A chimney liner is a lining installed inside a chimney. It is most commonly required when switching to modern heating appliances with controlled air supply, or when the existing chimney is partially damaged but still repairable.

By installing a liner inside an existing chimney, it is possible to create an entirely new flue channel where smoke travels through a stainless steel pipe. After installation, the old chimney structure remains as a protective outer shell and insulation. This extends the chimney’s lifespan without the need to demolish or rebuild the chimney when replacing heating equipment.

✅ A chimney liner should be installed for all heating appliances connected to a masonry chimney.

Does Your Chimney Need a Chimney Liner?

Here are some important points to know about chimney liners.

1. The Importance of a Chimney Liner

✔️ It increases safety for your wood stove or fireplace, as well as for your home and family.

✔️ A chimney liner creates a direct path for smoke, allowing it to exit the chimney safely and efficiently.

✔️ It reduces the risk of chimney fires because soot accumulates more easily on chimney walls without a liner.

✔️ If the chimney is cold, a liner helps prevent smoke from flowing back into the house during stove operation.

2. Chimney Liner Materials

🔹 Chimney liners are typically made of stainless steel because it is highly durable and resistant to heat and corrosion.

🔹 They are suitable for wood stoves, fireplaces, gas stoves and water heating appliances.

3. When Is a Chimney Liner Necessary?

✔️ If the chimney does not have a liner or the existing liner is damaged.

✔️ If you notice condensation forming inside the chimney.

✔️ To improve the performance of heating appliances and reduce the risk of chimney fires.