Chimney anatomy

01 · Chimney cap

The chimney cap sits at the top of the chimney and protects the flue from rain, debris, and animals.

• Cap can become damaged or dislodged
• Rust can develop over time
• Animals can damage or remove the cap

02 · Crown

The chimney crown is a slab of concrete that sits on top of the chimney to protect it from water infiltration.

• Cracks due to weather exposure
• Water pooling and leaking
• Deterioration over time

03 · Flashing

Flashing is a metal barrier that seals the space between the chimney and the roof, preventing water leaks.

• Leaks around the flashing
• Corroded or missing sections
• Improper installation

04 · Brick and mortar

Masonry includes the bricks and mortar that construct the chimney, providing structure and protection.

• Cracked or missing bricks
• Mortar joints deteriorating
• Water damage and freeze-thaw cycles

05 · Flue liner

The flue liner is a conduit inside the chimney that safely carries smoke and combustion gases out of the home.

• Cracks or damage to the liner
• Blockages from creosote buildup
• Incorrectly sized liners

06 · Smoke chamber

The smoke chamber funnels smoke from the firebox into the flue, promoting efficient smoke evacuation.

• Creosote buildup
• Cracks or gaps in the chamber
• Inefficient smoke flow

07 · Damper

The damper controls airflow in the chimney, helping to retain heat when the fireplace is not in use.

• Rust or corrosion
• Difficulty in opening or closing
• Air leaks when closed

08 · Firebox

The firebox is the area where the fire burns, typically made of fireproof materials.

• Cracked firebrick
• Mortar deterioration
• Excessive smoke back into the room