I could give you some tips on bathrooms.Yup, it’s safe and very strong actually, so will use it for about 2 years or when I have project cash flow again as I’m wanting to redo all my plumbing and this may be a 2 year project because I also have to replace galvanized pipes in walls and once the walls are “open” I’m going to redo the bathrooms.
been looking at baths and mixers and they sure aren’t cheap!
I’m thinking of redoing the line from the municipal entry and rerouting all pipes above ground for leak purposes in future as well as making taps more accessible around the house as I only have 2 external taps on the same side of the house.
same goes with plug points. I only have 1 plugpoint per room but this project is tied with my solar aspirations as I want to run underfloor heating that is powered exclusively by solar with no battery backup.
As for plumbing. It's expensive so be ready to complete it when you start or complete sections at a time.
As for the underfloor heating. Easy but tricky subject.