I was speaking with my builder today about waterproofing bathrooms as we are just about to get to plaster stage. We plan on having full floor to ceiling tiles in our bathrooms.
He tells me that they only waterproof the floors and walls of shower area of a bathroom, they do not waterproof all the walls of the tiled areas.
Does this sound right? Should I waterproof all walls or is this overkill?
I understand other areas would not get excessive water (typically only moisture) however I want to ensure I have a propper job done. Both bathrooms are upstairs and the last thing I need is leakages in 15 years time.
Advise much appreciated.