How to ventillate a stovepipe?

[Josh]

Ok so here is the problem we are facing... running a stovepipe through the roof without melting bags around the pipe. We are considering firebrick, but how to place it? If we pulerize the firebrick, I think that because we are destroying the airholes in firebrick (which makes firebrick resistant to fire) that defeats the function of firebrick.

I don't have enough knowledge. I am doing research, but any feedback would be appreciated.

[mickey]

you need a thinble what are melting bags? whaqt kinds of roof>?

\800*-489-7663

mickey

[Josh]

We are using sandbags to build our dome. The bags will be the walls and the roof. So I am concerned about where the stovepipe exits the building. If I use a single walled pipe, it will probably get hot enough to melt the sandbags. So I have done some research and I will probably end up using a double walled aluminized steel metalbestos pipe.

Any experience using this type of pipe? Other ideas?