My speculation is the reason you can't find resources for that specific approach is because that approach is inferior in almost all ways to modern tub construction.
Most importantly: tile and grout is mostly water-tight; fiberglass or cast-iron tubs are entirely water-tight. As you probably know, any amount of regular water leakage into unintended areas can ...
You can make a tub out of tile.
There are some issues to think about:
you will need a thicker more rigid structure for the tub and they can be made custom to an area and look great.
The massive amount of tile and concrete cools the water very quickly which can be mitigated somewhat.
I tried several methods and found a water jacket water heater with a ...
I have no idea. Affordability is relative to the size of your bank account.
Probably not, they don't seem very comfortable. Do a Google search for "tile tubs" or just see the image below. If you get inspired by the image then make sure to give the outer edge a gentle slope into the tub.
Water-proofing is probably on-par with ...
Is that normal? Yes.
Common? Yes. You'll find plumbing in a similar state in probably hundreds of thousands of homes in the united states.
It is a problem waiting to happen? Yes.
Is it dirty? No.
That bad boy right there is good and corroded. A good candidate for proactive replacement. In the future, whether you wait for a leak (which could be a blow out or ...