Confused about wetrooms

[diamondtiling]

Thanks bugs. It still boggles the mind that we go to all this expense and effort to waterproof a wetroom, and yet in this day and age there is no such thing as waterproof grout, meaning that water can still find its way behind the tile!

I understand that a good addy is water resistant, but surely there is still a risk of the tile dislodging from the substrate if water gets between the substrate and the addy?

If the right preparation is carried out then the room will last for many years. Think about a swimming pool, the same grouts and adhesives are also not 100% waterproof (unless epoxy) but because it has been built and installed correctly then it will do its job, and these tiles are immersed in water all the time.

Tanking has its place in the tiling industry.