Duravent adapters

I’m putting a wood stove in my shop. The chimney is a through the wall Duravent triple-wall, with the proper thimble. Inside, from the thimble, I want to go 6’ horizontal and then 8’ vertical to the stove. The horizontal section will be less than 18” from the ceiling, so I need double wall. I’d like to avoid paying for double wall for the 8’ vertical down to the stove (I have some single wall already). Do I need an adapter to go from Duravent double wall to generic hardware store single wall? Looks is not an issue.

 

I'd say no. I run single wall straight into my triple wall, that goes through my thimble.

I'd be more concerned with 6' of horizontal, than an adapter. That's a lot of horizontal run. Draft could be an issue.

 

Thanks - that is good to know. Yes, I’m concerned about the 6’ horizontal, but am willing to give it a try.

 

Do your best to give it some upslope. An inch or so, may help.

 

Seems like you could do two 45s and avoid or reduce that horizontal.

 

Outside progress (yeah, I know the housewrap is a mess)

 

Only one fire so far, but it drafted well. I might move it closer to the wall, reducing the angle, but for now it is fine here. This was my first experience with both triple and double wall pipe. Overall happy with how it is, for now.

 

Can I make a suggestion? If there's already something doing this I don't see, my apologies, but I would suggest running a piece of wire, or that metal strapping with a lot of holes in it, around the pipe, by the 90, and run that up to the rafter, just to help support things a bit. Expansion and contraction will cause that single wall to move a bit, in my experience, and I'd hate to see that give out, being that it's at an angle like that. Otherwise, enjoy the heat! Oh, that's also exactly how my single wall goes into my triple wall.

 

Yes, it looks a bit sketchy, but I do have a wire up there. I plan to make it two wires, each off at an angle, to eliminate any potential side to side movement if bumped. Quite a few screws in place, too.

 

Seen the screws. As long as you have a little support, it should be fine. I just notice that my single wall starts backing out of the triple wall a little bit, over time. I'm in a habit of bumping it into the triple wall once a day, just because. Nothing major, only like a 1/4" maybe, but I only have 4 ft vertical and 2 foot horizontal before it goes into triple wall. So, there's not a lot of weight in mine, plus no angle. If you have a wire up there, that should be good though. 2 would be better piece of mind.

 

Those Tempwood stoves sure were popular in New England. One of my sisters still has/ uses one.

 

This was my in-law’s, and then was our primary for 10 years. Has been in storage a dozen years now. Dead-simple design.