Double Wall Pipe Inside the House

[Simonkenton]

I am going to install a Jotul Oslo in a room with a cathedral ceiling. The pipe will run straight up vertically from the stove.
The length of pipe inside the house will be 11 or 12 feet.

I have been told that it is recommended that I use double wall pipe inside the house. Would 12 feet of single wall pipe work ok inside the house, or is it mandatory that I use the double wall?
I am not familiar with the double wall pipe for inside the house. Is there insulation between the 2 walls of the pipe, or what?

 

[Jags]

Newer stoves like the Oslo are stingy with heat going up the stack. 12ft of single wall is going to rob quite a bit from what is already "just enough". Go with the double wall from stove to ceiling. Just one dudes opinion.

 

[HotCoals]

For that much pipe I agree with Jags.

Now get your wallet out and dig deep! lol

 

[begreen]

+2 on the double-wall connector. It's generally recommended for runs over 8ft. Double-wall connector has just an air gap, no insulation like double-wall class A chimney has.

 

[Simonkenton]

So I need a double wall pipe, but not pipe with insulation in it. Can you give me a link to this type of pipe? I just looked up some double wall black pipe, I don't know if it had insulation in it, or not, but it cost $35/ foot! Expensive, but if that is what I have to buy I will buy it.

 

[mol1jb]

Menards carries it.

 

[Simonkenton]

http://www.menards.com/main/heating...rvent-8-x-36-pipe-length/p-1936090-c-6890.htm

I guess this is it. Black double wall pipe. It does not have insulation, only an air space between the two pipes. Inner pipe stainless steel. Looks like a high quality product.
Three feet for fifty bucks.

I am down in Dixie and there are no Menards down here but I am sure I can find it somewhere.

 

[mol1jb]

Ya thats it. Air space between pipes. I just installed some on my setup. I liked it very much.

 

[DougA]

I was in the same situation a few months ago and got the same answer. Double wall is more expensive yes but the clearance goes down to 6" from combustibles which makes a huge difference during the install.

 

[Simonkenton]

Well, you want to dance to the music, you got to pay the piper. I want a proper install. Plus, I am running the pipe up through a cathedral ceiling, and have to run the pipe past some giant 4x8 exposed rafters, so the 6 inch clearance with double wall pipe will make that easier.
I have had 7 wood stoves, and have been burning for 35 years but have never used double wall pipe inside the house. For example, my current stove is an Irish Waterford, and there is only 4 feet of pipe inside the house, so the idea of double wall with this install is a moot point. I did have a 1988 VC Resolute in a log house I built down in Georgia, had 10 feet of single wall inside the house and that stove worked great. But, that was a pre-EPA stove.
A different century, and a different stove.

I will get the double wall pipe for my new Jotul, who knows, I may mail order it from Menards.
I went up to visit my buddy in South Dakota several years ago, we built a fence in his back yard, any time we needed 2x4s or decking screws, it was "Go to Menards."
I had never heard of 'em.
We have no Menards down here in Dixie.

 

[Simonkenton]

http://www.lowes.com/pd_199534-8517...entURL=?Ntt=double+wall+stove+pipe&facetInfo=

Look here! Here is the same Selkirk pipe, down here in Dixie at Lowes, and it costs 20 bucks more!

Y'all Yankees get the good deal and they stick it to us Rebels. Go figure. I might just mail order from Menards.

 

[Jackfre]

In the early 90's Brookhaven Nat'l Labs did a study on oil fired vent systems. I knew the two lead engineers and in a conversation with them one day the lead Engineer on the project offered that regardless of configuration of the system or vent the greatest single benefit to system operation was an insulated vent connector.

The stove produces what it can. Trying to get more by using single wall pipe encourages reduced flue gas temperatures which can lead to creosote formation. Just not worth trying. Also, from a value proposition you are talking about mild steel single wall vs SS double wall with a real warranty