The Smoke Chamber of the fireplace is the area from the damper to the start of the flue tile which starts wider at the bottom and narrows as it reaches the top. It is reported that the majority of house fires caused by the use of a fireplace begin in the smoke chamber for two reasons.
- Typically this area is unlined and is constructed simple of brick and mortar. Over time and with use the wood behind this area tends to dry out from the heat of the brick and provides for the perfect elements for a fire hazard. Over time the mortar also deteriorates and can expose the area behind the fire chamber.
- Another cause of hazardous fires which may form in this area is due to the buildup of combustible materials within the camber walls. This area, when built, can be roughly constructed due to the nature of it being hidden. When roughly done it provides for gaps and areas which may stick out. These areas provide a prime area for creosote buildup which over time can catch fire and lead to hazardous conditions.