The bricks of the chimney are deteriorated beyond repair. it is located on the outside of the house and is a 2 story structure. The fireplace has been converted to gas logs and the chimney is not used for anything else. What are the concerns when removing the chimney? We are aware that the roof will need to be repaired. What about the exterior of the house? Can we take the Chimney down ourselves? What else do I need to consider?