Most masonry chimneys are constructed with an inner liner of clay tiles. The purpose of this liner is to keep the heat of flue gases inside the chimney so the chimney can’t overheat the nearby combustible material, such as the framing and walls of your house, and possibly cause a fire. The liner also keeps carbon monoxide, moisture, smoke, creosote, and other products of combustion from seeping through the bricks and mortar of your chimney and leaking into your home. As you can see, a secure lining system is crucial to the safety and well being of your home and family. To repair damage to the chimney, which may have been caused by a chimney fire, earthquake, settling, etc.
To upgrade old chimneys which were constructed without chimney liners, deteriorated or incomplete parge coating.
To replace cracked, worn, deteriorated liners, which may be allowing smoke, creosote or condensation to seep through the chimney walls. This may allow for heat transference to combustible materials. According to the National Fire Protection Agency (NFPA), clay flue tiles within a chimney should be replaced if they are cracked, broken, or missing. The most efficient and cost-effective repair is relining of the flue by a certified chimney contractor
To properly size the chimney for a new appliance; such as converting from wood to gas heat.
To prevent excessive creosote buildup (and risk of a chimney fire)
This brings us to a chimney re lining system. What is it? Simple, it’s what you need when the original clay tile liner was either –never installed, or when the tile lining cracks, crumbles and deteriorates over time. Water damage, chimney fires, or just age can cause the deterioration of your clay liner or parge coating on an unlined flue. When that happens the National Fire Prevention Association (NFPA) code 211 says it must be replaced.