Extend the Chimney Question...

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tpikaart

tpikaart

New Member
Oct 30, 2009
56
NorthWest NM
What is the best way to extend my masonry chimney about 3 feet?
I have the extra stainless liner and a liner connection, but what is the best way to
add to the chimney itself? Add a piece of clay tile on top of the brick
chimney? Use a metal extension? Appreciate any ideas--the more budget
conscious the better!

Thanks!
 
Probably the best way (if you have enough SS liner) is to add more brick or block and extend the chimney that way. Then cap the liner normally.

With my chimney being very close to the roof, and the crown in good shape, I was afraid to tear off the crown to build the masonry higher for fear of the bricks to want to come up w/ the crown.

As a result, I transitioned my flex liner into a 2 foot section of rigid liner of the same diameter (6 in) next, I surrounded the 6 in rigid liner w/ rock wool and carefully lowered a section of 7 in rigid liner down over it (essentially making homemade double wall pipe). I used 2 rain collars to seal off the bottom and top edges of the pipes and attached the rain collar to the inner 6 in pipe.

I try and get a picture later.

That's my solution for now. If I don't like how it works then I'll be forced to extend the masonry chiney later.

pen
 
Thanks Pen, what you describe is sort of similar to what I've already done--just to try it out and see if it added much to t he draft. It did, which is why I want to make it a bit more permanent. Like you, I don't want to add to the brick. I used a single wall piece of 8" w/o any insulation, I found an 8' to 6" reducer at HD, and then put my old cap back on. I just insulated (perlite) this Fall, but I didn't do the top section as I think my perlite would find its way out of my 8" extension. I'd like to see a pic of your collar/transition--I haven't found a way to get that as stable as I'd like.
 
Sorry, but it's dark out, a 1/2 day today (12 hours) and I just didn't have it in me to pull out the ladder to get a better pic.

If you need close-ups just let me know and I can get them to you in a day or two.

finishedchimney004.jpg


finishedchimney006.jpg


pen
 
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