Chimney words, explained
Plain English for the words you hear on a chimney visit.
C
Chimney Cap
A cover or shelter at the top of the chimney that prevents water, debris, and animals from entering.
Chimney Crown
The top element of a masonry chimney that seals the chimney from the outside, protecting it from weather.
Chimney Inspection
A professional examination of a chimney to check for safety issues, blockages, or structural problems.
Chimney Liner
A lining inside a chimney that protects the walls from heat and corrosion while guiding smoke out.
Chimney Sweep
A professional service that cleans chimneys to remove soot, blockages, and built-up creosote.
Creosote
A black or brown residue that can form inside a chimney when wood is burned incompletely. It is flammable and should be cleaned out regularly.
D
Damper
A movable plate located in the flue that controls airflow and smoke escape.
Draft
The flow of air through the chimney, which allows smoke and gases to rise and exit the home.
F
Firebox
The chamber within a fireplace where the fire actually burns.
Flashing
The metal or waterproof material used to seal the gap between the chimney and the roof to prevent leaks.
Flue
The vertical channel inside a chimney through which smoke and gases are expelled from the fireplace or furnace.
M
Masonry
The construction and materials used in building a chimney, typically involving brick or stone.
R
Repointing
The process of renewing the external part of mortar joints in masonry construction.
S
Smoke Chamber
The area above the firebox where smoke and gases mix before rising up into the flue.
Soot
A fine black powder, consisting mainly of carbon, that is produced by burning organic matter incompletely.
W
Waterproofing
The application of a sealant to the exterior surfaces of the chimney to prevent water penetration and damage.
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