Breaking furnace cement bond to clean flue??

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.
Status
Not open for further replies.

stek

New Member
Sep 17, 2010
51
Western WA
We've been burning our new Jotul Black Bear for the last month and want to do a preliminary sweep to see what we get. We have a short sloped length in our flue that we need to take apart to clean. However everything is put together with furnace cement and the bond seems to be impossible to break. Any tips on how to break that bond?
 
I also use the stove cement to seal the connection between the stove pipe and the flue. I take it apart when I clean by simply wiggling the pipe back and forth a bit. This is enough the break the cement seal. some of the concrete will stay on the pipe, some will stay on the stove and some will fall into the stove.

Just scrape the surfaces clean, clean up the small mess and use new stove cement when you put the pipe back in place.

This should work for you as well -- unless you have a different type of cement product. Mine is made by "Imperial" - and is called "Hi-Temp Stove and Furnace Cement."
 
nelraq said:
I also use the stove cement to seal the connection between the stove pipe and the flue. I take it apart when I clean by simply wiggling the pipe back and forth a bit. This is enough the break the cement seal. some of the concrete will stay on the pipe, some will stay on the stove and some will fall into the stove.

Just scrape the surfaces clean, clean up the small mess and use new stove cement when you put the pipe back in place.

This should work for you as well -- unless you have a different type of cement product. Mine is made by "Imperial" - and is called "Hi-Temp Stove and Furnace Cement."

+1
 
I wiggled and wiggled, even tapped with a hammer and block and couldn't get it to budge... maybe just need to be a bit more agressive with it. Not sure of the brand but the product was the same, hi-temp stove and furnace cement.

Do most people that have bends things apart when cleaning or do you use a flexible pushrod?
 
stek, are those also held together with 3 screws? They should be.
 
Yep, three screws in each joint. I'm thinking about getting a flexible rod and round brush to make things easier instead of taking it apart, tried again yesterday and that sucker is bonded like .. well, cement! If we ever do get it apart will probably not use cement to put it back together again!
 
Stek, what we've always used is Rutland Chimney Sweep Furnace Cement. It is very easy to work with and clean up is just with a wet rag. You put it on and after you put the pipes together some will show on the pipe. That is what you use the wet rag for. Also, when taking the pipe apart, it is easy as the stuff will break easily. Also it is marked that it is rated to 2700 degrees. I just looked on the jar and it cost $2.79 at the hardware store.

Someone definitely had to use something different on that pipe.
 
Backwoods Savage said:
Stek, what we've always used is Rutland Chimney Sweep Furnace Cement. It is very easy to work with and clean up is just with a wet rag. You put it on and after you put the pipes together some will show on the pipe. That is what you use the wet rag for. Also, when taking the pipe apart, it is easy as the stuff will break easily. Also it is marked that it is rated to 2700 degrees. I just looked on the jar and it cost $2.79 at the hardware store.

Someone definitely had to use something different on that pipe.

I am using the same stuff, Stek. Easy to use and clean. I cannot imagine what they used to put your pipes together.
 
Status
Not open for further replies.