Chimney Size Too Small For 6" Insulated Flex Liner Help Me!

[blackattack3]

I am running into a size dilemma. I have a US Stove Magnolia 2500 wood stove that requires a 6" stove pipe.
The log cabin we purchased ( built in 1994) has a field stone chimney that is lined with 8"x8" terracotta Clay. The inside diameter of the chimney is 6-3/4". The flex chimney liner is 6-1/2" outside diameter. If I use the insulation blanket that adds another 3/4" total. That pushes the size to 7" too large to fit. My questions are do I just use the liner with out insulation and take the chance of a poor draft, down size the liner size to 5.5" or just use the chimney without a liner?. I have not had the chimney inspected yet but it looks very clean inside. Previous owners had a antique Quality gas stove converted to propane hooked up.
Please any suggestion's would be greatly appreciated. Thank you, Mike

 

[bholler]

I am running into a size dilemma. I have a US Stove Magnolia 2500 wood stove that requires a 6" stove pipe.
The log cabin we purchased ( built in 1994) has a field stone chimney that is lined with 8"x8" terracotta Clay. The inside diameter of the chimney is 6-3/4". The flex chimney liner is 6-1/2" outside diameter. If I use the insulation blanket that adds another 3/4" total. That pushes the size to 7" too large to fit. My questions are do I just use the liner with out insulation and take the chance of a poor draft, down size the liner size to 5.5" or just use the chimney without a liner?. I have not had the chimney inspected yet but it looks very clean inside. Previous owners had a antique Quality gas stove converted to propane hooked up.
Please any suggestion's would be greatly appreciated. Thank you, Mike

Remove the clay liners you will have plenty of room. Also you need to check the wall passthrough. Unless that is a full masonry wall chances are combustibles are to close.

 

[blackattack3]

Removing the clay liners would destroy the chimney I would think. The wall is solid masonry. Thanks

 

[bholler]

Removing the clay liners would destroy the chimney I would think. The wall is solid masonry. Thanks

No it doesnt we remove them all the time. Is this in the basement? Or does that stone go all the way through the logs to outside?

 

[kennyp2339]

Removing the clay liners would destroy the chimney I would think. The wall is solid masonry. Thanks

@bholler is a certified professional installer, perhaps more pics of the chimney is needed (including the clean out) inside pics from the bottom up with a cell phone and powerful flash light.

 

[Rickb]

I would call the manufacturer and ask if they say a 5.5" liner will work with there stove and your chimney height. Some will approve it or not. I doubt you will get any response from us stove but you can try.

 

[bholler]

@bholler is a certified professional installer, perhaps more pics of the chimney is needed (including the clean out) inside pics from the bottom up with a cell phone and powerful flash light.

Actually i let my certification lapse. It costs allot and in our market it really isnt needed. I just wanted to be sure not to be misrepresented.

 

[blackattack3]

No it doesnt we remove them all the time. Is this in the basement? Or does that stone go all the way through the logs to outside?

This is all on main story and goes through the wall without a cleanout

 

[blackattack3]

I would call the manufacturer and ask if they say a 5.5" liner will work with there stove and your chimney height. Some will approve it or not. I doubt you will get any response from us stove but you can try.

Actually I talked to US Stove just before posting and they said NO. 6" pipe only!

 

[bholler]

This is all on main story and goes through the wall without a cleanout

Yes but does the stone go through the wall or is it log on the outside in that area?

 

[blackattack3]

Yes but does the stone go through the wall or is it log on the outside in that area?

It goes through the wall. A wood frame surrounds the stone. The chimney base looks like cinder blocks with field stone mortared to it.
Thanks all!

 

[blackattack3]

It goes through the wall. A wood frame surrounds the stone. The chimney base looks like cinder blocks with field stone mortared to it.
Thanks all!

What if I went with a square chimney liner? One is available.

 

[bholler]

It goes through the wall. A wood frame surrounds the stone. The chimney base looks like cinder blocks with field stone mortared to it.
Thanks all!

Ok then the pass through should be good

 

[bholler]

What if I went with a square chimney liner? One is available.

Just have the clay removed. It is the right way to do it.

 

[blackattack3]

Just have the clay removed. It is the right way to do it.

What is a rough price at 20' chimney clay removal? I just priced a square 6"x6" liner complete at $1,139.77 free shipping.
Thanks for every one's input

 

[bholler]

What is a rough price at 20' chimney clay removal? I just priced a square 6"x6" liner complete at $1,139.77 free shipping.
Thanks for every one's input

How do you plan on fitting a 6x6 liner in the chimney if you cant fit a 6" round in?

The few times we have removed clay without doing the liner we charged in the neighborhood of $300.

 

[blackattack3]

How do you plan on fitting a 6x6 liner in the chimney if you cant fit a 6" round in?

The few times we have removed clay without doing the liner we charged in the neighborhood of $300.

That price does not sound too bad but without a cleanout I don't know how they would get the broken clay up and out of the chimney.
For the sizing the square liner has an outside diam of 6", and no option of insulation.

 

[blackattack3]

Has anyone ever used the insulation you pour down along side the liner?

 

[bholler]

That price does not sound too bad but without a cleanout I don't know how they would get the broken clay up and out of the chimney.
For the sizing the square liner has an outside diam of 6", and no option of insulation.

I would shovel it out the crock. You wouldnt take it up and out. Do you have the required 1" of clearance between the outside of the chimney and combustible materials? If not you need insulation.

 

[bholler]

Has anyone ever used the insulation you pour down along side the liner?

You need 1" of that insulation on all sides.

 

[blackattack3]

A 6" liner without insulation will fit in my 8"x8" flue. Tight but will fit. I just did not know that if I could not use insulation wrap would that cause a poor draft performance.

 

[bholler]

A 6" liner without insulation will fit in my 8"x8" flue. Tight but will fit. I just did not know that if I could not use insulation wrap would that cause a poor draft performance.

It may cause poor draft. The biggest issue is the safety factor. Do you have that 1" of clearance between the outside of the masonry of the chimney and combustible materials?

 

[bholler]

And honestly if your clay is 6.75 inside the chances of getting even a bare liner down it are very slim. Even the slightest offset in the liner will keep the liner from going down.

 

[blackattack3]

And honestly if your clay is 6.75 inside the chances of getting even a bare liner down it are very slim. Even the slightest offset in the liner will keep the liner from going down.

I will get more picture tomorrow and recheck my measurements.
Everyone have a great evening!! Mike

 

[bholler]

I will get more picture tomorrow and recheck my measurements.
Everyone have a great evening!! Mike

Ok