Thin layer of shiny creosote in 7-in clay flue

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Johnsmoke

New Member
Sep 25, 2024
2
Massachusetts
When I went to clean the chimney this fall I discovered a tissue paper thin shiny glaze of creosote lining the entire chimney. There was no loose stuff to knock off. Toward the end of the season the passive catalytic converter on my jotul 500 failed, causing abnormally Smoky fires before I caught the problem. My question is this a dangerous amount of creosote? The chimney sweep that came out to look at it said it needed to be chemically stripped and wants to charge me $4,000. Since it's so thin I wonder if it really is a hazard. Unfortunately I don't have experience with the situation. Thanks, John
 
When I went to clean the chimney this fall I discovered a tissue paper thin shiny glaze of creosote lining the entire chimney. There was no loose stuff to knock off. Toward the end of the season the passive catalytic converter on my jotul 500 failed, causing abnormally Smoky fires before I caught the problem. My question is this a dangerous amount of creosote? The chimney sweep that came out to look at it said it needed to be chemically stripped and wants to charge me $4,000. Since it's so thin I wonder if it really is a hazard. Unfortunately I don't have experience with the situation. Thanks, John
No clue without seeing atleast pics. But for $4g just have an insulated liner put in.
 
The chimney sweep took one photograph up through the chimney but has not shared it with me. It's bone dry tissue paper thin layer of creosote. I'm just wondering if it's safe to burn like this or not? There are no drips or large clumps it's just no longer a perfectly clean clay lining. It's just dark shiny glaze literally like black paint. I'm only concerned because this is my first time seeing it after three seasons of burning. I don't know if this is something I can treat myself or not?
 
The chimney sweep took one photograph up through the chimney but has not shared it with me. It's bone dry tissue paper thin layer of creosote. I'm just wondering if it's safe to burn like this or not? There are no drips or large clumps it's just no longer a perfectly clean clay lining. It's just dark shiny glaze literally like black paint. I'm only concerned because this is my first time seeing it after three seasons of burning. I don't know if this is something I can treat myself or not?
Again we have no idea without seeing full pictures. But yes glazed creosote can absolutely be a danger
 
4k to clean it with a chemical? I would find out what is used and do it myself. I am having a service upgrade to my house; multiple circuits added, generator transfer switch, a new sub panel and exterior outlets added to my house; a whole house surge protector installed all for not much more than that by a reputable licensed electrical company. Materials alone are thousands.

The chimney sweep is going to be in and out in how long? I looked up what it is and he has to basically sweep it, spray it with some stuff called tsr and come back later to sweep brush it again. He is trying to take you for a ride. I had my chimney tore down to roof line, a new liner installed and rebuilt for less than 4k. Call someone else and ask for a price. Unfortunately people try to pull this kind of thing all the time. A customer of mine was quoted $30k to replace the sewer line to the street by a big plumbing outfit. The job is worth about $4-5k. Just one example.
 
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4k to clean it with a chemical? I would find out what is used and do it myself. I am having a service upgrade to my house; multiple circuits added, generator transfer switch, a new sub panel and exterior outlets added to my house; a whole house surge protector installed all for not much more than that by a reputable licensed electrical company. Materials alone are thousands.

The chimney sweep is going to be in and out in how long? I looked up what it is and he has to basically sweep it, spray it with some stuff called tsr and come back later to sweep brush it again. He is trying to take you for a ride. I had my chimney tore down to roof line, a new liner installed and rebuilt for less than 4k. Call someone else and ask for a price. Unfortunately people try to pull this kind of thing all the time. A customer of mine was quoted $30k to replace the sewer line to the street by a big plumbing outfit. The job is worth about $4-5k. Just one example.
Cleaning with pcr requires $5k in equipment a few hundred in materials and 2 to 3 visits at a few hours each. I still think the price is a bit high and I would try mechanical cleaning with rotary chains first but it is an expensive process. But line i said at 4g I would take those liners out and put in insulated stainless
 
Since we are on the subject do those "creosote sweeping" logs work?
And are they detrimental to stoves, any pipes, terra cotta liners etc?
 
I do know they are detrimental to catalytic combustors.
 
Since we are on the subject do those "creosote sweeping" logs work?
And are they detrimental to stoves, any pipes, terra cotta liners etc?
They are fine in noncat stoves. And yes they definitely can loosen up glaze so it can be cleaned better. If needed I would suggest the powder though. Way cheaper and just as effective
 
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Cleaning with pcr requires $5k in equipment a few hundred in materials and 2 to 3 visits at a few hours each. I still think the price is a bit high and I would try mechanical cleaning with rotary chains first but it is an expensive process. But line i said at 4g I would take those liners out and put in insulated stainless
Yes definitely high. A 5k machine is more than a homeowner is going to spend to do it once every who knows how many years but not justification for the price. That is a small investment for a company which will use that machine to provide years of service with it. its not like they bought it for this one job. Yeah the insulated stainless is the way to go.