Cheapest way to put in a chimney

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ColdHouse
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Post by ColdHouse » Sat. Dec. 25, 2021 6:07 pm

I am thinking of adding a coal boiler next to my oil boiler. I want to run a straight run up thru the roof. What materials are my best bet? I was thinking the first 10 or so feet I could use just about anything and when I hit my ceiling change to double/triple wall pipe to go thru an attic crawl space and finally the roof. Pretty much a straight shot straight up. Any suggestions are appreciated. Least cash outlay for a safe functioning chimney is my goal.

 
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Rob R.
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Post by Rob R. » Sat. Dec. 25, 2021 6:59 pm

Masonry chimney would be my choice.

Have you considered just using the current chimney?

 
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freetown fred
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Post by freetown fred » Sat. Dec. 25, 2021 7:17 pm

I'd be checkin masonry compared to triple-wall $$$$$$$$$ Masonry being your lifetime choice.

 
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2001Sierra
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Post by 2001Sierra » Sat. Dec. 25, 2021 7:44 pm

Masonry for coal is the best choice by far. Mine is 8 x 8 with refractory cement and each joint for the tiles as well as a skim coat over the footing before setting the first tile. 40 years and going strong. Also insulated between the tiles and block with mineral fill insulation.


 
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McGiever
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Post by McGiever » Sat. Dec. 25, 2021 9:50 pm

What type chimney build is on the oil now?
If masonry Some would use the oil chimney for the coal and power-vent the oil then.

 
ColdHouse
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Post by ColdHouse » Sun. Dec. 26, 2021 5:54 am

The oil boiler is galvanized to the ceiling then Stainless Steel up to an thru the roof.

 
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dbsuz05
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Post by dbsuz05 » Sun. Dec. 26, 2021 11:46 am

Least amount of cash outlay.... run the coal boiler and oil boiler into the same chimney. It was fine for 60 years to be piped that way. When your running a coal boiler you don’t need the oil boiler. And visa versa! Yes not exactly legal per insurance. But it is still done that way in many homes I have seen.

 
fig
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Post by fig » Sun. Dec. 26, 2021 5:57 pm

More then one way to skin a cat. I bought a used wood stove someone was selling with the double wall insulated chimney. It was barely used. Paid $500 for it all. Sold the stove for $500. Kept the chimney. It was basically free apart from a little elbow grease. It was from an elderly couple and I had to remove it from their house.

I ran it through the center of the house.I do have a masonry chimney on the west end of the house and have a coal furnace in the basement hooked up to it. I’m using the upstairs stove though with good results so far in this mild winter.


 
gardener
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Post by gardener » Wed. Dec. 29, 2021 10:22 am

ColdHouse wrote:
Sun. Dec. 26, 2021 5:54 am
The oil boiler is galvanized to the ceiling then Stainless Steel up to an thru the roof.
dbsuz05 wrote:
Sun. Dec. 26, 2021 11:46 am
Least amount of cash outlay.... run the coal boiler and oil boiler into the same chimney. It was fine for 60 years to be piped that way. When your running a coal boiler you don’t need the oil boiler. And visa versa! Yes not exactly legal per insurance. But it is still done that way in many homes I have seen.
Would that accelerate corrosion of the metal chimney?

 
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Rob R.
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Post by Rob R. » Wed. Dec. 29, 2021 10:35 am

Yes, coal will be more corrosive to the stainless chimney than the oil burner. Especially if it is 304 stainless rather than 316.

 
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dbsuz05
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Post by dbsuz05 » Wed. Dec. 29, 2021 11:57 am

gardener wrote:
Wed. Dec. 29, 2021 10:22 am
Would that accelerate corrosion of the metal chimney?
Yep! But I heard cheapest way. And sounded like the boiler is wanted to be in place now!

 
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Rob R.
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Post by Rob R. » Wed. Dec. 29, 2021 12:42 pm

dbsuz05 wrote:
Wed. Dec. 29, 2021 11:57 am
Yep! But I heard cheapest way. And sounded like the boiler is wanted to be in place now!
When heating oil is getting close to $4 it is a good time to switch. :yes:

When I first put my coal boiler in I was concerned about oil backup. Only needed it twice in 10 years, and both times it was due to a control problem (not coal related).

Last year I ripped out the oil boiler and don’t miss it.

 
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Post by StokerDon » Thu. Dec. 30, 2021 11:01 am

ColdHouse wrote:
Sat. Dec. 25, 2021 6:07 pm
I was thinking the first 10 or so feet I could use just about anything and when I hit my ceiling change to double/triple wall pipe to go thru an attic
I would stay away from Triple wall for a coal burner. You will need whatever chimney you use to be able to maintain a good draft. Triple wall uses air as an insulator and it will loose heat quickly killing the draft. I think it's meant for wood burners where a lot of heat is dumped into the chimney.

-Don

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