Brian G. NY
Well-known Member
I was bragging about not having to clean my chimney for 14 years a week or so ago. I am convinced that another reason I don't have creosote is that I seal off the cleanout hole completely.
If you have a cleanout in your chimney with the common cast iron door, it is far from air tight. The draft of the hot chimney above draws cold air in through that door and cools the smoke resulting in more creosote formation.
I fill a plastic bag with fiberglass insulation and stuff it into the chimney cleanout hole to prevent any outside air from entering.
Seems to work for me.
If you have a cleanout in your chimney with the common cast iron door, it is far from air tight. The draft of the hot chimney above draws cold air in through that door and cools the smoke resulting in more creosote formation.
I fill a plastic bag with fiberglass insulation and stuff it into the chimney cleanout hole to prevent any outside air from entering.
Seems to work for me.