http://www.eurocerob.ca and your mission statement says you want to top quality Professional Tile Services for tile and stone - or something like that.
Top Quality is doing the job right.
Professional services = doing a flood test properly.
Now in Montreal I know only one other tile pro. Hugo Sanchez. Do you know Hugo? He works with Kerdi all the time. In fact he only uses it. When I called Schluter looking for Line Drain installs for my presentation at Build Ex a number of years ago they gave me his name. Funny, they did not mention you at all.
In Montreal - the only true I know is Hugo Sanchez. He keeps winning the TTMAC awards year after year,
Check out his web site.
All his awards are located on the bottom of each page.
Anything else you want to talk about Roberto? Let me now if you need Hugo's email address, maybe he can help you find a proper test plug.