Chimney words, explained
Plain English for the words you hear on a chimney visit.
C
Chase Cover
A cover at the top of a prefabricated chimney to prevent water and debris entry.
Chimney Cap
A protective covering on top of the chimney to keep rain, debris, and animals out.
Chimney Liner
A layer inside the chimney that protects the chimney walls and ensures safety.
Creosote
A tar-like substance from wood burning that can build up in chimneys.
Crown
The top surface of the chimney around the flue that helps shed water away from the chimney.
D
Damper
A moveable plate that controls airflow through the chimney.
Draft
The flow of air up the chimney that removes smoke and gases from the building.
E
Efflorescence
White staining caused by water bringing salts to the surface of masonry.
F
Firebox
The part of the fireplace where the fire actually burns.
Flue
A duct for smoke and gases to exit the fireplace.
M
Masonry
Brick, stone, or concrete materials used to construct chimneys.
R
Repointing
Replacing old mortar in the joints of masonry to maintain structure.
S
Smoke Chamber
Area above the firebox where smoke mixes before entering the flue.
Soot
A black powdery substance produced by incomplete burning of organic matter.
Spark Arrestor
A device on the cap that prevents sparks from leaving the chimney.
W
Waterproofing
Applying a sealant to masonry to prevent water penetration.
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