I am curious about how noticeable an increase in draft one could expect from changing from uninsulated to an insulated liner. All other factors being equal.
Insulated vs uninsulated liner
- Thread starter Ctwoodtick
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The increase in draft is not the biggest advantage of an insulated liner. The benifits are increased saftey, reduced creosote buildup, and code compliance. Yes if your flue is cooling considerably it will hurt your draft of course. But generally if you have a substantial dr as ft problem insulation alone wont fix it.
I totally agree always insulate but to me the increase in draft is one of the lesser benifits
Yep, atmospheric pressure differential has a lot more to do with draft than insulation. Keeping the pipe hot is a good thing to keep it from collecting crap. Insulation plays in that game.
Other than cost, is there a reason or circumstance that a person would opt for an uninsulated liner?Seems like a no brainer.
Usually it is cost lack of knowledge or space inside the old liner that keeps people from insulating. The space issue can usually be dealt with by removing the old liners but again that adds cost.
Im looking for some rock wool or granular mineral insulation to insulate a new masonry chimney while its going up ,between the block and the flue liner. Iv heard menards carries it but there is none around here. Was wondering if regular fiberglass wall insulation would work but i think it melts at high temps.
Yes regular 16in chimney block with the clay liner inside. Would like to insulate between the block and the liner as there is 1 to 2 inches of space there.
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