Chimney words, explained
Plain English for the words you hear on a chimney visit.
C
Chimney Cap
A protective covering on top of the chimney to keep out rain, debris, and animals.
Chimney Crown
A slab of concrete or mortar that covers the top of the chimney structure.
Chimney Flashing
Material used to seal the space between the chimney and roof to prevent leaks.
Chimney Liner
A lining inside the chimney designed to contain combustion byproducts and direct them outside.
Creosote
A tar-like substance that forms when wood smoke condenses, often leading to chimney fires.
D
Damper
A movable plate that controls the draft and airflow in the chimney.
Down Draft
When air flows down the chimney, possibly introducing smoke into the home.
Drafting
The upward flow of smoke and gases through the chimney.
E
Efflorescence
White, powdery deposits that can appear on brickwork, indicating moisture issues.
F
Firebox
The part of the fireplace where the fire burns.
Flue
The duct or opening in a chimney where smoke and combustion gases exit the home.
M
Masonry
Construction using brick, stone, or concrete block.
R
Repointing
The process of renewing the external part of mortar joints in masonry construction.
S
Soot
Black powdery or flaky substance consisting largely of carbon, produced by incomplete combustion.
Spalling
The chipping or flaking of brick, often due to water damage.
W
Waterproofing
A treatment applied to chimney materials to prevent water penetration.
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