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

B
Backdraft
When smoke is pushed back into the home instead of exiting through the chimney.
C
Chimney Cap
A cover on the top of the chimney to keep rain, debris, and animals out.
Chimney Liner
Material that lines the flue to protect the chimney walls and improve efficiency.
Creosote
A flammable tar-like substance that builds up inside chimneys from burning wood.
Crown
The top surface of the chimney designed to shed water away from the flue and masonry.
D
Damper
A valve or plate that controls airflow inside the chimney.
Draft
The upward flow of air needed to pull smoke and gases out of the chimney.
F
Firebox
The chamber within the fireplace where the fire burns.
Flashing
Material used to seal the joint between the chimney and roof to prevent leaks.
Flue
The passage in the chimney that allows smoke and gases to exit the home.
I
Inspection
A professional assessment of the chimney's condition and safety.
M
Masonry
Brickwork or stonework in the construction of the chimney.
R
Repointing
The process of renewing the external part of mortar joints in masonry.
S
Smoke Chamber
The area above the fireplace that funnels smoke into the flue.
Soot
Black powdery substance that accumulates inside chimneys from combustion.
W
Waterproofing
Applying a sealant to prevent water penetration in the chimney structure.
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