Clay flue liners are a traditional and robust method for lining chimney stacks, offering excellent resistance to heat, corrosion, and chemical attack from combustion byproducts. Commonly used in masonry chimneys for open fires, multi-fuel stoves, and solid fuel appliances, they remain a reliable and long-lasting choice in both domestic and heritage properties.
Manufactured from vitrified fireclay, these liners provide a smooth, durable internal surface that promotes good draft and reduces the build-up of soot and tar. Clay flue liners are available in various shapes and sizes—typically round, square, or oval—and are suitable for use with wood, coal, or gas appliances, provided the fuel type aligns with the liner’s performance rating.
Installation must follow UK Building Regulations and manufacturer guidance to ensure joints are correctly sealed and the liners are fully supported within the chimney structure. When installed properly, clay flue liners can last for decades, offering a cost-effective solution for both new build projects and the renovation of existing flues in older properties.
What Are Clay Flue Liners?
Clay flue liners are ceramic tubes used to line chimney flues, offering a heat-resistant, corrosion-resistant surface for safely venting combustion gases. They are commonly used in traditional masonry chimneys for open fires and solid fuel stoves.
Benefits and Applications
Clay liners promote a strong chimney draft and reduce the risk of soot deposits and corrosion. Suitable for wood, coal, or gas appliances, they are often specified in both new builds and heritage restoration projects due to their longevity and natural material composition.
Installation Considerations
Proper installation is essential to ensure a continuous, sealed flue path. Liners should be correctly jointed and bedded, with provision for expansion and maintenance access. Compliance with UK Building Regulations is required for safety and long-term performance.
