Creosote
A sticky, tar-like deposit that forms inside chimney flues when wood smoke cools and condenses. Creosote is highly flammable and is the leading cause of chimney fires in NZ. It builds up in three progressive stages, from light dusty soot to hard glazed tar.
Related Terms
Need a chimney sweep?
Tell us where you are and what you need. We'll match you with a verified local sweep and have them in touch within one business day.