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View up the inside of a masonry chimney flue with clay tiles coated in glossy black creosote tar, lit by a fierce orange fire glow and rising sparks from below — the start of a chimney fire.

🏠 Fire in Daily Life June 12, 2026 · 7 min read

Chimney Fire Science: Why Creosote Turns Flues Into Fuel

A chimney fire can hit 1090 °C and crack a clay flue liner in minutes. Here is the creosote science behind it, and why an annual sweep stops it.