What is the most common type of masonry chimney liner?

The most common type of masonry chimney liner is clay tiles. Clay tile liners have been traditionally used in the construction of chimneys due to their resilience and ability to withstand high temperatures. They provide excellent thermal insulation, which is crucial for maintaining the safety and efficiency of the chimney system. Clay tiles are also resistant to corrosion and the harsh chemicals produced by burning fuels, making them a durable and long-lasting option.

Additionally, clay tiles are effective at protecting the chimney structure from the potential damage caused by the byproducts of combustion, such as creosote, which can accumulate over time. This accumulation poses a fire risk if not properly contained. The smooth surface of clay liners also aids in the efficient venting of gases and smoke, promoting better draft performance.

Other materials like metal sheets and cement blocks are used in specific applications but are not as prevalent for masonry chimney liners. Metal sheets can rust or corrode and may not provide the same thermal properties. Cement blocks can be heavy and may not have the necessary finish to handle the byproducts of combustion effectively. Plastic liners are generally not suitable for masonry chimneys because they can melt or deform under high temperatures, making them unsafe for this purpose. Thus, clay tiles are widely accepted as the standard for masonry chimney