Residue or thick layer of soot after a poor combustion in a fireplace, layered on the inner part of a chimney pipe or smokestack. Dangerous situation for fire, fire hazard. Poster #563112428
Residue or thick layer of soot after a poor combustion in a fireplace, layered on the inner part of a chimney pipe or smokestack. Dangerous situation for fire, fire hazard. Poster #563112428
