By Richard from Chesterton, IN on December 2, 2013
I am looking for an insert to place inside my fireplace to prevent air from entering the room when the unit is not being used. Air comes down the chimney flue, and when the flue is closed some air is still entering the room. Any ideas?
By Collin C. - NFI Master Hearth Professional on December 3, 2013
Answer:Air intrusion is a common issue with traditional cast iron dampers. A top mounted damper is the best way to completely seal the chimney when it is not in use. These dampers feature a heavy silicone seal that will not allow any air to pass through. Is your fireplace a manufactured unit or a masonry fireplace? If you would like to provide the dimensions of the flue, I can suggest a damper to fit your needs.