backfill a chimney wall??

Old 09-24-12, 07:21 AM
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backfill a chimney wall??

Hi, im new here, just had a question if anyone can help me out. When my grandfather built his chimney years ago he left about 4 ft unfinshed. We have a bunch of brick in the yard and I was thinkig about laying the few more courses my self to finish it up.

From what i was looking at the other day, I would say there is about an appx 4-5 inches in between the inside of the brick and the outside of the flue that he just backfilled with mortar.
Is this ok? Is this the way its supposex to be? Or should the brick be much closer to the flue with maybe like a half inch of mortar to adhere them. To make it easier id like to just follow his work straight up and then backfill it, if that would be ok. If not im sure I could take it in a few inches and brick it right on the flue.

Any suggestions?
Old 09-26-12, 12:51 PM
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Masonry Chimney Construction

There are some guidelines for chimney construction. Depending on it's use, it may need to be relined.

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