New thimble into terra cotta liner

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IowaHuntr

New Member
May 22, 2022
22
Iowa
Hello all, new to the forum. Getting ready to install different wood stove and upgrade wall pass through to exterior chimney. Chimney has 12” x 8” terra cotta liner. Currently has 8” crock passing through wall but does not have sufficient clearance and I can see charred wood inside the wall from previous use. (From previous owner(s). Looking for an insulated thimble to pass through wall that will fit into the 8” hole in the chimney liner and accept 8” stove pipe from stove. I have attached pics of what I am working with as well as an e ample of what I think I need for a thimble? Any thimble suggestions appreciated. We are tearing the interior wall out so will be able to frame in whatever we need and access hole in liner fairly well. Thanks in advance!

B8F1C5BB-3F28-4A06-A9A8-232ED89440F9.jpeg 6E1A2A10-05AB-4F07-B0DB-8EAE2FB03BB3.jpeg 47E0A9BB-9B3A-441A-AB21-940D7AB1DFD0.jpeg 4D14E320-1A09-429F-BEBC-F8425718A3B3.png
 

EatenByLimestone

Minister of Fire
Insulated thimble inside the stick built structure, stainless steel flue goes through the insulated thimble, terra cotta thimble and into the 8x12chimney liner.
 

IowaHuntr

New Member
May 22, 2022
22
Iowa
Thanks EBL. Are you recommending that I keep the terra cotta crock thimble and downsize my pipe to go through it? I planned to get rid of it all together. Thank you
 

bholler

Chimney sweep
Staff member
Jan 14, 2014
28,726
central pa
Thanks EBL. Are you recommending that I keep the terra cotta crock thimble and downsize my pipe to go through it? I planned to get rid of it all together. Thank you
The terracotta crock gets removed as well as any combustible materials inside the area specified by the manufacturer of the thimble. That thimble then gets attached to the masonry chimney structure and a stainless pipe is run through it to the inside face of the clay liner. It gets sealed with refractory cement and you stove pipe gets attached to the other end.

And the ventis thimble you have a picture of there is the easiest one I have found to work with
 
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IowaHuntr

New Member
May 22, 2022
22
Iowa
The terracotta crock gets removed as well as any combustible materials inside the area specified by the manufacturer of the thimble. That thimble then gets attached to the masonry chimney structure and a stainless pipe is run through it to the inside face of the clay liner. It gets sealed with refractory cement and you stove pipe gets attached to the other end.

And the ventis thimble you have a picture of there is the easiest one I have found
The terracotta crock gets removed as well as any combustible materials inside the area specified by the manufacturer of the thimble. That thimble then gets attached to the masonry chimney structure and a stainless pipe is run through it to the inside face of the clay liner. It gets sealed with refractory cement and you stove pipe gets attached to the other end.

And the ventis thimble you have a picture of there is the easiest one I have found to work with
Thanks bholler. I think I’ll go ahead and get one ordered. I appreciate it
 

IowaHuntr

New Member
May 22, 2022
22
Iowa
Thanks bholler. I think I’ll go ahead and get one ordered. I appreciate it
The terracotta crock gets removed as well as any combustible materials inside the area specified by the manufacturer of the thimble. That thimble then gets attached to the masonry chimney structure and a stainless pipe is run through it to the inside face of the clay liner. It gets sealed with refractory cement and you stove pipe gets attached to the other end.

And the ventis thimble you have a picture of there is the easiest one I have found to work with
Is this the same thing? Copperfield brand I found about $50 less. BF857549-3B79-4A56-B610-66425AEA1174.jpeg