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 your chimney and serves to keep debris, rain, and animals out.
- Rust or damage from weather can lead to it not functioning properly.
- Missing cap can allow water and animals into the chimney.
- Improperly sized caps can cause draft issues.
PART 02
Crown
The chimney crown is a slab of concrete that covers the top opening of the chimney.
- Cracking can occur due to weather changes and lead to water leaks.
- Erosion from elements can compromise its effectiveness.
- Poor construction can lead to premature deterioration.
PART 03
Flashing
Flashing is the material that seals the space between the chimney and the roof to prevent leaks.
- Improper installation can lead to water leaks.
- Corrosion over time may weaken the seal.
- Shifting of the roof or chimney can cause gaps.
PART 04
Brick and mortar
This is the brickwork that forms the chimney structure.
- Mortar joints can crack and crumble over time.
- Bricks can become loose or displaced.
- Water penetration can lead to spalling or flaking.
PART 05
Flue liner
The flue liner is a material inside the chimney that protects the walls from heat and corrosion.
- Cracks in the liner can lead to heat transfer and potential chimney fires.
- Improper installation may reduce efficiency.
- Corrosion can occur over time, requiring replacement.
PART 06
Smoke chamber
This is the area above the fireplace that directs smoke into the flue.
- Uneven surfaces can cause poor smoke draw.
- Cracks can lead to smoke leaks.
- Buildup of soot and creosote can obstruct the pathway.
PART 07
Damper
The damper is a device that can seal the chimney flue when the fireplace is not in use.
- Warping or rust can prevent proper sealing.
- Debris can block its movement.
- A damaged seal can allow drafts or heat loss.
PART 08
Firebox
The firebox is the area where the fire actually burns in a fireplace.
- Cracks in the brickwork can occur from high heat exposure.
- Mortar erosion can lead to structural issues.
- Buildup of soot can reduce efficiency.
01 · Chimney cap
A chimney cap sits on top of your chimney and serves to keep debris, rain, and animals out.
- Rust or damage from weather can lead to it not functioning properly.
- Missing cap can allow water and animals into the chimney.
- Improperly sized caps can cause draft issues.
02 · Crown
The chimney crown is a slab of concrete that covers the top opening of the chimney.
- Cracking can occur due to weather changes and lead to water leaks.
- Erosion from elements can compromise its effectiveness.
- Poor construction can lead to premature deterioration.
03 · Flashing
Flashing is the material that seals the space between the chimney and the roof to prevent leaks.
- Improper installation can lead to water leaks.
- Corrosion over time may weaken the seal.
- Shifting of the roof or chimney can cause gaps.
04 · Brick and mortar
This is the brickwork that forms the chimney structure.
- Mortar joints can crack and crumble over time.
- Bricks can become loose or displaced.
- Water penetration can lead to spalling or flaking.
05 · Flue liner
The flue liner is a material inside the chimney that protects the walls from heat and corrosion.
- Cracks in the liner can lead to heat transfer and potential chimney fires.
- Improper installation may reduce efficiency.
- Corrosion can occur over time, requiring replacement.
06 · Smoke chamber
This is the area above the fireplace that directs smoke into the flue.
- Uneven surfaces can cause poor smoke draw.
- Cracks can lead to smoke leaks.
- Buildup of soot and creosote can obstruct the pathway.
07 · Damper
The damper is a device that can seal the chimney flue when the fireplace is not in use.
- Warping or rust can prevent proper sealing.
- Debris can block its movement.
- A damaged seal can allow drafts or heat loss.
08 · Firebox
The firebox is the area where the fire actually burns in a fireplace.
- Cracks in the brickwork can occur from high heat exposure.
- Mortar erosion can lead to structural issues.
- Buildup of soot can reduce efficiency.