Chimney anatomy
Every part of a chimney, what it does and what goes wrong with it.
PART 01
Chimney cap
The chimney cap sits at the top of the chimney and helps prevent rain, debris, and animals from entering.
- Cap can rust or corrode over time.
- Wildlife can damage or remove the cap.
- Weather can cause the cap to loosen or detach.
PART 02
Crown
The crown is a concrete or masonry cover that seals the top of the chimney, preventing water damage.
- Cracks can develop from freeze-thaw cycles.
- Improper construction can lead to water pooling.
- Wear and tear can occur over time, leading to deterioration.
PART 03
Flashing
Flashing is a metal barrier where the chimney meets the roof, preventing water from seeping in.
- Flashing can become loose or corroded.
- Water leaks can occur if flashing is improperly installed.
- Weather exposure can cause flashing to warp or crack.
PART 04
Brick and mortar
These are the structural components of the chimney, providing support and insulation for the flue.
- Mortar joints can degrade from moisture and weather.
- Bricks can crack or spall over time.
- Structural issues can arise if left unrepaired.
PART 05
Flue liner
The flue liner channels smoke and gases out of the house, protecting the chimney walls from heat and corrosion.
- Liner can crack or become damaged.
- Creosote buildup can occur inside the liner.
- Improper installation can lead to inefficiencies.
PART 06
Smoke chamber
The smoke chamber funnels smoke from the firebox into the flue, helping it rise efficiently.
- Improper shaping can cause poor draft.
- Cracks can develop, leading to inefficiencies.
- Smoke staining can occur over time.
PART 07
Damper
Located just above the firebox, the damper controls airflow into the chimney, sealing off the fireplace when not in use.
- Damper can become rusted or stuck.
- Improper sealing can lead to drafts.
- Misalignment can prevent it from opening or closing properly.
PART 08
Firebox
The firebox is the area where the fire actually burns, designed to contain the fire safely.
- Bricks can crack due to intense heat.
- Mortar can deteriorate over time.
- Improper cleaning can lead to soot buildup.
01 · Chimney cap
The chimney cap sits at the top of the chimney and helps prevent rain, debris, and animals from entering.
- Cap can rust or corrode over time.
- Wildlife can damage or remove the cap.
- Weather can cause the cap to loosen or detach.
02 · Crown
The crown is a concrete or masonry cover that seals the top of the chimney, preventing water damage.
- Cracks can develop from freeze-thaw cycles.
- Improper construction can lead to water pooling.
- Wear and tear can occur over time, leading to deterioration.
03 · Flashing
Flashing is a metal barrier where the chimney meets the roof, preventing water from seeping in.
- Flashing can become loose or corroded.
- Water leaks can occur if flashing is improperly installed.
- Weather exposure can cause flashing to warp or crack.
04 · Brick and mortar
These are the structural components of the chimney, providing support and insulation for the flue.
- Mortar joints can degrade from moisture and weather.
- Bricks can crack or spall over time.
- Structural issues can arise if left unrepaired.
05 · Flue liner
The flue liner channels smoke and gases out of the house, protecting the chimney walls from heat and corrosion.
- Liner can crack or become damaged.
- Creosote buildup can occur inside the liner.
- Improper installation can lead to inefficiencies.
06 · Smoke chamber
The smoke chamber funnels smoke from the firebox into the flue, helping it rise efficiently.
- Improper shaping can cause poor draft.
- Cracks can develop, leading to inefficiencies.
- Smoke staining can occur over time.
07 · Damper
Located just above the firebox, the damper controls airflow into the chimney, sealing off the fireplace when not in use.
- Damper can become rusted or stuck.
- Improper sealing can lead to drafts.
- Misalignment can prevent it from opening or closing properly.
08 · Firebox
The firebox is the area where the fire actually burns, designed to contain the fire safely.
- Bricks can crack due to intense heat.
- Mortar can deteriorate over time.
- Improper cleaning can lead to soot buildup.