ᐅ Chimney built within the masonry structure, not attached externally

Hello,

Does a chimney always have to be positioned in front of a masonry wall, or can it replace the bricks between two rooms (attic without a load-bearing wall)?

We would have less lost room depth if that were possible.

Are there any issues with fire safety regulations regarding this?

Hello

I wouldn’t expect any issues with fire protection there. However, since different building materials expand differently, this will constantly cause cracks in the plaster and possibly in the wall covering as well.

Olli

I hadn’t thought about that before, thank you for the suggestion!

So it would be better to avoid that and place the chimney in front of the wall instead...

Hello

It should say "at different temperatures."

Yes, I would avoid that on a smooth wall.

Olli

Yes. For the same reason, we were also advised against it. We have now placed the fireplace in the hallway, so we don’t lose any space in the rooms.

How big is your chimney including the cleaning shaft? It’s really difficult to find a way to place it so that it doesn’t interfere in the attic.