ᐅ What percentage deviation from the building plans is generally allowed?

As a special request, we ordered a walk-in shower from the builder, which is specified to be 90cm (35 inches) wide according to the construction and performance description as well as the building plan.

We also received a corresponding extra offer from the tiler, with the condition that the wall tiles align exactly with the glass partition of the shower at approximately 90cm (35 inches). An aluminum edge profile is installed at the tile edge. All of this is correctly noted on the building plan.

The shower base was actually installed with a width of 90cm (35 inches), but the glass partition is positioned at 87cm (34 inches). This results in a deviation of more than 3%. So we are missing 3cm (1 inch) inside the shower, not to mention the tripping hazard at the floor which also looks unsightly.

What tolerance is allowed here? Does DIN 18202 also apply in this case? Or is there another set of regulations for such deviations from the building plan?

What does your service provider say?
Is the rough construction dimension shown on the drawing? (90cm (35 inches) from where to where...)
How much impact do the 3cm (1 inch) have on your overall happiness?

Assume the structure is in shell condition.
Adding plaster and tiles, you get about 3 cm (1.2 inches).

On the other hand, you could argue that the room is too small on the side where the shower wall is installed...

In my opinion, it fits well.

Which trip hazard? Photos

HilfeHilfe schrieb:

Which trip hazard? Photos

The walk-in shower itself is on a platform that is 90cm (35 inches) wide. The glass partition is mounted on it with a distance of 87cm (34 inches). So, on that side, you still have an overhang of 3cm (1 inch).

So you basically trip over the glass wall by 3cm (1 inch)?!