ᐅ Pre-wall toilet frame installation in front of a knee wall under 1 meter on a floor heating system?
Created on: 23 Sep 2022 10:08
M
membersound
Hi everyone,
I want to modernize my bathroom in the attic and, in the process, replace the old toilet with a concealed cistern system. Preferably a pre-wall installation.
Problem: The knee wall (visible in the picture) is only 1 meter (3.3 feet) high. Additionally, there is underfloor heating embedded in the screed.
Question: Given these conditions, is it even possible to install a stable pre-wall frame that can support a wall-hung toilet? Or should I go for the lower-risk option and stick with a floor-standing toilet (the bathroom is mainly for holiday guests rather than myself)?
Geberit offers pre-wall frames with installation heights of 82 cm (32 inches) or 98 cm (39 inches).
Is it realistic to anchor the 98 cm (39 inches) frame just below the knee wall edge? Or would that fail, leaving only the 82 cm (32 inches) frame as an option?
Next issue: Floor fixing due to the underfloor heating. I can’t simply drill into the floor.
I plan to remove the tiles anyway.
Would it be sufficient to attach the feet with construction adhesive on the screed (or on the leveling compound I will have to apply afterward, since the tiles were bedded in thick mortar) to ensure solid floor contact?
I have previously only glued drywall floor profiles because of underfloor heating, and they held very well. But those were profiles, not just two supports.
Plus possibly two brackets for fixing the frame to the rear wall.
Or would I need to break out the screed, hopefully without damaging the underfloor heating, and set the feet in concrete?
Thanks for your advice and best regards
I want to modernize my bathroom in the attic and, in the process, replace the old toilet with a concealed cistern system. Preferably a pre-wall installation.
Problem: The knee wall (visible in the picture) is only 1 meter (3.3 feet) high. Additionally, there is underfloor heating embedded in the screed.
Question: Given these conditions, is it even possible to install a stable pre-wall frame that can support a wall-hung toilet? Or should I go for the lower-risk option and stick with a floor-standing toilet (the bathroom is mainly for holiday guests rather than myself)?
Geberit offers pre-wall frames with installation heights of 82 cm (32 inches) or 98 cm (39 inches).
Is it realistic to anchor the 98 cm (39 inches) frame just below the knee wall edge? Or would that fail, leaving only the 82 cm (32 inches) frame as an option?
Next issue: Floor fixing due to the underfloor heating. I can’t simply drill into the floor.
I plan to remove the tiles anyway.
Would it be sufficient to attach the feet with construction adhesive on the screed (or on the leveling compound I will have to apply afterward, since the tiles were bedded in thick mortar) to ensure solid floor contact?
I have previously only glued drywall floor profiles because of underfloor heating, and they held very well. But those were profiles, not just two supports.
Plus possibly two brackets for fixing the frame to the rear wall.
Or would I need to break out the screed, hopefully without damaging the underfloor heating, and set the feet in concrete?
Thanks for your advice and best regards
M
membersound23 Sep 2022 19:52i_b_n_a_n schrieb:
maybe generously open up the wall behind the toiletDo you mean basically removing the knee wall and installing the concealed cistern frame there instead?
In that case, I would need to close off the space behind the frame again. Otherwise, the frame would be exposed directly under the roof structure, which could be a problem if rodents get in. Cheers.
That sounds too complicated for me. I already have about 20cm (8 inches) of space for the frame. Ultimately, I am just replacing the old flush tank with a concealed cistern frame. The toilet will stay approximately in the same place.
M
membersound23 Sep 2022 19:53But back to the floor fixing: would you first apply leveling compound, and then place the feet of the pre-wall element on it (construction/assembly adhesive due to underfloor heating)? Or would you rather smooth the screed at that spot and place the feet on it, then level afterwards?
Or do I have no choice and should try to expose the heating pipes in the screed at that spot, so I can anchor the feet between the pipes into the floor?
Or do I have no choice and should try to expose the heating pipes in the screed at that spot, so I can anchor the feet between the pipes into the floor?
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