Tapering For A Chimney - Masonry - Contractor Talk

Tapering For A Chimney

 
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Old 07-22-2008, 11:07 AM   #1
 
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Tapering For A Chimney


Hello! I have to say that it's been some many years since I worked on a chimney. I'm building a house and we ran into a question about the chimney that I wasn't sure how to answer. I hope I can make this make sense:

The damper on the chimney is 36 inches but the flu opening is 13 inches; so, we need to taper the chimney from 36 to 13. What is the angle/degree of taper and how high do we need to go with it so that it will be stable? Also, should I put in firebrick above the damper through the taper?

Thanks so much for your help!!
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Old 07-22-2008, 11:35 AM   #2
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Re: Tapering For A Chimney


http://www.vestalmfg.com/PDF/FireplaceThroatDampers.pdf

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Old 07-22-2008, 01:22 PM   #3
 
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Re: Tapering For A Chimney


Great Info Tscar!
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