Chimney pipe ID / double or single wall?

[nickmealey]

Hey there,

I'm rebuilding an old shop and I have some existing sections of chimney pipe that I was hoping to get identified. It's a 6" pipe. I've tried to find any kind of markings but haven't seen any. Maybe clean off the instead and really hunt for some? There are 8 "fins" on each section, if that's helpful.

I'm also trying to decide if it's worth going for a double or single wall pipe going up to the roof (which I need to buy). My stove is fairly small and the height to the roof peak is around 11-12ft (depending on position relative to the peak). It would go directly from the stove to roof within the interior of the shop. The shop is uninsulated and was hoping to get something in there to help keep it warm while working. I was reading that double wall can have better draft but it seem single wall would transfer more heat into the space. Curious about that.

Appreciate any help offered!

 

[ctreitzell]

we tested single wall when we installed our stove

then we immediately went for dbl wall inside

single gets too hot for my liking

I was thinking like you, why lose the heat going thru the single wall? I changed my mind once I saw it working in front of my face...

 

[stoveliker]

I would say it depends a bit on what stove you have. If it's a burn barrel (or any old stove, especially without a baffle) that pushes an inordinate amount of heat up the flue, use single wall.

If it's a modern stove, use double wall. Your draft won't be great so preserving the (less) heat that modern stoves exhaust into the flue may be needed to have sufficient draft.

 

[nickmealey]

Thanks for the reply. It's definitely an old stove so that's some good info. No flue. So I'm guessing I regulate the draft with the door?

 

[begreen]

The regulators on the stove door control the air supplied to the fire. If the draft needs regulation too, this is done with a key damper in the stovepipe that connects the stove to the chimney pipe. This stove needs 36" clearances in all directions unless proper, NFPA 211 wall shielding is used to protect the walls.

 

[nickmealey]

Thanks that makes a lot of sense.

Any thoughts on the make/model of this pipe?