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A homeowner’s chimney glossary
The vocabulary behind a contractor’s recommendation, with a practical next question for each term.
Cap
A cover at a chimney termination. Ask which flue or termination a proposed replacement serves.
See it in contextCrown
The masonry chimney’s top covering around the flue opening; different from a removable cap.
See it in contextFlashing
The weather-management connection where a chimney meets the roof. Clarify responsibility when roofing and chimney contractors share a job.
See it in contextFlue
The passage that carries exhaust. One chimney structure may contain more than one flue.
See it in contextLiner
The material or system lining the flue. A proposal should identify the product and its suitability for the connected appliance.
See it in contextFirebox
The chamber where the fire burns. A clean-looking firebox does not establish the condition of the concealed flue.
See it in contextDamper
A device that controls or closes a passage in a fireplace system. Follow the specific appliance instructions for operation.
See it in contextCreosote
Combustion deposits associated with wood burning. Ask a professional to document the location and recommend a suitable cleaning approach.
See it in contextRepointing
Work on masonry mortar joints. The estimate should define the area, preparation and proposed mortar.
See it in contextInspection limitation
An area or condition the inspector could not evaluate within the agreed scope. Keep limitations visible when comparing recommendations.
See it in contextChange order
A written change to agreed work, price or timing. Establish how it will be approved before work starts.
See it in contextClearance
The required separation between specified system components and surrounding materials. Requirements depend on the system and applicable instructions.
See it in context