Wow.... that's pretty dam harsh !Should've properly covered yourself,once you seen the tiles, crackmat, backbuttered tiles, but obviously you're not a tiler and you're part of the problem we actually have while pricing jobs properly, you are the reason I'm awake,wasting my time, writing estimates at 1am, and obviously the customer goes with you, even though you turned up and didn't even know what you were looking at!, but you're cheaper! 😂
Sorry bud, you're by yourself on this one!
I'm a self employed tiler for over 18 years who is looking for a little help and knowledge....not an insult.
Yes theoretically membrane is to be used but in my experience where the area is very small and quality adhesives are used then there is and to date has been no issue until now.
However thank you for your opinion.....you have been most helpful.