The distance from the back wall to the flange is based on the toilet design while the clearances to side and front walls are set by the local building code.
Toilet tank too close to wall tile.
Sometimes building contractors make mistakes.
They built the walls in a friend s bathroom too close to the waste stack pipe in the floor.
Beat on the wall to get the room to get it to fit or loosen the bolts in the bottom of the tank and slide it to one side.
It was uncomfortably tight.
The space between your tank and wall is not your contractor s fault it s too bad they just don t communicate these issues with homeowners.
The toilets were installed too close to the walls.
You must have a 15 rough.
The framing could have been moved or boxed out.
Some brands have a tank that would be perhaps 2 thicker.
And yes it actually does have to do with the toilet you chose.
Reframe it as if it were a low doorway.
I would install a cabinet on the wall behind the toilet then.
You really don t need that wall behind the toilet do you.
The closet you can get would be a 14 rough toilet.
Even if you were to switch brands and use a 2 offset it would still be away from the wall.
However now one of the tanks has started to do a slow drip.
You determine the location of the toilet relative to the surrounding walls when you cut the hole in the floor for the flange which is the fitting that connects the toilet to the waste line.
The only way a floor mount tank type toilet would fit tight to the wall would be if the plumber knew exactly how far the opening had to be from the finished wall and also knew how thick the finished wall would be from the framing.
Create an alcove behind the commode by removing the drywall and studs to a height and width that will clear the tank.
Add a rectangle of 3 4 plywood against the back of opposite rooms drywall.
I would never attempt to install the pipe that way and hope it would all come out properly in the end because.
There s a way to move your toilet if it s too close to the wall.