That sounds like a maintenance item that would be the homeowner's responsibility. Insurance covers damage, not normal wear and tear or deterioration.
The costs will vary according to the quality of the corner shower stall. However a medium quality corner shower stall would be about $6000 to buy and install.
No you not have to put backer board behind the tub below the shower stall area. You only need to use it behind the walls of the shower stall.
A typical shower door is 72".
You can put it at any height. Unless there is some other reason not to, something structural, I always put them above the shower stall for taller people.
WXYZ is a trapezoid......
72" in a stall. allow about 12 in for vapor circulation or you get moldy grout
On wiring a house it is common practice to have other circuits in the wall cavity passing by the built in shower stall. Electrical outlets that face outward from the shower stall wall that service another room is also common practice. There is no danger from electrical shock as the shower is isolated from the wires by wall board and usually ceramic tiles that make up the shower stall or in some cases a fiberglass shower enclosure.
it has a toilet, sink, shower and tub. (if it has a shower stall and no tub it is called a 3 piece)
There are many products you'll find to clean your shower stall at the grocery store. Once you have it all removed, a great mold preventative is to spray some vinegar water in your shower stall after each use. Also be sure to use your bathroom fan, and to keep it running long after you've finished bathing.
Yes.Have insralled many in yachts.
it will poo
intake gasket is leaking