New Supreme Volcano insert! Preparing for installation...

[azthermal1]

Hi all! Been lurking and reading and searching on the forum. All great info.

First, the facts...

New Supreme Volcano insert
2 story colonial ~25 ft interior chimney

Yep, a liner question. I would prefer to have an insulated liner. My flue is approximately 7 1/4" x 11" ish. This was a measurement taken by me shimmying up past the damper handle and using outstretched arms and a measuring tape. Yes, a picture circulated on facebook of that one....

Insert requires a 6" liner. With my dimensions, insulated liner won't work.
I have read about ovalizing and knocking out the tiles....

What I would prefer to do is move down to a 5.5" insulated liner.

The question... In my situation, how would this downsizing effect performance?

Thanks!
Amanda

 

[begreen]

Probably would work ok.

 

[bholler]

5.5" would probably work and ovalizing probably will to but i feel break out in many cases is the right option. I would have to hear more about your situation though to make a good call. I dont like to break out liners in a fireplace unless they are already comprised or there is no other option.

 

[azthermal1]

Chimney is in good condition. This flue hasn't been used in the last 10 years. We had the whole thing cleaned and topped with a spark cage a few years ago.

What other type of info is needed?

Thanks
Amanda

 

[bholler]

What other type of info is needed?

In that case i would probably ovalize and insulate it. But 5.5" would probably work as well