I've taken on the task of installing a stove myself (connected through the back to the chimney) and as per usual, nothing goes smoothly. I have now drilled into a flue/pipe that wasn't supposed to be there.
The chimney sweep has been here, pressure tested and inspected the chimney, among other things by going down with a camera, it looked fine. According to the image below, the suitable channel is the one in the middle with the tall pipe (previously connected to a wood/oil furnace).
The stove will be on the side where the smaller pipe comes up. That channel is a ventilation channel that ends a little bit below the ceiling. According to the chimney sweep, it is usually solid chimney below and therefore should "just" be drilled into the middle channel... but it wasn't.
I have now entered the added ventilation pipe (checked all the pipes from above to ensure none have turned in).
Can I brick up this "dead" pipe at the top and bottom and continue with my hole to the middle pipe?
Would it work to spray in foam first so the bricks have something to rest on until the mortar has set?
I had the same bad luck. So I kept drilling to the right pipe and inserted a horizontal steel pipe with a suitable diameter that was level with the wall. Worked excellently.
It sounded like a good solution BUT now when I was drilling up to the correct channel, two standing stones between the channels came loose (apparently only a stone's gap). Instead of a hole with a diameter of 180mm, I now have about half a meter. Never ending.
It's probably sealed, but I don't want smoke to rise in a space that can't be cleaned, so now I'm back to masonry. If it can be solved through the outer hole, it will be exciting to see, otherwise, I might have to tear up a larger hole, it must be completely sealed between the channels.
Any tips?
/Frustrated but not surprised
TThomas_Blekinge said:
I had the same bad luck. So I continued drilling to the correct pipe and inserted a horizontal steel pipe with a suitable diameter that aligned with the wall. Worked great..
The solution: stone wool pressed downwards and upwards with a substantial amount of mortar with small pieces of brick on it. Had to support upwards with the mortar on a thicker cardboard, if it gets stuck it doesn't matter, it doesn't hurt if it burns up. Called a stove shop and that's what they did in similar situations
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