Chimney anatomy
Every part of a chimney, what it does and what goes wrong with it.
PART 01
Chimney cap
A chimney cap sits on top of the chimney and keeps out rain, debris, and animals.
- Can become damaged or dislodged by strong winds.
- May rust or corrode over time.
- Could become blocked by debris, affecting airflow.
PART 02
Crown
The crown is a concrete or stone cover that seals the top of the chimney to prevent water entry.
- Cracks can form due to weathering, leading to water leaks.
- Can deteriorate over time, causing further structural issues.
- Improper construction can lead to ineffective water shedding.
PART 03
Flashing
Flashing is a metal barrier that seals the joint between the chimney and roof to prevent water penetration.
- May become loose or detached due to age or weather.
- Corrosion can lead to leaks.
- Improper installation can cause gaps.
PART 04
Brick and mortar
Brick and mortar make up the structure of the chimney, providing stability and insulation.
- Weather can cause bricks to crack and mortar to crumble.
- Moisture can lead to spalling or flaking of bricks.
- Settling may cause structural issues.
PART 05
Flue liner
A flue liner is a protective layer inside the chimney that helps contain the combustion products and protects the masonry.
- Cracks or gaps can develop, allowing heat to escape.
- Build-up of creosote can increase fire risk.
- Deterioration over time can reduce efficiency.
PART 06
Smoke chamber
The smoke chamber funnels smoke from the firebox into the flue, aiding in proper draft.
- Poor construction can lead to draft problems.
- Creosote accumulation can occur, increasing fire risks.
- Cracks can cause smoke leakage into the home.
PART 07
Damper
A damper is a movable plate that regulates air flow and keeps debris out of the chimney when not in use.
- Rust or damage can prevent proper sealing.
- Can become stuck either open or closed.
- Improper functioning can lead to heat loss.
PART 08
Firebox
The firebox is where the fire actually burns, constructed to contain the heat safely.
- Cracked bricks or mortar can lead to heat leaks.
- Improper construction can pose safety hazards.
- Build-up of soot or residue can reduce efficiency.
01 · Chimney cap
A chimney cap sits on top of the chimney and keeps out rain, debris, and animals.
- Can become damaged or dislodged by strong winds.
- May rust or corrode over time.
- Could become blocked by debris, affecting airflow.
02 · Crown
The crown is a concrete or stone cover that seals the top of the chimney to prevent water entry.
- Cracks can form due to weathering, leading to water leaks.
- Can deteriorate over time, causing further structural issues.
- Improper construction can lead to ineffective water shedding.
03 · Flashing
Flashing is a metal barrier that seals the joint between the chimney and roof to prevent water penetration.
- May become loose or detached due to age or weather.
- Corrosion can lead to leaks.
- Improper installation can cause gaps.
04 · Brick and mortar
Brick and mortar make up the structure of the chimney, providing stability and insulation.
- Weather can cause bricks to crack and mortar to crumble.
- Moisture can lead to spalling or flaking of bricks.
- Settling may cause structural issues.
05 · Flue liner
A flue liner is a protective layer inside the chimney that helps contain the combustion products and protects the masonry.
- Cracks or gaps can develop, allowing heat to escape.
- Build-up of creosote can increase fire risk.
- Deterioration over time can reduce efficiency.
06 · Smoke chamber
The smoke chamber funnels smoke from the firebox into the flue, aiding in proper draft.
- Poor construction can lead to draft problems.
- Creosote accumulation can occur, increasing fire risks.
- Cracks can cause smoke leakage into the home.
07 · Damper
A damper is a movable plate that regulates air flow and keeps debris out of the chimney when not in use.
- Rust or damage can prevent proper sealing.
- Can become stuck either open or closed.
- Improper functioning can lead to heat loss.
08 · Firebox
The firebox is where the fire actually burns, constructed to contain the heat safely.
- Cracked bricks or mortar can lead to heat leaks.
- Improper construction can pose safety hazards.
- Build-up of soot or residue can reduce efficiency.