I am currently running a six inch stove pipe into a chimney lined with 7 inch ID terracotta. We are accumulating too much creosote at the top of the chimney. The terracotta is insulated, but obviously not very well.
I want to insert a stainless steel liner into the terracotta. I would like to insulate it as well but may have to undersize the flue liner just a bit to get it to go in.
Would the benefit of insulation will offset the negative of undersizing? I know a woodstove flue should have 1/2 inch of insulation but that would be a tight fit in a 7" ID terracotta. Should I go with 1/4 inch insulation and a six inch liner, or go with 1/2 inch insulation and drop down to 5.5 inch liner? Any thoughts?
I want to insert a stainless steel liner into the terracotta. I would like to insulate it as well but may have to undersize the flue liner just a bit to get it to go in.
Would the benefit of insulation will offset the negative of undersizing? I know a woodstove flue should have 1/2 inch of insulation but that would be a tight fit in a 7" ID terracotta. Should I go with 1/4 inch insulation and a six inch liner, or go with 1/2 inch insulation and drop down to 5.5 inch liner? Any thoughts?