How to Protect Your Flue from Creosote Buildup

Introduction

Creosote is one of the biggest concerns for wood-burning stove owners. This black, tar-like substance forms when smoke condenses inside a cool flue, and if left untreated, it can cause chimney fires. Fortunately, with the right burning techniques and flue system, creosote buildup can be minimised.

Tarred Flue Pipe

What Causes Creosote?

• Burning unseasoned or damp wood

• Low burning temperatures

• Poor draft or oversized flues

• Inadequate insulation in the flue system

Dangers of Creosote

1. Fire Hazard – Creosote is highly flammable and a leading cause of chimney fires.

2. Blockages – Restricts airflow, reducing stove efficiency.

3. Corrosion – Traps moisture inside flues, leading to rust.

   
   

   

   Tar on stove

   
   

Prevention Tips

1. Burn Only Seasoned Wood – Logs should be dried to below 20% moisture content.

2. Maintain Proper Draft – Ensure your flue is the correct height and diameter.

3. Use a Twin Wall Flue – Insulated systems keep gases hot, reducing condensation.

4. Regular Sweeping – Have your chimney cleaned at least once a year.

5. Run Hot Burns – Avoid slow, smouldering fires that encourage condensation.

   
   

Conclusion

Creosote is a serious risk, but it’s one that can be controlled with good burning habits and the right flue system. At Rhino Flues, we offer durable flue liners, pipes, and accessories designed to keep your stove running safely and efficiently.