Is this stove installation OK?

[Boende45]

Had a minor water damage near the stove located on the lower floor in the corner of the house. The house is a classic 1.5-story from the 1980s.

In connection with the water damage, the ceiling was opened up to locate the leak and assess the extent of the damage.

I then see that during the chimney installation, two floor joists were cut for the passage. The floor structure is thus for the second floor.

As a layperson, I find this looks peculiar.

Any experienced structural engineer who can assess if the execution is OK?

Is it professionally done or does the floor structure need support?

The installation was carried out by a well-renowned company.

 

[fribygg]

I would have emailed the pictures to the well-renowned firm and asked if this is how chimney installation should be done.

I think it looks like pure cheating; if it were newly done, I would, of course, demand that they redo it. However, it might be more difficult to demand if it's been over ten years since the chimney was installed.

 

[Workingclasshero]

Hello
Have you experienced any problems with the floor upstairs?
No, it shouldn't look like that.
How long has it been since the chimney was installed?

/W

 

[Boende45]

Not noticed anything on the floor upstairs and do not see any deviation when I measure with a spirit level.

The installation was done 3 years ago.

It must be very common for floor joists or rafters to "be in the way" for chimney penetrations.
What do you do in these cases?

 

[Tompafix]

Haven't noticed anything on the floor upstairs and also don't see any deviation when I measure with a level.

The installation was done 3 years ago.

It must be very common for floor joists or rafters to "be in the way" during chimney penetrations.
What do you do in these cases?

Offset. Transfer the load to those next to it. If it can be avoided, it is. Avoid rafters as long as possible. It's not that the lower arms from the rafters are part of the joist? If so, it's important to address it as it affects the strength of the rafter.

 

[mgranbom]

Shouldn't the chimney also be fully insulated BEFORE it enters the joist space?
It looks like the joint to a larger diameter is inside the joist space.

/M

 

[Boende45]

Shouldn't the chimney also be fully insulated BEFORE it enters the ceiling joist?
Here it looks like the joint to a larger diameter is inside the ceiling joist.

/M

Yes, it's true that the double-walled chimney starts a few centimeters up in the ceiling.

However, there is a stone wool board about 100 mm high around that part of the chimney, which I assume is the solution.