Should I insulate my liner?

[arnermd]

Hello All,
Looking for some advice to reduce buildup in my liner. I burn 4 cord a year and typically remove 3-5 gal of shiny black crumbs per year after cleaning. Seems excessive to me and wondering if it would be of benefit to insulate the liner, at least the top 2-3 ft or so where the majority of the buildup seems to be. See my installation details below. I typically do not have any draft issues, even with a cold stove on a warm day. I typically measure 0.1 - .18 iwc with a hot flue.

The current liner is 8" uninsulated, corrugated, single wall stainless inside a masonry flue. My VC manual gives the option for 6 or 8" flue but requires
8" to run with the front doors open which I occasionally do.

I have been running this stove for 13 seasons now and the amount of build up has been pretty consistent. I have been getting just under 2 seasons out of my cats and nearly always burn with the cat temps >800, usually over 1000-1200 with full fuel load and occasionally over 1500F when things get out of hand.....

Any suggestions would be appreciated.

 

[EbS-P]

Yes that is excessive. Insulation would help. How long does your wood sit stacked? Do you ever measure the moisture content?

A cat should last 10000 hours. Two years seems short.

The draft seems quite high.