u/Gain_Train_Painz

Looking for some opinions before I buy my stovepipe.

My barn is fully insulated with closed-cell spray foam. Behind the stove, I built a ventilated noncombustible wall with a 1½” air gap, covered in ½” Hardie board (picture attached).

I’m trying to decide between single-wall and double-wall connector pipe. I know double-wall generally drafts better, keeps flue gases hotter, and can reduce creosote, but it’s also significantly more expensive. Single-wall is much cheaper and throws more heat into the room.

I’m usually a “buy once, cry once” guy, so I don’t mind spending more if it’s actually worth it. But if the benefits of double-wall are minimal in my setup, I’d rather save the money.
For those with experience, which would you choose and why?

Thoughts on how the non combustible wall turned out? 14’x5’

Steel studs installed on face to create 1.5” air gap, cement board panel, and cement board lap siding. 1.5” air gap at bottom of panel, and a 3”+ air gap at the top since it’s not visible anyways.

Finished product will be Wood stove the wood stove sitting on an 18” stone hearth with black granite top, firewood storage underneath and black flue pipe running up through the roof. Should look really awesome and not burn down the barn!

Let me know your thoughts on the wall!