New Chimney Size ?
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coaledsweat
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Rob R.
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A friend of mine is a chimney mason, he said the round liners do perform better. There are no dead zones within the round flue and less turbulence. My dad has a 30' exterior chimney with a round 7" flue, his barometric damper is usually partially open even on mild days, in the cold weather when he runs the coal stove hard it is nearly wide open.Don_t_Say wrote:Thought I read somewhere that a round liner is better than a square liner?
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LoschStoker
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The liners expands from heat , but the blocks or brick don't.
If you see a chim. that the top block(s) or brick(s) have lifted, one cause is they mud the block
and liner together on a taper to seal the top and for rain to run down the out side.
When the liner gets longer (from heat) something has to give.
A form is easy to make with a piece of plywood and something round larger then the liner
(if using round liners). They make them for 8X8 liners.
If you see a chim. that the top block(s) or brick(s) have lifted, one cause is they mud the block
and liner together on a taper to seal the top and for rain to run down the out side.
When the liner gets longer (from heat) something has to give.
A form is easy to make with a piece of plywood and something round larger then the liner
(if using round liners). They make them for 8X8 liners.