Chimney anatomy
Every part of a chimney, what it does and what goes wrong with it.
PART 01
Chimney cap
A chimney cap is a protective covering at the top of the chimney that prevents debris, rain, and animals from entering the chimney.
- Cap can become loose or damaged from weather
- Debris can build up around the cap
- Rust can form, leading to deterioration
PART 02
Crown
The chimney crown is a slab, usually made of cement, that covers the top of the chimney to protect it from the elements.
- Cracking due to weather exposure
- Poor construction can lead to leaks
- Erosion over time can cause damage
PART 03
Flashing
Flashing is the metal strip that creates a waterproof seal between the chimney and the roof.
- Leaks can develop if flashing is improperly installed
- Corrosion can occur over time
- Flashing can detach due to roof movement or weather
PART 04
Brick and mortar
These are the bricks and mortar that make up the visible exterior of the chimney structure.
- Bricks can crack or chip from weather
- Mortar joints can erode over time
- Water damage can weaken the structure
PART 05
Flue liner
A flue liner protects the chimney walls and improves safety by directing smoke and gases out of the chimney.
- Cracks can develop in clay liners
- Corrosion can affect metal liners
- Improper installation can lead to inefficiency
PART 06
Smoke chamber
This is the area above the firebox where smoke gathers before entering the flue.
- Creosote buildup can occur
- Poor design can reduce draft efficiency
- Cracks may develop over time
PART 07
Damper
A damper is a movable plate that controls airflow in the chimney, helping to prevent heat loss when not in use.
- Rust can cause it to stick
- Improper sealing can lead to drafts
- It can become misaligned and not close properly
PART 08
Firebox
The firebox is the part of the chimney where the fire actually burns, constructed to withstand high heat.
- Bricks can crack due to high heat
- Mortar can erode, leading to gaps
- Damage can occur from neglect or misuse
01 · Chimney cap
A chimney cap is a protective covering at the top of the chimney that prevents debris, rain, and animals from entering the chimney.
- Cap can become loose or damaged from weather
- Debris can build up around the cap
- Rust can form, leading to deterioration
02 · Crown
The chimney crown is a slab, usually made of cement, that covers the top of the chimney to protect it from the elements.
- Cracking due to weather exposure
- Poor construction can lead to leaks
- Erosion over time can cause damage
03 · Flashing
Flashing is the metal strip that creates a waterproof seal between the chimney and the roof.
- Leaks can develop if flashing is improperly installed
- Corrosion can occur over time
- Flashing can detach due to roof movement or weather
04 · Brick and mortar
These are the bricks and mortar that make up the visible exterior of the chimney structure.
- Bricks can crack or chip from weather
- Mortar joints can erode over time
- Water damage can weaken the structure
05 · Flue liner
A flue liner protects the chimney walls and improves safety by directing smoke and gases out of the chimney.
- Cracks can develop in clay liners
- Corrosion can affect metal liners
- Improper installation can lead to inefficiency
06 · Smoke chamber
This is the area above the firebox where smoke gathers before entering the flue.
- Creosote buildup can occur
- Poor design can reduce draft efficiency
- Cracks may develop over time
07 · Damper
A damper is a movable plate that controls airflow in the chimney, helping to prevent heat loss when not in use.
- Rust can cause it to stick
- Improper sealing can lead to drafts
- It can become misaligned and not close properly
08 · Firebox
The firebox is the part of the chimney where the fire actually burns, constructed to withstand high heat.
- Bricks can crack due to high heat
- Mortar can erode, leading to gaps
- Damage can occur from neglect or misuse