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Old 09-03-2011, 02:45 PM   #1
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when to replace chimney


Hi, I have a large chimney that needs a new crown and replacement of bricks several rows below crown from mortar failure & brick deterioration. Some of the other bricks in rest of the chimney have some degree of spalling & some look as if the may need to be replaced & some areas of mortar will need to be repaired. When I say "some" I am estimating 5%. So, my question, do I replace the entire chimney of replace what needs replacing. Estimates from a very reputable company were $8500 for a complete replacement and 3700 or a new crown, replace damaged brick & mortar below crown, spot replace bricks & mortar in rest of chimney. There would be an additional fee of $300 to seal entire chimney next season. I know its hard to say when, but... generally speaking, when is it beter to replace the entire chimney over repairing it? regards, Michael S.

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Old 09-07-2011, 12:54 PM   #2
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when to replace chimney


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Originally Posted by marchaels View Post
Hi, I have a large chimney that needs a new crown and replacement of bricks several rows below crown from mortar failure & brick deterioration. Some of the other bricks in rest of the chimney have some degree of spalling & some look as if the may need to be replaced & some areas of mortar will need to be repaired. When I say "some" I am estimating 5%. So, my question, do I replace the entire chimney of replace what needs replacing. Estimates from a very reputable company were $8500 for a complete replacement and 3700 or a new crown, replace damaged brick & mortar below crown, spot replace bricks & mortar in rest of chimney. There would be an additional fee of $300 to seal entire chimney next season. I know its hard to say when, but... generally speaking, when is it beter to replace the entire chimney over repairing it? regards, Michael S.
If yours is like mine you may end up replacing it anyway, or at least some of it. I started out with the intention of fixing a couple of courses of brick and ended up having to take the thing down to the roof and build it back up. I also found every tile down to the firebox was cracked and needed replaced plus the top two tiles of the boiler flue.

The estimate I got for the work was $8500 also, but that was only based on what they and I initially saw. I'm sure it would have been nearly double that once it was all said and done. I ended up doing it myself, but I don't recommend this unless one is familiar with the dynamics of a chimney. I'm not a mason by any means, but I can put up a block or brick wall properly, just takes me longer. I did it myself and then put in a new insert and liner, all for just under $4000. It was not a fun job.

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Old 09-07-2011, 07:36 PM   #3
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when to replace chimney


is this chimney for a fireplace or boiler? If its for a boiler, consider up grading to a newer system that doesnt need a chimney. Be about the same price as replacing the chimney. We did that in a house this year and the homeowner gained a new closet on every floor.
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