Is this masonry pass through safe?

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9

94SS

New Member
Dec 29, 2021
41
Lincoln, Nebraska
It’s about a 9 inch by 9 inch hole. 8 inch chimney and pipe is 8 inch into 7. Stove piping is about .040 inch thick. Tension of the wall ring is and height of the stove pipe holds the 8 to 7 inch reducer in place. Has a 1 to 2 inches of some type concrete but not a crock. This concrete rings appears to sit in some of material that looks to be a pale white material not sure if it’s wood but kind of looks like it’s not. House built in 1980. Thanks.

Is this masonry pass through safe? Is this masonry pass through safe? Is this masonry pass through safe? Is this masonry pass through safe?
 
What type of wall is behind that brick?
 
Hope that's not a bit of wood exposed underneath the thimble in the last picture.
 
Split level house with thin brick siding. Areas above the garage and back of house has regular wood siding. And behind the wood siding is just studs with insulation rolled in. No osb wall. Looking through ash clean out cinder block wall to chimney. Not sure if that is correct info needed. It looks like some intentionally cut a circle through a wood like material and put mortar in it.
 
There is a good chance this is not done properly. If there is wood under the thimble, it definitely is unsafe. There needs to be at least 12" separating the thimble from any combustibles like studs, drywall, siding, etc. from a clay thimble.
 
That is 12" of solid masonry. Wall passthroughs are rarely done properly for masonry chimneys through combustible walls. And it is the most common area where chimneys cause structure fires
 
94SS said:
What’s your favorite tools for cutting and grinding masonry in a wall like that? Thanks.
Click to expand...
I use an arbor tech for cutting inside houses. And one of several sizes of impact hammers for chipping
 
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Call the folks at WoodlandDirect.com - 844.497.6601 . They sell Champion chimney parts which is a rebrand of Ventis. Rockford also sells a masonry thimble (maybe also Ventis?)
www.rockfordchimneysupply.com

Insulated Chimney Thimble for Thimble and Wall Pass Thru Installations - Rockford Chimney

An Insulated Chimney Thimble protects the wall from overheating where the flue pipe passes through. Includes installation instructions. Free shipping.
www.rockfordchimneysupply.com www.rockfordchimneysupply.com
This article should be helpful. It has a couple of alternative thimble suggestions:

Chimney info - CHIMNEY - PASSING A CHIMNEY THROUGH THE WALL

DON’T Just “Do it” - Placing a wood stove into an existing masonry chimney could be hazardous to your health and house. Read this to learn more. One of our biggest problems occurs when a customer enters the shop and states “I have an existing woodstove into a masonry chimney - I’d like to...
www.hearth.com www.hearth.com
 
begreen said:
Call the folks at WoodlandDirect.com - 844.497.6601 . They sell Champion chimney parts which is a rebrand of Ventis. Rockford also sells a masonry thimble (maybe also Ventis?)
www.rockfordchimneysupply.com

Insulated Chimney Thimble for Thimble and Wall Pass Thru Installations - Rockford Chimney

An Insulated Chimney Thimble protects the wall from overheating where the flue pipe passes through. Includes installation instructions. Free shipping.
www.rockfordchimneysupply.com www.rockfordchimneysupply.com
This article should be helpful. It has a couple of alternative thimble suggestions:

Chimney info - CHIMNEY - PASSING A CHIMNEY THROUGH THE WALL

DON’T Just “Do it” - Placing a wood stove into an existing masonry chimney could be hazardous to your health and house. Read this to learn more. One of our biggest problems occurs when a customer enters the shop and states “I have an existing woodstove into a masonry chimney - I’d like to...
www.hearth.com www.hearth.com
Click to expand...
I saw the article and my first though was do I really have to cut the brick out to 15 3/4 by 15 3/4 inch. No point in having masonry if you have to fix anything. Then you better get tools to not put brick dust in the air.
 
On these insulated thimbles is rigid for putting your standard pipe through the thimble and tee snout end only for passing liners through the thimble? Almost as bad as trying to figure out stihl bar and chains without the bar and chain catalog.
 
94SS said:
On these insulated thimbles is rigid for putting your standard pipe through the thimble and tee snout end only for passing liners through the thimble? Almost as bad as trying to figure out stihl bar and chains without the bar and chain catalog.
Click to expand...
They make one that comes with a tee snout for a stainless liner and one with straight pipe for a masonry liner
 
94SS said:
I saw the article and my first though was do I really have to cut the brick out to 15 3/4 by 15 3/4 inch. No point in having masonry if you have to fix anything. Then you better get tools to not put brick dust in the air.
Click to expand...
You have to cut the masonry big enough to allow the base of the thimble through. I usually cut it round not square. The trim plate then covers your cut
 
94SS said:
I saw the article and my first though was do I really have to cut the brick out to 15 3/4 by 15 3/4 inch. No point in having masonry if you have to fix anything. Then you better get tools to not put brick dust in the air.
Click to expand...
Scroll down. The article continues on to describe other options including insulated thimbles from Dalsin and Heat-Fab.
 
bholler said:
You have to cut the masonry big enough to allow the base of the thimble through. I usually cut it round not square. The trim plate then covers your cut
Click to expand...
Know of any businesses that sell the arbor tech online or best to just buy from the manufacturer? Looks like they are out of Massachusetts.
 
94SS said:
Know of any businesses that sell the arbor tech online or best to just buy from the manufacturer? Looks like they are out of Massachusetts.
Click to expand...
It's an Australian company. And the all saw I use is roughly $1000. You can do a decent job controlling the dust with a grinder that has a dust shroud.
 
Olympia started in Scranton pa. They recently combined with Copperfield. Olympia claims they bought Copperfield but I don't know.

And they sell under different names through some online sellers. I honestly don't know what they do in the Canadian market
 
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