*Update*: It’s been 8 months of daily use with zero issues. If I was going to build another shower, I would do this again. Side note: I would recommend using the Schluter brand thinset for installing the tiles. It costs a lot more but is really easy to work with and very sticky when installing the large tiles.

Thanks for this. I'm doing the same thing with my shower remodel. Just wanted another layer of security this being my first time using kerdi.

This is very interesting. I was just looking for information to see if I could apply the Mapai Aqua Defense over the Kerdi membrane and in the Q&A section on the Mapai website it said the Aqua Defense would not set up over a sheet membrane since the sheet membrane was not pourous and the Aqua Defense needed to be applied over a pourous material to set up. Now that I've seen your video and see that it really does, I think I will do this as well. Thanks for the video.

Exactly the reassuring video I was looking for in doing a very similar setup-thanks so much for your outstanding explanation!

Thank you for going through this. I am i the same boat right now with my bathroom and saw the aqua defense beside the kerdi stuff at Lowes and wondered if anyone has had success. Good job sir!

Doing the same…almost ready to apply it. 🤞

I am going to do the same. I used Kerdi pan, but traditional cement board which will need liquid waterproofing anyway, but was wondering if I should do a coat over the pan. Thanks for sharing

I’d still do Kedi band in the corners if the walls are durock.

Good idea

We only have red guard here. Is that similar to what you used?

I was referred this video, same situation, just want to be 100% sure of my install.

Yep doing this after watching kirdi fail vids... I don't want any steam in the walls of the steam shower I'm putting in

After your second coat, where the floor meets the wall, the still drying area really sticks out. The trouble with that is, it means that that area was the membrane was applied thicker than elsewhere. It will dry at a different rate, shrinking, which will result in cracks which will defeat the whole purpose. You would've been much better served had you put on three thin coats where the floor meets the wall than two thick coats. Luckily, it is an insurance coat an if you did the Kerdi properly, you should be OK.

We're doing a similar thing. After watching hundreds of hours of shower pan vids of Isaacs (Otile)... I plan to do a mortar bed pan with kerdi membrane using the unmodified thinset to adhere to the mortar bed. We also have our shower on the third floor of our house and are very worried about potential leaks... so i want the extra insurance of the aquadefense roll on layer. Thanks for the research you did as this supports my hypothesis that this might work. Also btw we're using the Flow Effects drain. What type drain did you put in?

Any update on how it is performing? I have the same situation and everybody says don't mix the products. I get that neither company will recommend it and I saw your other video on how well it sticks. Wondering how it is holding up? I realize it has only been a short time. Thanks for posting.

Aside from the waterproofing underneath the tiles did you use epoxy grout as well?

Can you give an update?how long has it been and are your tiles holding up?

Its 2 years, how is it holding up?

Still going strong ?

How is it holding?