ᐅ Sheathing of the WC pre-wall element directly attached to the frame?

Hello,

I am new to the forum and would like to ask my first question(s).

I installed a Geberit concealed cistern in cooperation with a plumbing company. (The company handled the water connection pressing and so on, and I installed 2 layers of 12.5mm (0.5 inch) Fermacell boards.)

Now to my actual question:

- After the boarding was done, I noticed that in the installation instructions the cistern frame was directly screwed to or mounted onto. In my case, there is about 10 to 15cm (4 to 6 inches) of space to the next metal profile, as shown in the pictures. Is this sufficient?

- Or should I later add self-drilling Geberit panel screws directly into the frame to prevent it from flexing and possibly causing cracks in the tiles in the toilet area?

- If yes, I am concerned about metal shavings falling into the structure and eventually causing rust or other issues.

What would you do?

Thanks in advance for your answers.

Regards,
markus90

markus90 schrieb:
- After installing the drywall, I noticed that in the assembly instructions, screws are placed directly next to or into the frame of the concealed cistern. In my case, there is about 10 - 15 cm (4 - 6 inches) of space to the next metal stud, as shown in the pictures. Is that enough?

The Geberit frame is self-supporting. However, I wouldn’t recommend having more than 40 cm (16 inches) distance to the next support beam.
The original Geberit system studs specify a maximum spacing of 55 cm (22 inches).

The option to screw sideways into the metal profiles is only necessary when the pre-wall element cannot be anchored to a rear wall—meaning it is free-hanging (for example, if there is a drywall partition behind the wall).

And yes, Geberit themselves use self-drilling screws to attach the drywall at intervals of 12-16 cm (5-6 inches) to the two vertical studs.

markus90 schrieb:

If yes, I’m concerned that metal shavings might fall into the construction and eventually cause rust and similar issues.

Why? That’s exactly what it’s designed for. And if something in your pre-wall construction starts to rust, you probably have a completely different problem.