I will connect a new wood stove to a new flue liner in an existing chimney channel. The chimney channel comes down from the floor structure, so the stove's pipe must connect straight up to the flue liner. How do I attach the bottom crown to the chimney stock? Since I can't make a hole in the chimney stock due to the floor structure. I want to avoid making a hole above the floor structure.
Perhaps one can reduce the chimney stock somewhat, then the question is how to do it? Possibly drill flat steel into the chimney stock and hang it on the other end with a threaded rod fastened with an anchor in the ceiling (chimney stock) to hold the new bricks in place?!
The base cone is intended to be used if you connect the smoke pipe from the side into the chimney, as is normally done. You can see what it should look like on soliduct's website. In your case, I would simply mortar the liner into the channel at the bottom and insert the smoke pipe into the liner and seal it with rope. So, skip the base cone entirely. However, if you have a meticulous inspector during the inspection or future fire safety checks, you might have to explain how you envisioned this solution since you are deviating from the material's installation instructions and thereby its type approval.
But in any case, be careful and meticulous with this installation. Ceiling penetrations are absolutely the most common place for a fire to spread from the flue to the rest of the house. Furthermore, it's certainly not ideal to have 50kg of vermiculite fall into the kitchen if some stones come loose from the chimney. Mortar typically has terrible tensile strength... As mentioned, it is not intended for the liner and base cone to be used as in your case at all.
Attaching an image of how it looks in reality.
The house is from the 1700s, so the channel has been used for a long time, but not in the last 30 years. Therefore, the risk of the fire spreading to the joists is non-existent. Additionally, I will have an insert pipe and vermiculite that make it even more difficult for the joists to catch fire.
The question is just how to secure the insert pipe at the bottom and at the same time stop the vermiculite?
Aaah okay, has there been a tiled stove there before?
I would have connected the insert pipe to a built-in flange, I don't know how without seeing it, but then you just stick the pipe from the stove into the flange! You'll have to chip out the mortar as best as you can and then place a board underneath to hold it in place until it hardens! Maybe you should insert some rebar or similar on the side of the channel so you get some strength because, due to gravity, it will want to slide down!
I don't know how correct this is but it's a solution, as long as it is airtight!
I can inform you that I renovated a chimney from the late 1800s, and the house has been around it since then, but I had to remove a couple of joists that were embedded (as they did at that time) in the chimney plaster! Without that, I wouldn't have gotten it approved!
I don't think there has been a kakelugn there before, as they didn't exist in the 18th century (as far as I understand, it must have been an open fireplace with some kind of hood where they cooked the food. Yes, it must be that I'll connect the insertion collar to the insert tube with stainless pop rivets, drill in some reinforcing steel, make the holes slightly larger than the steel so I can apply cement paste in the hole before pushing in the reinforcing steel. Then I can also fix the collar to the steels, the channel is quite large 250x270 mm so it should fit. Mix the mortar very dry so that it doesn't run down when I push it up, possibly you can then push up some mineral wool to make sure the mortar doesn't run down. Then finish it neatly. How do you get the tube in between the wood-burning stove and the collar when those two points are fixed and the tube is a little longer, since it has to go into the collar?
Now I'm just speaking from the perspective of how my fireplace looks and my installation!
The connection out from the fireplace is so short and the pipe goes so far into the collar that you can push up the pipe, then place it under the fireplace, alternatively angle the pipe! Then pull it down over the fireplace and finally seal around the pipe in the collar with that weird cord I just forgot the name of!
Just remember that in order to insert the pipe into the collar and then attach it to the fireplace, the liner pipe must be mounted externally on the collar; otherwise, it will be in the way of the pipe!
Have you bought the liner pipe? Diam?
I haven't bought the insert pipe yet. From the wood stove, it's a Ø125 pipe, so I guess I'll use the same diameter for the insert pipe.
How do you seal between the masonry socket and the insert pipe?
