Clay Flue Liner Basics

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A flue liner is found along the pathway of the exhaust fumes in a chimney. It is essentially a functional layering, found along the chimney’s flue. Flue liners are not needed in all chimneys. Many modern chimneys are pre-coated with protective layers. However, flu liners are recommended in older household chimneys wherein cleaning and general maintenance of the chimney is often neglected. Clay tiles are amongst the most common flue liner materials. Often referred to as clay flue liners, the tiled layer can be easily installed without any professional help.

Understanding Clay Flue Liner Advantages

Clay tiles aren’t the most durable material but they are recommended for improving the chimney’s safety. The internal walls of older chimneys tend to become porous over a period of sustained usage. Thus, they present an easily-attachable surface for smoke and chimney soot. If such materials stick to the flue, they can cause chimney fires. Clay flue liners ensure that debris and gases produced from burning the chimney fuel don’t stick to the internal lining of the chimney. Clay flue liners have another fire-fighting feature. They have low thermal resistance. This means that even if a chimney fire occurs, the clay tiles cannot withstand the heat and break easily. Due to this, the fire is readily extinguished.

Understanding Clay Flue Liner Problems

Clay liners may present some maintenance issues, particularly in homes with moisture-seepage. Clay tiles are installed using a mortar-mix and this lining is vulnerable to dampness. Secondly, the clay tiles need to be replaced on a periodic basis since they easily develop cracks.