I saw a recent video where you are using Kerdi still - is there a reason that you are using kerdi still over competitors?
The name says it all. You need to "fix" it after using it.
I feared there was a potential problem with leaks on the soft sided part of the sheets.
Demonstration confirmed, thank you.
There is no soft, no front, no back, no up, no down, no top or bottom side to kerdi. It is the same on both sides.
Hey do you think 100% silicone in corners of the shower pan would work?
Who makes the green and the blue ones?
Had some pencil tiles not adhere to mortar, will this work? Floor & decor guy told it might work
So instead of Kerdi Fix around a Pipe Protrusion would I be fine to use something like Dap Kwik Seal bathroom caulk?
So how do you seal Kerdi? If you can’t seal it with Kerdi Fix, how does the thin set make a watertight seal?
What brand are those products? Please
What are the names if the blue and green products? I guess thinset is better than kerdi seela for waterproofing then?
What are the other brands your showing ?
Love your Vids Isaac, I always put a bead of silicone on top and underneath my premade inside outside corners. I never liked Kerdifix much. Sal....Wheres Sal?
that is interesting you trust worthy thing you
Always great videos Isacc. I admire the passion you have for the trade. Thanks.
Other video, even from Shluder, show using kerdi band and kerdi fix against the bathtub and ditra. So would this NOT be a good idea and there is a better product to do this?
What would I use to seal up liner drain
Can you please list the product names of the blue and the green material.
Thanks Great info.. Been kerdifixing seams recently “just for good measure”.... what a waste of time & $ 🤣
Yes I found out the hard way after putting trust in product ,plus the schluter guys were I went to get certified ,now this was when system first came around in my area ,( probably 10 yrs ago ) said it was intended for such things like self made corners like he used in video ,so my da. Suggest using in a large commercial shower with 6 drains wer having leaking issues ,btw I seen someone promote the hydro band and that system was used on project at beginning ) but I ended up looking like a fool ,might as well as mixed up a flour paste and used it ,never seen something fail and wash away so fast ,I have done many showers and none have failed to my knowledge ,but I don't think I will never not be skeptical of this product ,always when in doubt and I stress always go with what you know ,unless you are being paid nicely by some company to push their product
Isaac the Kerdi fix that comes with the drain kit with the metal extension ring is way better than that tube you have. It comes in a smaller aluminum tube.
weve used it to kerdi fix rss foam corny caddies/ little corner bench in the showers as well actually works really well when you apply a lot of kerdi fix when u install it ive tried to break it after it dried its not going anywhere olol
Noble seal and Latacrete?
So what are the other two brands shown??