Retrofit chimney and connect stove pipe on the first floor

Good day,

we are planning to retrofit a tunnel fireplace stove in our house. In addition, a lightweight chimney must also be retrofitted. However, the lightweight chimney is not to be built from the foundation, but from the 1st floor next to a gallery. The fireplace stove, in turn, is to be installed on the ground floor, and the stove pipe is to be connected to the lightweight chimney on the 1st floor. According to regulations, the stove pipe is basically not allowed to bridge a storey. In this case, however, there is the special feature that the stove is to be installed in a gallery.
We would like to build the chimney on the 1st floor, as this saves us from having to make a wall breakthrough, and the chimney can thus be built relatively close to the ridge, which has also been introduced as a new legal requirement this year.

We have already had a friendly stove builder and chimney sweep inspect the site. However, he works as a chimney sweep in another area. He said that the connection of the stove pipe on the 1st floor to the chimney through a gallery is a gray area and that approval could depend on the leniency of the chimney sweep.

What is your opinion on this? See also the following concept images:

... and depending on the kindness of the chimney sweep, it could be decided whether this would be approved.

What is your opinion on this? ...

Sorry, "our" opinion should actually be completely irrelevant to you. It is unlikely that "your" district chimney sweep is reading here in the forum and sharing his opinion on this.

But he should be asked. Involving the affected experts early has never hurt me in my life. On the contrary. If you then tell him (he’s definitely the one who will come anyway!): The people in the forum said "this should actually be approvable," he will turn around on the spot! And rightly so :oops:. But all of this is just my humble opinion anyway ;)

We already had a friendly stove builder and chimney sweep visit us to inspect the location. However, he works as a chimney sweep in a different area. He said that the connection of the stove pipe on the first floor to the chimney through a gallery is a gray area and that approval could depend on the leniency of the chimney sweep.

What is your opinion on this? See the following concept images:

Close the thread and ask the chimney sweep responsible for you. There is nothing more to say about it because he has the final say and is basically the Sun King of chimneys.

It is indeed the case that in Germany, as a rule, stove pipes are not allowed to pass through building components. So you are not allowed to run a stove pipe through a floor. But if there is enough air around the stove pipe - I mean 30 or 50 cm - then floors can be bridged. However, I am no longer sure whether it is still allowed to operate two stoves on one chimney.

What is your opinion on this? See also the following concept images:

Basically, according to regulations, the stove pipe must not span a floor.

If that is the case…

However, in this case there is the peculiarity that the stove is to be built in a gallery.

… then _I_ see here a stove pipe that is clearly routed from the ground floor to the upper floor and thus spans a floor.

It is indeed the case that in Germany, stovepipes are generally not allowed to pass through building components.

If a wall is also a building component, that is not correct.
Our stovepipe goes from the living room through the hallway wall and continues in the hallway to the chimney. The chimney sweep approved it like that last year.

As for the original question, I can only say: call the chimney sweep and have them decide on site.