Hello,

I am in the process of building a connection for my kitchen stove to a flue in the chimney. As usual in my renovation of my old cottage, I come across things that I don't really know how to solve in the best way. I opened up the existing flue about 50cm to the left and to the same depth all the way. When I got all the way in, I discovered that there was an old flat iron going straight through the entire chimney where I opened it. On the sides where the iron went into the chimney, the mortar was loosened, and it didn't feel right to have a piece of flat iron right where the stove connection will be; it gets quite hot there. So I sawed off the iron as far out as I could reach. Now, after a night's sleep, I regret not asking someone knowledgeable here before... But oh well.

Now to my questions :)

As I understand it, it might not be good to have metal through the chimney, in the joints where it gets hottest in the chimney. However, is there any sensible construction reason to hold the chimney together on the ground floor with a flat iron? Should I try to build something similar into it?
And how do I best seal the holes where the remaining iron is? I can basically follow the entire iron with a stick = not tight...

Sorry for a long messy post...

Attaching a picture of how it looks in the flue where the iron is.

Thanks for now!

/Johan
 
Here comes the picture..
 
  • Wall with water damage and mold growth.
And two more..

/Johan
 
  • Close-up of a rough, textured wall with dark and light patches. Possible signs of moisture or mold are visible, illustrating home repair or inspection.
  • Close-up image showing an old, cracked concrete wall with visible signs of wear and tear, possibly part of a renovation project.
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