According to the National Fire Protection Association, the interior of the smoke chamber between the firebox and flue must be covered with a special insulating refractory mortar known as a parge coat. The NFPA requires this coating because it makes the smoke chamber structurally safer and more durable: – The parge coat prevents chimney brick…

If you’ve started to notice that smoke is beginning to enter your room instead of exiting through the chimney as normal, it could just be that you need to avail of the services of a chimney cleaning company to maintain your chimney flue. Most airflow issues are caused by obstructions such as soot, although birds…

Chimney brick deterioration is referred to professionally as “spalling.” The term comes from “spall,” which refers to rock breaking into smaller fragments. Why does chimney spalling occur? Old bricks and mortar wear down with exposure to wind, rain and other weather. The chimney suffers cyclical water-related damage when cool/cold weather expands water in porous surfaces…