I am looking to construct a 4 sided fireplace in the center of 3 adjoining room; living, family and dining. Looking to use flagstone and brick. How can I assure proper draft and construction?
I'm not sure what your situation is. You said 4 sided in 3 rooms. Will you be able to see into the other rooms through the fireplace? Where does the fourth side face? Is this a common chimney with four fireboxes?