I thought that I had posted this but like so many things in life thoughts are just that they are never actions
After getting this house many things have required an upgrade. Much of which has been due to the house being left vacant for a number of years.
It came with an Earth Stone wood stove made in the early 90s. First off the chimney pipe was rusted and burned out beyond belief from the transition box through the roof and out was 8" triple pipe making it 12" od ,
But it did not extend above the peak of the roof like it should. It was so rusted out that the center pipe was non existent. What was supposed to be a transition box ws nothing more than a 4" deep 16" diameter metal can also rusted out. Rain had run down the pipe for many years leaving a thick layer of rust on the top of the stove.
SO I removed everything in 2016 we relied on the heat pump for heat the first winter.
I refurbished the stove and painted it with KBS Heat resistant paint.
My wife moving the 300 lb stove on my 2 wheeler
the new transition box 16" x16" x 16" tall hangs down 4 inches under the ceiling and is wrapped with 2 layers of concrete backer board.
If your are thinking that the transition box extends almost to the roof decking you would be correct.
new SS 8" triple pipe installed and bagged