Chimney words, explained
Plain English for the words you hear on a chimney visit.
B
Backdraft
Occurs when airflow reverses direction, bringing smoke and gases back into the home.
C
Cap
A protective cover on top of the chimney to keep debris, rain, and animals out.
Chimney Liner
A protective layer lining the inside of the chimney to improve safety and efficiency.
Chimney Stack
The part of the chimney that extends above the roof.
Creosote
Creosote is a tar-like byproduct of burning wood that can accumulate inside chimneys.
Crown
A concrete layer at the top of the chimney, protecting it from weather damage.
D
Damper
A moveable plate that regulates airflow and prevents air loss when the fireplace is not in use.
Draft
The flow of air through the chimney, necessary for efficient smoke removal.
F
Firebox
The area inside the fireplace where the fire burns.
Flashings
Material used around the base of the chimney to seal and protect against water entry.
Flue
The flue is the vertical passage in the chimney that directs smoke outside.
M
Masonry
The bricks, mortar, and stones that form the structure of the chimney.
R
Repointing
The process of renewing the mortar joints between bricks in masonry construction.
S
Smoke Chamber
The area where smoke gathers before entering the flue.
T
Throat
The narrow area at the bottom opening of the chimney where the firebox and flue meet.
W
Waterproofing
Treatment applied to the exterior of the chimney to prevent water penetration and damage.
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