Chimney words, explained
Plain English for the words you hear on a chimney visit.
B
Backdraft
A reverse flow of air that can cause smoke to enter the home.
C
Chimney Cap
A cover installed on top of the chimney to keep rain, debris, and animals out.
Chimney Crown
The top element of a chimney, designed to protect the chimney structure from damage.
Chimney Liner
A lining in the chimney that protects the chimney walls and helps direct gases outside.
Creosote
A highly flammable substance that accumulates inside the chimney from burning wood.
D
Damper
A movable plate that regulates the flow of air through the chimney and can close it when not in use.
Draft
The flow of air moving through the chimney, necessary for effective smoke and gas expulsion.
E
Efflorescence
A white powdery residue on bricks, indicating moisture issues.
F
Firebox
The part of the fireplace where the fire burns.
Flue
The duct or opening inside the chimney that directs smoke and gases outside.
M
Masonry
Brick, stone, or concrete work used in chimneys and fireplaces.
Mortar
A paste used to hold bricks or stones together, especially important in chimney construction.
R
Repointing
The process of renewing the outer portions of mortar joints in masonry.
S
Smoke Chamber
The area where the fireplace narrows into the flue, helping to direct smoke upward.
Smoke Shelf
A flat area that deflects downdrafts from the chimney back up the flue.
Spark Arrestor
A device that prevents sparks and embers from escaping the chimney, reducing fire risk.
Got a chimney question?
Tell us the town and what you are seeing. We call back to set a time.