Chimney words, explained
Plain English for the words you hear on a chimney visit.
B
Backdraft
A situation where smoke and gases flow back into the home, often due to a blocked flue or poor ventilation.
C
Chimney Cap
A protective cover installed at the top of the chimney to keep out rain, animals, and debris.
Chimney Crown
The concrete or stone top layer of a chimney designed to prevent weather damage.
Chimney Relining
The process of installing a new lining inside the chimney flue to enhance safety and efficiency.
Creosote
A flammable residue that builds up in chimneys from burning wood and can pose a fire hazard.
D
Damper
A movable plate in the chimney that controls airflow and can help prevent heat loss when the fireplace is not in use.
Draft
The upward flow of air in the chimney, which is essential for proper smoke and gas ventilation.
F
Firebox
The part of the fireplace where the fire is built and burns.
Flue
The duct or opening within the chimney that carries smoke and gases from the fireplace to the outside.
L
Liner
A material installed inside a chimney to protect the walls and ensure safe venting of gases.
M
Masonry
The bricks, stone, or concrete blocks used to construct the chimney structure.
R
Repointing
The process of renewing the external part of mortar joints in masonry walls.
S
Smoke Shelf
A ledge within the smoke chamber that helps to redirect downdrafts back up the chimney.
Soot
A black powdery or flaky substance produced by incomplete burning of organic matter, such as wood.
Spalling
The chipping or flaking of masonry, often caused by moisture and freeze-thaw cycles.
W
Waterproofing
Applying a water-repellant material to the exterior of the chimney to prevent water penetration.
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