EXTENDING MY CHIMNEY

[mountain man 2]

Hello all.....The installation I have was done by a certified chimney n stove installer. When we first did the install I was concerned the chimney wasn't high enough (apparently the installer did).
Its only about 12-13 ft. with 1 slight bend at bottom.
I want to extend it 2 ft....need suggestion what I can do with what I have..it measures very close to 7" where the cap fastens......here's some pics.


Thanks!

 

[double-d]

Forever Flex does make a Flue Extender that is 18" in length, but they say "it is not recommended for use with solid fuels". Because it is not Insulated, the gasses will cool down and create creosote.
To do it correct you would need to remove the top plate and rain cap, also any clay tile sticking up, install a transition plate then use a
6" Class A double wall insulated pipe, and cap. The existing Flex Liner will connect to the bottom of the transition plate, and the class A pipe will connect to the top of the transition plate, if you use the Ventis pipe from Olympia.

 

[mountain man 2]

Forever Flex does make a Flue Extender that is 18" in length, but they say "it is not recommended for use with solid fuels". Because it is not Insulated, the gasses will cool down and create creosote.
To do it correct you would need to remove the top plate and rain cap, also any clay tile sticking up, install a transition plate then use a
6" Class A double wall insulated pipe, and cap. The existing Flex Liner will connect to the bottom of the transition plate, and the class A pipe will connect to the top of the transition plate, if you use the Ventis pipe from Olympia.

Thanks for what my options are....ill give it some thought......

 

[ColdNorCal]

Recently researched this. Can use either a Class A Finishing Collar and insert it into the flex liner. Or use a Class A anchor plate and remove your existing plate. Then use a Class A pipe and brace as needed.

https://www.efireplacestore.com/sha-6a-fc.html?refnum=Apr-768-9507

https://www.efireplacestore.com/sha-6a-ap.html?refnum=Apr-768-9507

https://www.efireplacestore.com/sha-6a-36.html?refnum=Apr-768-9507