Chimney words, explained
Plain English for the words you hear on a chimney visit.
C
Chimney breast
The visible part of the chimney that protrudes into the room.
Chimney cap
A cover on top of the chimney that keeps debris and animals out.
Chimney crown
The top surface of the chimney that protects against weather damage.
Chimney liner
A lining inside the chimney that protects the walls and improves function.
Creosote
A flammable substance that builds up inside chimneys from burning wood.
D
Damper
A metal plate that opens or closes the flue to control air flow.
Draft
The flow of air that carries smoke up and out of the chimney.
F
Firebox
The part of a fireplace where the fire actually burns.
Flue
The duct or pipe in the chimney that expels smoke and gases.
M
Masonry
Brickwork or stonework that makes up the chimney structure.
R
Repointing
Repairing the joints in brickwork by applying fresh mortar.
S
Smoke chamber
An area above the fireplace that leads smoke into the flue.
Spalling
When bricks or stone flake off due to moisture and temperature changes.
Spark arrestor
A screen on the chimney cap that prevents sparks from escaping.
T
Thimble
The opening in the chimney wall that connects to a stove or pipe.
W
Waterproofing
A treatment applied to keep moisture from penetrating the chimney.
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