Casting a chimney

[Lilametallic]

Hello!

I have a chimney that probably hasn't been used for many years. The chimney is divided into 6 chambers and had stoves on different floors and rooms that no longer exist. The only stove that remains is the one down in the basement. Since we will not be using it, we thought we'd fill it in instead.

Is there anyone who has done something similar? Where should one turn to get this job done? And how much might such a project cost?

// Salonen

 

[BSOD]

Why?

Take a cloth or some suitable insulation and pack it into the top 15 cm section of the chimney. Then just cast the top 5 cm of the chimney closed if you, for some reason, do not want ventilation.
Is there really any reason to seal the entire chimney?

Cost: about 20 SEK... a little more if you plan to cover it with metal.

 

[Lilametallic]

Why?

Take a rag or some suitable insulation, and pack it into the top 15 cm part of the chimney. Then just cast over the top 5 cm of the chimney if, for some reason, you don't want ventilation.
There's no reason to seal the entire chimney, is there?

Cost: about 20 SEK... a bit more if you plan to cover with metal.

I was worried that the rest of the chimney would collapse over the years. But maybe it's enough to seal the top and cover the part that sticks out through the roof. Thanks for the tip!

 

[Stefan1972]

Why cast at all? Seal the channels with insulation at the top and cover with sheet metal if you're not going to use it yourself. That way, someone else can still take over if they want to use it.

 

[Hajjen]

I was worried that the rest of the chimney would collapse over the years. But maybe it's enough to seal the top and cover the part that sticks out through the roof. Thanks for the tip!

As the previous user mentioned in passing, how is it with ventilation? If any part of the ventilation goes through the chimney (very common in older houses), it's inadvisable to close it off before you have an alternative ventilation solution. Maybe you have that, but just wanted to add it too .

 

[Lilametallic]

Why pour at all? Seal the channels with insulation at the top and clad with metal if you're not going to use it yourself. Then at least someone else can take over if they want to use it.

I have very little knowledge about chimneys but this information I've received from other homeowners. They probably saw a complete casting as a better option to avoid worrying that it would fall apart? Personally, I have no use for it, and the stove that remains I will dismantle as it is not in a suitable area.

As the previous poster mentioned in passing, what about ventilation? If any part of the ventilation goes through the chimney (very common in older houses), it's inappropriate to seal it off before you have another ventilation solution. Maybe you have that, but just wanted to add that .

The previous owner has installed vents in all rooms, so the ventilation is good. I plugged the chimney when I did a radon measurement and the levels were above acceptable. I'll take the tips about plugging with something that can be removed if you want to use it in the future. Thanks!

 

[Stefan1972]

It's probably very unusual for chimneys to completely collapse. It's mostly in abandoned houses where they've been without a roof for 50 years, where you see everything lying in a heap at the bottom. If you prevent decay at the top so it stays dry, it will probably stand for a good many years. The worst thing in old houses is otherwise chimneys that have been torn down or destroyed. It's incredibly expensive to start from scratch if some future owner still wants flues. If it's still standing, that is. In my house from 1900, they've removed one of the chimney stacks, and it's a real shame. I would have loved to have a tiled stove in the corner of the living room where it fits best and has stood before.

 

[Lilametallic]

It is probably very unusual for chimneys to completely collapse. It's mostly in abandoned houses where they've stood without a roof for 50 years that you see everything lying in a pile at the bottom.
If you prevent decay at the top so it stays dry, it should probably stand for many years. The worst thing in old houses is chimneys that are torn down or destroyed. It's incredibly expensive to start from scratch if a future owner still wants flue channels. If it still stands there, that is.
In my house from 1900, they tore down one of the chimney stacks and it's a real shame. I would have really liked to have a tiled stove in the corner of the living room where it fits best and had been before.

Okay. Yes, this chimney has probably stood since the 60s without a cap, which was noticeable when it rained and it smelled damp in the basement. I have arranged a cap and used a dehumidifier at the same time as I did the drainage. Today the environment is pleasant and dry. I'll take a closer look at the plugging with cloth later when time permits. Thanks again!

 

[BSOD]

The day it's time to replace the roof, one might consider whether to remove the upper part that sticks out above the roof, to simplify the roofing process. Possibly.

Future owners of the house might want to install a kamin, then the chimney might suddenly be valuable.

 

[Patrik Hazard]

Are there no flues in it that are used as natural draught channels?
What type of ventilation do you have today? Is it natural draught or mechanical ventilation?

Consider if you might have any use for the flues in the chimney. They can serve as shafts for electricity, pipes, and ventilation for future renovations!