Attached is a diagram of my proposed stove installation. The brick wall, foundation wall, chimney and terracotta are all already there. I need to install the liner, tee, adapter(?), stovepipe, stove and hearth.
One of my constraints is that the existing chimney is 24” deep into the wall and my chimney is 17’ tall. Also, the existing breakout is only 14” from the ceiling. In order to meet the requirements that the chimney have 8’ in height for every one foot in horizontal run, and 18” clearance from the ceiling, I propose to have the stovepipe and chimney liner run at a 30° angle from the vertical stovepipe on top of the stove to the snout. This reduces the horizontal run significantly, as well as increases the clearance from the ceiling.
Questions:
1. Angle of joints in liner: I have seen comments that 45° joints are not permitted in chimneys, but 30° is ok within the chimney. Can someone confirm. I think 30° might be better anyway given the size of my existing opening (if I went to 45° I would have to knock out more bricks and cinders, or have a longer horizontal run). Is there evidence that draft on a 30° run would be significanlty better than 45°?
2. SS liner through cinderblock: Can someone confirm rigid 304L or 316L chimney liner should be used to pass from the tee through the cinder block and brick.
3. Chimney adapter: Can someone also confirm that a chimney adapter is required between the chimney liner and the stovepipe. The whole thing is non-combustible, but I've read elsewhere that there are concerns about overheating the blocks.
4. 1/4" blanket insulation: I propose to insulate the tee, tee snout and chimney liner that passes through the brick and cinder block with multi-layer quarter inch blanket insulation (will wrap at least twice, up to 4 times). Can someone confirm this works. (I want to use quarter inch because I will buy 25' of this for my SS flex liner and will have plenty left over. I plan to double-wrap. I need quarter-inch because I am running 6" SS through a 7" ID terracotta and don't have enough room for half-inch).
5. 60° stovepipe elbows: I have not seen 60° stovepipe elbows available for sail online. I only see 45 and 30. Any thoughts?
6. Finishing adapter at 30° angle from wall: Thoughts on how I finish the chimney adapter if it is sticking out at a 30° angle from the brick wall protection? I have searched but haven’t found products online. Wondering if I would have to try to weld sheet metal together to create a custom solution, but I have never welded before, so that isn’t optimal.
![[Hearth.com] Proposed stove/flue/reline install](https://www.hearth.com/talk/data/attachments/269/269320-7a19071c8b68e86d102db795676b1226.jpg?hash=K8e-tSuxGy "[Hearth.com] Proposed stove/flue/reline install")
![[Hearth.com] Proposed stove/flue/reline install](https://www.hearth.com/talk/data/attachments/269/269321-af9665b52c5c5a0d4f10bbad7a7902d4.jpg?hash=eqjKi-Yct4 "[Hearth.com] Proposed stove/flue/reline install")
One of my constraints is that the existing chimney is 24” deep into the wall and my chimney is 17’ tall. Also, the existing breakout is only 14” from the ceiling. In order to meet the requirements that the chimney have 8’ in height for every one foot in horizontal run, and 18” clearance from the ceiling, I propose to have the stovepipe and chimney liner run at a 30° angle from the vertical stovepipe on top of the stove to the snout. This reduces the horizontal run significantly, as well as increases the clearance from the ceiling.
Questions:
1. Angle of joints in liner: I have seen comments that 45° joints are not permitted in chimneys, but 30° is ok within the chimney. Can someone confirm. I think 30° might be better anyway given the size of my existing opening (if I went to 45° I would have to knock out more bricks and cinders, or have a longer horizontal run). Is there evidence that draft on a 30° run would be significanlty better than 45°?
2. SS liner through cinderblock: Can someone confirm rigid 304L or 316L chimney liner should be used to pass from the tee through the cinder block and brick.
3. Chimney adapter: Can someone also confirm that a chimney adapter is required between the chimney liner and the stovepipe. The whole thing is non-combustible, but I've read elsewhere that there are concerns about overheating the blocks.
4. 1/4" blanket insulation: I propose to insulate the tee, tee snout and chimney liner that passes through the brick and cinder block with multi-layer quarter inch blanket insulation (will wrap at least twice, up to 4 times). Can someone confirm this works. (I want to use quarter inch because I will buy 25' of this for my SS flex liner and will have plenty left over. I plan to double-wrap. I need quarter-inch because I am running 6" SS through a 7" ID terracotta and don't have enough room for half-inch).
5. 60° stovepipe elbows: I have not seen 60° stovepipe elbows available for sail online. I only see 45 and 30. Any thoughts?
6. Finishing adapter at 30° angle from wall: Thoughts on how I finish the chimney adapter if it is sticking out at a 30° angle from the brick wall protection? I have searched but haven’t found products online. Wondering if I would have to try to weld sheet metal together to create a custom solution, but I have never welded before, so that isn’t optimal.
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