ᐅ Partition wall in front of toilet and washbasin

Hello,
a friend of mine wants to install a toilet on the exterior wall of his prefabricated house.
However, a backing wall is necessary for this.
A backing wall is generally useful anyway, as a future shelf or storage area, right??? That is my question.
What are your experiences?
Thanks, Tom

tommyboy schrieb:

Hello,
A friend of mine wants to install a toilet on the exterior wall of his prefabricated house.
However, this requires a cavity wall.
But a cavity wall is basically useful as a later shelf, right??? That’s my question.
What are your experiences?
Thanks, Tom

We don’t have one at the washbasin, and that works well. More shelf space usually means more clutter and more cleaning. Most of our items are stored inside the mirror cabinet, so they don’t gather dust. Only a few things are left on the countertop.
It’s the same with the toilet—there’s no other way.

Thanks 🙂
That’s already a good tip.

Old Building or New Construction?
How are water supply and wastewater systems planned?

Specifically regarding the toilet: Where will the cistern be installed? Or a wall-mounted flush button (1950s style)?
Usually, a pre-fabricated element is used for this, which includes a support wall. I don’t think the exterior wall should be chiseled out to a depth of 30cm (12 inches). Of course, the support wall can also be extended up to the ceiling.
These systems are installed either with drywall or built into masonry.

For the washbasin, it doesn’t matter as much. It can simply be mounted on the wall. However, having a support wall makes things easier since the pipes can be hidden inside it, avoiding the need to chase into the existing walls.

KarstenausNRW schrieb:

Old building or new construction?
How are water supply and wastewater planned?

Specifically regarding the question about the toilet. Where will the cistern be placed? Or a flush button surface-mounted (1950s style)?
Usually, a prefabricated element is used for this, which also includes a partial wall build-up. I don’t think the exterior wall should be chiseled out to a depth of 30cm (12 inches). Of course, the partial wall can also be extended up to the ceiling.
These are typically installed either as drywall construction or built in with masonry.

For the washbasin it doesn’t really matter. It can simply be mounted on the wall. Having a partial wall makes things a bit easier, as the pipes can be concealed within it and it avoids having to chase the walls.

However, you do lose space in the room due to the partial wall. This should be considered especially for the washbasin area.

tommyboy schrieb:

A friend of mine wants to install a toilet on the exterior wall of his prefabricated house.
However, this requires a stud wall to be built in front of it.
But a stud wall is generally useful as a later shelf, right??? That’s my question.
What are your experiences?

It’s not only your friend who has a “prefab” house, but you want one too (although we don’t yet know why). Of course, the stud wall won’t be built with masonry here. I have a similar setup myself; before I moved in, the bathroom in my rental apartment was renovated. The windowsill was effectively extended over the former cistern, which was integrated into the new concealed toilet tank. This creates a cleaner appearance and is easier to clean than the old external cisterns that used to hang on the wall there. As far as I know, this retro alternative hasn’t been offered for a very long time.

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