Chimney words, explained
Plain English for the words you hear on a chimney visit.
B
Backdrafting
The reverse flow of air that can cause smoke to enter the home instead of exiting through the chimney.
C
Chase Cover
A metal covering that protects the top of a prefabricated chimney.
Chimney Cap
A protective covering that sits on top of the chimney to keep out rain, debris, and animals.
Chimney Crown
The top layer of the chimney that helps to protect the bricks and mortar from weather damage.
Chimney Liner
A lining inside the chimney that protects its walls and improves the flow of smoke.
Chimney Waterproofing
Applying a water-repellent coating to the chimney exterior to prevent moisture from penetrating the masonry.
Creosote
A flammable substance that forms when wood smoke condenses in the chimney. It can build up over time and increase the risk of chimney fires.
D
Damper
A metal plate that opens or closes the flue, controlling the flow of air and smoke.
Draft
The flow of air or gases through the chimney, crucial for proper ventilation.
F
Firebox
The portion of the fireplace where the fire is built. It is usually made of firebrick.
Flue
The vertical passageway inside the chimney that allows smoke and gases to exit the home.
L
Lintel
A horizontal structural element above the fireplace opening, supporting the masonry above.
M
Masonry
The stonework or brickwork that forms the structure of the chimney.
S
Smoke Chamber
The area above the firebox where smoke mixes before entering the flue.
Spark Arrestor
A device on top of the chimney cap that prevents sparks from escaping and igniting nearby combustible materials.
T
Tuckpointing
The process of repairing or finishing mortar joints between bricks or stones in a chimney.
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