How much should the water level drop in a Kerdi Shower flood test?
I have been researching Kerdi Flood testing procedures online and came across this thread over on John Bridge's tile forum.
Here is the link. http://www.johnbridge.com/vbulletin/...ad.php?t=87445
The moderator there who answered the question is like Jim an engineer and one would think they have a solid understanding of building science. BBCAMP replied that the water level in a Kerdi flood test needs to be topped up after one hour. He goes on to state that if it leaks more than 1/8" you have a leak.
I worked out the math on a 1/8" drop oin water level for a 3'x4' shower and it equates to more than 4 bottles of wine in a 3'x4' shower.
This can't be correct? Can it? Of Course not.
Here is a shower of mine sitting pretty on hour 48. No loss of water and no drop in water level.
I use a tipped coin method of marking these Kerdi Shower flood test to make sure we read the exact water level.
I have never seen drops like this using Noble Seal TS, Kerdi, Hydro Ban or any of the liquids we use. What do you Kerdi men out there think? IS this common on a Kerdi Shower flood test? If so what are you doing wrong?
I emailed Schluter today and hopefully in a weeks time I can get an official reply back from them.
What do you think Jim? Would you say 1/16" level drop is OK? 3/16" drop? 3/32" drop?
I measure the water levels exactly when doing flood tests here in Vancouver and we measure for evaporation when needed?
Never have I had to "Top Up" a flood test.
You can see even Schluter showcases a flood test with their new installation video.
Is Kerdi Hydrophobic? I say no. How can a material that wicks water be Hydrophobic
So yet another discussion on Hydrophobic shower membranes has been shut down. For those of you not members of the Linkd'In NTCA group I'll fill you in. I'm disgusted with these Hydrophobic claims nad have been asking anyone to prove it to me. By doing this I'm hoping more people will realize it is a stunt, a joke, bullshit, BS, a trick ...... etc. I even offered up a free linear drain!!!
Well one of the worst writers online joined the group and started with his nonsense and this lead to further debated. We learned that Steve likes Charmin toilet paper and the head of the NTCA shut the thread down. Bart (NTCA Director) tells me he received 50 complaints from 2500 members. Are you kidding me?
50 people are upset to a point to write the NTCA and say "John should not talk about Kerdi wicking water" or "I don't like this debate". I'm a little taken back and shocked that the discussion got closed. I'm even more upset that the comment;
Was removed in the process. I feel it highlights the class of our man from Texas. Mr. Avanti Tile and Stone or Avanti Tile and Marble.
If you read the post above you will see Steve claims to prefer Durock or Permabase. If you follow his post of John Bridge's you wil see him recommending drywall? Why is this? And to openly claim to have done the Kerdi trick... That's funny. Steve claims to have done the "Magic Trick" and we are waiting for the video.
Now many of you regular posters may not like my rants but Terry's forum is one of the last "Clean" forums can find. Less edits. Less removals. Less thread locking and on and on.
I have a nice linear shower drain for anyone that can make a cone from Kerdi with a pin hole in the bottom and then fill it with water. If the Kerdi is "Magic" it will repel water from the seam and the pinhole. If the Kerdi is "Hydrophobic" you should have no issues. If the Kerdi wicks water like I have proven time and time again you will get a slow leak- drip, drip, drip, drip, drip.....
I have bitched about Kerdi for a long time online and in order to switch hats have gone to great lengths to find a setting where it can be used and satisfy my standards. I have come to learn that another German company Ardex allows the use of modified thinsets with Kerdi and not only do they recommend it they double the 5 year Kerdi warranty to Ten. Now you can still get lifetime warranties, 25 year and 15 year from some of the others waterproofing companies but for Kerdi this is twice the norm!
For more information on the ten year Kerdi warranty contact Robert Russell <Robert.Russell@ArdexAmericas.com> - Bob sent me the products from Ardex I need to qualify for this ten year warranty and send me the warranty in writting to my office!
As for that free linear drain (I only have one drain on the table for this offer). All you need to do is make a cone of Kerdi and poke it with a pin. Remove the pin and film the entire process. I would like to see the video posted on youtube. I'm not worried about loosing one of my linear drains since I have tried this same test over and over again with always the same result. Drip, Drip, Drip, Drip
Failed Kerdi Board Hydro Ban Niche Detail.
So two months later and still the offer of a free Kerdi Line Drain on the table not one person can upload a video of the Kerdi Vortex fold. I love how many people claim to do it and that not one person will prove me wrong with video proof. It has been almost a year or more that I have tried to find anyone that can do it. No setter I have ever met can do this trick. Have you tried at home? Try it?
In my garage is a Kerdi Line drain. I'm going to keep the contest going another month and see if anyone can prove me wrong. If no one does I'll install this drain and show you the proper procedure (or at least my proper procedure) for making a water tight shower out of Kerdi.
I have mailed out now 8 of the Kerdi inside corners John Bridge and others have claimed to use. These corners sent to pros in the business.
I'm saving a few for my local BC rep - who told me he can do it but never send me a video. I'll bring them down to BuildEx next year and see if he can pull it off.
As for anyone else wanting a chance to win this drain from me - post those videos! Two minutes showing the Vortex Fold and the cup holding water.
I'm told the trick is to get a single drop in first to "Air Lock" the pin hole on the bottom. I can't do it. I've tried dozens and dozens of times.
In John Bridge's book he is preforming this trick over a sink and does not show the bottom of the cone.
Jim can I mail you a inside corner so you can try?
I have given Kerdi a really hard time online and mostly because so many people have no clue how to install it and even go as far as recommending their piss poor methods to the masses. What Kerdi does have going for it the most is - Technical Support. Top Shelf support and just recently got a glimpse of how good it really is.
I was approached to look at a failed Hydro Ban - Kerdi Board niche detail and asked how I would approach the repairs. In the resulting discussions I suggested that Dale Kempster be involved and he did come and help this user out. What I'm not impressed with is the workmanship in the first place.
I see poor thin-set coverage and glass tile over Kerdi Board.
I see wall studs exposed! That is brutal and this from a "Kerdi Certified Pro" in Texas.
I see missing framing and missing fasteners.
And I'm told the local Schluter rep inspected this job.
What you can't see is the back and forth from Dale and the client. I am totally impressed with the level of service Dale has offered up and that is worth something. I also am impressed with some of the finer points of Kerdi Fix and a little more convinced that technical support at a city level is no where near as good as technical support from head office.
This Schluter rep in Texas should have caught the finer detail notes Dale did and that I could see myself from just pictures.
Careful who you hire and if things don't look right - put the brakes on the job like this client did. They now have a repair plan in place and the assurance of the manufacture themselves.
Nice work Dale!
This is the niche detail. The problems started when the installer used a product from Laticrete that is not the equavalinet to Kerdi Fix as "Kerdi Fix"
The red in the picture is actually the wall stud - so there is no backer board there at all.
When questioned - I'm told the installer told this client "He is certified by Schluter" - Schluter replied that this is not right and gave this client options to do so. In the installers defence he did offer to build a better niche earlier to mine and Dale's involvement. That said - looking at the quality of this niche it appears that all steps are not being followed and perhaps our setter here in Texas needs another day or two at Schluter School.