Reduce the drafts and cold spots around a fire place, when it is not in use.
#1-Indentify what is causing the area around the fire place to have drafts and cold spots.
#2 Use proper materials and procedures to reduce or eliminate the problem.
The finished picture shows how we sealed a wide open chase way allowing cold air to drop into and around the fireplace box. This is a very commom problem. It requires professional to correct and make sure everything stays safe. The RESULT is far less cold drafts coming into the living room with a corner fire place.