Double wall pipe is expensive as hell. Thats why I went with single wall. Its a metal building and isnt touching nothing combustible.
I was going to do double wall if I decided to put OSB on the ceiling.
And that is concrete paneling
Penny wise and pound foolish.
Chimneys have to live up to corrosive acids, creosotes and if it catches on fire really high temps. Double / tripple wall chimney takes the abuse very well. The multiple walls keep the temp up especially were exposed outside. This mitigates creosote build up and resulting chimney fires.
Not only did you use single wall stove pipe, you used the cheapest **** they sell. The ziplock pipe is so thin that two to three years max for regular use, less cause your exposing it to wind/rain/condensation or creosote=chimney fire.
Dad had a barrel stove in his shop. That zip lock failed twice between the chimney/stove and let me tell you it makes for a really exciting time when it comes down. In just a couple of years that **** turned to rust flakes and desintigrated. And his set up had a proper chimney(which never failed) Get some heavy gauge welded seam stove pipe at least. (It's not cheap either) no problems after that.
Installations like yours is why many insurance companies won't insure building with wood stoves.