Why would I need to have my original chimney liner replaced?
The National Fire Protection Association (NFPA) Standard 211 requires that chimney liners be replaced if they are cracked, broken, or missing. Cracked clay liner tiles and the deterioration of mortar joints between liner tiles can lead to the leakage of flue gasses into the interior of the house. Those flue gasses contain carbon monoxide, a deadly, odorless, colorless gas. Cracks in your chimney liner can also cause dangerous heat transfer to combustible material surrounding your chimney. Both situations can compromise the health and safety of your family.