This^^^
Local fireplace contractor was "too busy"(he didnt want to deal with custom install) so I did the research mostly on Simpsons Dura Vent web site and made sure eveything was well above code for materials and clearances.
I used Simpson Dura Vent double wall insulated for entire chimney and ceiling box. I did a 15? offset in attic to avoid going thru roof at the peak as the parts would have to be custom made. Hercules Industries was willing to make the part but price and lead time were too long/high.
Once I had my design and parts list I ordered Simpson Dura Vent pipe thru local supplier to builders.
Once parts arrived install only took half a day and most of that was spent making sure ceiling box was just right.
You can stand next to stove and reach up and touch chimney without burns. Down close to stove the double wall is pretty hot but not the instant blistered burn like touching the stove.
We burn 4-6 cords a season and wood stove is our primary heat source for 2200sf ranch style log home.




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