chimney sweep said I have glazing

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kwikrp

Feeling the Heat
Oct 21, 2008
299
SE Mass
Had my chimney swept by a service. The chimney sweep told us that we had some glazing. He said he could not remove it ! I read on another thread that lead me to the chimney sweeps web page he states that if use us these creosote removers that you spray onto the wood before and during a fire, it will begin to chemically turn the glaze into flakes which then can be removed with a brushing. Anyone have any experience with this ?
 
I use both the liquid and powder and they do work. Usually when I come across glaze I just get out the chains and clean it. It takes some extra work (and costs extra) but it does a pretty good job.

Anyway, use the creosote remover for a week or two regularly and then sweep your chimney again. It should be cleaner then.
 
Any product work better ? I asked about the chains they said it may crack and damage the clay flue.
 
Both the powder and liquid work well. I tend to prefer the powder because its easy to apply.

If chains damage your flue, chances are your flue was already damaged or cracked.
 
You can get them at any stove shop and some hardware or Home improvement stores. You don't really have to look that hard.

IS the OP's chimney on an outside wall? It is really easy to get glazing if your stove is dumping into a cold chimney, especially if it is not properly sized. Curious as to what your set up is like...
 
I just checked my clay lined chimney and I see glazing going about 5' down from the top. It's like a 16th of an inch thick at most. The rest of the way is fluffy creasote, not heavy.

I burn with a Jotul Oslo with 3' of pipe going up to a 90 degree elbow going 3' out a thimble to a 8x8 clay lined chimney. The Chimney height is not even 10' high from where the thimble enters the flue.

I never had glazing before but in the past I have always installed a liner.
 
kwikrp said:
Any product work better ? I asked about the chains they said it may crack and damage the clay flue.
Go to the Hardware store and get some TSP. If you look on the packages of the power that is made for chimneys, you will see that is what's they are made of. If you get straight TSP it is ALOT cheaper.
 
N6CRV said:
kwikrp said:
Any product work better ? I asked about the chains they said it may crack and damage the clay flue.
Go to the Hardware store and get some TSP. If you look on the packages of the power that is made for chimneys, you will see that is what's they are made of. If you get straight TSP it is ALOT cheaper.

what is "TSP"?
 
http://www.chimneysweeponline.com/hoglaze.htm

I too have glaze, an extremely thin layer. had it for a month now, someone shared the above link for some info on it.

I have tried the spray and the logs you burn, nothing is touching it. Ill keep trying but I expect Ill have to get it chemically treated.
 
croghanite said:
N6CRV said:
kwikrp said:
Any product work better ? I asked about the chains they said it may crack and damage the clay flue.
Go to the Hardware store and get some TSP. If you look on the packages of the power that is made for chimneys, you will see that is what's they are made of. If you get straight TSP it is ALOT cheaper.

what is "TSP"?
Hello, it is short for Trisodium Phosphate. It is a degreaser and cleaner. It is used the most to clean walls of dirt and grease before you paint then. It is also the main ingredient in the creosote removers. You just add about 2 or 3 table spoons full on the wood then light the fire. It will dry out the creosote and make it flake off. You should use it every 3 or 4 days for the first month then go to once a week. What would cost $7.00 plus for chimney cleaner goes for around $2.00 a pound as TSP.
 
Trisodium phosphate. Or something like that. But you'll get it just as fast if you ask for it as TSP.

BTW some states are trying to cut down on its use, it is a phosphate. Our local hardware store told me it had been outlawed and tried to sell me a "TSP replacement" which on examination proved to be something entirely different. So I went to the good hardware store in the next town and they had plenty. So if you need TSP, be sure TSP is what you get.


croghanite said:
what is "TSP"?
 
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