K
Kevbos
It is a bath area .it is not subject to sustained amounts of water .most bathrooms shower area etc only have problems when water gets past weak points .these are areas where grout will crack etc .90 per cent of damage done in these areas results from water passing through edges of baths. Shower floor or tray areas .are you being purposely blind to this .a wet room is a room in which everything is tanked into a drain..once again read what I write .how can you tank a wall onto a bath edge.