Chimney words, explained
Plain English for the words you hear on a chimney visit.

C
Chase
The structure around a metal flue, resembling a traditional chimney.
Chimney Cap
A cover over the top of the chimney that keeps rain, debris, and animals out.
Chimney Crown
The top element of a chimney designed to shed water and protect the chimney structure.
Chimney Relining
Replacing or repairing the inner lining of the chimney to ensure safety and efficiency.
Creosote
A flammable tar-like substance that can build up in chimneys.
D
Damper
A device used to control the flow of air and smoke up the chimney.
Draft
The flow of air that carries smoke up the chimney.
E
Efflorescence
White, powdery residue caused by evaporating water on masonry.
F
Fire Stopping
Materials used to prevent the spread of fire and smoke within a chimney.
Firebox
The part of the fireplace where the fire actually burns.
Flashing
Material used to seal the gap between the chimney and roof to prevent leaks.
Flue
The interior passage of a chimney that allows smoke to exit the home.
L
Lintel
A horizontal support across the top of a fireplace opening.
M
Masonry
Construction made of brick or stone; common in chimney structures.
R
Repointing
The process of renewing the outer portion of mortar joints in masonry.
S
Smoke Chamber
The area above the firebox that helps direct smoke up the flue.
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