Wind coming down double wall chimney

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Danreg99

New Member
Sep 21, 2022
18
North Dakota
We have a zero clearance fireplace and we had to make some repairs inside our chimney chase. I noticed there is a ton of air coming down outside part of the double wall chimney where it connects to the fireplace. Is this normal?
 
We have a zero clearance fireplace and we had to make some repairs inside our chimney chase. I noticed there is a ton of air coming down outside part of the double wall chimney where it connects to the fireplace. Is this normal?
Yes it is
 
Insulate the chase well..
 
What about a cold air collar kit if your chimney pipe manufacturer offers one? Im starting to look into this myself for the same reasons.